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Clinical and radiographic changes following transcrestal sinus augmentation: A scoping review of the last 25 years. 经蝶窦隆鼻术后的临床和影像学变化:对过去 25 年研究的综述。
Pub Date : 2024-09-30 DOI: 10.1111/cid.13389
Ann M Decker, Sandra Stuhr, Tiziano Testori, Hom-Lay Wang

Introduction: Maxillary sinus floor elevation is a surgical procedure intended to increase the volume of the bone vertically to accommodate dental implant placement. This intervention is frequently required for implant installation in the posterior maxilla, where the bone may be insufficient for securing implants of necessary length and stability. Sinus floor elevation can be completed either through a direct approach with a "window" through the lateral wall of the alveolar ridge or an indirect "transcrestal/transalveolar" sinus floor elevation (TSFE), which accesses the sinus floor through the crest of the edentulous ridge. Our study aims to provide a comprehensive scoping review of research conducted over the past 25 years on TSFE, specifically.

Methods: A literature search aimed at identifying pertinent literature for the purpose of this PRISMA-ScR-compliant scoping review was conducted. Only randomized controlled trials, non-randomized controlled trials, prospective cohort studies, and case series that met the eligibility criteria were selected. Relevant data from these studies were extracted. Primary outcome measures included radiographic bone levels and implant failure >5 years. Secondary outcome measures included implant stability at time of placement and complications. Interventions reported in the selected studies were grouped based on treatment modality, which were then compared with the control therapy (traditional osteotome technique) after a minimum of 12 months healing period.

Results: Our search yielded 633 records, and after deduplication, 574 of these were screened. Application of the eligibility criteria led to the inclusion of 37 articles in the final selection. Case selection for included studies enrolling subjects: Four different transcrestal sinus elevation treatment modalities were identified: (a) osteotome, (b) piezoelectric surgery, (c) osseodensification, and (d) hydraulic techniques. Due to the heterogeneity of the studies, no superior approach for TSFE could be identified. Overall, all techniques demonstrated high implant survival rates.

Conclusion: Comprehensive understanding of the patient's medical history, available armamentarium, and post-operative complications/management strategies are all essential to the completion of a successful TSFE approach for implant placement in the posterior maxilla, regardless of the treatment modality used.

简介上颌窦底抬高术是一种外科手术,旨在垂直增加骨量,以适应牙科植入物的植入。在上颌后部安装种植体时经常需要进行这种干预,因为那里的骨量可能不足以确保种植体达到必要的长度和稳定性。上颌窦底抬高术可以通过在牙槽嵴侧壁开 "窗 "的直接方法完成,也可以通过通过无牙槽嵴嵴进入上颌窦底的间接 "跨嵴/跨牙槽 "上颌窦底抬高术(TSFE)完成。我们的研究旨在全面回顾过去 25 年来对 TSFE 的研究:方法:我们进行了一次文献检索,目的是为此次符合 PRISMA-ScR 标准的范围综述确定相关文献。只选择了符合资格标准的随机对照试验、非随机对照试验、前瞻性队列研究和病例系列研究。从这些研究中提取了相关数据。主要结果指标包括放射学骨水平和种植体失败 >5 年。次要结果指标包括植入时的种植体稳定性和并发症。所选研究中报告的干预措施根据治疗方式进行分组,然后与至少 12 个月愈合期后的对照疗法(传统截骨技术)进行比较:结果:我们的搜索共获得 633 条记录,经过重复筛选后,其中 574 条记录入选。根据资格标准,最终筛选出 37 篇文章。纳入研究对象的病例选择:确定了四种不同的经骨窦提升治疗方法:(a) 截骨器、(b) 压电手术、(c) 骨增生和 (d) 液压技术。由于研究的异质性,无法确定 TSFE 的优越方法。总的来说,所有技术都显示出较高的种植体存活率:结论:无论采用哪种治疗方式,全面了解患者的病史、可用设备和术后并发症/管理策略对于成功完成上颌后部种植体植入的 TSFE 方法都至关重要。
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引用次数: 0
The impact of collagen membrane fixation protocols on volume stability in horizontal ridge augmentation in the aesthetic area: A retrospective study. 胶原蛋白膜固定方案对美容区水平隆脊手术体积稳定性的影响:回顾性研究。
Pub Date : 2024-09-30 DOI: 10.1111/cid.13393
Shuo Zhang, Yanying Wang, Qingfu Wang, Jinmeng Li, Feifan Wang, Zhaoyang Li, Jianlin Cui, Jian Zhang

Objectives: This study aimed to evaluate the impact of different collagen membran fixation protocols on the volume stability in horizontal ridge augmentation in the aesthetic area.

Methods: A total of 48 patients with 65 augmented sites were included in this study. Implants were placed in the aesthetic region, and simultaneous guided bone regeneration (GBR) surgery was performed for horizontal ridge augmentation. Participants were divided into four groups, each comprising 12 patients, based on different absorbable collagen membrane fixation protocols. Group 1: without fixation; Group 2: fixation with absorbable sutures; Group 3: fixation with titanium pins; Group 4: fixation with titanium pins and absorbable sutures. Cone beam computed tomography (CBCT) was performed immediately after surgery and at 6 months post-surgery, respectively. The horizontal thickness of the augmented region was analyzed for volume stability at the implant shoulder (H0) and 1-5 mm apical to the implant shoulder (H1-H5). Changes in labial thickness during bone healing were calculated as absolute values (mm) and relative values (%).

Results: After 6 months of bone healing, horizontal thickness was significantly reduced at all levels (H0-H5) in all groups compared to immediate post-surgery results (p < 0.05). At H1-H5, horizontal bone loss in group 1 was significantly higher than in the other three groups (p < 0.05). Group 4 exhibited significantly less horizontal bone loss compared to group 2 at H0-H2 (p < 0.05) and group 4 compared to group 3 at H0-H1 (p < 0.05). No significant difference in horizontal bone loss between groups 2 and 3 was detected at H0-H5 (p > 0.05).

Conclusion: Guided bone regeneration in the aesthetic area with additional membrane fixation demonstrated superior volume stability of the augmented region compared to cases without fixation. There was no significant difference in bone volume stability between membrane fixation with titanium pins and fixation with absorbable sutures. However, the combined use of pins and absorbable sutures yielded superior volume stability.

研究目的本研究旨在评估不同的胶原蛋白膜固定方案对美容区水平脊隆起的体积稳定性的影响:本研究共纳入了 48 名患者,65 个隆起部位。方法:本研究共纳入 48 名患者,65 个隆起部位,在美学区域植入种植体,同时进行引导骨再生(GBR)手术,以隆起水平脊。根据不同的可吸收胶原膜固定方案,参与者被分为四组,每组 12 人。第一组:无固定;第二组:用可吸收缝线固定;第三组:用钛针固定;第四组:用钛针和可吸收缝线固定。分别在术后立即和术后 6 个月时进行锥形束计算机断层扫描(CBCT)。对增量区域的水平厚度进行了分析,以确定种植体肩部(H0)和种植体肩部顶端 1-5 毫米处(H1-H5)的体积稳定性。计算骨愈合过程中唇厚度的绝对值(毫米)和相对值(%):结果:骨愈合 6 个月后,与术后即刻的结果相比,所有组别(H0-H5)的水平厚度都明显减少(P 0.05):结论:与未进行固定的病例相比,在美学区域进行引导性骨再生并进行额外的膜固定显示出增量区域的骨量稳定性更佳。使用钛钉进行膜固定与使用可吸收缝线进行固定在骨量稳定性方面没有明显差异。不过,联合使用钛钉和可吸收缝线可获得更好的骨量稳定性。
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引用次数: 0
Does alveolar ridge preservation reduce the need for sinus floor elevation: A comparative study to spontaneous healing. 牙槽嵴保留是否减少了窦底抬高的需要:与自发愈合的比较研究。
Pub Date : 2024-09-26 DOI: 10.1111/cid.13391
Elias Jean-Jacques Khoury, Keyvan Sagheb, Bilal Al-Nawas, Jochem König, Eik Schiegnitz

Introduction: In cases of atrophy in the maxillary posterior region, characterized by reduced vertical bone volume, implant placement becomes challenging. Augmentation procedures like sinus lifts are often needed to address insufficient bone volume. This study aims to explore if alveolar ridge preservation, using a bovine bone substitute and a porcine collagen membrane, significantly decreases the need for sinus lifts compared to natural wound healing after tooth extraction.

Materials and methods: In this comparative clinical study, 40 patients requiring a total of 53 extractions were assigned to one of the following groups: a test group with bovine bone substitute material (Straumann® XenoFlex) and a porcine collagen membrane (Jason® membrane), or a control group with spontaneous socket healing. After 6 months, digital volume tomography was performed for implant planning.

Results: For seven patients from the control group (n = 22 extracted sites) sinus lift augmentations were performed while only four sinus lift procedures were performed in the test group (n = 31 extracted sites), indicating a higher need for sinus augmentation procedures in the control group, however not statistically different on a p value of 0.05 (p = 0.168). In the control group, the mean value of the radiographically measured bone height (mesial and distal) was 11.13 ± 2.12 mm preoperatively before tooth extraction, while it was 11.3 ± 2.17 mm postoperatively after implant placement. In contrast, the mean value in the test group was 11.78 ± 3.09 mm preoperatively and 11.92 ± 2.79 mm postoperatively. Statistical analysis revealed no significant difference between the two groups (odds ratio 0.32; 95% CI: 0.08, 1.26; p = 0.951). The implant survival rate in the control group was 100%, compared to 96.77% in the test group.

Conclusion: Within the limits of this study, the use of bovine bone substitute and a porcine resorbable membrane after tooth extraction in the posterior maxilla seems to reduce the need for sinus augmentation in comparison to spontaneous healing although the difference was not statistically significant. Additionally, the Alveolar Ridge Preservation in the test group made external sinus floor elevation unnecessary compared to the control group. The change in radiographically measured bone height pre- and postoperatively showed no significant difference between the two groups.

前言上颌后牙区萎缩的特点是垂直骨量减少,因此植入种植体变得非常困难。为了解决骨量不足的问题,通常需要进行上颌窦提升等增量手术。本研究旨在探讨与拔牙后伤口自然愈合相比,使用牛骨替代物和猪胶原膜进行牙槽嵴保存是否能显著减少上颌窦提升术的需求:在这项比较临床研究中,40 名总共需要拔牙 53 次的患者被分配到以下两组中的一组:使用牛骨替代材料(Straumann® XenoFlex)和猪胶原蛋白膜(Jason® 膜)的试验组,或自发窝愈合的对照组。6 个月后,进行数字容积断层扫描,以制定种植计划:结果:对照组(n = 22 个拔牙部位)有 7 名患者进行了上颌窦提升增量手术,而试验组(n = 31 个拔牙部位)只有 4 名患者进行了上颌窦提升增量手术,这表明对照组患者对上颌窦增量手术的需求更高,但在统计学上没有差异,P 值为 0.05(P = 0.168)。在对照组中,拔牙前术前影像学测量的骨高度(中轴和远轴)平均值为 11.13 ± 2.12 毫米,而植入种植体后的术后骨高度平均值为 11.3 ± 2.17 毫米。而试验组的术前平均值为 11.78 ± 3.09 毫米,术后为 11.92 ± 2.79 毫米。统计分析显示,两组之间无明显差异(几率比 0.32;95% CI:0.08,1.26;P = 0.951)。对照组的种植体存活率为 100%,而试验组为 96.77%:在本研究的范围内,与自发愈合相比,在上颌后牙拔除后使用牛骨替代物和猪可吸收膜似乎可以减少对上颌窦增量的需求,尽管差异在统计学上并不显著。此外,与对照组相比,试验组的牙槽嵴保留使外部窦底抬高变得不必要。两组患者术前和术后放射线测量的骨高度变化无明显差异。
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引用次数: 0
Trans-crestal dental implants in the rehabilitation of a severely atrophic maxilla: A retrospective case series. 在严重萎缩的上颌骨修复中使用经冠种植体:回顾性病例系列。
Pub Date : 2024-09-24 DOI: 10.1111/cid.13388
Enrico Luigi Agliardi, Davide Romeo, Stefano Panigatti, Bianca D'Orto, Jacopo Agliardi, Enrico Gherlone, Massimo Del Fabbro

Purpose: To evaluate the mid-term clinical and radiographic results of immediate fixed full-arch prosthesis supported by two anterior axial and two posterior trans-crestally placed tilted implants in patients with severely atrophic posterior maxilla.

Materials and methods: Patients with posterior maxillary ridge less than 4 mm high and 3 mm wide were rehabilitated with an immediate fixed provisional prosthesis supported by two anterior axially placed and two trans-crestal posterior tilted implants within 3 h after implant surgery. The final prosthesis, consisting of a CAD-CAM titanium framework and composite teeth was delivered 6 months later. Patients were scheduled for follow-up visits every 6 months to assess clinical and radiological parameters. Patients' satisfaction was assessed by a questionnaire up to 5 years.

Results: From April 2008 to May 2017, 56 implants (28 axial and 28 tilted) were inserted in 14 subjects (eight female and six male). The average bone loss for the anterior axial implants was 0.99 ± 0.19 mm at 1 year (n = 28 implants), 1.37 ± 0.31 mm at 5 years (n = 28), and 2.05 ± 0.32 mm at 10 years (n = 14). Only for three implants in two subjects the marginal bone loss was higher than 2 mm after 60 months. No implant was lost, and no prosthetic failure occurred after a mean follow-up of 125 months (range 79-186 months), leading to 100% implant and prosthesis survival rates. The upper 95% confidence limit of the failure rate was 23% and 6% at patient and implant level, respectively. High level of satisfaction was reported at 5-year follow-up.

Conclusion: Wider sample sizes will be required to determine whether the presented technique is a reliable treatment option for the immediate rehabilitation of the atrophic maxilla.

目的:评估上颌后部严重萎缩患者在两个前部轴向和两个后部跨嵴倾斜种植体支持下的即刻固定全牙弓修复体的中期临床和影像学效果:上颌骨后嵴高不足 4 毫米、宽不足 3 毫米的患者在种植手术后 3 小时内接受了由两颗前部轴向放置的种植体和两颗后部跨嵴倾斜的种植体支撑的即刻固定临时假体修复。6 个月后,由 CAD-CAM 钛框架和复合牙组成的最终修复体交付使用。患者每 6 个月接受一次随访,以评估临床和放射学参数。患者的满意度则通过问卷调查进行评估,评估期长达 5 年:从 2008 年 4 月到 2017 年 5 月,共为 14 名受试者(8 名女性和 6 名男性)植入了 56 个种植体(28 个轴向种植体和 28 个倾斜种植体)。前轴种植体的平均骨质流失量为:1 年 0.99 ± 0.19 毫米(28 个),5 年 1.37 ± 0.31 毫米(28 个),10 年 2.05 ± 0.32 毫米(14 个)。只有两个受试者的三个种植体在 60 个月后的边缘骨损失超过了 2 毫米。在平均 125 个月(79-186 个月)的随访中,没有种植体脱落,也没有修复体失败,种植体和修复体的存活率均为 100%。患者和种植体的失败率 95% 置信上限分别为 23% 和 6%。5年随访的满意度很高:要确定所介绍的技术是否是一种可靠的上颌骨萎缩即刻康复治疗方案,还需要更广泛的样本量。
{"title":"Trans-crestal dental implants in the rehabilitation of a severely atrophic maxilla: A retrospective case series.","authors":"Enrico Luigi Agliardi, Davide Romeo, Stefano Panigatti, Bianca D'Orto, Jacopo Agliardi, Enrico Gherlone, Massimo Del Fabbro","doi":"10.1111/cid.13388","DOIUrl":"https://doi.org/10.1111/cid.13388","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the mid-term clinical and radiographic results of immediate fixed full-arch prosthesis supported by two anterior axial and two posterior trans-crestally placed tilted implants in patients with severely atrophic posterior maxilla.</p><p><strong>Materials and methods: </strong>Patients with posterior maxillary ridge less than 4 mm high and 3 mm wide were rehabilitated with an immediate fixed provisional prosthesis supported by two anterior axially placed and two trans-crestal posterior tilted implants within 3 h after implant surgery. The final prosthesis, consisting of a CAD-CAM titanium framework and composite teeth was delivered 6 months later. Patients were scheduled for follow-up visits every 6 months to assess clinical and radiological parameters. Patients' satisfaction was assessed by a questionnaire up to 5 years.</p><p><strong>Results: </strong>From April 2008 to May 2017, 56 implants (28 axial and 28 tilted) were inserted in 14 subjects (eight female and six male). The average bone loss for the anterior axial implants was 0.99 ± 0.19 mm at 1 year (n = 28 implants), 1.37 ± 0.31 mm at 5 years (n = 28), and 2.05 ± 0.32 mm at 10 years (n = 14). Only for three implants in two subjects the marginal bone loss was higher than 2 mm after 60 months. No implant was lost, and no prosthetic failure occurred after a mean follow-up of 125 months (range 79-186 months), leading to 100% implant and prosthesis survival rates. The upper 95% confidence limit of the failure rate was 23% and 6% at patient and implant level, respectively. High level of satisfaction was reported at 5-year follow-up.</p><p><strong>Conclusion: </strong>Wider sample sizes will be required to determine whether the presented technique is a reliable treatment option for the immediate rehabilitation of the atrophic maxilla.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142309372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of autologous micrografts associated with xenogeneic anorganic bone in vertical bone augmentation procedures with Barbell Technique®. 使用 Barbell Technique® 垂直骨增量手术中的自体微移植与异种无机骨。
Pub Date : 2024-09-20 DOI: 10.1111/cid.13387
Luiz Antonio Mazzucchelli Cosmo, Reginaldo Machado Coutinho, Luís Guilherme Scavone de Macedo, Antonio Carlos Aloise, Sérgio Jorge Jayme, João Pedro Grandini Zeferino, Antonio Graziano, Elizabeth Ferreira Martinez, Peter Karyen Moy, André Antonio Pelegrine

Introduction: Bidirectional vertical ridge augmentation in the posterior maxilla is very challenging.

Purpose: To evaluate the regenerative potential of micrografts, derived from periosteum or bone tissue, added to an anorganic xenograft in vertical reconstruction of the posterior maxilla, by a prospective, controlled study.

Materials and methods: After clinical selection and the analysis of CBCT scans, 24 posterior maxillary sites, in 19 patients, were treated by using Barbell Technique®. Sites requiring both inlay and onlay reconstruction were enrolled in the study. In the Control Group (CG, n = 8), a xenograft was used in the inlay site and for the onlay site, a 1:1 mix of xenograft and an autograft was used. In Test Group 1 (TG1, n = 8), both inlay and onlay sites were grafted with the xenograft associated with the micrografts derived from periosteum. In Test Group 2 (TG2, n = 8), both inlay and onlay sites were grafted with the xenograft associated with the micrografts derived from bone. Six months after the procedures, CBCT scans were obtained, and bone biopsy samples were harvested during implant placement surgery. The bone specimens were analyzed histomorphometrically, by measuring the percentages of vital mineralized tissue (VMT), non vital mineralized tissue (NVMT) and non mineralized tissue (NMT). Immunohistochemically, the levels of VEGF were categorized by a score approach.

Results: Histomorphometric analysis revealed, for the inlay grafts, no significant difference among the groups for VMT, NVMT and NMT. However, for onlay grafts, CG achieved a higher amount of VMT in comparison with TG2, and the opposite occurred for NMT values. In this regard, no statistical difference was observed between CG and TG1. Concerning immunohistochemistry, the VEGF values for CG and TG1 were slightly higher than those obtained by TG2 for both inlay and onlay grafts, but without statistical significance. CBCT analysis showed a similar level of gain for all groups, for both inlay and onlay bone augmentation sites. Clinically, one implant (in CG) within a total of 50 implants installed, had early failure and was replaced after 3 months. All patients received implant supported prosthesis.

Conclusion: This study indicated that the clinical use of micrograft derived from periosteum may have some potential to increase bone formation in onlay reconstructions, unlike the micrograft derived from bone tissue.

简介目的:通过一项前瞻性对照研究,评估将骨膜或骨组织提取的微移植物添加到无机异种移植物中,用于上颌后牙垂直重建的再生潜力:经过临床选择和 CBCT 扫描分析后,采用 Barbell Technique® 对 19 名患者的 24 个上颌后牙部位进行了治疗。需要镶牙和嵌体重建的部位都被纳入了研究范围。对照组(CG,n = 8)在嵌体部位使用异种移植物,在镶嵌部位使用 1:1 的异种移植物和自体移植物混合体。在测试组 1(TG1,n = 8)中,嵌体和镶嵌部位都使用了与骨膜提取的微小移植物相关的异种移植物。在测试组 2(TG2,n = 8)中,内镶和外镶部位都移植了异种移植物和从骨中提取的微移植物。手术六个月后,进行 CBCT 扫描,并在植入手术中采集骨活检样本。通过测量重要矿化组织(VMT)、非重要矿化组织(NVMT)和非矿化组织(NMT)的百分比,对骨标本进行组织形态学分析。通过免疫组织化学方法,采用评分法对血管内皮生长因子的水平进行分类:组织形态学分析表明,镶嵌移植物组的 VMT、NVMT 和 NMT 无明显差异。然而,就镶嵌移植物而言,CG 的 VMT 值高于 TG2,而 NMT 值则与之相反。在这方面,CG 和 TG1 之间没有统计学差异。在免疫组化方面,CG 和 TG1 的血管内皮生长因子(VEGF)值略高于 TG2 的内镶和外镶移植物,但无统计学意义。CBCT 分析表明,所有组的骨增量水平相似,无论是内植骨还是外植骨。临床上,在总共安装的 50 个种植体中,有一个种植体(CG)出现早期失败,3 个月后被更换。所有患者均接受了种植体支持修复:这项研究表明,与从骨组织中提取的微量移植材料不同,从骨膜中提取的微量移植材料在临床应用中可能会增加嵌体重建中的骨形成。
{"title":"Use of autologous micrografts associated with xenogeneic anorganic bone in vertical bone augmentation procedures with Barbell Technique®.","authors":"Luiz Antonio Mazzucchelli Cosmo, Reginaldo Machado Coutinho, Luís Guilherme Scavone de Macedo, Antonio Carlos Aloise, Sérgio Jorge Jayme, João Pedro Grandini Zeferino, Antonio Graziano, Elizabeth Ferreira Martinez, Peter Karyen Moy, André Antonio Pelegrine","doi":"10.1111/cid.13387","DOIUrl":"https://doi.org/10.1111/cid.13387","url":null,"abstract":"<p><strong>Introduction: </strong>Bidirectional vertical ridge augmentation in the posterior maxilla is very challenging.</p><p><strong>Purpose: </strong>To evaluate the regenerative potential of micrografts, derived from periosteum or bone tissue, added to an anorganic xenograft in vertical reconstruction of the posterior maxilla, by a prospective, controlled study.</p><p><strong>Materials and methods: </strong>After clinical selection and the analysis of CBCT scans, 24 posterior maxillary sites, in 19 patients, were treated by using Barbell Technique®. Sites requiring both inlay and onlay reconstruction were enrolled in the study. In the Control Group (CG, n = 8), a xenograft was used in the inlay site and for the onlay site, a 1:1 mix of xenograft and an autograft was used. In Test Group 1 (TG1, n = 8), both inlay and onlay sites were grafted with the xenograft associated with the micrografts derived from periosteum. In Test Group 2 (TG2, n = 8), both inlay and onlay sites were grafted with the xenograft associated with the micrografts derived from bone. Six months after the procedures, CBCT scans were obtained, and bone biopsy samples were harvested during implant placement surgery. The bone specimens were analyzed histomorphometrically, by measuring the percentages of vital mineralized tissue (VMT), non vital mineralized tissue (NVMT) and non mineralized tissue (NMT). Immunohistochemically, the levels of VEGF were categorized by a score approach.</p><p><strong>Results: </strong>Histomorphometric analysis revealed, for the inlay grafts, no significant difference among the groups for VMT, NVMT and NMT. However, for onlay grafts, CG achieved a higher amount of VMT in comparison with TG2, and the opposite occurred for NMT values. In this regard, no statistical difference was observed between CG and TG1. Concerning immunohistochemistry, the VEGF values for CG and TG1 were slightly higher than those obtained by TG2 for both inlay and onlay grafts, but without statistical significance. CBCT analysis showed a similar level of gain for all groups, for both inlay and onlay bone augmentation sites. Clinically, one implant (in CG) within a total of 50 implants installed, had early failure and was replaced after 3 months. All patients received implant supported prosthesis.</p><p><strong>Conclusion: </strong>This study indicated that the clinical use of micrograft derived from periosteum may have some potential to increase bone formation in onlay reconstructions, unlike the micrograft derived from bone tissue.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142303458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of surface micro-roughness and adaptation of titanium and cobalt chrome implant abutment fabricated by selective laser melting and conventional techniques. 比较选择性激光熔化和传统技术制造的钛和钴铬种植基台的表面微观粗糙度和适应性。
Pub Date : 2024-09-20 DOI: 10.1111/cid.13390
Refal Albaijan, Fahim Vohra, Talal M Alnassar, Ali Robaian, Sarah M Alnafaiy, Mohammed S Murayshed, Abdullah H Alnasser, Abdullah Alshehri, Khalid Gufran

Purpose: The objective of this study was to assess the surface micro-roughness and abutment adaptation of selective laser melting (SLM) implant abutments in comparison to cast and machined implant abutments.

Methods: Forty abutment specimens were divided equally into four groups according to the fabrication technique as follows (n = 10), Machined Ti alloy abutments (Control), Cast CoCr abutments, SLM-CoCr abutments, and SLM-Ti alloy abutments. Forty internal connection implants (Ø 4.0 ×10 mm, Superline™, Dentium Co., Seoul, Korea) were mounted in clear acrylic resin. Fabricated abutments were assessed for surface micro-roughness using a 3D optical noncontact surface microscope. Vertical and horizontal adaptation of the abutment with implant interface was assessed by using Bruker micro-CT. Data was assessed using analysis of variance and Tukey post hoc comparison tests for all the variables except vertical misfit was assessed using Kruskal-Wallis test. Pearson correlation was used to assess dependence between independent variable (surface roughness) and dependent variables (Horizontal misfit and vertical misfit).

Results: SLM-Ti abutments showed significantly rougher surface (p < 0.05) among the study groups. While SLM-CoCr abutments were smoother than Cast abutments with mean Ra of 1.30 ± 0.11 and 1.58 ± 0.17 μm, respectively (p < 0.05). For abutment adaptation, SLM-Ti abutments showed the highest horizontal misfit among the groups (p < 0.05). While, SLM-CoCr abutments (29.24 ± 11.11 μm) showed comparable (p > 0.05) horizontal misfit results with Cast (26.08 ± 3.93 μm) and machined (26.45 ± 7.33 μm) abutments. Comparable (p > 0.05) vertical misfit values between Cast CoCr (487.01 ± 40.34 μm), SLM-CoCr (358.38 ± 114.93 μm) and SLM-Ti (299.85 ± 172.88 μm) abutments were observed. A positive correlation was found between the surface roughness of the mating surfaces and abutment adaptation.

Conclusion: SLM CoCr abutments exhibited low roughness and comparable abutment adaptation (vertically and horizontally) than cast (control) abutments. Therefore, SLM CoCr abutments should be clinically investigated as potential implant abutments for clinical use.

目的:本研究的目的是评估选择性激光熔融(SLM)种植基台与铸造和机加工种植基台相比的表面微观粗糙度和基台适应性:根据制作技术将 40 个基台标本平均分为以下四组(n = 10):机加工钛合金基台(对照组)、铸造 CoCr 基台、SLM-CoCr 基台和 SLM-Ti 合金基台。将 40 个内连接种植体(直径 4.0 ×10 mm,Superline™,Dentium Co.,韩国首尔)安装在透明的丙烯酸树脂中。使用三维光学非接触式表面显微镜对制作的基台进行表面微粗糙度评估。使用布鲁克显微 CT 评估基台与种植体界面的垂直和水平适应性。除了使用 Kruskal-Wallis 检验评估垂直错位外,所有变量的数据均使用方差分析和 Tukey 事后比较检验进行评估。自变量(表面粗糙度)与因变量(水平误差和垂直误差)之间的相关性采用皮尔逊相关法进行评估:结果:SLM-钛基台与铸造基台(26.08 ± 3.93 μm)和机加工基台(26.45 ± 7.33 μm)相比,表面粗糙度(p 0.05)明显更高。铸造铬钴基台(487.01 ± 40.34 μm)、SLM-铬钴基台(358.38 ± 114.93 μm)和 SLM-Ti 基台(299.85 ± 172.88 μm)之间的垂直错位值相当(p > 0.05)。配合面的表面粗糙度与基台适应性之间呈正相关:结论:与铸造(对照)基台相比,SLM CoCr 基台的粗糙度低,基台适应性(垂直和水平方向)相当。因此,应将 SLM CoCr 基台作为潜在的种植体基台进行临床研究。
{"title":"Comparison of surface micro-roughness and adaptation of titanium and cobalt chrome implant abutment fabricated by selective laser melting and conventional techniques.","authors":"Refal Albaijan, Fahim Vohra, Talal M Alnassar, Ali Robaian, Sarah M Alnafaiy, Mohammed S Murayshed, Abdullah H Alnasser, Abdullah Alshehri, Khalid Gufran","doi":"10.1111/cid.13390","DOIUrl":"https://doi.org/10.1111/cid.13390","url":null,"abstract":"<p><strong>Purpose: </strong>The objective of this study was to assess the surface micro-roughness and abutment adaptation of selective laser melting (SLM) implant abutments in comparison to cast and machined implant abutments.</p><p><strong>Methods: </strong>Forty abutment specimens were divided equally into four groups according to the fabrication technique as follows (n = 10), Machined Ti alloy abutments (Control), Cast CoCr abutments, SLM-CoCr abutments, and SLM-Ti alloy abutments. Forty internal connection implants (Ø 4.0 ×10 mm, Superline™, Dentium Co., Seoul, Korea) were mounted in clear acrylic resin. Fabricated abutments were assessed for surface micro-roughness using a 3D optical noncontact surface microscope. Vertical and horizontal adaptation of the abutment with implant interface was assessed by using Bruker micro-CT. Data was assessed using analysis of variance and Tukey post hoc comparison tests for all the variables except vertical misfit was assessed using Kruskal-Wallis test. Pearson correlation was used to assess dependence between independent variable (surface roughness) and dependent variables (Horizontal misfit and vertical misfit).</p><p><strong>Results: </strong>SLM-Ti abutments showed significantly rougher surface (p < 0.05) among the study groups. While SLM-CoCr abutments were smoother than Cast abutments with mean Ra of 1.30 ± 0.11 and 1.58 ± 0.17 μm, respectively (p < 0.05). For abutment adaptation, SLM-Ti abutments showed the highest horizontal misfit among the groups (p < 0.05). While, SLM-CoCr abutments (29.24 ± 11.11 μm) showed comparable (p > 0.05) horizontal misfit results with Cast (26.08 ± 3.93 μm) and machined (26.45 ± 7.33 μm) abutments. Comparable (p > 0.05) vertical misfit values between Cast CoCr (487.01 ± 40.34 μm), SLM-CoCr (358.38 ± 114.93 μm) and SLM-Ti (299.85 ± 172.88 μm) abutments were observed. A positive correlation was found between the surface roughness of the mating surfaces and abutment adaptation.</p><p><strong>Conclusion: </strong>SLM CoCr abutments exhibited low roughness and comparable abutment adaptation (vertically and horizontally) than cast (control) abutments. Therefore, SLM CoCr abutments should be clinically investigated as potential implant abutments for clinical use.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142303457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accuracy of robotic computer-assisted implant surgery for immediate implant placement: A retrospective case series study. 机器人计算机辅助种植手术对即刻种植体植入的准确性:回顾性病例系列研究。
Pub Date : 2024-09-20 DOI: 10.1111/cid.13383
Ping Li, Chunhui Zhao, Jiahao Chen, Shulan Xu, Shuo Yang, An Li

Objectives: This study investigated the accuracy of robotic computer-assisted implant surgery (r-CAIS) for immediate implant placement.

Methods: Twenty cases with 20 implant sites were selected based on predefined inclusion criteria. The preparation of the implant bed and implant placement followed the standardized dental implant robotic surgery protocol. Postoperative cone-beam computed tomography scans were conducted to assess possible discrepancies between actual and planned implant positions.

Results: The r-CAIS technology for immediate implant placement exhibited a mean global coronal deviation of 0.71 ± 0.27 mm (95% CI: 0.58-0.83 mm), a mean global apical deviation of 0.69 ± 0.26 mm (95% CI: 0.56-0.81 mm), and an angular deviation of 1.27 ± 0.47° (95% CI: 1.05-1.49°). A substantial number of deviations were observed buccally at both coronal (90%) and apical (95%) levels, with a consistent tendency for buccal deviation.

Conclusions: The r-CAIS technology proved a promising approach for immediate implantation in the anterior region, with satisfactory clinical outcomes. However, an optimized surgical protocol for r-CAIS technology is required for particular implant sites like extraction sockets or bone defects.

研究目的本研究探讨了机器人计算机辅助种植手术(r-CAIS)在即刻种植体植入方面的准确性:根据预先确定的纳入标准,选择了 20 个病例的 20 个种植部位。种植床的准备和种植体的植入均按照标准化的牙科种植机器人手术方案进行。术后进行锥形束计算机断层扫描,以评估实际种植体位置与计划种植体位置之间可能存在的差异:r-CAIS技术用于即刻种植体植入的平均冠状偏差为0.71±0.27毫米(95% CI:0.58-0.83毫米),平均根尖偏差为0.69±0.26毫米(95% CI:0.56-0.81毫米),角度偏差为1.27±0.47°(95% CI:1.05-1.49°)。在冠状水平(90%)和根尖水平(95%)均观察到大量颊侧偏差,颊侧偏差趋势一致:r-CAIS技术被证明是前牙区即刻种植的理想方法,临床效果令人满意。然而,对于拔牙窝或骨缺损等特殊种植部位,需要对 r-CAIS 技术的手术方案进行优化。
{"title":"Accuracy of robotic computer-assisted implant surgery for immediate implant placement: A retrospective case series study.","authors":"Ping Li, Chunhui Zhao, Jiahao Chen, Shulan Xu, Shuo Yang, An Li","doi":"10.1111/cid.13383","DOIUrl":"https://doi.org/10.1111/cid.13383","url":null,"abstract":"<p><strong>Objectives: </strong>This study investigated the accuracy of robotic computer-assisted implant surgery (r-CAIS) for immediate implant placement.</p><p><strong>Methods: </strong>Twenty cases with 20 implant sites were selected based on predefined inclusion criteria. The preparation of the implant bed and implant placement followed the standardized dental implant robotic surgery protocol. Postoperative cone-beam computed tomography scans were conducted to assess possible discrepancies between actual and planned implant positions.</p><p><strong>Results: </strong>The r-CAIS technology for immediate implant placement exhibited a mean global coronal deviation of 0.71 ± 0.27 mm (95% CI: 0.58-0.83 mm), a mean global apical deviation of 0.69 ± 0.26 mm (95% CI: 0.56-0.81 mm), and an angular deviation of 1.27 ± 0.47° (95% CI: 1.05-1.49°). A substantial number of deviations were observed buccally at both coronal (90%) and apical (95%) levels, with a consistent tendency for buccal deviation.</p><p><strong>Conclusions: </strong>The r-CAIS technology proved a promising approach for immediate implantation in the anterior region, with satisfactory clinical outcomes. However, an optimized surgical protocol for r-CAIS technology is required for particular implant sites like extraction sockets or bone defects.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142303456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Guided bone regeneration at dehiscence comparing synthetic bone substitute versus bovine bone mineral: A multicenter, noninferiority, randomized trial. 人工合成骨替代物与牛骨矿物质在开裂处引导骨再生的比较:多中心、非劣效随机试验。
Pub Date : 2024-09-03 DOI: 10.1111/cid.13386
Jae-Kook Cha, Ui-Won Jung, Eduardo Montero-Solis, Ignacio Sanz-Sánchez, Mariano Sanz-Alonso

Aim: To evaluate the efficacy of guided bone regeneration (GBR) for the treatment of peri-implant dehiscence defects using a synthetic bone substitute (SBS) or a deproteinized bovine bone mineral (DBBM) as a bone substitute.

Methods: Patients with expected dehiscence defects following implant placement were randomized to use either SBS or DBBM together with a bioabsorbable collagen membrane over dehiscenced implant surfaces aimed for GBR. The changes in the bone defect size were measured before the GBR procedure and 6 months after implant placement at the re-entry surgery. Secondary outcomes included peri-implant health outcomes, implant cumulative survival rates, bone level changes, and patient-reported outcomes (PROMs) at prosthesis delivery and 1-year follow-up.

Results: Of the 49 included patients, 24 were treated with SBS and 25 with DBBM. In the SBS group, the defect height (DH) at implant insertion was 5.1 ± 2.6 mm and was reduced at re-entry to 1.3 ± 2.0 mm (74.5%). In the DBBM group, the respective changes in DH were 4.1 ± 1.7 mm and 1.5 ± 1.9 mm (63.4%). These differences were not statistically significant (p = 0.216). The complete defect resolution rate was also comparable in both groups without statistical difference (62.5% of patients (15/24) vs. 44% of patients (11/25)). Overall, the marginal bone levels remained stable during the 1-year follow-up in both groups.

Conclusion: The SBS is noninferior to DBBM for simultaneous GBR to implant placement at implant sites with buccal dehiscences in terms of defect resolution and evaluated secondary outcomes (KCT0008393 - this clinical trial was not registered before participant recruitment and randomization).

目的:使用合成骨替代物(SBS)或脱蛋白牛骨矿物质(DBBM)作为骨替代物,评估引导骨再生(GBR)治疗种植体周围开裂缺损的疗效:方法:对植入种植体后出现预期开裂缺损的患者进行随机分组,在开裂的种植体表面使用SBS或DBBM以及生物可吸收胶原膜进行GBR治疗。在 GBR 术前和种植体植入 6 个月后的再入路手术中测量骨缺损大小的变化。次要结果包括种植体周围健康结果、种植体累积存活率、骨水平变化以及假体交付和一年随访时患者报告的结果(PROMs):在 49 名患者中,24 人接受了 SBS 治疗,25 人接受了 DBBM 治疗。在 SBS 组中,植入假体时的缺损高度(DH)为 5.1 ± 2.6 毫米,再次植入时降至 1.3 ± 2.0 毫米(74.5%)。DBBM 组的 DH 变化分别为 4.1 ± 1.7 毫米和 1.5 ± 1.9 毫米(63.4%)。这些差异没有统计学意义(P = 0.216)。两组患者的完全缺损修复率也相当,无统计学差异(62.5% 的患者(15/24)对 44% 的患者(11/25))。总体而言,两组患者的边缘骨水平在1年的随访期间均保持稳定:结论:在有颊部开裂的种植部位同时进行 GBR 和种植体植入时,SBS 在缺陷解决和次要结果评估方面均不优于 DBBM(KCT0008393 - 该临床试验在参与者招募和随机化之前未注册)。
{"title":"Guided bone regeneration at dehiscence comparing synthetic bone substitute versus bovine bone mineral: A multicenter, noninferiority, randomized trial.","authors":"Jae-Kook Cha, Ui-Won Jung, Eduardo Montero-Solis, Ignacio Sanz-Sánchez, Mariano Sanz-Alonso","doi":"10.1111/cid.13386","DOIUrl":"https://doi.org/10.1111/cid.13386","url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the efficacy of guided bone regeneration (GBR) for the treatment of peri-implant dehiscence defects using a synthetic bone substitute (SBS) or a deproteinized bovine bone mineral (DBBM) as a bone substitute.</p><p><strong>Methods: </strong>Patients with expected dehiscence defects following implant placement were randomized to use either SBS or DBBM together with a bioabsorbable collagen membrane over dehiscenced implant surfaces aimed for GBR. The changes in the bone defect size were measured before the GBR procedure and 6 months after implant placement at the re-entry surgery. Secondary outcomes included peri-implant health outcomes, implant cumulative survival rates, bone level changes, and patient-reported outcomes (PROMs) at prosthesis delivery and 1-year follow-up.</p><p><strong>Results: </strong>Of the 49 included patients, 24 were treated with SBS and 25 with DBBM. In the SBS group, the defect height (DH) at implant insertion was 5.1 ± 2.6 mm and was reduced at re-entry to 1.3 ± 2.0 mm (74.5%). In the DBBM group, the respective changes in DH were 4.1 ± 1.7 mm and 1.5 ± 1.9 mm (63.4%). These differences were not statistically significant (p = 0.216). The complete defect resolution rate was also comparable in both groups without statistical difference (62.5% of patients (15/24) vs. 44% of patients (11/25)). Overall, the marginal bone levels remained stable during the 1-year follow-up in both groups.</p><p><strong>Conclusion: </strong>The SBS is noninferior to DBBM for simultaneous GBR to implant placement at implant sites with buccal dehiscences in terms of defect resolution and evaluated secondary outcomes (KCT0008393 - this clinical trial was not registered before participant recruitment and randomization).</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Patient and implant-related risk factors for implant failure of one-stage lateral sinus floor elevation: A 2- to 10-year retrospective study. 一期侧鼻窦底提升术种植失败的患者和种植体相关风险因素:一项为期 2 至 10 年的回顾性研究。
Pub Date : 2024-09-01 DOI: 10.1111/cid.13380
Mengdie Fu, Yuer Ye, Rui Pu, Danji Zhu, Guoli Yang, Zhiwei Jiang

Objectives: This retrospective study aimed to evaluate the early and late implant failure rates of one-stage lateral sinus floor elevation (LSFE) and to identify the patient and implant-related risk factors associated with these failures.

Materials and methods: All patients treated with one-stage LSFE from January 2014 to December 2021 were evaluated for inclusion. A total of 618 patients with 936 implants met the inclusion criteria. Clinical and radiographic information about patient and implants was collected. Univariate and multivariate Cox proportional hazards frailty regression models were performed to identify risk factors for early and late implant failure.

Results: The cumulative implant survival rate was 95.62% (95% CI 93.90%-97.68%), with 16 early implant failures and 25 late implant failures. The Cox analysis indicated that ≤3 mm residual bone height (RBH) was associated with a higher early failure rate. For late implant failure, smoking habit, ≤3 mm RBH, and certain implant brand were independent risk factors. Narrow sinus ostium, long infundibulum, and flat thickening of Schneiderian membrane might be non-independent risk factors for late implant failure. No significance was found in other variables, including age, periodontitis history, implant characteristics (position, diameter, length, protrusion length, marginal bone loss), surgeon experience, healing time, opposing dentition, and prosthesis.

Conclusions: One-stage LSFE is a predictable treatment for patients with atrophic maxilla. ≤3 mm RBH increased the risk of early implant failure, while smoking habit, ≤3 mm RBH, and certain implant brand were independent risk factors for late implant failure.

研究目的这项回顾性研究旨在评估一段式侧窦底提升术(LSFE)的早期和晚期种植失败率,并确定与这些失败相关的患者和种植体相关风险因素:评估纳入了2014年1月至2021年12月期间所有接受一段式LSFE治疗的患者。共有 618 名患者和 936 个种植体符合纳入标准。收集了患者和种植体的临床和影像学信息。建立了单变量和多变量考克斯比例危险虚弱回归模型,以确定早期和晚期植入失败的风险因素:结果:累计植入物存活率为 95.62%(95% CI 93.90%-97.68%),其中早期植入物失败 16 例,晚期植入物失败 25 例。Cox分析表明,残余骨高度(RBH)≤3毫米与较高的早期失败率有关。对于晚期种植失败,吸烟习惯、残余骨高度≤3毫米和某些种植体品牌是独立的风险因素。窦口窄、基底长和施奈德膜扁平增厚可能是种植体晚期失败的非独立风险因素。其他变量,包括年龄、牙周炎病史、种植体特征(位置、直径、长度、前突长度、边缘骨缺失)、外科医生经验、愈合时间、对生牙和修复体,均未发现显著性:RBH≤3毫米会增加种植体早期失败的风险,而吸烟习惯、RBH≤3毫米和某些种植体品牌是种植体晚期失败的独立风险因素。
{"title":"Patient and implant-related risk factors for implant failure of one-stage lateral sinus floor elevation: A 2- to 10-year retrospective study.","authors":"Mengdie Fu, Yuer Ye, Rui Pu, Danji Zhu, Guoli Yang, Zhiwei Jiang","doi":"10.1111/cid.13380","DOIUrl":"https://doi.org/10.1111/cid.13380","url":null,"abstract":"<p><strong>Objectives: </strong>This retrospective study aimed to evaluate the early and late implant failure rates of one-stage lateral sinus floor elevation (LSFE) and to identify the patient and implant-related risk factors associated with these failures.</p><p><strong>Materials and methods: </strong>All patients treated with one-stage LSFE from January 2014 to December 2021 were evaluated for inclusion. A total of 618 patients with 936 implants met the inclusion criteria. Clinical and radiographic information about patient and implants was collected. Univariate and multivariate Cox proportional hazards frailty regression models were performed to identify risk factors for early and late implant failure.</p><p><strong>Results: </strong>The cumulative implant survival rate was 95.62% (95% CI 93.90%-97.68%), with 16 early implant failures and 25 late implant failures. The Cox analysis indicated that ≤3 mm residual bone height (RBH) was associated with a higher early failure rate. For late implant failure, smoking habit, ≤3 mm RBH, and certain implant brand were independent risk factors. Narrow sinus ostium, long infundibulum, and flat thickening of Schneiderian membrane might be non-independent risk factors for late implant failure. No significance was found in other variables, including age, periodontitis history, implant characteristics (position, diameter, length, protrusion length, marginal bone loss), surgeon experience, healing time, opposing dentition, and prosthesis.</p><p><strong>Conclusions: </strong>One-stage LSFE is a predictable treatment for patients with atrophic maxilla. ≤3 mm RBH increased the risk of early implant failure, while smoking habit, ≤3 mm RBH, and certain implant brand were independent risk factors for late implant failure.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142115992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digital workflow for graft harvest and positioning in deficient anterior mandibles versus conventional technique: Randomized controlled trial. 下颌骨前部缺损的移植物采集和定位数字化工作流程与传统技术对比:随机对照试验。
Pub Date : 2024-08-30 DOI: 10.1111/cid.13382
Mohamed Ibrahim Sakr, Mahmoud Hanafy, Amr Gibaly, Mohamed Mounir

Background: The cortical shell technique is frequently associated with technical drawbacks, such as the lack of anatomical guidance during shell harvest and graft. This study aims to assess the horizontal bone gain and accuracy of a digitalized protocol that incorporates two interlocking patient-specific stackable guides (PSSGs) to control the shell harvest, positioning, and fixation.

Patients and methods: Twenty patients with deficient anterior mandibles were randomly allocated; 10 patients received freehand symphyseal shell harvest and fixation (the control group), whereas the other 10 received fully guided harvest and graft (study group) using (PSSGs), the first aided an accurate shell harvest, whereas the second conveyed shell fixation. The interposition gap among both groups was loaded with an equal mix of xenogeneic and autogenous particulates. The mean radiographic bone gain among both groups was calibrated 6 months postoperatively, and the accuracy of the digital plan was assessed by superimposing and comparing the virtually planned horizontal bone dimensions with the immediate postoperative actual bone dimensions.

Results: The mean 6-month postoperative horizontal bone gain value of the study group was recorded as (4.97 ± 0.73) mm versus (4.45 ± 0.61) mm for the control group, with a statistically insignificant mean gain difference of (0.52) mm, (p = 0.101). The mean virtual preplanned horizontal bone gain was recorded (5.4 ± 0.6) versus (5.4 ± 0.6) for the immediate postoperative actual bone gain, which was also statistically insignificant (p = 0.9).

Conclusion: The (PSSGs) provided a precise method for graft harvest, position, and fixation, resulting in satisfactory alveolar ridge dimensions with intimate accuracy.

背景:皮质骨壳技术经常存在技术缺陷,例如在骨壳采集和移植过程中缺乏解剖学指导。本研究旨在评估一种数字化方案的水平骨增量和准确性,该方案结合了两个互锁的患者特异性可堆叠导板(PSSG)来控制骨壳的采集、定位和固定:随机分配了20名下颌骨前部缺损的患者,其中10名患者接受了徒手骨骺壳摘取和固定(对照组),而另外10名患者则接受了完全引导下的骨骺壳摘取和移植(研究组)。两组间的间隙都装入了等量的异种和自种颗粒。术后 6 个月对两组患者的平均骨增量进行了校准,并通过叠加和比较虚拟规划的水平骨尺寸与术后即刻的实际骨尺寸来评估数字化计划的准确性:研究组术后 6 个月的平均水平骨增量值为(4.97 ± 0.73)毫米,对照组为(4.45 ± 0.61)毫米,平均增量差为(0.52)毫米,差异无统计学意义(P = 0.101)。虚拟预规划水平骨增量的平均值为(5.4 ± 0.6),而术后即刻实际骨增量为(5.4 ± 0.6),两者在统计学上差异也不显著(p = 0.9):结论:(PSSGs)为移植物的采集、定位和固定提供了一种精确的方法,可精确地获得令人满意的牙槽嵴尺寸。
{"title":"Digital workflow for graft harvest and positioning in deficient anterior mandibles versus conventional technique: Randomized controlled trial.","authors":"Mohamed Ibrahim Sakr, Mahmoud Hanafy, Amr Gibaly, Mohamed Mounir","doi":"10.1111/cid.13382","DOIUrl":"https://doi.org/10.1111/cid.13382","url":null,"abstract":"<p><strong>Background: </strong>The cortical shell technique is frequently associated with technical drawbacks, such as the lack of anatomical guidance during shell harvest and graft. This study aims to assess the horizontal bone gain and accuracy of a digitalized protocol that incorporates two interlocking patient-specific stackable guides (PSSGs) to control the shell harvest, positioning, and fixation.</p><p><strong>Patients and methods: </strong>Twenty patients with deficient anterior mandibles were randomly allocated; 10 patients received freehand symphyseal shell harvest and fixation (the control group), whereas the other 10 received fully guided harvest and graft (study group) using (PSSGs), the first aided an accurate shell harvest, whereas the second conveyed shell fixation. The interposition gap among both groups was loaded with an equal mix of xenogeneic and autogenous particulates. The mean radiographic bone gain among both groups was calibrated 6 months postoperatively, and the accuracy of the digital plan was assessed by superimposing and comparing the virtually planned horizontal bone dimensions with the immediate postoperative actual bone dimensions.</p><p><strong>Results: </strong>The mean 6-month postoperative horizontal bone gain value of the study group was recorded as (4.97 ± 0.73) mm versus (4.45 ± 0.61) mm for the control group, with a statistically insignificant mean gain difference of (0.52) mm, (p = 0.101). The mean virtual preplanned horizontal bone gain was recorded (5.4 ± 0.6) versus (5.4 ± 0.6) for the immediate postoperative actual bone gain, which was also statistically insignificant (p = 0.9).</p><p><strong>Conclusion: </strong>The (PSSGs) provided a precise method for graft harvest, position, and fixation, resulting in satisfactory alveolar ridge dimensions with intimate accuracy.</p>","PeriodicalId":93944,"journal":{"name":"Clinical implant dentistry and related research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142115989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Clinical implant dentistry and related research
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