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Outcomes of Surgical Treatment of Peri-Implantitis: A Retrospective Cohort Study. 种植体周围炎手术治疗的结果:一项回顾性队列研究。
Pub Date : 2025-01-17 DOI: 10.11607/jomi.11018
Claudia Ros-Alcaraz, Maria Camila Erazo-Puentes, Octavi Camps-Font, Marta García-García, Rui Figueiredo, Eduard Valmaseda-Castellón

Purpose: The available scientific evidence on the effectiveness of the surgical treatment of peri-implantitis is limited. The aim of this study was to assess the risk of recurrence or disease progression in patients with peri-implantitis that underwent surgical treatment.

Materials and methods: A retrospective cohort study was carried out in patients subjected to peri-implant surgery between 2015 and 2021, and with a minimum follow-up of 12 months. Data were analyzed using simple binary logistic regression models at patient level and generalized estimation equations at implant level.

Results: A total of 34 patients and 103 implants were analyzed (70 undergoing resective techniques and 33 regenerative procedures). Fifteen patients (44.12%) experienced peri-implantitis recurrence and one patient (2.9%) lost one implant. No differences were found between the surgical techniques (p = 0.56). A history of periodontitis (ORa = 4.62; 95%CI: 1.14 to 18.75; p = 0.032), maxillary location (ORa = 9.69; 95%CI: 1.81 to 51.87; p = 0.008) and two implants treated per procedure (ORa = 31.68; 95%CI: 3.91 to 256.54; p = 0.001) were seen to increase the risk of recurrence.

Conclusions: Almost half of all patients (44%) undergoing surgical treatment of periimplantitis will present disease progression or recurrence. This risk seems to be higher in patients with several treated implants, with a history of periodontal disease, or when the maxilla is involved.

目的:关于手术治疗种植体周围炎的有效性,现有的科学证据有限。本研究的目的是评估接受手术治疗的种植体周围炎患者复发或疾病进展的风险。材料与方法:对2015 - 2021年间行种植体周围手术的患者进行回顾性队列研究,随访时间至少为12个月。在患者水平使用简单的二元逻辑回归模型,在种植体水平使用广义估计方程对数据进行分析。结果:共分析了34例患者和103个种植体(70例进行了切除技术,33例进行了再生手术)。种植体周围炎复发15例(44.12%),种植体丢失1例(2.9%)。手术技术间无差异(p = 0.56)。牙周炎病史(ORa = 4.62;95%CI: 1.14 ~ 18.75;p = 0.032),上颌定位(ORa = 9.69;95%CI: 1.81 ~ 51.87;p = 0.008),每次手术治疗2个种植体(ORa = 31.68;95%CI: 3.91 ~ 256.54;P = 0.001)会增加复发风险。结论:几乎一半(44%)接受手术治疗的患者会出现疾病进展或复发。在接受过多次治疗的种植体患者、有牙周病史的患者或上颌受损伤的患者中,这种风险似乎更高。
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引用次数: 0
Paired-Related Homeobox 1-Positive Cells Are Needed for Osseointegration. 骨结合需要成对相关同源框 1 阳性细胞
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10852
Xi Feng, Haicheng Wang, Yuteng Weng, Yongliang Chen, Jie Huang, Zuolin Wang

Purpose: To explore the contribution of paired-related homeobox 1-positive (Prrx1+) cells to the implant-induced osseointegration process in adult alveolar bone and the potential underlying mechanisms.

Materials and methods: Crerecombinase-induced lineage tracing and cell ablation were conducted in a murine dental implant model. Scratch and transwell assays were used to assess MC3T3-E1 cell migration after paired-related homeobox 1 overexpression. Single-cell RNA sequencing was applied to identify potential genes involved in Prrx1+ cell-driven osteogenesis.

Results: Prrx1+ cells were observed to accumulate in the peri-implant area in a time-dependent manner; the number of these cells was found to reach its maximum on day 14. Osseointegration in mice was noticeably impaired after ablation of Prrx1+ cells. Further, it was discovered that Prrx1 promotes MC3T3-E1 cell migration, a process which is indispensable for sound healing of peri-implant tissue. Finally, semaphorin 3C (Sema3C) was detected exclusively and abundantly expressed by Prrx1+ cells. Knockdown of Sema3C in Prrx1+ cells significantly weakened their osteogenic potential.

Conclusions: Our data suggest that Prrx1+ cells contribute to the osseointegration process under stress stimulation and Sema3C may play a critical role in Prrx1+ cell-driven osteogenesis. Prrx1 could significantly promote MC3T3-E1 cell migration.

目的:探讨成对相关同源染色体 1 阳性细胞对成人牙槽骨种植体诱导的骨结合过程的贡献及其潜在的内在机制:在小鼠牙种植模型中进行了Cre重组酶诱导的品系追踪和细胞消融。使用划痕和跨孔试验评估配对相关同源染色体 1 过度表达后 MC3T3-E1 细胞的迁移。应用单细胞RNA测序鉴定参与配对相关同源染色体1阳性细胞驱动成骨的潜在基因:结果:观察到成对相关homeobox 1-阳性细胞以时间依赖性的方式在种植体周围区域聚集。这些细胞的数量在第 14 天达到最大值。消减配对相关同源染色体 1 阳性细胞后,小鼠的骨结合明显受损。此外,研究还发现配对相关同形体 1 能促进 MC3T3- E1 细胞迁移,而这一过程是种植体周围组织健全愈合所不可或缺的。最后,在配对相关同源框 1 阳性的细胞中检测到了大量表达的semaphorin 3C。在配对相关同工酶 1- 阳性细胞中敲除 Semaphorin 3C 会显著削弱其成骨潜能:我们的数据表明,配对相关同工酶1阳性细胞在应力刺激下有助于骨结合过程,而半aphorin 3C 可能在配对相关同工酶1阳性细胞驱动的成骨过程中发挥关键作用。配对相关同源框 1 能显著促进 MC3T3-E1 细胞迁移。
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引用次数: 0
Extracorporeal Shockwave Therapy (ESWT)-A Novel Method for Transferring Oral Implant Primary Failures to Final Clinical Success: A Test Case Report Followed up for More Than 6 Years. 体外冲击波疗法 (ESWT),一种将口腔种植失败转为最终临床成功的新方法:超过 6 年的试验病例跟踪报告。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10820
Luis Amengual, Manuel Brañes, Francisco Marchesani, Leopodo Parada, Maria Constanza Jara, Tomas Albrektsson

Purpose: To evaluate the feasibility of reversing a primary failure through therapeutic mechanical stimulation induced by transcutaneous application of acoustic waves (extracorporeal shockwave therapy [ESWT]) in the peri-implant tissues.

Materials and methods: This clinical report evaluates the outcome of a new protocol proposed to treat a primary failure (loosened oral implant): application of three cycles of ESWT (one session per week for 3 consecutive weeks) with an equivalent positive energy of 0.18 mJ/mm2 (therapeutic dose: 2,000 pulses, 8 Hz, 4.0 bar). Standardized intraoral radiographs and CBCT scans were taken, the implant stability quotient (ISQ) was determined, and clinical evaluations were performed.

Results: It was possible to verify a progressive increase in ISQ values after the ESWT protocol: 17 initially, 46 at 2 months, and 68 at 4 months. This led to successful implant prosthetic rehabilitation (35 Ncm). Follow-up evaluations at 6 years confirm that the new bone-implant interface is preserved and that ESWT is a safe, noninvasive treatment.

Conclusions: In the context of the new dynamic model of osseointegration (the foreign body equilibrium), this represents the first report of a host-implant equilibrium reestablished after an early implant failure process. However, more studies are needed to determine both the medical device and the most effective therapeutic range for clinical applications of this technology in oral implantology.

目的:评估通过经皮声波疗法(ESWT)对种植体周围组织进行治疗性机械刺激来逆转初次失败的可行性。材料和方法:本临床报告评估了为治疗原发性失败(口腔种植体松动)而提出的新方案的效果;ESWT 应用三个周期,每周一次,连续 3 周,等效正能量为 0.18 mJ/mm²(治疗剂量:2000 脉冲/8 赫兹/4.0 巴)。进行了标准化的口内X光片、锥形束计算机断层扫描(CBCT)、种植体稳定性商数(ISQ)和临床评估:结果:经过 ESWT 治疗后,ISQ 值逐渐增加:17(初始值)、46(两个月后)和 68(四个月后),从而成功实现了种植修复(测量值为 35 N/cm)。6 年的随访评估证实,新的骨-种植体界面得到了保护,ESWT 是一种安全的非侵入性治疗方法:结论:在新的骨结合动态模型--异物平衡(FBE)的背景下,这是第一例在早期失败过程后重建宿主-种植体平衡的报告。不过,有必要进行研究,以确定在口腔种植中临床应用该技术的医疗设备和最有效的治疗范围。
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引用次数: 0
Immediate Placement and Loading of Maxillary Single-Tooth Scalloped Implants and Digitally Customized Restorations: A 5-Year Prospective Study of Marginal Bone Level. 上颌单牙扇形种植体和数字化定制修复体的即刻植入和加载:边缘骨水平的 5 年前瞻性研究。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10965
Antoine N Berberi

Purpose: To evaluate over 5 years the mesial, distal, palatal, and buccal bone levels as well as the buccal bone thickness surrounding scalloped implants that were immediately placed and loaded with provisional crowns fixed on final prefabricated abutments.

Materials and methods: A total of 18 implants were placed and immediately loaded using CAD/CAM technology in 18 patients to replace a single tooth in the anterior maxilla. The marginal bone levels around the scalloped implant necks were measured mesially and distally using intraoral standardized radiographs after crown placement as well as at the 1-, 3-, and 5-year follow-ups. CBCT para-axial cut images were used to measure the bone level buccally and palatally from the implant neck to the bone-to-implant contact (BIC) 5 years after loading. These images were used to evaluate the thickness of the buccal bone at the implant neck and 4 mm apically both immediately after implant placement (T0) and 5 years later.

Results: All implants were assessed clinically and radiologically after 5 years. No implant failure was recorded, and the average marginal bone variation for mesial and distal sites was as follows: 0.114 ±0.135 mm at crown cementation, 0.239 ± 0.158 mm 1 year later, 0.233 ± 0.182 mm 3 years later, and 0.180 ± 0.182 mm 5 years later. Our findings indicate that at T0, the average thickness of the buccal bone was 2.27 mm at the implant neck (M0; ranging from 1.9 to 2.4 mm) and 2.33 mm at 4 mm apical to the implant neck (M1; ranging from 1.9 to 2.9 mm). At 5 years postoperative (T4), the mean had decreased to 1.94 mm at M0 (ranging from 1.7 to 2.3 mm) and 2.14 mm at M1 (ranging from 1.8 to 2.4 mm). After 5 years of functional loading, the mean changes at the buccal and palatal bone for all implants were +0.187 ± 0.52 mm and +0.06 ± 0.38 mm, respectively. Minor prosthetic problems were observed over the 5 years, including incisal ceramic chipping in two crowns and replacement of two crowns due to esthetic reasons after 1 year. No loosening of crowns or abutments was reported.

Conclusions: Scalloped-neck implants demonstrated a comparable behavior to regular-neck implants with similar designs in immediate placement and temporization protocol over a 5-year period.

材料和方法:采用计算机辅助设计/计算机辅助制造技术,为18名患者植入18颗种植体,并用临时牙冠固定在最终预制基台上。在牙冠固定后以及 1 年、3 年和 5 年后,使用口内标准化 X 光片测量了扇形种植体颈部中、远端的边缘骨水平。锥形束计算机断层扫描准轴切面图像用于测量种植体植入5年后颊侧和腭侧从种植体颈部到种植体与骨接触处的骨水平,并评估种植体植入后立即和5年后种植体颈部和根尖4毫米处的颊骨厚度:所有种植体均在 5 年后接受了临床和放射学评估。没有种植失败的记录,牙冠固位时中轴和远轴处的平均边缘骨变异为 0.114 ± 0.135 毫米,1 年后为 0.239 ± 0.158 毫米,3 年后为 0.233 ± 0.182 毫米,5 年后为 0.180 ± 0.182 毫米。我们的研究结果表明,在 T0 期,种植体颈 M0 处的颊骨平均厚度为 2.27 毫米(从 1.9 毫米到 2.4 毫米不等),种植体颈 M1 距根尖 4 毫米处的颊骨平均厚度为 2.33 毫米(从 1.9 毫米到 2.9 毫米不等)。到了 T4,M0 的平均值下降到 1.94 mm(范围在 1.7 mm 到 2.3 mm 之间),M1 的平均值下降到 2.14 mm(范围在 1.8 mm 到 2.4 mm 之间)。5 年后,所有种植体的颊骨和腭骨的平均变化分别为 +0.187 ± 0.52 毫米和 +0.06 ± 0.38 毫米。五年来,修复体出现了一些小问题:两个牙冠出现了切缘陶瓷崩裂,两个牙冠在一年后因美观原因被更换。没有出现牙冠或基台松动的情况:在为期五年的即刻种植和临时修复方案中,扇形颈部种植体的表现与具有类似设计的普通颈部种植体相当。
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引用次数: 0
Influence of Ti-Base-Supported Implant Restoration on Peri- implant Conditions: A Systematic Review and Meta-analysis. 钛基托种植体修复对种植体周围条件的影响:系统回顾与元分析
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10924
Han-Pang Liu, Sieu Yien Chiam, Hom-Lay Wang

Purpose: To conduct a systematic review and meta-analysis to examine the impact of titanium (Ti) base-supported single-implant restorations on peri-implant conditions.

Materials and methods: Six randomized controlled trials (RCTs) comprising 274 implants met the inclusion criteria and were chosen for data analysis. A random-effects model was employed for the meta-analysis.

Results: Data from this study revealed that the Ti-basegroup exhibited a small but statistically significant increase in peri-implant marginal bone loss (MBL; mean difference = 0.088 mm; 95% CI = 0.003 to 0.17; P = .041) compared to the one-piece abutment group. These effects were consistent in the subgroup analysis of regularly threaded implants compared to the microthreaded subgroup. No significant differences were observed between the Ti-base group and the abutment group concerning probing depth (PD), bleeding on probing (BoP), and the risk of prosthetic-related complications.

Conclusions: The use of a Ti-base in a single implant-supported restorationis associated with a slight increase in peri-implant MBL, while other peri-implant health parameters show no significant correlation. Therefore, the evidence of the impact that Ti-bases have on the peri-implant conditions of single implant-supported restorations is insufficient based on the findings of the present meta-analysis.

目的:本系统综述和荟萃分析旨在研究钛基底支持的单颗种植体修复体对种植体周围条件的影响:我们选择了六项随机对照试验(RCT)进行数据分析,共有 274 个种植体符合纳入标准。荟萃分析采用随机效应模型:研究数据显示,与一体式基台组相比,钛基台组的种植体周围边缘骨质流失略有增加,但具有统计学意义(平均值差异 = 0.088,95% 置信区间 = 0.003 到 0.17,P = 0.041)。在常规螺纹种植体与微螺纹种植体的亚组分析中,这些影响是一致的。然而,在探诊深度(PD)、探诊出血量(BOP)和修复体相关并发症的风险方面,钛基底组与基台组之间没有观察到明显的差异:结论:在单种植体支持修复中使用钛基底与种植体周围边缘骨丧失的轻微增加有关,而其他种植体周围健康参数则没有明显的相关性。因此,根据这项荟萃分析的结果来确定钛基底对单种植体支持修复体种植体周围条件的影响是不够的。
{"title":"Influence of Ti-Base-Supported Implant Restoration on Peri- implant Conditions: A Systematic Review and Meta-analysis.","authors":"Han-Pang Liu, Sieu Yien Chiam, Hom-Lay Wang","doi":"10.11607/jomi.10924","DOIUrl":"10.11607/jomi.10924","url":null,"abstract":"<p><strong>Purpose: </strong>To conduct a systematic review and meta-analysis to examine the impact of titanium (Ti) base-supported single-implant restorations on peri-implant conditions.</p><p><strong>Materials and methods: </strong>Six randomized controlled trials (RCTs) comprising 274 implants met the inclusion criteria and were chosen for data analysis. A random-effects model was employed for the meta-analysis.</p><p><strong>Results: </strong>Data from this study revealed that the Ti-basegroup exhibited a small but statistically significant increase in peri-implant marginal bone loss (MBL; mean difference = 0.088 mm; 95% CI = 0.003 to 0.17; P = .041) compared to the one-piece abutment group. These effects were consistent in the subgroup analysis of regularly threaded implants compared to the microthreaded subgroup. No significant differences were observed between the Ti-base group and the abutment group concerning probing depth (PD), bleeding on probing (BoP), and the risk of prosthetic-related complications.</p><p><strong>Conclusions: </strong>The use of a Ti-base in a single implant-supported restorationis associated with a slight increase in peri-implant MBL, while other peri-implant health parameters show no significant correlation. Therefore, the evidence of the impact that Ti-bases have on the peri-implant conditions of single implant-supported restorations is insufficient based on the findings of the present meta-analysis.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"815-822"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141094764","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
Self-Correcting. 自我校正。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.2024.6.e
Clark M Stanford
{"title":"Self-Correcting.","authors":"Clark M Stanford","doi":"10.11607/jomi.2024.6.e","DOIUrl":"https://doi.org/10.11607/jomi.2024.6.e","url":null,"abstract":"","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"39 6","pages":"808"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820521","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
Implant Failure and Marginal Bone Loss Between Axial and Tilted Implants: An Umbrella Review with Meta-analysis. 轴向和倾斜种植体之间的种植失败和边缘骨损失:带 Meta 分析的总综述。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10885
Ahmad Al Malak, Yasmina El Masri, Jad El Masri, Hassan Al Issawi, Pascale Salameh, Georges Aoun

Purpose: To summarize and analyze all the evidence available concerning marginal bone loss (MBL) and implant failure between tilted and axial implants.

Materials and methods: An electronic literature search was conducted without any language restrictions, and only systematic reviews with meta-analysis or meta-analysis studies were included. Relative risks (RRs) and the differences in mean (MD) were calculated with 95% confidence intervals (CIs) for the assessed outcomes (in mm) of implant failure and MBL.

Results: In total, eight studies were included. Based on the short-term results, a nonsignificant mean difference (MD = 0.00; 95% CI; -0.01-0.02; P value = .75) was recorded between tilted and axial implants supporting full-arch dentures. A significant mean difference was recorded at 3-year follow-up (MD = 0.08 95% CI= 0.05-0.11; P value < .00001) and at long-term follow-up (MD = 0.18; 95% CI = 0.15-0.20; P value < .00001). A nonsignificant difference was observed between tilted and axial implants regarding implant failure (RR = 1.02; 95% CI = 0.85-1.23;P value = .81).

Conclusions: Based on the high- and moderate-quality studies with low risk of bias included in this review, no significant difference in outcome regarding implant failure was observed between tilted and axial implants supporting full-arch or fixed partial dentures.

目的:一些解剖学和组织学方面的限制会使种植体植入变得复杂,而倾斜种植体的定位似乎可以弥补这些限制。然而,一些研究表明,与传统种植体相比,倾斜种植体的边缘骨损失和种植失败率更高。因此,本综述旨在总结和分析有关倾斜种植体和轴向种植体边缘骨质流失和种植失败的所有证据:方法:我们进行了电子文献检索,没有任何语言限制,只纳入了具有荟萃分析或荟萃分析研究的系统综述。本综述评估的结果是种植失败和边缘骨质流失(以毫米为单位)。结果:共纳入 8 项研究,根据短期结果,平均差异不显著(MD=0.00;95% 置信区间;-0.01-0.02;p 值 = 0.75),而在 3 年的长期随访中,平均差异显著(MD= 0.08 95% 置信区间 = 0.05-0.11;p 值 = 0.75)。
{"title":"Implant Failure and Marginal Bone Loss Between Axial and Tilted Implants: An Umbrella Review with Meta-analysis.","authors":"Ahmad Al Malak, Yasmina El Masri, Jad El Masri, Hassan Al Issawi, Pascale Salameh, Georges Aoun","doi":"10.11607/jomi.10885","DOIUrl":"10.11607/jomi.10885","url":null,"abstract":"<p><strong>Purpose: </strong>To summarize and analyze all the evidence available concerning marginal bone loss (MBL) and implant failure between tilted and axial implants.</p><p><strong>Materials and methods: </strong>An electronic literature search was conducted without any language restrictions, and only systematic reviews with meta-analysis or meta-analysis studies were included. Relative risks (RRs) and the differences in mean (MD) were calculated with 95% confidence intervals (CIs) for the assessed outcomes (in mm) of implant failure and MBL.</p><p><strong>Results: </strong>In total, eight studies were included. Based on the short-term results, a nonsignificant mean difference (MD = 0.00; 95% CI; -0.01-0.02; P value = .75) was recorded between tilted and axial implants supporting full-arch dentures. A significant mean difference was recorded at 3-year follow-up (MD = 0.08 95% CI= 0.05-0.11; P value < .00001) and at long-term follow-up (MD = 0.18; 95% CI = 0.15-0.20; P value < .00001). A nonsignificant difference was observed between tilted and axial implants regarding implant failure (RR = 1.02; 95% CI = 0.85-1.23;P value = .81).</p><p><strong>Conclusions: </strong>Based on the high- and moderate-quality studies with low risk of bias included in this review, no significant difference in outcome regarding implant failure was observed between tilted and axial implants supporting full-arch or fixed partial dentures.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"875-883"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141474223","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
Molecular Analysis of Peri-implant Soft Tissue Response to Different Abutment Materials in Humans: A Pilot Study. 人类种植体周围软组织对不同基台材料反应的分子分析。试点研究。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10910
Andrea Pilloni, Lorenzo Marini, Nicoletta Gagliano, Claudia Dellavia, Gaia Pellegrini, Dolaji Henin, Blerina Zeza, Mariana Andrea Rojas

Purpose: To evaluate the response of human peri-implant soft tissue (PIST) to different healing abutment materials 24 hours after positioning by assessing the expression of genes related to the early connective tissue wound healing response.

Materials and methods: The following four materials were used to create experimental abutments that were mounted on implants placed in five patients (four different abutments in each patient): group A-grade 4 titanium (Ti), group B-grade 5 Ti, group C-zirconia (Zr), and group D-polyetheretherketone (PEEK). Before implant placement, a gingival biopsy (control, CT) sample was obtained using a 2-mm-diameter punch (T0). After 24 hours, PIST biopsy samples were collected using a specifically designed custom-made cutting device. Real-time polymerase chain reaction (PCR) was performed to analyze the expression of the following genes: COL-I, COL-III, MMP-1, TIMP-1, TGF-β1, FN, ITGA4, ITGA5, ITGB1, RAC-1, COL-IV, αSMA, IL-6, and CXCL-1.

Results: Gene expression analysis showed some differences between CT and the experimental groups; however, no significant differences were detected when comparing the experimental groups. COL-I was significantly downregulated in groups A and C compared to CT. Expression of MMP-1 and TIMP-1 increased in all the experimental groups but to a lesser extent in group A. FN, RAC-1, COL-IV, and αSMA were downregulated, especially ingroup A, in which CXCL-1 and IL-6 showed the lowest expression.

Conclusions: The results of grade 4 Ti and Zr abutments seem to be promising, because a lower expression of genes related to inflammation, myofibroblast activation, and extracellular matrix remodeling was observed when compared with grade 5 Ti and PEEK, without triggering a profibrotic response in the early phases of PIST repair.

目的:通过评估与早期结缔组织伤口愈合反应相关的基因表达,评估人类种植体周围软组织(PIST)在植入24小时后对不同愈合基台材料的反应:将 4 种不同材料的实验基台(A):4 级钛合金、(B)5 级钛合金、(C)氧化锆和(D)PEEK 安装在 5 名患者已安装的种植体上,每种基台四种不同的材料。种植体植入前,使用直径为 2 毫米的打孔器进行牙龈活检(对照-CT)(T0)。24 小时后(T24),使用专门设计的定制切割装置采集 PIST 活检组织。进行实时 PCR 分析以下基因的表达:COL-I、COL-III、MMP-1、TIMP-1、TGF-b1、FN、ITGA4、ITGA5、ITGB1、RAC-1、COL-IV、aSMA、IL-6 和 CXCL-1:基因表达分析表明,不同材料的 CT 和基台之间存在一些差异,但实验组之间没有发现显著差异。与 CT 相比,A 组和 C 组的 COL-I 明显下调。FN、RAC-1、COL-IV 和 aSMA 均下调,尤其是在 A 组,其中 CXCL-1 和 IL-6 的表达量最低:结论:与 5 级钛和 PEEK 相比,4 级钛和氧化锆基台与炎症、肌成纤维细胞活化和 ECM 重塑相关的基因表达较低,不会在 PIST 修复的早期阶段引发促纤维化反应,因此 4 级钛和氧化锆基台的结果似乎很有希望。
{"title":"Molecular Analysis of Peri-implant Soft Tissue Response to Different Abutment Materials in Humans: A Pilot Study.","authors":"Andrea Pilloni, Lorenzo Marini, Nicoletta Gagliano, Claudia Dellavia, Gaia Pellegrini, Dolaji Henin, Blerina Zeza, Mariana Andrea Rojas","doi":"10.11607/jomi.10910","DOIUrl":"10.11607/jomi.10910","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the response of human peri-implant soft tissue (PIST) to different healing abutment materials 24 hours after positioning by assessing the expression of genes related to the early connective tissue wound healing response.</p><p><strong>Materials and methods: </strong>The following four materials were used to create experimental abutments that were mounted on implants placed in five patients (four different abutments in each patient): group A-grade 4 titanium (Ti), group B-grade 5 Ti, group C-zirconia (Zr), and group D-polyetheretherketone (PEEK). Before implant placement, a gingival biopsy (control, CT) sample was obtained using a 2-mm-diameter punch (T0). After 24 hours, PIST biopsy samples were collected using a specifically designed custom-made cutting device. Real-time polymerase chain reaction (PCR) was performed to analyze the expression of the following genes: COL-I, COL-III, MMP-1, TIMP-1, TGF-β1, FN, ITGA4, ITGA5, ITGB1, RAC-1, COL-IV, αSMA, IL-6, and CXCL-1.</p><p><strong>Results: </strong>Gene expression analysis showed some differences between CT and the experimental groups; however, no significant differences were detected when comparing the experimental groups. COL-I was significantly downregulated in groups A and C compared to CT. Expression of MMP-1 and TIMP-1 increased in all the experimental groups but to a lesser extent in group A. FN, RAC-1, COL-IV, and αSMA were downregulated, especially ingroup A, in which CXCL-1 and IL-6 showed the lowest expression.</p><p><strong>Conclusions: </strong>The results of grade 4 Ti and Zr abutments seem to be promising, because a lower expression of genes related to inflammation, myofibroblast activation, and extracellular matrix remodeling was observed when compared with grade 5 Ti and PEEK, without triggering a profibrotic response in the early phases of PIST repair.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"235-249"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141094766","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
One-Piece CAD/CAM Abutment for Screw-Retained Single- Tooth Restorations: A 5-Year Prospective Cohort Study. 用于螺钉固位单牙修复体的一体式 CAD/CAM 基台:一项为期 5 年的前瞻性队列研究。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10843
Andrea Parpaiola, Marco Toia, Michael Norton, Christian Bacci, Claudia Todaro, Ruggero Rodriguez Y Baena, Saturnino Marco Lupi

Purpose: To evaluate the clinical performance of implant-prosthetic rehabilitations carried out using ceramic-coated CAD/CAM titanium abutments.

Materials and methods: Thirty implants were placed in 30 patients and rehabilitated with 30 single crowns attached to CAD/CAM titanium abutments. A conventional procedure was applied, implants were placed after postextraction socket healing, and prosthetic restorations were placed after implant healing. Implant lengths ranged from 6 to 15 mm, and widths were 3.6, 4.2, and 4.8 mm. At the time of prosthesis delivery (T0), after 2 years (T1), and after 5 years (T2), the Plaque Index (PI), bleeding on probing (BoP), pocket probing depth (PPD), marginal bone level (MBL), and pink/white esthetic scores (PES/WES) were evaluated for each implant.

Results: No patient dropped out of the study during the follow-up period. All 30 implants were clinically successful 5 years after prosthesis delivery (survival rate: 100%) and showed no signs of peri-implant infection. Peri-implant soft tissues were in good health (BoP at T2: 0% in 73% of patients; 25% in 13% of patients; 50% in 10% of patients; and 75% in 3% of patients). The mean PPD was 2.05 ± 0.56 mm at T0, 1.992 ± 0.6 mm at T1, and 1.867 ± 0.439 mm at T2. The mean MBL was 0.413 ± 0.440 mm at T0, 0.306 ± 0.388 mm at T1, and 0.263 ± 0.368 mm at T2. The mean PES, WES, and PES/WES indices (7.43 ± 1.04, 7.57 ± 0.82, and 15.00 ± 1.17, respectively) indicate good integration of soft tissues, satisfactory esthetics, and overall positive outcomes.

Conclusions: The success rates, maintenance of MBLs, and periodontal and esthetic indices suggest the validity of implant-prosthetic rehabilitations with CAD/CAM abutments in cases of single crowns.

背景:使用陶瓷涂层的患者专用 CAD/CAM 钛基台是修复单颗牙齿的一种治疗选择。使用高度定制化的基台可以对修复体进行精确的三维定位。本研究评估了使用陶瓷涂层 CAD/CAM 钛基台进行种植修复的临床表现:在 30 名患者身上植入了 30 个种植体,并在 CAD/CAM 钛基台上安装了 30 个单冠进行修复。采用常规程序,在拔牙后牙槽骨愈合后植入种植体,在种植体愈合后进行修复。本研究使用的种植体长度为 6-15 毫米,宽度为 3.6、4.2 和 4.8 毫米。在修复体交付时(T0)、两年后(T1)和五年后(T2),对每个种植体的牙菌斑(PI)和出血(BoP)指数、探诊深度(PPD)、边缘骨水平(MBL)和 PES/WES 进行了评估:随访期间没有患者退出研究。所有 30 个种植体在假体植入后五年内均临床成功(存活率:100%),且没有种植体周围感染的迹象。种植体周围软组织健康状况良好(T2时的BoP:73%的患者为0%;13%的患者为25%;10%的患者为50%;3%的患者为75%)。T0 时的平均 PPD 为 2.05±0.56mm,T1 时为 1.992±0.6mm,T2 时为 1.867±0.439mm。T0时的平均MBL为0.413±0.440毫米,T1时为0.306±0.388毫米,T2时为0.263±0.368毫米。平均 PES、WES 和 PES/WES 指数分别为 7.43±1.04、7.57±0.82 和 15.00±1.17,表明软组织整合良好,美观度令人满意,总体效果良好:成功率、边缘骨水平的维持以及牙周和美学指数表明,在单冠病例中使用 CAD/CAM 基台进行种植修复是有效的。
{"title":"One-Piece CAD/CAM Abutment for Screw-Retained Single- Tooth Restorations: A 5-Year Prospective Cohort Study.","authors":"Andrea Parpaiola, Marco Toia, Michael Norton, Christian Bacci, Claudia Todaro, Ruggero Rodriguez Y Baena, Saturnino Marco Lupi","doi":"10.11607/jomi.10843","DOIUrl":"10.11607/jomi.10843","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the clinical performance of implant-prosthetic rehabilitations carried out using ceramic-coated CAD/CAM titanium abutments.</p><p><strong>Materials and methods: </strong>Thirty implants were placed in 30 patients and rehabilitated with 30 single crowns attached to CAD/CAM titanium abutments. A conventional procedure was applied, implants were placed after postextraction socket healing, and prosthetic restorations were placed after implant healing. Implant lengths ranged from 6 to 15 mm, and widths were 3.6, 4.2, and 4.8 mm. At the time of prosthesis delivery (T0), after 2 years (T1), and after 5 years (T2), the Plaque Index (PI), bleeding on probing (BoP), pocket probing depth (PPD), marginal bone level (MBL), and pink/white esthetic scores (PES/WES) were evaluated for each implant.</p><p><strong>Results: </strong>No patient dropped out of the study during the follow-up period. All 30 implants were clinically successful 5 years after prosthesis delivery (survival rate: 100%) and showed no signs of peri-implant infection. Peri-implant soft tissues were in good health (BoP at T2: 0% in 73% of patients; 25% in 13% of patients; 50% in 10% of patients; and 75% in 3% of patients). The mean PPD was 2.05 ± 0.56 mm at T0, 1.992 ± 0.6 mm at T1, and 1.867 ± 0.439 mm at T2. The mean MBL was 0.413 ± 0.440 mm at T0, 0.306 ± 0.388 mm at T1, and 0.263 ± 0.368 mm at T2. The mean PES, WES, and PES/WES indices (7.43 ± 1.04, 7.57 ± 0.82, and 15.00 ± 1.17, respectively) indicate good integration of soft tissues, satisfactory esthetics, and overall positive outcomes.</p><p><strong>Conclusions: </strong>The success rates, maintenance of MBLs, and periodontal and esthetic indices suggest the validity of implant-prosthetic rehabilitations with CAD/CAM abutments in cases of single crowns.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"911-921"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140878304","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
Changes in the Maxillary Sinus Membrane Thickness and Sinus Health Following Lateral Sinus Floor Elevation: Comparing Preoperative Mucosal Thicknesses of < 5 mm and > 5 mm. 上颌窦底侧方抬高术后上颌窦膜厚度和上颌窦健康的变化:术前粘膜厚度小于和大于 5 毫米的比较。
Pub Date : 2024-12-11 DOI: 10.11607/jomi.10839
Kazem Khiabani, Farzaneh Nourbakhshian, Mohammad Hosein Amirzade-Iranaq

Purpose: To investigate the effect of lateral sinus floor elevation (LSFE) on sinus membrane (SM) thickness and sinus health in mucosa thickness < 5 mm and > 5 mm.

Materials and methods: LSFE was performed in a prospective controlled clinical trial on two groups with < 5 mm and > 5 mm SM thickness (Groups A and B, respectively) and followed for 6 months. Using preoperative and 6-month postoperative CBCT scans and clinical evaluation, SM thickness changes (primary outcome variable), sinus health, augmented bone height and length (augmentation adequacy), membrane-related variables, and operation time were measured.

Results: Forty unilateral sinus augmentations (n = 20 for both groups) were performed on 40 subjects (72.5% men, mean age of 48.8 ± 7.6 years), and 52 implants were simultaneously placed. The mean preoperative and 6-month SM thicknesses were 1.4 ± 0.9 mm and 1.3 ± 0.6 mm in Group A, respectively, and were 6.8 ± 1.0 and 3.4 ± 1.7 mm in Group B, respectively. The mean postoperative SM thickness significantly decreased (P < .001) only in Group B. The mean SM thickness changes also revealed a noticeable difference between the two groups (P < .001). Augmentation adequacy and membrane perforation rate were similar in both groups. Clinical and radiographic rhinosinusitis was not detected in any of the patients. Bleeding during separation and resistance to elevation were significantly higher in Group B than in Group A (P = .003, P = .001). Surgical time was longer in Group B (12.08 ± 8.26 minutes) than in Group A (8.64 ± 3.70 minutes), without reaching significance (P = .097).

Conclusions: LSFE in thickened mucosa (< 10 mm) and thinner mucosa (< 5 mm) does not cause abnormal changes in the SM and sinus health. LSFE in thickened mucosa results in adequate sinus augmentation. The thickened membrane does not appear to be a contraindication to LSFE.

目的:研究侧向窦底抬高术(LSFE)对粘膜厚度小于和大于 5 毫米的窦膜(SM)厚度和窦健康的影响:在一项前瞻性对照临床试验中,对粘膜厚度小于和大于 5 毫米的两组患者(A 组和 B 组)进行了 LSFE,并随访 6 个月。通过术前和术后 6 个月的 CBCT 和临床评估,测量了 SM 厚度变化(主要结果变量)、鼻窦健康、增量骨高度和长度(增量充分性)、膜相关变量和手术时间:对 40 名受试者(72.5% 为男性,平均年龄为 48.8±7.6)进行了 40 次单侧鼻窦增量手术(A:20、B:20),同时安装了 52 个固定装置。A 组和 B 组术前和术后 6 个月的平均 SM 厚度分别为 1.4±0.9 毫米和 1.3±0.6 毫米,以及 6.8±1.0 毫米和 3.4±1.7 毫米。术后平均 SM 厚度明显降低(PConclusions:粘膜增厚(≤10 mm)和粘膜变薄(≤5 mm)的 LSFE 不会导致窦膜和窦健康发生异常变化。在粘膜增厚的情况下,LSFE 可以实现适当的窦增量。增厚的 SM 也显示出明显的厚度减少。增厚的黏膜似乎并不是 SFE 的禁忌症。
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The International journal of oral & maxillofacial implants
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