Clinical Oral Implants Research最新文献_第10页

Early implant placement versus ridge preservation and delayed implant placement: Analysis of profilometric, clinician- and patient-reported outcomes from a two-centre RCT 早期植入种植体与保留牙脊和延迟植入种植体：对一项双中心 RCT 的轮廓测量、临床医生和患者报告结果的分析。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-04 DOI: 10.1111/clr.14325

Daniel Thoma, Alfonso Gil, Thomas de Bruyckere, Ronald E. Jung, Shunsuke Fukuba, Axelle Ickroth, Franz J. Strauss, Jan Cosyn

Objectives

To compare early implant placement (EP) to alveolar ridge preservation and delayed implant placement (ARP/DP) in terms of contour changes, along with clinician- and patient-reported outcome measures (PROMs) until the delivery of the implant-supported restoration.

Materials and Methods

Patients with a failing single tooth in the maxilla or mandible were recruited in two centres. After tooth extraction, patients were randomly assigned (1:1) to either EP or ARP/DP. At abutment connection and crown delivery, the buccal contour changes at 3 mm below the mucosal margin (primary outcome) along with clinician- (ease of treatment) and patient-reported outcomes were assessed using numeric rating scales and OHIP-14.

Results

A total of 46 patients were analysed. The mean buccal contour at abutment connection decreased by −1.2 ± 0.6 mm in group EP and −1.6 ± 0.8 mm in group ARP/DP (estimated mean difference; 0.45 [95%CI, −0.02; 0.94]; p = .061) with no significant differences between the groups. ARP/DP was consistently easier than EP across all stages of the surgery (estimated mean difference; 2.0 [95%CI, 1.3; 2.7] p < .001): during flap elevation (EP: 4.8 vs. ARP/DP: 1.6), implant placement (EP: 5.7 vs. ARP/DP: 2.2) and wound closure (EP: 3.4 vs. ARP/DP: 1.6). Both interventions improved quality of life but patients who underwent ARP/DP were significantly more satisfied at the time of crown delivery (ARP/DP: 9.6 vs. EP: 9.1, p = .02).

Conclusions

EP and ARP/DP show no significant differences in buccal contour changes, aesthetics and patient-reported outcomes. However, ARP/DP is an easier procedure at all stages of the surgery compared to EP and could therefore be the preferred therapy for less experienced clinicians.

目的比较早期种植体植入（EP）与牙槽嵴保留和延迟种植体植入（ARP/DP）在轮廓变化、临床医生和患者报告的结果测量（PROMs）方面的差异，直至提供种植体支持的修复体：在两个中心招募上颌或下颌单颗牙齿失败的患者。拔牙后，患者被随机分配（1:1）EP 或 ARP/DP。在基台连接和牙冠交付时，使用数字评分表和 OHIP-14 评估粘膜边缘下 3 毫米处的颊面轮廓变化（主要结果）以及临床医生（治疗难易程度）和患者报告的结果：结果：共对 46 名患者进行了分析。EP组患者基台连接处的平均颊面轮廓下降了-1.2 ± 0.6 mm，ARP/DP组患者基台连接处的平均颊面轮廓下降了-1.6 ± 0.8 mm（估计平均差异；0.45 [95%CI, -0.02; 0.94]; p = .061），组间无显著差异。在手术的所有阶段，ARP/DP 始终比 EP 更容易（估计平均差异；2.0 [95%CI, 1.3; 2.7] p 结论：EP 和 ARP/DP 在颊部轮廓变化、美学和患者报告结果方面没有明显差异。不过，与 EP 相比，ARP/DP 在手术的各个阶段都更容易操作，因此对于经验不足的临床医生来说，ARP/DP 可能是首选疗法。

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引用次数: 0

RETRACTION: Ultrastructural study by backscattered electron imaging and elemental microanalysis of biomaterial-to-bone interface and mineral degradation of bovine xenografts in maxillary sinus floor elevation 回放：通过反向散射电子成像和元素显微分析对上颌窦底隆起的生物材料与骨界面以及牛异种移植物的矿物质降解进行超微结构研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-02 DOI: 10.1111/clr.14305

M. P. Ramírez-Fernández, J. L. Calvo-Guirado, R. A. Delgado-Ruiz, J. E. Maté-Sánchez del Val, B. Negri, M. Peñarrocha Diago, “Ultrastructural study by backscattered electron imaging and elemental microanalysis of biomaterial-to-bone interface and mineral degradation of bovine xenografts in maxillary sinus floor elevation,” Clinical Oral Implants Research 24, no. 6 (2013): 645–651, https://doi.org/10.1111/j.1600-0501.2012.02439.x.

The above article, published online on 16 March 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Lisa J. A. Heitz-Mayfield; and John Wiley & Sons Ltd. The retraction has been agreed due to concerns raised by third parties on the data presented in the article. Several flaws and inconsistencies between results presented and experimental methods described were found. Specifically, instances of overlapping data within the article and with another publication authored by the same group have been found, despite the articles have different study designs. Accordingly, the editors consider the findings of this article unreliable and the conclusions to be invalid. The authors have been informed of the decision to retract the article. The corresponding author M. P. Ramírez-Fernández and co-author R. A. Delgado-Ruiz disagree with the decision of retraction. The remaining co-authors were not available for a final confirmation of the retraction.

P. Ramírez-Fernández, J. L. Calvo-Guirado, R. A. Delgado-Ruiz, J. E. Maté-Sánchez del Val, B. Negri, M. Peñarrocha Diago, "Ultrastructural study by backscattered electron imaging and elemental microanalysis of biomaterial-to-bone interface and mineral degradation of bovine xenografts in maxillary sinus floor elevation," Clinical Oral Implants Research 24, no：645-651, https://doi.org/10.1111/j.1600-0501.2012.02439.x。上述文章于 2012 年 3 月 16 日在线发表于 Wiley Online Library (wileyonlinelibrary.com)，经期刊主编 Lisa J. A. Heitz-Mayfield 和 John Wiley & Sons Ltd. 协议，该文章已被撤回。之所以同意撤稿，是因为第三方对文章中提供的数据提出了疑虑。我们发现文章中介绍的结果与实验方法之间存在若干缺陷和不一致之处。具体而言，尽管文章的研究设计不同，但发现文章中的数据与同一小组撰写的另一篇文章中的数据存在重叠。因此，编辑认为这篇文章的研究结果不可靠，结论无效。已将撤稿决定通知作者。通讯作者M. P. Ramírez-Fernández和合著者R. A. Delgado-Ruiz不同意撤稿决定。其余合著者无法最终确认撤稿决定。

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引用次数: 0

Long-term retention and survival of cemented implant-supported zirconia and metal-ceramic single crowns: A retrospective study 粘接种植体支撑的氧化锆和金属陶瓷单冠的长期固位和存活：回顾性研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-02 DOI: 10.1111/clr.14321

P. Rammelsberg, A. L. Klotz

Objectives

To evaluate the effect of different cement types on the incidence of failure and loss of retention of zirconia and metal-ceramic single crowns (SCs) cemented on implant abutments.

Methods

We placed 567 implant-supported SCs in 358 patients and retrospectively evaluated long-term retention for up to 12.8 years. The frameworks were made from metal alloy (n = 307) or zirconia (n = 260). SCs were cemented with permanent (glass-ionomer cement; n = 376) or semipermanent cement (zinc oxide non-eugenol cement; n = 191) on standardized (n = 446) or customized (n = 121) abutments. Kaplan–Meier curves were used to calculate the incidence of decementation. Differences between survival curves were assessed with log-rank tests. Cox-regression analysis was performed to evaluate multiple risk factors.

Results

Of the 567 SCs, 22 failed because of technical complications and four because of implant loss. Loss of retention was observed in 50 SCs. Analysis revealed a 7% probability of loss of retention for zirconia and 16% for metal-ceramic SCs after 10 years (p = .011). After 5 years, loss of retention was higher for standardized abutments than for customized abutments (p = .014). The probability of loss of retention was higher with semipermanent than with permanent cement (p = .001). Cox-regression analysis revealed semipermanent cement as the only significant risk factor for SC failure (p = .026).

Conclusions

In contrast to semipermanent cement, permanent cement provides acceptable long-term retention of cemented implant-supported SCs. These possible positive effects of customized abutments have to be controlled with larger sample sizes.

目的评估不同粘接剂类型对种植体基台上粘接氧化锆和金属陶瓷单冠（SC）失败率和固位丧失的影响：我们为 358 名患者植入了 567 个种植体支持的单冠，并对长达 12.8 年的长期固位情况进行了回顾性评估。骨架由金属合金（307 例）或氧化锆（260 例）制成。在标准化（n = 446）或定制（n = 121）基台上用永久性（玻璃离子水泥；n = 376）或半永久性（氧化锌非丁香酚水泥；n = 191）水泥粘结 SC。Kaplan-Meier 曲线用于计算脱落发生率。生存曲线之间的差异通过对数秩检验进行评估。Cox回归分析用于评估多种风险因素：在 567 例 SC 中，22 例因技术并发症而失败，4 例因种植体脱落而失败。有 50 个 SC 出现了固位丧失。分析表明，10年后氧化锆种植体丧失固位的概率为7%，金属陶瓷种植体丧失固位的概率为16%（p = .011）。5 年后，标准基台的固位丧失率高于定制基台（p = .014）。半永久性骨水泥的固位丧失概率高于永久性骨水泥（p = .001）。Cox回归分析显示，半永久性骨水泥是SC失败的唯一重要风险因素（p = .026）：结论：与半永久性骨水泥相比，永久性骨水泥可为骨水泥种植体支持的 SC 提供可接受的长期固位。定制基台可能带来的这些积极影响还需要更大的样本量来控制。

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引用次数: 0

One-stage prosthodontically driven jaw reconstruction in patients with benign and malignant pathologies: A 7- to 11-year cohort study 良性和恶性病变患者的单阶段义齿驱动颌骨重建：一项为期 7 至 11 年的队列研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-02 DOI: 10.1111/clr.14322

Vinay V. Kumar, Supriya Ebenezer, Sreelakshmi Viswanath, Andreas Thor

Objectives

One stage functional jaw reconstruction is defined as the resection and reconstruction of segmental defects in conjunction with the placement of dental implants in an ideal prosthetic position and loaded with a provisional restoration, during one surgical procedure. The aim of the study is to describe clinical outcomes of patients who underwent one stage functional jaw reconstruction.

Methods

Patients who underwent one-stage functional jaw reconstruction, from January 2013 to March 2016 were recalled in 2022 and 2023. Planning and execution for the reconstruction utilized either analogue or digital techniques. Outcome parameters recorded were treatment-related outcomes at patient level, implant-related outcomes and patient-reported outcome measures.

Results

Eighteen patients underwent one-stage jaw reconstruction with a total of 57 implants. Four patients had maxillary and 14 had mandibular reconstructions. Ten patients underwent postoperative radiotherapy. Ten patients were planned using analogue and eight by digital planning. Three patients had partial flap necrosis, three patients had plate fractures, implant loss was seen in one patient and four patients died during the period. A functional prosthesis was provided in 16 out of the 18 patients.

Conclusion

One-stage functional jaw reconstruction is a predictable method for providing rehabilitation with successful outcomes at 7–11 years. However, caution should be exercised when the treatment modality is carried out in patients with malignant pathologies who have undergone radiotherapy.

目的：一期功能性颌骨重建是指在一次手术过程中切除和重建部分缺损，同时在理想的修复位置植入牙科植入体，并加载临时修复体。本研究旨在描述接受一期功能性颌骨重建术患者的临床疗效：方法：对在 2013 年 1 月至 2016 年 3 月期间接受过一期功能性颌骨重建术的患者在 2022 年和 2023 年进行了召回。重建的规划和实施采用模拟或数字技术。记录的结果参数包括患者层面的治疗相关结果、种植体相关结果和患者报告的结果测量：18名患者接受了单阶段颌骨重建，共植入了57颗种植体。4名患者进行了上颌重建，14名患者进行了下颌重建。10名患者接受了术后放射治疗。10 名患者采用模拟规划，8 名患者采用数字规划。在此期间，3 名患者出现部分皮瓣坏死，3 名患者出现骨板骨折，1 名患者出现种植体脱落，4 名患者死亡。18名患者中有16人获得了功能性假体：结论：单阶段功能性颌骨重建是一种可预测的康复方法，可在 7-11 年内取得成功。结论：单阶段功能性颌骨重建是一种可预测的康复方法，可在7-11年后获得成功的结果。不过，对于接受过放射治疗的恶性病变患者，在采用这种治疗方法时应谨慎。

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引用次数: 0

RETRACTION: Ultrastructural study by backscattered electron imaging and elemental microanalysis of bone-to-biomaterial interface and mineral degradation of porcine xenografts used in maxillary sinus floor elevation 回放：通过反向散射电子成像和元素显微分析，对用于上颌窦底提升术的猪异种移植物的骨-生物材料界面和矿物质降解情况进行超微结构研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-02 DOI: 10.1111/clr.14304

M. P. Ramírez-Fernández, J. L. Calvo-Guirado, J. E. Maté-Sánchez del Val, R. A. Delgado-Ruiz, B. Negri, C. Barona-Dorado, “Ultrastructural study by backscattered electron imaging and elemental microanalysis of bone-to-biomaterial interface and mineral degradation of porcine xenografts used in maxillary sinus floor elevation,” Clinical Oral Implants Research 24, no. 5 (2013): 523–530, https://doi.org/10.1111/j.1600-0501.2011.02414.x.

The above article, published online on 26 January 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Lisa J. A. Heitz-Mayfield; and John Wiley & Sons Ltd. The retraction has been agreed due to concerns raised by third parties on the data presented in the article. Several flaws and inconsistencies between results presented and experimental methods described were found. Specifically, instances of overlapping data within the article and with another publication authored by the same group have been found, despite the articles have different study designs. Accordingly, the editors consider the findings of this article unreliable and the conclusions to be invalid. The authors have been informed of the decision to retract the article. The corresponding author M. P. Ramírez-Fernández and co-author R. A. Delgado-Ruiz disagree with the decision of retraction. The remaining co-authors were not available for a final confirmation of the retraction.

P. Ramírez-Fernández, J. L. Calvo-Guirado, J. E. Maté-Sánchez del Val, R. A. Delgado-Ruiz, B. Negri, C. Barona-Dorado, "Ultrastructural study by backscattered electron imaging and elemental microanalysis of bone-to-biomaterial interface and mineral degradation of porcine xenografts used in maxillary sinus floor elevation," Clinical Oral Implants Research 24, no.5 (2013):523-530, https://doi.org/10.1111/j.1600-0501.2011.02414.x。上述文章于 2012 年 1 月 26 日在线发表于 Wiley Online Library (wileyonlinelibrary.com)，经期刊主编 Lisa J. A. Heitz-Mayfield 和 John Wiley & Sons Ltd.（约翰-威利父子有限公司）协商，该文章已被撤回。之所以同意撤稿，是因为第三方对文章中提供的数据提出了疑虑。我们发现文章中介绍的结果与实验方法之间存在若干缺陷和不一致之处。具体而言，尽管文章的研究设计不同，但发现文章中的数据与同一小组撰写的另一篇文章中的数据存在重叠。因此，编辑认为这篇文章的研究结果不可靠，结论无效。已将撤稿决定通知作者。通讯作者M. P. Ramírez-Fernández和合著者R. A. Delgado-Ruiz不同意撤稿决定。其余合著者无法最终确认撤稿决定。

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引用次数: 0

Does an untreated peri-implant dehiscence defect affect the progression of peri-implantitis?: A preclinical in vivo experimental study 未经处理的种植体周围开裂缺陷会影响种植体周围炎的发展吗？临床前体内实验研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-07-01 DOI: 10.1111/clr.14324

Young Woo Song, Jin-Young Park, Ji-Yeong Na, Yoon-Hee Kwon, Jae-Kook Cha, Ui-Won Jung, Daniel S. Thoma, Ronald E. Jung

Objective

To investigate the early impact of plaque accumulation in a buccal dehiscence defect on peri-implant marginal bone resorption.

Materials and Methods

In six male Mongrel dogs, four dental implants were placed in the posterior maxilla on both sides (two implants per side). Based on the group allocation, each implant was randomly assigned to one of the following four groups to decide whether buccal dehiscence defect was prepared and whether silk ligation was applied at 8 weeks post-implant placement for peri-implantitis induction: UC (no defect without ligation); UD (defect without ligation); LC (no defect with ligation); and LD (defect with ligation) groups. Eight weeks after disease induction, the outcomes from radiographic and histologic analyses were statistically analyzed (p < .05).

Results

Based on radiographs, the exposed area of implant threads was smallest in group UC (p < .0083). Based on histology, both the distances from the implant platform to the first bone-to-implant contact point and to the bone crest were significantly longer in the LD group (p < .0083). In the UD group, some spontaneous bone fill occurred from the base of the defect at 8 weeks after implant placement. The apical extension of inflammatory cell infiltrate was significantly more prominent in the LD and LC groups compared to the UC group (p < .0083).

Conclusion

Plaque accumulated on the exposed implant surface had a negative impact on maintaining the peri-implant marginal bone level, especially when there was a dehiscence defect around the implant.

目的研究颊部开裂缺损中的菌斑积累对种植体周围边缘骨吸收的早期影响：在六只雄性蒙古犬的后上颌骨两侧植入四颗种植体（每侧两颗）。根据组别分配，每颗种植体被随机分配到以下四组中的一组，以决定是否准备颊部开裂缺损，以及是否在种植体植入后 8 周进行丝线结扎以诱导种植体周围炎：UC（无缺损不结扎）组；UD（缺损不结扎）组；LC（缺损不结扎）组；LD（缺损结扎）组。疾病诱导八周后，对放射学和组织学分析结果进行统计分析（P 结果：根据 X 光片，UC 组的种植体螺纹暴露面积最小（p 结论：UC 组的种植体螺纹暴露面积最小：种植体暴露面上积累的牙菌斑对维持种植体周围边缘骨水平有负面影响，尤其是当种植体周围有开裂缺损时。

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引用次数: 0

Single-piece zirconia versus single-piece titanium, narrow-diameter dental implants in the anterior maxilla: 5-year post-loading results of a randomized clinical trial 上颌骨前部单片氧化锆与单片钛、窄直径牙科植入物的对比：随机临床试验的 5 年后装载结果

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-06-28 DOI: 10.1111/clr.14319

Paula Andrea Ruiz Henao, Gabriel Leonardo Magrin, Leticia Caneiro-Queija, Cesar Augusto Magalhães Benfatti, Yago Leira, Antonio Liñares-González, Juan Blanco-Carrión

Objectives

The aim of this study was to evaluate esthetic parameters in the anterior maxillary region by comparing single-piece zirconia versus titanium narrow-diameter implants. Additionally, clinical, radiological and patient-reported outcome measures (PROMs) were analyzed.

Materials and Methods

Thirty implants (tissue level implant) were placed in 30 patients in the maxillary esthetic sector. Depending on randomization, a zirconia (test) or titanium implant (control) was placed. Esthetic, clinical, and radiological parameters, including the implant crown esthetic index (ICAI), pink esthetic score (PES), probing pocket depth, bleeding on probing, plaque index, and marginal bone levels, were evaluated at 12, 36 and 60 months after loading.

Results

Sixty months after crown placement, no significant differences were found between groups. The ICAI values were 5.25 ± 4.21 and 4.50 ± 2.98 for the test and control groups, respectively. The corresponding PES values were 7.44 ± 1.93 and 7.43 ± 1.74 for the test and control groups, respectively. There were no significant intergroup differences for the rest of the parameters evaluated.

Conclusion

It can be suggested that monotype zirconia implants may serve as a potential alternative to titanium implants in selected clinical scenarios. While the results demonstrated comparable esthetic, clinical, and radiological aspects for zirconia implants as compared to titanium implants after a 5-year follow-up period, further research with larger sample sizes and longer-term follow-up is recommended.

本研究旨在通过比较单片氧化锆与钛窄径种植体，评估上颌前牙区的美学参数。此外，还对临床、放射学和患者报告的结果指标（PROMs）进行了分析。材料和方法在 30 名患者的上颌美学区域植入了 30 个种植体（组织水平种植体）。根据随机分配，植入了氧化锆（试验）或钛种植体（对照）。在植入后的 12 个月、36 个月和 60 个月对美学、临床和放射学参数进行评估，包括植入冠美学指数（ICAI）、粉色美学评分（PES）、探诊袋深度、探诊出血量、牙菌斑指数和边缘骨水平。试验组和对照组的 ICAI 值分别为 5.25 ± 4.21 和 4.50 ± 2.98。测试组和对照组的相应 PES 值分别为 7.44 ± 1.93 和 7.43 ± 1.74。结论可以认为，在特定的临床情况下，单型氧化锆种植体可以作为钛种植体的潜在替代品。虽然 5 年的随访结果表明氧化锆种植体与钛种植体在美学、临床和放射学方面具有可比性，但仍建议进行样本量更大、随访时间更长的进一步研究。

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引用次数: 0

Effects of hard- and/or soft-tissue grafting with early implant placement: Histomorphometric outcomes of an exploratory study in canines 早期植入种植体的硬组织和/或软组织移植效果：犬科探索性研究的组织形态计量结果

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-06-21 DOI: 10.1111/clr.14320

Hyun-Chang Lim, Kwang-Seok Lee, Ronald E. Jung, Nadja Naenni, Ui-Won Jung, Daniel S. Thoma

Objective

To histomorphometrically determine the effects of hard- and/or soft-tissue augmentation by applying the early implant placement protocol.

Materials and Methods

The distal roots of the maxillary second and third premolars were extracted in 10 mongrel dogs. After 1 month, early implant placement was performed in the distal roots, resulting in buccal dehiscence defects. Four treatments were then randomly applied: (1) guided bone regeneration (GBR), (2) connective tissue grafting (CTG), (3) simultaneous GBR and CTG (GBR + CTG) and (4) no further treatment (control). Healing abutments were connected to all implants to allow non-submerged healing. At 4 and 16 weeks, tissue sections were harvested and histomorphometric analyses were performed.

Results

Group GBR presented the largest total tissue thickness at 4 weeks, but underwent a greater remodelling compared with the other groups between 4 and 16 weeks. At 16 weeks, the overall tissue thickness was largest in group GBR + CTG. This group was also the most favourable in terms of the level of the margo mucosae and the presence of mineralized tissue at the coronal level. Group CTG demonstrated a stable tissue thickness over time, with a larger thickness at 16 weeks compared with group GBR.

Conclusion

Simultaneous CTG and GBR resulted in the most-favourable tissue thickness when applying the early implant placement protocol.

材料与方法拔除 10 只杂种狗的上颌第二和第三前臼齿远端牙根。1 个月后，对远端牙根进行早期种植，造成颊开裂缺损。然后随机采用四种治疗方法：(1) 引导骨再生（GBR）；(2) 结缔组织移植（CTG）；(3) 同时进行 GBR 和 CTG（GBR + CTG）；(4) 不再进行治疗（对照组）。所有种植体都连接了愈合基台，以实现非浸没式愈合。结果 GBR 组在 4 周时的组织总厚度最大，但在 4 至 16 周期间与其他组相比，重塑程度更大。16 周时，GBR + CTG 组的总组织厚度最大。就粘膜水平和冠状水平矿化组织的存在而言，该组也是最有利的。结论在应用早期种植体植入方案时，同时使用 CTG 和 GBR 可获得最理想的组织厚度。

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引用次数: 0

Comparative in vitro evaluation of microgap in titanium stock versus cobalt–chrome custom abutments on a conical connection implant: Effect of crown cementation and ceramic veneering 锥形连接种植体上钛库存基台与钴铬定制基台微间隙的体外比较评估：牙冠粘结和陶瓷贴面的影响。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-06-17 DOI: 10.1111/clr.14317

Federico Herrero-Climent, Francisco Martínez-Rus, María Paz Salido, David Roldán, Guillermo Pradíes

Objective

To compare the implant–abutment connection microgap between computer-aided design and computer-aided manufacturing (CAD/CAM) milled or laser-sintered cobalt–chrome custom abutments with or without ceramic veneering and titanium stock abutments with or without crown cementation.

Material and Methods

Six groups of six abutments each were prepared: (1) CAD/CAM cobalt–chrome custom abutments: milled, milled with ceramic veneering, laser-sintered, and laser-sintered with ceramic veneering (four groups: MIL, MIL-C, SIN, and SIN-C, respectively) and (2) titanium stock abutments with or without zirconia crown cementation (two groups: STK and STK-Z, respectively). Abutments were screwed to the implants by applying 30 Ncm torque. All 36 samples were sectioned along their long axes. The implant–abutment connection microgap was measured using scanning electron microscopy on the right and left sides of the connection at the upper, middle, and lower levels. Data were analyzed using the Kruskal–Wallis test (p < .05).

Results

Mean values (μm) of the microgap were 0.54 ± 0.44 (STK), 0.55 ± 0.48 (STK-Z), 1.53 ± 1.30 (MIL), 2.30 ± 2.2 (MIL-C), 1.53 ± 1.37 (SIN), and 1.87 ± 1.8 (SIN-C). Although significant differences were observed between the STK and STK-Z groups and the other groups (p < .05), none were observed between the milled and laser-sintered groups before or after ceramic veneering. The largest microgap was observed at the upper level in all groups.

Conclusions

Titanium stock abutments provided a closer fit than cobalt–chrome custom abutments. Neither crown cementation nor ceramic veneering resulted in significant changes in the implant–abutment connection microgap.

目的比较计算机辅助设计和计算机辅助制造（CAD/CAM）铣制或激光烧结钴铬合金定制基台（带或不带陶瓷贴面）与钛合金基台（带或不带牙冠粘结）之间的种植体-基台连接微间隙：制备了六组基台，每组六个：(1) CAD/CAM 钴铬合金定制基台：铣削、铣削后陶瓷贴面、激光烧结和激光烧结后陶瓷贴面（四组：分别为 MIL、MIL-C、SIN 和 SIN-C）；(2) 粘接或不粘接氧化锆冠的钛库存基台（两组：分别为 STK 和 STK-Z）。基台以 30 Ncm 的扭力拧紧到种植体上。对所有 36 个样本沿长轴进行切片。使用扫描电子显微镜测量了种植体与基台连接处左右两侧上、中、下的微间隙。数据分析采用 Kruskal-Wallis 检验（P 结果：微间隙的平均值（μm）分别为 0.54 ± 0.44（STK）、0.55 ± 0.48（STK-Z）、1.53 ± 1.30（MIL）、2.30 ± 2.2（MIL-C）、1.53 ± 1.37（SIN）和 1.87 ± 1.8（SIN-C）。虽然 STK 和 STK-Z 组与其他组之间存在明显差异（p 结论：STK 和 STK-Z 组的钛基底可提供更好的修复效果：钛基台比钴铬合金定制基台更密合。牙冠粘结和陶瓷贴面都不会导致种植体与基台连接微间隙的显著变化。

{"title":"Comparative in vitro evaluation of microgap in titanium stock versus cobalt–chrome custom abutments on a conical connection implant: Effect of crown cementation and ceramic veneering","authors":"Federico Herrero-Climent, Francisco Martínez-Rus, María Paz Salido, David Roldán, Guillermo Pradíes","doi":"10.1111/clr.14317","DOIUrl":"10.1111/clr.14317","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>To compare the implant–abutment connection microgap between computer-aided design and computer-aided manufacturing (CAD/CAM) milled or laser-sintered cobalt–chrome custom abutments with or without ceramic veneering and titanium stock abutments with or without crown cementation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>Six groups of six abutments each were prepared: (1) CAD/CAM cobalt–chrome custom abutments: milled, milled with ceramic veneering, laser-sintered, and laser-sintered with ceramic veneering (four groups: MIL, MIL-C, SIN, and SIN-C, respectively) and (2) titanium stock abutments with or without zirconia crown cementation (two groups: STK and STK-Z, respectively). Abutments were screwed to the implants by applying 30 Ncm torque. All 36 samples were sectioned along their long axes. The implant–abutment connection microgap was measured using scanning electron microscopy on the right and left sides of the connection at the upper, middle, and lower levels. Data were analyzed using the Kruskal–Wallis test (<i>p</i> < .05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Mean values (μm) of the microgap were 0.54 ± 0.44 (STK), 0.55 ± 0.48 (STK-Z), 1.53 ± 1.30 (MIL), 2.30 ± 2.2 (MIL-C), 1.53 ± 1.37 (SIN), and 1.87 ± 1.8 (SIN-C). Although significant differences were observed between the STK and STK-Z groups and the other groups (<i>p</i> < .05), none were observed between the milled and laser-sintered groups before or after ceramic veneering. The largest microgap was observed at the upper level in all groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Titanium stock abutments provided a closer fit than cobalt–chrome custom abutments. Neither crown cementation nor ceramic veneering resulted in significant changes in the implant–abutment connection microgap.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"35 10","pages":"1286-1298"},"PeriodicalIF":4.8,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141330531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional changes and influencing factors of tent space following osteotome sinus floor elevation without grafting: A 48-month retrospective radiographic study 截骨窦底提升术后帐篷空间的三维变化和影响因素：一项为期 48 个月的回顾性放射学研究。

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research

Pub Date : 2024-06-14 DOI: 10.1111/clr.14312

Wen Zhang, Haida Chen, Ke Zhao, Xinhua Gu

Objectives

To analyze the three-dimensional stability and morphologic changes of tent space after the osteotome sinus floor elevation (OSFE) procedures without bone grafts.

Materials and Methods

Forty-six implants placed using the OSFE technique with simultaneous implant placement without bone grafts were included in this retrospective study. Cone-beam computed tomography (CBCT) scans of the augmented sinuses were obtained pre- and postoperatively up to 48 months of follow-up. The maxillary sinus cavity profiles were outlined using three-dimensional virtual reconstruction and superimposition of CBCT scans. The three-dimensional changes in the tent space were measured. A generalized estimating equation (GEE) was used to explore potential factors.

Results

The implant survival rate was 97.8%. The mean volume of remaining tent space immediately after surgery was 96.8 ± 70.5 mm³, shrinking to 31.0 ± 24.9 mm³ after 48 months, while the mean percentage of remaining tent space volume decreased to 29.1 ± 20.7%. The tent space volume and the percentage of residual tent space volume only decreased significantly within 12 months after surgery (p = .008, .013). GEE results indicated positive correlations between the percentage of remaining tent space volume and implant protrusion length (p = .000) and apical height (p = .000), with a negative correlation between the sinus floor area immediately after surgery (p = .002) and the healing time (p = .022).

Conclusions

The volume of the tent space rapidly shrank after OSFE without bone grafts. Several factors might influence the tent space stability. Long-term clinical trials with larger sample sizes are necessary to further validate the results.

目的分析不植骨的骨刀窦底提升（OSFE）术后帐篷空间的三维稳定性和形态变化：这项回顾性研究共纳入了 46 个使用 OSFE 技术植入的种植体，同时植入种植体时未进行植骨。在术前和术后48个月的随访中，对植入的上颌窦进行了锥形束计算机断层扫描（CBCT）。通过三维虚拟重建和 CBCT 扫描的叠加，勾勒出上颌窦腔的轮廓。测量了蝶窦空间的三维变化。采用广义估计方程（GEE）来探讨潜在因素：种植体存活率为 97.8%。术后剩余帐幕空间的平均体积为 96.8 ± 70.5 mm3，48 个月后缩小至 31.0 ± 24.9 mm3，剩余帐幕空间体积的平均百分比降至 29.1 ± 20.7%。帐篷间隙体积和剩余帐篷间隙体积百分比仅在术后 12 个月内显著下降（p = .008, .013）。GEE 结果表明，剩余帐幕空间体积百分比与种植体突出长度（p = .000）和根尖高度（p = .000）呈正相关，与术后即刻的窦底面积（p = .002）和愈合时间（p = .022）呈负相关：结论：在不植骨的情况下，OSFE术后窦腔体积迅速缩小。有几个因素可能会影响帐篷间隙的稳定性。为了进一步验证结果，有必要进行样本量更大的长期临床试验。

{"title":"Three-dimensional changes and influencing factors of tent space following osteotome sinus floor elevation without grafting: A 48-month retrospective radiographic study","authors":"Wen Zhang, Haida Chen, Ke Zhao, Xinhua Gu","doi":"10.1111/clr.14312","DOIUrl":"10.1111/clr.14312","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>To analyze the three-dimensional stability and morphologic changes of tent space after the osteotome sinus floor elevation (OSFE) procedures without bone grafts.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Forty-six implants placed using the OSFE technique with simultaneous implant placement without bone grafts were included in this retrospective study. Cone-beam computed tomography (CBCT) scans of the augmented sinuses were obtained pre- and postoperatively up to 48 months of follow-up. The maxillary sinus cavity profiles were outlined using three-dimensional virtual reconstruction and superimposition of CBCT scans. The three-dimensional changes in the tent space were measured. A generalized estimating equation (GEE) was used to explore potential factors.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The implant survival rate was 97.8%. The mean volume of remaining tent space immediately after surgery was 96.8 ± 70.5 mm<sup>3</sup>, shrinking to 31.0 ± 24.9 mm<sup>3</sup> after 48 months, while the mean percentage of remaining tent space volume decreased to 29.1 ± 20.7%. The tent space volume and the percentage of residual tent space volume only decreased significantly within 12 months after surgery (<i>p</i> = .008, .013). GEE results indicated positive correlations between the percentage of remaining tent space volume and implant protrusion length (<i>p</i> = .000) and apical height (<i>p</i> = .000), with a negative correlation between the sinus floor area immediately after surgery (<i>p</i> = .002) and the healing time (<i>p</i> = .022).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The volume of the tent space rapidly shrank after OSFE without bone grafts. Several factors might influence the tent space stability. Long-term clinical trials with larger sample sizes are necessary to further validate the results.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"35 10","pages":"1251-1261"},"PeriodicalIF":4.8,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141316896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0