Biomechanical aspects: Summary and consensus statements of group 4. The 5^th EAO Consensus Conference 2018

Abstract

Objectives:The aim of the present publication was to report on the EAO Workshop group-4 discussions and consensus statements on the five reviews previously prepared. These reviews provided the scientific evidence on the effect of crown-to-implant ratio, on reconstructions with cantilevers in fully and partially edentulous patients, on biological and technical complications of tilted in comparison with straight implants, and on the effects of osseointegrated implants functioning in a residual dentition. Material and Methods:The group discussed, evaluated, corrected where deemed appropriate, and made recommendations to the authors regarding the following five reviews submitted: (a) Is there an effect of crown-to-implant ratio on implant treatment outcomes?; (b) Implant-supported cantilevered fixed dental rehabilitations in fully edentulous patients; (c) and in partially edentulous patients; (d) Biological and technical complications of tilted implants in comparison with straight implants supporting fixed dental prostheses; (e) What are the adverse effects of osseointegrated implants functioning among natural teeth of a residual dentition? Based on the five manuscripts and the discussion among the group as well as the plenum members, the major findings were summarized, consensus statements were formulated, clinical recommendations were proposed, and areas of future research were identified.Results: Crown-to-implant ratios ranging from 0.9 to 2.2 did not influence the occurrence of biological or technical complications also in single-tooth restorations.Reconstructions with cantilevers for the rehabilitation of fully and partially edentulous jaws showed high implant and reconstruction survival rates. In contrast, the rate of complications-in particular associated with veneering material-was high during the observation period of 5-10 years. The data reported were primarily derived from studies with high risk of bias. The data for single-implant reconstructions were small. There was no evidence that distally tilted implants were associated with higher failure rates and increased amounts of marginal bone loss. The data supporting these findings, This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Prevalence of peri‐implant diseases among an Italian population of patients with metabolic syndrome: A cross‐sectional study

“…The European population is getting older, with an increasing concern about oral health: according to Schimmel et al., implant‐prosthetic rehabilitation has become routine practice in elderly patients, with well‐documented long‐term survival rates (>10 years) . Nevertheless, coexisting systemic risk factors should carefully be taken into account by clinicians and implant success could be affected by either mechanical or biological complications . According to the 2017 World Workshop on the Classification of Periodontal and Peri‐Implant Diseases and Conditions, plaque‐related inflammatory conditions can be classified as peri‐implantitis and peri‐implant mucositis: its prevalence is still controversial, and, according to a recent systematic review, around 42% of dental implants are affected by mucositis, while a diagnosis of peri‐implantitis could be established in 23% …”

Dental implants placed buccally to the mandibular canal in molar regions with severe vertical bone loss: case reports

“…14 Furthermore, the performance of the ultra-short implants has not been tested with severe BL and increased interocclusal space. 15 Incidentally, implants of 4 and 6 mm in length are not available in the narrow version and this therefore precludes their use in thin bony crests. In contrast to previous studies cited, short implants failed more than longer implants due to their reduced anchorage and lower load-bearing capacity.…”

“…The 5th EAO Consensus Conference 2018 states that the use of singletooth restorations with crown to implant ratio between 0.9 and 2.2 is not expected to increase BL or failure rates and therefore it is a viable treatment option. 15 Due to the limited amount of bone buccally to MC and to preserve IAN integrity, the use of small diameter implants (SDI) is almost always recommended. All the implants inserted in this case report had a 3.3mm diameter, exactly the same diameter as all 135 implants installed lateral to the MC in the retrospective study, mentioned previously.…”

“…20 Finally, it is worth emphasizing that this technique may be a simple option to reconstruct the posterior teeth in severe atrophic mandibles such as Kennedy class 1 cases and then carry out the maintenance of the anterior teeth in the mouth instead of extracting them to install a Branemark protocol. 15 The preservation of natural teeth with their mechanoreceptors in the periodontal ligament constitutes a protective factor for the maintenance of healthy implants over the years as well as for better control of the occlusal overload on periimplant tissue. Prospective randomized long-term studies Dental implants placed in molar regions Chavarry should be performed aimed at comparing the implants placed buccally to the mandibular canal with implants placed above the IAN after bone augmentation procedures.…”

Peri̇odontal Hastalik Geçmi̇şi̇ Olan Hastalarda Ve Peri̇odontal Olarak Sağlikli Bi̇reylerde Yapilan İmplantlarin 29 Aylik Geri̇ye Dönük Kli̇ni̇k Başarilarinin Değerlendi̇ri̇lmesi̇

“…Literatürde implantların uzun dönem takibi ile ilgili yapılan çalışmalarda yaş ve cinsiyetin marjinal kemik kaybına etkisi üzerine çelişkili raporlar bulunmaktadır. 46 Bu açıdan her iki parametreninde uzun dönem takiplerde değerlendirilmesi gerekmektedir.…”