Effects of Repeated Screw Tightening on Implant Abutment Interfaces in Terms of Bacterial and Yeast Leakage in Vitro: One-Time Abutment Versus the Multiscrewing Technique

Abstract

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Metals Used in Maxillofacial Surgery

“…For these reasons, and to overcome the defects of the other metals previously used, titanium has become the standard gold for reconstruction of the maxillofacial skeleton (22). Titanium has been used successfully as an implant material and this success with titanium implants (23)(24)(25)(26)(27)) is credited to its excellent biocompatibility due to the formation of stable oxide layer on its surface (28,29). The commercially pure titanium is classified into 4 grades which differ in their oxygen content.…”

Effects of the Application of High-Pressure Oxygen on the Treatment of Periodontal Disease in Diabetic Patients

“…It is well known that diabetes considerably complicates wound healing. This is due both to peripheral vasculopathy, which induces local hypoxia with a decrease in metabolites to cells, and to a decrease in the influx and reactivity of leukocytes and consequent increase in the likelihood of infections (6)(7)(8)(9)(10)(11)(12)(13)(14).…”

3d X-Ray Microscopic Analysys on a Prosthetically Loaded Implant With Platform-Switching and Conical Connection: A Case Report

“…Marginal bone loss around dental implants is related to several factors: the establishment of a pathogenic microflora, promoting the occurrence of peri-implant diseases with a chronic mucosal inflammation, the increasing pocket depth and progressive bone resorption, as well as the role of biomechanical stress due to incorrect occlusal design (2)(3)(4)(5). Several studies focused the attention about the role of the implant-abutment connection design that may contribute to allow stability of the peri- (6,7). The Morse taper conical internal connection had shown better results in terms of prevention of microbial penetration, sealing performance and implant stability (8)(9)(10).…”

“…One of the most important innovation was the introduction of the platform switching, that has determined important benefit in term of biomechanical behavior, influence upon bone crestal level, and soft tissue response (11,12). Currently, evaluation of those treatments in which abutments of lesser diameter were used revealed better preservation of the hard and soft tissues than treatment that use abutments with diameters matched to the implant (7,13). So far, the histological and histomorphometrical examination were the gold standard in the qualitative and quantitative analyses of the peri-implant tissue around the implant, even if the nature of specimens which consist of both, metal implant and soft/hard tissues poses difficulties in preparing the specimens for the analyses.…”