Effect of double conical abutment screw on implant preload

Arnetzl, G; Payer, Michael; Falkensammer, Frank

doi:10.1111/clr.12623

Cited by 14 publications

(9 citation statements)

References 25 publications

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“…Our results showed that assemblies attached with conical-head abutment screws harbored lower counts of microorganisms than those attached with conventional-head screws. Also corroborating with these findings, Arnetzl et al (2015) showed that the geometry of the abutment screw head significantly influenced loosening torque in internal connections. According to the authors, double or conventional conical-head screws showed higher loosening torque values than conventional flat-head screws before and after loading simulation.…”

Section: Discussionsupporting

confidence: 82%

Experimental conical‐head abutment screws on the microbial leakage through the implant‐abutment interface: an in vitro analysis using target‐specific DNA probes

Pita

Nascimento

Santos

et al. 2016

Clinical Oral Implants Res

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Section: Discussionsupporting

confidence: 82%

Experimental conical‐head abutment screws on the microbial leakage through the implant‐abutment interface: an in vitro analysis using target‐specific DNA probes

Pita

Nascimento

Santos

et al. 2016

Clinical Oral Implants Res

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“…The second study concluded that loss of torque value was significantly higher with the conical head than with the flat head. [ 31 32 ]…”

Section: Factors Affecting Abutment Screw Looseningmentioning

confidence: 99%

Abutment screw loosening in implants: A literature review

Alsubaiy

2020

J Family Med Prim Care

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This review was intended on major factors contributing to abutment screw loosening. A search of Pubmed and Google Scholar, as well as a manual search, was conducted. Publications and articles accepted for publication up to February 2020 were included. Out of 150 studies retrieved, a total of 57 were selected for this review. Dental implants are associated with a complexity of abutment screw loosening. Implantologists and prosthodontists should be aware of factors that contribute to this problem. In this review previously identified factors were collected, the consideration of which can help to reduce the frequency of abutment screw loosening.

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“…In consequence, the use of osseointegrated dental implants became a common practice in oral rehabilitation, being confirmed by the high efficiency in the restoration of single, partial, or complete edentulous arches 4,5 . Nevertheless, in spite of the success of osseointegrated implants, problems both mechanical and biological, such as loosening of the abutment screw and bacterial microleakage have been documented [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Morse taper implant macrodesign, loading protocol and site of installation – retrospective study of 5,601 implants

Mello-Machado

Thomé

Bernardes

et al. 2019

Rev. odontol. UNESP

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Introduction The long-term implant-supported prosthetic rehabilitation monitoring is extremely important in evaluating parameters that could interfere in the success of the treatment. Objective To evaluate the influence of macrodesign (shape of the body and apex), length and diameter, insertion torque, site of installation as well as the loading protocol, on long-term survival rates. Material and method The data obtained was from the medical records of rehabilitated patients who had had at least one Morse taper implant surgery done at ILAPEO School between 2006 -2012. Incomplete medical records, from which it would have been impossible to extract all data essential to complete the study, were excluded. Result A total of 1,142 patient’s medical records comprised the sample; documenting the progress of 5,601 implants, done in both jaws and mandibles. The final survival rate was 98.31%, over an average time of 37.54 months. The type of implant most used was cylindrical (70.33%). The mean installation torque most evidenced in the study was between 41 and 50 Ncm. A logistical regression analysis showed that none of the following variables, site of installation, body and apex shape designs and length, had any significant statistical influence on implant loss. Torque increase and diameter influenced implant loss while immediate loading favored implant maintenance. Conclusion It can be concluded that Morse taper implants present a long-term survival rate that can be lowered by excessive torque, as well as by the diameter of the implant.

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Effect of double conical abutment screw on implant preload

Cited by 14 publications

References 25 publications

Experimental conical‐head abutment screws on the microbial leakage through the implant‐abutment interface: an in vitro analysis using target‐specific DNA probes

Experimental conical‐head abutment screws on the microbial leakage through the implant‐abutment interface: an in vitro analysis using target‐specific DNA probes

Abutment screw loosening in implants: A literature review

Morse taper implant macrodesign, loading protocol and site of installation – retrospective study of 5,601 implants

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