Technical complications of implant-causes and management: A comprehensive review

Abstract

Given the increasing popularity of dental implants, the number of failures due to late implant fracture is also expected to increase. Hence, the scope for prevention and management needs to be emphasized. The objective of this review article is to analyze the various causes of failure of dental implants due to implant fixture/abutment screw fractures and also to enumerate the management and the preventive options for these failures, thereby aiming to help the clinicians to properly plan the implant-supported prosthesis treatment by considering the important biomechanical aspects of this type of rehabilitation. The present review emphasizes the causes and management of technical complications and not the incidence of such complications.

Contact analysis of gap formation at dental implant‐abutment interface under oblique loading: A numerical‐experimental study

“…This indicates that peri-implant diseases may be related to the invasion and colonization of implants by these bacteria. 8 An unstable implant-abutment connection can also cause mechanical complications such as screw loosening, which is often seen in implant-supported single crowns. 7 Evidence has shown that fabrication tolerance, connection design, abutment material, and insertional torque can all affect the stability and integrity of the implant-abutment interface.…”

A novel technique to retrieve cold‐welded implant abutment: A case series

“…The implant‐abutment interface connection can be internal connection or external connection. The internal connection has a much more important role in the stability of abutments and force distribution compared with the external connection …”

“…Screw tightening produces tension in the screw, which causes elastic recovery and pulls the abutment and implant toward each other, creating a clamping force. Applying an adequate preload has some advantages such as lower micromotion of implant‐abutment screw interface, less frequency of screw loosening, improvement of fatigue resistance, and the locking of implant‐abutment connection …”

“…The internal connection has a much more important role in the stability of abutments and force distribution compared with the external connection. 14 A screw joint between the implant and abutment is tightened by applying a torque to the screw abutment. The force F I G U R E 1 A, B and C; Broken implant abutments observable on radiographs (A) (B) (C) generated within the screw by applying torque is known as the preload.…”

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

“…The late implant failure has been reported after the prosthetic treatment and constitutes one of the major causes of implant loss after the osseointegration process (Derks et al 2015;Gupta et al 2015). It is mainly related to the implant-abutment misfit as a result of the abutment screws loosening.…”