Abutment Selection for Anterior Implant-Supported Restorations

Abstract

With the introduction of dental implants to the market, varying restorative options have been successfully added for restoring the function and esthetics of both completely and partially edentulous patients. Accurate prosthodontic rehabilitation is the key factor for providing the long-term success and the survival of osseointegrated implants. Implantsupported restorations can be fabricated with different techniques. The prefabricated abutments provided by the implant companies are accepted as the gold standard because of their biocompatibility and advanced mechanical properties. However, especially for the anterior restorations, they are increasingly being replaced by custom abutments ideally prepared with CAD/CAM techniques; due to disadvantages of prefabricated abutments such as esthetic flaws, mechanical insufficiency resulting from implant placement, unacceptable emergence profile, and unhygienic regions formed under angled abutments. Currently, custom abutments are reported to have functional and esthetic advantages over prefabricated abutments. In this chapter, indications for proper abutment selection, contemporary production techniques, and different abutment materials will be stated, and the current research on the subject will be discussed.

Implant-abutment screw removal torque values between customized titanium abutment, straight titanium abutment, and hybrid zirconia abutment after a million cyclic loading: an in vitro comparative study

“…A zirconia framework is made up over a titanium neck. This system is called a "hybrid zirconia abutment" or "ti-base abutment" [19].…”

The overall esthetic assessment of anterior single-tooth implant restoration using esthetic sustainable criteria in 5-year clinical cross-sectional study

“…Although, the number of each abutment groups were not equal and too small. Labial bone thickness and height showed a tendency to decrease in some abutments from 0-2 years to 5 years (table 12,13). Similar to previous studies, Degidi and colleagues (30) also reported 29% and 26% of initial bone width and height was resorbed horizontally and vertically after 1 year recall of immediate implant placement.…”

“…Titanium has been used as implant abutment for decades due to its strength and biocompatibility to soft tissue. It is considered as a gold standard abutment because of high success rate and its properties (12,13). However, titanium abutment in anterior region possibly showed greyish color of soft tissue around implant and effect to esthetic outcome (14).…”

“…Lastly, there were no reference radiographic images at 0-2 years to compare the amount of bone change from the start after loading in every cases. So, each abutment group had an insufficient and unequal sample size (table 12,13). A prospective study or randomised control trial with larger sample size was recommended for further studies.…”

Shear Bond Strength of Lithium Disilicate Bonded with Various Surface-Treated Titanium

“…In recent years, dental implants have been the treatment of choice for replacing a single missing tooth, especially in the aesthetic zone, owing to its high clinical success [ 1 – 3 ]. Historically, there have been several different types of dental implant abutments used in the aesthetic zone, such as metal-colored implant abutments, tooth-colored implant abutments, and two-piece or hybrid abutments [ 4 ]. Regarding the material, titanium is commonly used as a dental implant abutment [ 1 ].…”