BACKGROUND Single-tooth replacement often requires a prefabricated dental implant and a customized crown. The benefits of individualization of the abutment remain unclear. PURPOSE This randomized controlled clinical trial aims to study potential benefits of individualization of zirconia implant abutments with respect to preservation of marginal bone level and several clinical and patient-base...

Background: Single-tooth replacement often requires a prefabricated dental implant and a customized crown. The benefits of individualization of the abutment remain unclear. Purpose: This randomized controlled clinical trial aims to study potential benefits of individualization of zirconia implant abutments with respect to preservation of marginal bone level and several clinical and patient-base...

PURPOSE The riegel and swing-lock attachments are excellent retainers in terms of secure retention, but the former requires a great volume of abutment tooth reduction and the latter has problems with aesthetics and abrasion. In contrast, the RPI and RPA clasps have been highly appreciated as excellent retainers for abutment tooth protection, but any retentive forces are needed. Thus, the purpos...

OBJECTIVE To assess the performance of short nanorough implants (8.5 mm in length) provided with either a platform-matched or a platform-switched implant-abutment connection, placed in the resorbed posterior region of partially dentate patients. MATERIALS AND METHODS A total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with e...

HUA LI. Countermeasures against Scour at Bridge Abutments (Under the direction of Dr. BRIAN D. BARKDOLL) Scour at bridge abutments can cause damage or failure of bridges and result in excessive repairs, loss of accessibility, or even death. To mitigate abutment scour, both clear-water and live-bed laboratory experiments in a compound channel were performed using parallel walls and spur dikes as...

objectives : microbial leakage through the implant-abutment (i-a) interface results in bacterial colonization in two-piece implants. the aim of this study was to compare microleakage rates in three types of replace abutments namely snappy, goldadapt, and customized ceramic using radiotracing. materials and methods: three groups, one for each abutment type, of five implants and one positive and ...

A five unit fixed dental prosthesis with a pier abutment poses a unique challenge of a fulcrum and torquing forces at the intermediate abutment. The use of a rigid connector can lead to localization of forces on the pier abutment. Therefore, the use of a non-rigid connector as a stress breaker has been advocated to alleviate the situation. The following case report describes the factors associa...

PURPOSE The quality and stability of the soft tissue-implant interface is most likely of paramount importance for the preservation of marginal bone and for the long-term prognosis of oral implants. The aim of the present review was to screen existing data in the literature concerning the influence of transmucosal components' composition, type, design and disconnection on peri-implant tissues. ...

scour around bridge piers is one of the most important fields of hydraulic research. local scour around bridge piers and abutment is one of the main reasons of bridge failures. in the field of scour at the bridges, researches are more focus on scour of piers in compare with abutment. while the available information on the bridge failures required cost, the major problems are related to abutment...