Five-year evaluation of Lifecore Restore implants: a retrospective comparison with Nobel Biocare MK II implants.

Purpose: The purpose of this study was to compare survival rates and marginal bone resorption of the Lifecore (LC) Restore Implant System with the benchmark Nobel Biocare (NB) MK II Implant System.

Materials And Methods: All implants were inserted by the same surgeon and all radiological analyses were performed by the same radiologist. Two hundred ninety LC implants were analyzed radiologically after 1 year and compared with the same number of NB implants serving as a historical reference group.

Loose gold screws frequently occur in full-arch fixed prostheses supported by osseointegrated implants after 5 years.

The possible occurrence of loose gold and abutment screws retaining full-arch osseointegrated prostheses has been investigated. The prostheses had been in use for at least 5 years. The findings were related to clinical parameters such as accuracy of the superstructure, operator dependence, and clinical and radiological diagnosis of implant status after 5 years.

Titanium copings veneered with Procera ceramics: a longitudinal clinical study.

In 1989, 47 titanium copings veneered with a low-fusing ceramic were fabricated for 24 patients. Forty-four crowns could be examined after a period varying between 26 and 30 months. It was found that the bulk ceramic of two crowns had fractured.

A clinical examination of ceramic (Cerec) inlays.

Two hundred and five Cerec ceramic inlays placed by 8 dentists in 72 patients were examined independently by 3 calibrated evaluators 12-24 months after insertion, using the criteria of the California Dental Association (CDA) and also certain periodontal variables. Proximal dental plaque and bleeding on probing were not seen more often on Cerec surfaces than on control homologous surfaces. Ten patients reported postoperative sensitivity after treatment with Cerec inlays.

The castability of unalloyed titanium in three different casting machines.

The general demand for a variety of fine detail work made of titanium has resulted in the development of equipment/systems for the casting of this metal. Dental casting machines suitable for the casting of titanium are now also available. The aim of the present study was therefore to evaluate the possibility of precision casting of dental crown restorations of unalloyed titanium.