Dimensional changes from the sintering process and fit of Y-TZP copings: Micro-CT analysis.

Objective: To evaluate the dimensional changes from the sintering process of Y-TZP and relate them to the fit of zirconia copings.

Methods: The sintering shrinkage rate (SSR) was obtained from the measurement of geometric specimens (4×4×2mm). Thirty-six zirconia copings made using CAD/CAM were equally divided into three groups (n=12): ZMAX - IPS e.

Effect of framework soldering on the deformation of implant abutments after framework seating: a study with strain gauges.

Introduction: Passive fit has been considered an important requirement for the longevity of implant-supported prostheses. Among the different steps of prostheses construction, casting is a feature that can influence the precision of fit and consequently the uniformity of possible deformation among abutments upon the framework connection.

Purpose: This study aimed at evaluating the deformation of abutments after the connection of frameworks either cast in one piece or after soldering.