Effect of multiple reuse of commonly used implant analogs on the changes in the distance between internal threads: An study.

Aim: To assess the effect of multiple reuse of implant analogs of three different materials (SS, Ti, Al) on the changes in the distance between internal threads of implant analog by using two die materials at different time intervals (0, 3, 6, 9, and 12).

Settings And Design: An in vitro study.

Materials And Methodology: Three commonly used implant analog materials (stainless steel, titanium, and aluminum) and two Type- IV die stone materials (Kalrock and Zhermack Elite) were used to make the samples.

Comparison of the effect of monolithic and layered zirconia on natural teeth wear: An study.

Aim: The aim of this study is to compare wear of the natural teeth against monolithic zirconia and layered zirconia with different surface finishing procedures such as unpolished unglazed, polished unglazed, and polished glazed.

Materials And Methods: The two-bodied wear test was carried out in a custom-made oral wear simulator with a sample size of 60 zirconia specimen opposing natural teeth. Zirconia specimen was divided into two groups layered and monolithic which further subdivided into unpolished unglazed, polished unglazed, and polished glazed groups ( = 10).