The Flexural Strength of Y-TZP Coated with Carbonate Apatite for Dental Implant Material

Abstract

In order to gain acceleration of the osseointegration process after implant placement, micro retention using inorganic elements such as Hydroxyapatite (HA) were commonly used as a coating material in dental implant. Meanwhile, another inorganic material such as Carbonate Apatite (CO3Ap) has been known as bone substitute for decades. The purpose of this study is to investigate the flexural strength of Yttria-Stabilized Zirconia (Y-TZP) as dental implant material after being coated with CO3Ap. Ten specimens of Y-TZP were divided into two groups. The first group was coated with CO3Ap while other groups without coatings were used as the control. Biaxial flexural strength was determined using piston on three balls-technique and data were evaluated by statistical analysis. The specimens surface were analyzed through images taken by Scanning Electron Microscope (SEM). As the result, this study showed that there was no statistically significant found between the group with coating and the control group (p>0.05). The biaxial flexural strength’s mean of the group with coating and control were 212.80 MPa and 209.35 MPa; while micro Vickers hardness’ means were 229.56 HV and 245.40 HV. It can be concluded that there was no difference in the mean flexural strength between Y-TZP before and after coating.