RSUSCI-2022 & RSUSOC-2022
IN22-035 An in vitro Pilot Study Compared Volumetric Changes of Dental Implants in the Titanium Abutment and Zirconia Abutment, after Cyclic Loading.
Presenter: Piyawan Jirayusakamol
Esthetic restorative and implant dentistry (international program), faculty of dentistry, Chulalongkorn University
Abstract
Although dental implants have a high success rate, aesthetic effects are a concern. Zirconia abutments are used to prevent tissue shadowing from titanium; nevertheless, the literature suggests that using zirconia abutments leads to increased degradation of the implant interface, which could lead to biological problems such as Titanium scars and poisonous metals. Previous research has looked at the mechanical features of the implant/abutment connection, but it hasn’t considered the volume loss of the dental implant that occurs in the oral cavity’s dynamic environment. The volume loss of wear at the dental implant under cyclic loading was studied in this pilot investigation. The goal of this pilot study was to determine the volume of titanium implants after cyclic loading in 2 main types of abutments. In the investigation, fourteen dental implants were used. 7 dental implants were used in conjunction with titanium abutments (Group1: Variobase abutment Straumann) and another 7 dental implants with zirconia abutments (Group 2: CARE abutment Straumann). Cyclic loading was applied to the abutments (1x106 cycles, axial load, 100N, 15 Hz). The volumetric of the titanium implant was evaluated using a real density analyzer (AccuPyc II). The independent t-test was used to investigate differences in implant volume and % volume loss among two abutment types. A p-value of less than 0.05 was considered statistically significant. After cyclic loading, the volume of dental implants in the zirconia group decreased and the photograph loading found the grayish area was found at the hex of the dental abutment. After cyclic loading, there was no significant difference in the volumetric changes of dental implants in the titanium abutment and zirconia abutment. Cyclic loading at 100 N causes titanium implants to lose more volume when connected to zirconia abutments than when connected to titanium abutments.