การเลือกหลักยึดสำหรับสะพานฟันที่รองรับด้วยรากฟันเทียมสำหรับการบูรณะฟันกราม

Abstract

Tooth loss is caused by a range of health problems, such as incurable cavities, periodontal disease, and accidents. Affects almost 10% of the world's population, therefore, there is a need for dentures to replace them. This makes dental implants an alternative to be used in restoration. Oral rehabilitation in patients with missing teeth in case of loss of more than one tooth, the bone space is limited and of insufficient quality to support a single tooth implant. Bridge implant restoration is another treatment option. Implant restorations may have mechanical complications such as screw loosening, screw and abutment fractures result from several factors including the choice of abutment type. This research aims to study the stress distribution in the implant components and analyze the screw loosening from the selection of different types of abutment namely Abutment type Hex abutment, Non-Hex abutment, and SCRP Abutment by implant-supported bridge restoration and Place the implant in the direction that the implant is non-parallel, and the selection of different types of the abutment was used by FEA modeling to simulate the clinical situation by simulating occlusion of chewing force of the lower right molar teeth and the upper incisor with a force of 220 N. The results showed that the angle of the implant affected the stress distribution on the abutment, but the choice of abutment type was not different because, within the experimental group where different abutments were selected, the stress distribution values were similar. But the unscrewing of the screws will have different characteristics for each experimental group, which by choosing Non-Hex+Non Hex abutment with the least unscrewing distance.