Study of a “wing-type” implant on stress distribution and bone resorption at the alveolar crest

• 영문명: Study of a “wing-type” implant on stress distribution and bone resorption at the alveolar crest
• 발행기관: 대한구강악안면외과학회
• 저자명: Jong-Wook Park Sin-Guen Kim Dong-Won Choi Mi-Ra Choi Youn-Jin Yoon Jun-Woo Park Dong-Ju Choi
• 간행물 정보: 『대한구강악안면외과학회지』대한구강악안면외과학회지 제38권 제6호, 337~342쪽, 전체 6쪽
• 주제분류: 의약학 > 내과학
• 파일형태: PDF
• 발행일자: 2012.12.30

영문 초록

Objectives: Implants connect the internal body to its external structure, and is mainly supported by alveolar bone. Stable osseointegration is therefore required when implants are inserted into bone to retain structural integrity. In this paper, we present an implant with a “wing” design on its area. This type of implant improved stress distribution patterns and promoted changes in bone remodeling. Materials and Methods: Finite element analysis was performed on two types of implants. One implant was designed to have wings on its cervical area, and the other was a general root form type. On each implant, tensile and compressive forces (30 N/m 2 , 35 N/m 2 , 40 N/m 2 , and 45 N/m 2 ) were loaded in the vertical direction. Stress distribution and displacement were subsequently measured. Results: The maximum stresses measured for the compressive forces of the wing-type implant were 21.5979 N/m 2 , 25.1974 N/m 2 , 29.7971 N/m 2 , and 32.3967 N/m 2 when 30 N/m 2 , 35 N/m 2 , 40 N/m 2 , and 45 N/m 2 were loaded, respectively. The maximum stresses measured for the root form type were 23.0442 N/m 2 , 26.9950 N/m 2 , 30.7257 N/m 2 , and 34.5584 N/m 2 when 30 N/m 2 , 35 N/m 2 , 40 N/m 2 , and 45 N/m 2 were loaded, respectively. Thus, the maximum stresses measured for the tensile force of the root form implant were significantly higher (about three times greater) than the wing-type implant. The displacement of each implant showed no significant difference. Modifying the design of cervical implants improves the strength of bone structure surrounding these implants. In this study, we used the wing-type cervical design to reduce both compressive and tensile distribution forces loaded onto the surrounding structures. In future studies, we will optimize implant length and placement to improve results. Conclusion: 1. Changing the cervical design of implants improves stress distribution to the surrounding bone. 2. The wing-type implant yielded better results, in terms of stress distribution, than the former root-type implant.

목차

I. Introduction

II. Materials and Methods

III. Results

IV. Discussion

V. Conclusion

키워드

Dental implant Wing Modification