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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제9권 제5호
- 발행연도
- 2017.1
- 수록면
- 371 - 380 (10page)
이용수
초록· 키워드
오류제보하기
PURPOSE. The aim of this study is to evaluate and compare the stress distribution in Locator attachments in mandibular two-implant overdentures according to implant locations and different loading conditions.
MATERIALS AND METHODS. Four three-dimensional finite element models were created, simulating two osseointegrated implants in the mandible to support two Locator attachments and an overdenture. The models simulated an overdenture with implants located in the position of the level of lateral incisors, canines, second premolars, and crossed implant. A 150 N vertical unilateral and bilateral load was applied at different locations and 40 N was also applied when combined with anterior load at the midline. Data for von Mises stresses in the abutment (matrix) of the attachment and the plastic insert (patrix) of the attachment were produced numerically, color-coded, and compared between the models for attachments and loading conditions.
RESULTS. Regardless of the load, the greatest stress values were recorded in the overdenture attachments with implants at lateral incisor locations. In all models and load conditions, the attachment abutment (matrix) withstood a much greater stress than the insert plastic (patrix). Regardless of the model, when a unilateral load was applied, the load side Locator attachments recorded a much higher stress compared to the contralateral side. However, with load bilateral posterior alone or combined at midline load, the stress distribution was more symmetrical. The stress is distributed primarily in the occlusal and lateral surface of the insert plastic patrix and threadless area of the abutment (matrix).
CONCLUSION. The overdenture model with lateral incisor level implants is the worst design in terms of biomechanical environment for the attachment components. The bilateral load in general favors a more uniform stress distribution in both attachments compared to a much greater stress registered with unilateral load in the load side attachments. Regardless of the implant positions and the occlusal load application site, the stress transferred to the insert plastic is much lower than that registered in the abutment.
목차
등록된 정보가 없습니다.
참고문헌 (19)
참고문헌 신청
Awad MA / 2014 / The effect of mandibular 2-implant overdentures on oral health-related quality of life: an international multicentre study / Clin Oral Implants Res 25 : 46 ~
Cakarer S / 2011 / Complications associated with the ball, bar and Locator attachments for implantsupported overdentures / Med Oral Patol Oral Cir Bucal 16 : e953 ~ e959
Cristache CM / 2014 / Five-year clinical trial using three attachment systems for implant overdentures / Clin Oral Implants Res 25 : e171 ~ e178
Dantas Ide S / 2014 / Success and survival rates of mandibular overdentures supported by two or four implants: a systematic review / Braz Oral Res 28 : 74 ~ 80
Ellis JS / 2009 / Patient satisfaction with two designs of implant supported removable overdentures;ball attachment and magnets / Clin Oral Implants Res 20 : 1293 ~ 1298
Cakarer S / 2011 / Complications associated with the ball, bar and Locator attachments for implantsupported overdentures / Med Oral Patol Oral Cir Bucal 16 : e953 ~ e959
Cristache CM / 2014 / Five-year clinical trial using three attachment systems for implant overdentures / Clin Oral Implants Res 25 : e171 ~ e178
Dantas Ide S / 2014 / Success and survival rates of mandibular overdentures supported by two or four implants: a systematic review / Braz Oral Res 28 : 74 ~ 80
Ellis JS / 2009 / Patient satisfaction with two designs of implant supported removable overdentures;ball attachment and magnets / Clin Oral Implants Res 20 : 1293 ~ 1298
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