체결력을 고려한 내부 및 외부연결형 임플란트의 반복 하중에 대한 풀림 연구
Loosening behavior of Internal and External Connection Dental Implants under Cyclic Loads Considering Pre-fastening Force
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This paper presents the loosening behavior that occurs after the application of an external load to internal and external connection types of dental implants using the finite element method. We use fastening force between an abutment and a fixture to clamp the dental implant system; however, loosening and breakage may occur owing to cyclic external loads. In this study, we considered the initial fastening condition in the pre-load analysis and then investigated the change in stress and contact surface status when applying external loads. After the application of the initial fastening load, we verified that the internal connection-type model exhibited a relatively lower stress distribution than that of the external connection-type one. Moreover, we found that the former model showed a lower stress concentration after the application of the external load. In addition, after the application of this load, we found that the higher the shear load acting on the implant system, the higher the possibility of loosening. The study results showed the change in stress distribution and contact surface according to the connection type of the dental implants and the phenomenon of loosening by cyclic loads. We expect that the results of this study will be useful for the study of reliability and design of dental implant systems.
Abstract
This paper presents the loosening behavior that occurs after the application of an external load to internal and external connection types of dental implants using the finite element method. We use fastening force between an abutment and a fixture to clamp the dental implant system; however, loosening and breakage may occur owing to cyclic external loads. In this study, we considered the initial fastening condition in the pre-load analysis and then investigated the change in stress and contact surface status when applying external loads. After the application of the initial fastening load, we verified that the internal connection-type model exhibited a relatively lower stress distribution than that of the external connection-type one. Moreover, we found that the former model showed a lower stress concentration after the application of the external load. In addition, after the application of this load, we found that the higher the shear load acting on the implant system, the higher the possibility of loosening. The study results showed the change in stress distribution and contact surface according to the connection type of the dental implants and the phenomenon of loosening by cyclic loads. We expect that the results of this study will be useful for the study of reliability and design of dental implant systems.
참고문헌 (18)
- Wittneben, J. G., "Complication and failure rates with implant-supported fixed dental prostheses and single crowns : a 10-year retrospective study", Clin Implant Dent Relat Res, 16(3), pp.356~364 (2014)[DOI]
- Sánchez-Pérez, A., "Etiology, risk factors and management of implant fractures", Med Oral Patol Oral Cir Bucal, 15(3), pp.504~508 (2010)
- Segundo, R. M., "Stress distribution of an internal connection implant prostheses set : a 3D finite element analysis", Stomatologija, Baltic Dental and Maxillofacial Journal, 11(2), pp.55~59 (2009)
- Klarbring, A., "New Developments in Contact Problems, Vol.384", pp.55~100 (1999), Springer
- Fujita, R., "Enumeration of all wedged equilibrium configurations in contact problem with coulomb friction", Comput Methods Appl Mech Eng, 199, pp.1202~1215 (2010)[DOI]
- Barber J. R., "Modeling and Simulation of Tribological Problems in Technology. CISM International Centre for Mechanical Sciences (Courses and Lectures), Vol.593", pp.41~93 (2020), Springer
- Sangkyu Kim, "Determination of critical wedging coefficient for full-contact frictional systems using positive spanning", International Journal of Mechanical Sciences, 177, pp.105576~ (2020), Elsevier BV[DOI]
- 김상규, "분리 상태를 고려한 탄성마찰시스템의 임계 쐐기 계수", 한국트라이볼로지학회지, 36(6), pp.324~331 (2020), 한국트라이볼로지학회[DOI]
- Seo, J., "Development of an analytical model for dental screw loosening", Proc. Fall Conf. KSME (2005)
- Seo, J., "Study of an analytical model for screw loosening mechanism of dental implant", Proc. Spring Conf (2007), KSME
- Seo, J., "Analysis of loosening mechanism of different connection for dental implant", Proc. Fall Conf (2007), KSME
- 정현주, "내측 연결 및 외측 연결 방식으로 설계된 임플란트의 3차원적 유한요소 응력 분석", 구강회복응용과학지, 33(3), pp.189~198 (2017), 대한턱관절교합학회[DOI]
- He, Y., "Contact analysis of gap formation at dental implant-abutment interface under oblique loading : A numericalexperimental study", Clin Implant Dent Relat Res, 21(4), pp.741~752 (2019)[DOI]
- Kitagawa, T., "Influence of implant", abutment joint designs on abutment screw loosening in a dental implant system, 2005, pp.75(2), 457~463
- Cleidiel Aparecido Araujo Lemos, "Comparison of external and internal implant-abutment connections for implant supported prostheses. A systematic review and meta-analysis", Journal of Dentistry, 70, pp.14~22 (2018), Elsevier BV[DOI]
- Kanneganti, K. C., "Comparative effect of implant-abutment connections, abutment angulations, and screw lengths on preloaded abutment screw using threedimensional finite element analysis : An in vitro study", J Indian Prosthodont Soc, 18(2), pp.161~167 (2018)
- Mao, Z., "Influence of sizes of abutments and fixation screws on dental implant system : a non-linear finite element analysis", biomedical engineering, 2017, pp.62(4), 357~364
- Gurcan Eskitascioglu, "The influence of occlusal loading location on stresses transferred to implant-supported prostheses and supporting bone: a three-dimensional finite element study", The Journal of Prosthetic Dentistry, 91(2), pp.144~150 (2004), Elsevier BV[DOI]