Stress distribution of implants with external and internal connection design: a 3-D finite element analysis
Journal of Dental Rehabilitation and Applied Science
;
: 189-198, 2017.
Artigo
em Coreano
| WPRIM
| ID: wpr-169122
ABSTRACT
PURPOSE:
This study aims to analyze the stress distribution of mandibular molar restoration supported by the implants with external hex and internal taper abutment connection design. MATERIALS ANDMETHODS:
Models of external connection (EXHEX) and internal connection (INCON) implants, corresponding abutment/crowns, and screws were developed. Supporting edentulous mandibular bony structures were designed. All the components were assembled and a finite element analysis was performed to predict the magnitude and pattern of stresses generated by occlusal loading. A total of 120 N static force was applied both by axial (L1) and oblique (L2) direction.RESULTS:
Peak von Mises stresses produced in the implants by L2 load produced 6 – 15 times greater than those by L1 load. The INCON model showed 2.2 times greater total amount of crown cusp deflection than the EXHEX model. Fastening screw in EXHEX model and upside margin of implant fixture in INCON model generated the peak von Mises stresses by oblique occlusal force. EXHEX model and INCON model showed the similar opening gap between abutment and fixture, but intimate sealing inside the contact interface was maintained in INCON model.CONCLUSION:
Oblique force produced grater magnitudes of deflection and stress than those by axial force. The maximum stress area at the implant was different between the INCON and EXHEX models.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Força de Mordida
/
Análise de Elementos Finitos
/
Coroas
/
Dente Molar
Tipo de estudo:
Estudo prognóstico
Idioma:
Coreano
Revista:
Journal of Dental Rehabilitation and Applied Science
Ano de publicação:
2017
Tipo de documento:
Artigo
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