[Stress in an implant-supported unitary fixed partial prosthesis with different materials in the first lower premolar through finite elements]. / Tensiones en una prótesis parcial fija unitaria implantosoportada en primer premolar inferior con diferentes materiales mediante elementos finitos.
Rev Cient Odontol (Lima)
; 11(1): e140, 2023.
Article
en Es
| MEDLINE
| ID: mdl-38288318
ABSTRACT
AIM:
To analyze stress in a metal-ceramic, zirconia and lithium disilicate implant-supported unitary fixed partial prosthesis in the first lower premolar through finite element analysis at a 500 N force. MATERIALS ANDMETHODS:
Three study models were carried out, metal-ceramic, lithium disilicate and zirconium implant-supported crowns in the first lower premolar. The dental implant was made of titanium grade 5 based on the Bolt® model of UniDentalDirect with internal grooved connection (18 grooves) and the implant had a size of 11,0 x 4,5 mm, preformed abutment and integrated screw. The three designs had vertical and oblique (45°) forces applications at 500 N. The geometric modeling was performed with the SolidWorks® 2017 program and the results were obtained through the Von mises analysis using the CosmoWorks®2017 program.RESULTS:
The lowest value of maximum stress on crown level, under vertical and oblique forces, was found in the lithium disilicate crown with 21,9 MPa and 33,2 MPa, and with a minimum difference with the zirconium crown with 22,1 MPa and 35,1 MPa; on the abutment level, the zirconium crown had the lowest value of maximum stress with 18,6 MPa and 28,1 MPa; at the screw level, there were no significant differences.CONCLUSION:
Metal-ceramic, lithium disilicate, and zirconia crowns proved to be materials of good compressive and tensile strength, but it was concluded that the zirconia crown design generated lower overall stress.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
Es
Revista:
Rev Cient Odontol (Lima)
Año:
2023
Tipo del documento:
Article
Pais de publicación:
PE
/
PERU