Mechanical analysis of three-unit metal-free fixed dental prostheses produced in different materials with CAD/CAM technology.
Clin Oral Investig
; 26(9): 5969-5978, 2022 Sep.
Article
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| MEDLINE
| ID: mdl-35869306
ABSTRACT
OBJECTIVES:
The aim of this study was to evaluate the mechanical analysis of different three-unit metal-free fixed dental prostheses (FDPs) produced by computer-aided design (CAD)/computer-aided manufacturing (CAM). MATERIALS ANDMETHODS:
A hundred stainless steel die models of a mandibular left first premolar and a mandibular left first molar were prepared. The specimens were divided into five CAD/CAM material groups (n = 20) Group ZIR, a cubic zirconia (DD cube ONE®); Group FRC, FRC resin material (Trinia); Group PEEK, a PEEK material (KERA® starPEEK); Group PEKK, a PEKK material (Pekkton® ivory); and Group COMP, a polymer composite material (BreCAM.HIPC). Compression test was applied to the specimens, and then the results were analyzed statistically using one-way ANOVA and Tukey's tests. In addition, deformation analyses in FDPs were compared with finite element method (FEM). After the compression test, the damage to FDPs was evaluated with a scanning electron microscopy.RESULTS:
Although ZIR (2461 ± 93.70 N) showed high fracture load values, FRC (1571 ± 35.96 N) material was found to be advantageous in terms of toughness. These were followed by PEEK (1398 ± 38.26 N), PEKK (1227 ± 44.25 N), and COMP (829 ± 32.33 N), respectively. A ductile fracture was observed in PEEK, PEKK, and FRC due to their elastic structures. The deformation properties examined by the FEM were found to be similar to the compression test.CONCLUSIONS:
CAD/CAM high-performance polymers and cubic zirconia material can be used in three-unit FDPs. In three-unit FDPs, the use of FRC material can be advantageous due to both biomechanics and lightness. CLINICAL RELEVANCE Metal-free CAD/CAM materials may offer new possibilities in three-unit FDPs.Palabras clave
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Banco de datos:
MEDLINE
Asunto principal:
Circonio
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Fracaso de la Restauración Dental
Idioma:
En
Revista:
Clin Oral Investig
Asunto de la revista:
ODONTOLOGIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Turquía