Evaluation of the machinability and machining accuracy of polymer-based CAD/CAM blocks using merlon fracture test model.
Dent Mater J
; 42(2): 273-281, 2023 Mar 30.
Article
em En
| MEDLINE
| ID: mdl-36696986
ABSTRACT
The aims of this study were to estimate the machinability and machining accuracy of polymer-based CAM blocks using the merlon fracture test model specified in ISO 18675 2022. Three hybrid disc blanks (MazicDuro, HC Disk, and Enamic) and three polymethyl methacrylate (PMMA) disc blanks (PMMA Disk, PMMA Block, and MazicTemp Hybrid) were tested in this study. The machinability was evaluated by assigning scores according to the fracture range of merlons with areas divided by ten vertical planes. The machining accuracy was evaluated by superimposing methods via CAD reference data and CAD specimen data. Within the limits of this study, a thickness of 0.3 mm is recommended for the clinical application of polymer-based CAD/CAM blocks in dental restorations that require superior machinability and accuracy. In addition, the machinability and machining accuracy tests of polymer-based CAM blocks are expected to provide guidelines for preparing accurate dental restorations.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Polimetil Metacrilato
Tipo de estudo:
Guideline
/
Prognostic_studies
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article