TY  - JOUR
TI  - Evaluation of Some Mechanical Properties of CAD/CAM 
Polymers (PEEK/PMMA) and Conventional PMMA Materials: 
An In Vitro Study
AB  - Objective: The present study aims to investigate the 
mechanical properties of base materials [polymethyl methacrylate 
(PMMA)/polyether ether ketone (PEEK)] fabricated with computeraided design/computer-aided manufacturing (CAD/CAM) and heatpolymerized conventional base materials. Material and Methods: Two 
different base polymers milled with CAD/CAM (Yamahachi PMMA 
Disk and Juvora Dental Disk PEEK) and heat-polymerized acrylic resin 
(Meliodent PMMA) were used in this study. A total of 120 specimens 
were prepared with 10 specimens in each subgroup of the test materials. Half of the test specimens were stored in distilled water, while the 
other half were subjected to a thermal cycle. After the thermal cycle, the 
flexural strength, elasticity module, and, surface hardness of all test 
specimens was evaluated. The Mann-Whitney U and Kruskal-Wallis 
tests were used in the analysis of the data. Results: According to the 
findings of flexural strength and elasticity module of the test specimens, 
the highest to lowest value ranking was as follows: CAD/CAM 
PEEK>CAD/CAM PMMA>heat-polymerized PMMA. In the PMMA 
group produced with CAD/CAM, surface hardness values were significantly higher in the thermocycle applied test specimens compared to 
those stored in distilled water (p<0.001). Conclusion: CAD/CAM 
PMMA and PEEK materials were compared with the heat-polymerized 
test specimens found to show better mechanical properties.
AU  - ERGÜN, Gülfem
AU  - Ataol, Ayse Seda
AU  - ŞAHİN, Zeynep
AU  - ERGÖÇEN, Salih
DO  - 10.5336/dentalsci.2021-83103
PY  - 2022
JO  - Türkiye Klinikleri Diş Hekimliği Bilimleri Dergisi
VL  - 28
IS  - 1
SN  - 1300-7734
SP  - 139
EP  - 148
DB  - TRDizin
UR  - http://search/yayin/detay/521918
ER  -