A comparative study of mechanical properties of commercialized dental thermoplastic materials.
- Author:
Ning ZHANG
1
;
Dong-yu FANG
;
Yu-xing BAI
;
Xue-jia DING
;
Yu ZHANG
Author Information
- Publication Type:Journal Article
- MeSH: Analysis of Variance; Dental Materials; chemistry; Hot Temperature; Materials Testing; Orthodontic Appliances; Polyethylenes; chemistry; Polyvinyls; chemistry; Shear Strength; Stress, Mechanical
- From: Chinese Journal of Stomatology 2011;46(9):551-553
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo compare the mechanical properties of different dental optimal material selection for orthodontic appliance.
METHODSFour commercialized thermoplastic products under different test conditions, and provide the suggestion of thermoplastic products were tested. The tear strength, elongation at break and stress relaxation of these materials were measured under different test conditions.
RESULTSThe tear strength declined after thermoforming, and rose again after 2 weeks of distilled water immersion. The elongation at break rose after thermoforming, and declined after 2 weeks of distilled water immersion. No significant changes were observed for brand A under different test conditions. Brand A showed the slowest stress relaxation of 0.0148 N/s.
CONCLUSIONSThe mechanical properties of thermoplastic materials were influenced by environmental factors. Brand A exhibited optimal comprehensive properties.
