Effect of pH variation on flexural and compressive properties of composite resins
10.14815/kjdm.2019.46.2.53
- Author:
Sang Bong JUNG
1
;
Keun MOON
;
Hyo Joung SEOL
;
Jung Sook KANG
;
Yong Hoon KWON
Author Information
1. Department of Oral Biochemistry, School of Dentistry, Pusan National University, Pusan, Korea.
- Publication Type:Original Article
- Keywords:
Composite resin;
pH;
Flexural property;
Compressive property
- MeSH:
Beverages;
Composite Resins;
Compressive Strength;
Hydrogen-Ion Concentration;
Immersion;
Mouth
- From:
Korean Journal of Dental Materials
2019;46(2):53-60
- CountryRepublic of Korea
- Language:English
-
Abstract:
The pH of the oral cavity can dynamically change due to diverse foods and beverages served. The purpose of the present study was to evaluate flexural and compressive properties of composite resins after immersion in solutions of different pHs. Four composite resins were cured and immersed in test solutions of different pHs (3, 7.1, and 9) for 2 weeks. Flexural and compressive properties (strength and modulus) were evaluated using universal test machine. After immersion, initial flexural and compressive strength significantly changed to 1.5–30.0% and 0.3–19.6%, respectively; flexural and compressive modulus significantly changed to 4.4–29.0% and 3.5–21.5%, respectively. However, the values obtained from solutions of different pHs were not significantly and consistently different to each other.
