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http://dx.doi.org/10.5933/JKAPD.2021.48.2.168

Comparison of Microleakage and Compressive Strength of Different Base Materials  

Jang, Eunyeong (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
Lee, Jaesik (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
Nam, Soonhyeun (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
Kwon, Taeyub (Department of Dental biomaterials, School of Dentistry, Kyungpook National University)
Kim, Hyunjung (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
Publication Information
Journal of the korean academy of Pediatric Dentistry / v.48, no.2, 2021 , pp. 168-175 More about this Journal
Abstract
This study compared the microleakages and compressive strengths of various base materials. To evaluate microleakages, 50 extracted permanent premolars were prepared. The teeth divided into 5 groups of 10 each according to the base materials. Cavities with a 5.0 mm width, 3.0 mm length, and 3.0 mm depth were formed on the buccal surfaces of the teeth. After filling the cavities with different base materials, a composite resin was used for final restoration. Each specimen was immersed in 2% methylene blue solution and then observed under a stereoscopic microscope (× 30). To evaluate the compressive strength, 5 cylindrical specimens were prepared for each base material. A universal testing machine was used to measure the compressive strength. The microleakage was highest in the Riva light cureTM group and lowest in the BiodentineTM and Well-RootTM PT groups. For the compressive strengths, in all groups, acceptable strength values for base materials were found. The highest compressive strength was observed in the Fuji II LCTM group and the lowest strength in the Well-RootTM PT group.
Keywords
Base material; Glass ionomer cement; Mineral trioxide aggregate; Tricalcium silicate-based material; Microleakage; Compressive strength;
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