A STUDY OF MICROHARDNESS AND POLYMERIZATION SHRINKAGE OF PACKABLE RESINS

Son, Deok-Il; Nam, Soon-Hyeun; Kim, Hyun-Jung; Seol, Hyo-Joung; Kwon, Yong-Hoon; Kim, Hyung-Il; Kim, Young-Jin

Journal of the Korean Academy of Pediatric Dentistry 2004;31(3):534-540.
Published online August 31, 2004.

A STUDY OF MICROHARDNESS AND POLYMERIZATION SHRINKAGE OF PACKABLE RESINS

Deok-Il Son¹, Soon-Hyeun Nam¹, Hyun-Jung Kim¹, Hyo-Joung Seol², Yong-Hoon Kwon², Hyung-Il Kim², Young-Jin Kim¹

¹
²

Packable resin의 미세경도와 경화수축

손덕일¹, 남순현¹, 김현정¹, 설효정², 권용훈², 김형일², 김영진¹

¹경북대학교 치과대학 소아치과학교실
²부산대학교 치과대학 치과재료학교실

Correspondence: Young-Jin Kim,

Abstract

Packable resins have been introduced in the market with high expectations as an alternative to amalgam. They are characterized by a high-filler load and a filler distribution that gives them a different consistency compared with the hybrid resins. The effect of high filler load on the microhardness and polymerization shrinkage of packable resins was tested. Hybrid resins were also tested to compared with the packable resins. As a result, packable resins showed a much greater microhardness value than hybrid resins. All the tested resins have a correlationship with the microhardness and filler content (vol%). The packable resins showed much less polymerization shrinkage than hybrid resins. The filler content and polymerization shrinkage were inversely correlated in the tested resins.

Key Words: Packable resin, Microhardness, Polymerization shrinkage