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표면처리에 따른 금속과 간접복합레진간의 전단결합강도 비교연구

Other Titles
 Comparison of shearbond strength between metal and indirect resin according to the different conditionings 
 Su-Young Choi  ;  Hyunmin Choi  ;  Hong-Seok Moon  ;  June-Sung Shim  ;  Young-Bum Park  ;  Geun-Woo Lee 
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.55(3) : 264-271, 2017 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
Issue Date
Shear bond strength ; Indirect composite resin ; Metal ; Gold alloy ; Ni-Cr alloy
Purpose: The purpose of this study is to investigate the differences in bond strength of four different indirect composites to the gold alloy and Ni-Cr alloy according to type of metal surface treatment after water storage. Materials and methods: Type IV gold alloy and Ni-Cr alloy were used for casting alloy while four types of indirect composite resins (Gradia, Tescera Sinfony and in;joy) were used in this study. Metal specimens were produced by casting and total of 240 specimens (60 specimens per one indirect composite group) were prepared. After bonding indirect composite resin and undergoing 24 hours of polymerization, customized jig was attached to the metal specimen and shear bond strength were measured using universal testing machine. Also, differences in shear bond strength before and after water storage for 240 hours were also measured. Results: In the measurement of shear bond strength according to the metal surface treatments, bead group showed high strength followed by loop and flatting group (P<.05). After being stored in water bath for 240 hours, Gradia showed statistically significant high bond strength compared to other indirect composite resins in all groups (P<.05). Conclusion: Shearbond strength was found to be different according to type of metal surface treatment and type of metal used after storage in water. Further studies need to be developed for clinical practices as three are still problems of microleakage, stain or wear.
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1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실)
Yonsei Authors
문홍석(Moon, Hong Seok) ORCID logo https://orcid.org/0000-0001-8118-8145
박영범(Park, Young Bum)
심준성(Shim, June Sung) ORCID logo https://orcid.org/0000-0003-1428-0122
이근우(Lee, Keun Woo) ORCID logo https://orcid.org/0000-0002-3153-190X
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