치과용 지르코니아 표면 특성이 레진시멘트와의 결합강도에 주는 영향
The Effect of Surface Characteristics on the Shear Bond Strength of Dental Zirconia with Resin Cements
나종찬, 허수복, 최재윤, 이상훈, 양형철, 임범순,
소속 상세정보
나종찬 ( Na Jong-Chan ) - 서울대학교 치과대학 치과생체재료과학교실
허수복 ( Her Soo-Bok ) - 서울대학교 치과대학 치과생체재료과학교실
최재윤 ( Choi Jae-Yoon ) - 서울대학교 치과대학 치과생체재료과학교실
이상훈 ( Lee Sang-Hoon ) - 서울대학교 치과대학 치과생체재료과학교실
양형철 ( Yang Hyeong-Cheol ) - 서울대학교 치과대학 치과생체재료과학교실
임범순 ( Lim Bum-Soon ) - 서울대학교 치과대학 치과생체재료과학교실
KMID : 0362220100370010009
Abstract
The purpose of this study was to evaluate the influence of surface characteristics and different resin cements on the shear bond strength of dental zirconia ceramics. Three zirconia ceramics (Cercon Base, Lava, ZirAce) were tested. The specimens were equally divided into four groups according to the surface treatment (mirror polished, CTL; ground with #80 diamond wheels, GD; sandblasted, SD; Rocatec treated, RC). After surface treatment, surface roughness, contact angle, and shear bond strength with four resin cements (Single bond, SB; Panavia F 2.0, PF; Clearfil SE Bond, CE; Superbond C&B, SU) were measured. Surface treatments did not cause significant differences in surface roughness (p>0.05). There was no significant different in contact angle between CTL and GD group (p>0.05), however, contact angles were significantly decreased in SD and RC groups. The total surface energy of GD and SD groups was significantly increased. RC group showed the highest surface energy and there were no significant differences in zirconia ceramics. The shear bond strength was significantly increased in SB, PF and CE resin cement groups after surface treatments (p<0.05). SD and RC groups showed higher shear bond strength than CTL. In SU groups, CTL showed the highest shear bond strength, there were not significantly differences with surface treatments in shear bond strength (p>0.05). There were very low correlations between surface roughness of zirconia and shear bond strength. Correlations between contact angle of zirconia and shear bond strength were different with application of different resin cement. Correlation was high in the order of SU, CE, SB and PF resin cements
키워드
Zirconia;Surface roughness;Contact angle;Surface treatment;Shear bond strength
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