지르코니아 세라믹과 레진 시멘트의 결합강도
Bond strength of resin cements to zirconia ceramic
장문숙, 김지혜, 박주미, 송광엽, 조석규, 복원미,
소속 상세정보
장문숙 ( Chang Mun-Suk ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
김지혜 ( Kim Ji-Hye ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
박주미 ( Park Ju-Mi ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
송광엽 ( Song Kwang-Yeob ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
조석규 ( Cho Suck-Kyu ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
복원미 ( Bok Won-Mi ) - 전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소
KMID : 0362420050430040426
Abstract
Statement of problem: Although zirconium oxide ceramics are more and more commonly used in restorative dentistry, for many clinical applications only limited data can be found in the literature. However, it is quite clear that hydrofluoric acid etching is impossible with zirconia ceramics. Therefore, other bonding techniques are required in order to lute these materials adhesively.
Purpose: The purpose of this study was to evaluate the effects of surface treatments on shear bond strengths between two resin cements and a zirconia ceramic.
Materials & Methods: Experimental industrially manufactured yttrium-oxide-partially-stabilized zirconia ceramic discs (Adens, Korea) were used for this study. The ceramic specimens divided into five experimental groups and a control group (as received). Five surface treatments were studied. 1) sandblasting with 110 micrometer Al2O3 at 3 bars pressure 13 seconds at a distance of 10mm, 2) flame-treated with the Silano-Pen for 5 s/cm2, 3) grinding with a diamond bur, 4) sandblasting + Silano-Pen treatment, 5) diamond bur preparation+ Silano-Pen treatment. Acrylic plastic tube (5 mm in height and 3 mm in diameter) were filled with composite to fabricate composite cylinders. The composite cylinders were bonded to the ceramic specimens with either Superbond C & B or Panavia F resin luting agents. All cemented specimens were tested under shear loading until fracture on universal testing machine at a crosshead speed 1mm/min, the maximum load at fracture was recorded. Shear bond strength data were analyzed with oneway analysis of variance and Tukey HSD tests (p<.05). Treated ceramic surfaces and fracture surfaces after shear testing were examined morphologically using scanning electron microscope.
Results: Ceramic surface treatment with Silano-Pen after sandblasting improved the bond strength of Superbond C & B resin cement. Superbond CandB resin cement at Silano-Pen after sandblasting(27.4 +/- 3.8 MPa) showed statistically higher shear bond strength than the others.
Conclusion: Within the limitation of this study, Superbond C & B resin cement are suitable for cementation of zirconia ceramics and flame-treated with the Silano-Pen after sandblasting is required to enhance the bond strength.
키워드
zirconia ceramics;Pyrosil-Pen;Shear bond strength;Sandblasting
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