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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제6권 제5호
- 발행연도
- 2014.1
- 수록면
- 387 - 394 (8page)
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초록· 키워드
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PURPOSE. Topographic analysis of treated ceramics provides qualitative information regarding the surface texture affecting the micromechanical retention and locking of resin-ceramics. This study aims to compare the surface microstructure following different surface treatments of feldspathic porcelain. MATERIALS AND METHODS. This in-vitro study was conducted on 72 porcelain discs randomly divided into 12 groups (n=6). In 9 groups, feldspathic surfaces were subjected to sandblasting at 2, 3 or 4 bar pressure for 5, 10 or 15 seconds with 50 μm alumina particles at a 5 mm distance. In group 10, 9.5% hydrofluoric acid (HF) gel was applied for 120 seconds. In group 11, specimens were sandblasted at 3 bar pressure for 10 seconds and then conditioned with HF. In group 12, specimens were first treated with HF and then sandblasted at 3 bar pressure for 10 seconds. All specimens were then evaluated under scanning electron microscopy (SEM) at different magnifications. RESULTS. SEM images of HF treated specimens revealed deep porosities of variable sizes; whereas, the sandblasted surfaces were more homogenous and had sharper peaks. Increasing the pressure and duration of sandblasting increased the surface roughness. SEM images of the two combined techniques showed that in group 11 (sandblasted first), HF caused deeper porosities; whereas in group 12 (treated with HF first) sandblasting caused irregularities with less homogeneity. CONCLUSION. All surface treatments increased the surface area and caused porous surfaces. In groups subjected to HF, the porosities were deeper than those in sandblasted only groups.
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참고문헌 (26)
참고문헌 신청
Amin Salehi E. / 2013 / In vitro evaluation of the effect of different sandblasting times on the bond strength of feldspathic porcelain to composite resin / J Islam Dent Ass
Barghi N. / 2006 / Effects of porcelain leucite content, types of etchants, and etching time on porcelaincomposite bond / J Esthet Restor Dent 18 : 47 ~ 52
Blatz MB. / 2003 / Resin-ceramic bonding : a review of the literature / J Prosthet Dent 89 : 268 ~ 274
Darvell BW. / 2009 / Materials science for dentistry. 9th ed / Elsevier : 450 ~ 470
Della Bona A. / 2002 / Microstructure, composition, and etching topography of dental ceramics / Int J Prosthodont 15 : 159 ~ 167
Barghi N. / 2006 / Effects of porcelain leucite content, types of etchants, and etching time on porcelaincomposite bond / J Esthet Restor Dent 18 : 47 ~ 52
Blatz MB. / 2003 / Resin-ceramic bonding : a review of the literature / J Prosthet Dent 89 : 268 ~ 274
Darvell BW. / 2009 / Materials science for dentistry. 9th ed / Elsevier : 450 ~ 470
Della Bona A. / 2002 / Microstructure, composition, and etching topography of dental ceramics / Int J Prosthodont 15 : 159 ~ 167
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