[Shear bond test of HF acid etching machinable porcelain bonded to enamel with different concentration and disposing time].
After HF acid etching under 5 different HF concentrations and 6 exposing times, shear bonding strength of porcelain to enamel were tested. The results showed that HF acid etching technique had a positive influence on the bonding strength of porcelain to enamel. The most favorable concentration-time groups were 2.5%-5.0 min, 5.0%-5.0 min, 7.5%-2.5 min, 10.0%-1.0 min, 15.0%-0.5 min, and the debonding type of porcelain-resin-enamel composite body was mixed debonding.
Yu
H
H
College of Stomatology, West China University of Medical Sciences.
Du
C
C
Cao
Y
Y
D000134:Acid Etching, Dental / Q000379:methods; D000268:Adhesiveness; D002516:Ceramics / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel; D003776:Dental Porcelain / Q000737:chemistry*; D012994:Dental Soldering / Q000379:methods; D006801:Humans; D006858:Hydrofluoric Acid / Q000737:chemistry*; D013314:Stress, Mechanical; D013997:Time Factors
D003776:Dental Porcelain; C074543:Cerec; D006858:Hydrofluoric Acid