5Otto T,DE Nisco S.Computer-aided direct ceramic restora-tions:a 10-year prospective clinical study of Cerec CAD/CAM Inlayss and onlays[J].Int J Prosthodont,2002,15(2):122.
6Ellis SG. Incomplete tooth fracture - proposal for a new definition[J]. Br Dent J,2001,190(8) :424 -428
7Ehrmann EH, Tyas MT. Cracked tooth syndrome: diagnosis,treatment and correlation between symptoms and post - extraction findings[J]. Aust Dent J,1990,35(2) :105 - 112
8Ratcliff S,Becker IM,Quinn L. Type and incidence of cracks in posterior teeth [J]. J Prosthet Dent, 200 1, 86 ( 2 ): 168 - 172
9Homewood CI. Cracked tooth syndrome - Incidence, clinical findings and treatment[J]. Aust Dent J, 1998,43(4) :217 -222
10Hansen E,Asmussen E, Christiansen N. In vivo fractures of endodontically treated posterior teeth restored with amalgans [J].Endod Dent Traumatol, 1990, ( 6 ) :49 - 55
