7Farah JW Powers JM,Remison JB, et al. Effects of cement bases on the stress and defections in composite restorations [J]. J Dent Res, 1976, 55:15-20
8Mecoy. On the longeoity of teeth [J]. J Oral Implantel, 1983, 6:248-249
9TellesD, pegoraro LF pereria JC. Prevalence of noncarious cervical lesions and their relation to occlusal aspect: a clinical study [J]. J P Esthet Dent, 2000, 12:10-157
10Wright KWJ, Yettramal. Reactive force distributions for teeth when loaded singly and when used as fixed paitial denture abutments [J]. J prosthe Dent, 1979, 42:411-416