3Kabbach W, Zezell D M , Pereira T M , ei al. A thermalinvestigation of dental bleaching in vitro [ J ]. PhotomedLaser Surg, 2008,26(5) ;489-493.
4Uslu O, Akcam M O, Evirgen S, et al. Prevalence of dental anomalies in various malocclusions[ J]. Am J Orth- od Dentofacial Orthop, 2009,135 (3) : 328-335.
5Martinho F C,Gomes B P. Quantification of endotoxinsand cultivable bacteria in root canal infection before andafter chemomechanical preparation with 2.5% sodium hy-pochlorite[J]. J Endod,2008,34(3) :268-272.
6扈祚文,钟文,谢培增,等.热带海域长期巡逻官兵牙(4):282-283.
7Krmek S J, Miletic I, Simeon P, et al. The temperature changes in the pulp chamber during cavity preparation with the Er: YAG laser using a very short pulse [ J]. Photomed Laser Surg, 2009,27(2) :351-355.
8Chaniotis A M,Tzanetakis G N,Kontakiotis E G, ei al.Combined endodontic and surgical management of a man-dibular lateral incisor with a rare type of dens invaginatus[J]. J Endod, 2008,34(10) ; 1255-1260.