Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (3): 461-464.doi: 10.3969/j.issn.1673-8225.2010.03.019

Previous Articles     Next Articles

Effect of different types of cements and the timing of tooth preparation on the coronal microleakage of fiber post

Lei Hui-yun1, Chen Lei1, Xu Guo-fu2, Liang Xiao-peng2, Li Ji-jia1   

  1. 1 Department of Stomatology, Xiangya Hospital, Central South University, Changsha   410008, Hunan Province, China; 2 School of Materials Science and Engineering, Central South University, Changsha  410008, Hunan Province, China
  • Online:2010-01-15 Published:2010-01-15
  • Contact: Chen Lei, Associate chief physician, Department of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China chenleidt@163.com
  • About author:Lei Hui-yun★, Studying for master’s degree, Department of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China leihuiyun_xy@163.com
  • Supported by:

    the Natural Science Foundation of Hunan Province, No. 09JJ3029*

PDF

495

Abstract:

BACKGROUND: The vibration of high speed handpiece during tooth preparation may have adverse effect on the continuous force of the bonding interfaces among the cement, dentin, and post core.
OBJECTIVE: To find the effect of different types of cements on the coronal microleakage of fiber post under different tooth preparation timings, and to provide evidence for the clinical operation.
METHODS: The extracted mandibular premolars were divided into 3 groups, and they were cemented by Rely X luting, Panavia F and Paracore 5 mL, respectively. Each group was averagely divided into 3 subgroups: A, B, C groups which were prepared 15 minutes, 45 minutes, and 90 minutes after the cements mixed. All roots were then dyed and transparented. The teeth were observed under stereoscopic microscope and the dyeing scores were also recorded.
RESULTS AND CONCLUSION: Rely X luting caused the highest coronal microleakage of fiber post, followed by Panavia F, while Paracore 5 mL brought about the lowest under the same tooth preparation timing. Different tooth preparation timing caused no significant effect on the coronal microleakage of fiber post when the cement had been completely set.

CLC Number: