Chinese Journal of Tissue Engineering Research

Previous Articles     Next Articles

Influences of cobalt-chromium alloy versus silver-palladium alloy porcelain crown on periodontal tissues

Li Hong-yang1, Zhong Li-fang2, Liu Bing1, Cai Hong-dan1   

  1. 1 The 202nd Hospital of PLA, Shenyang  110812, Liaoning Province, China
    2 Stomatological School, China Medical University, Shenyang  110001, Liaoning Province, China
  • Received:2012-11-14 Revised:2013-03-08 Online:2013-05-21 Published:2013-05-21
  • Contact: Li Hong-yang, the 202nd Hospital of PLA, Shenyang 110812, Liaoning Province, China lihongyang202@sohu.com
  • About author:Li Hong-yang★, Master, Chief physician, the 202nd Hospital of PLA, Shenyang 110812, Liaoning Province, China
  • Supported by:

    the Natural Science Foundation of Liaoning Province, No. 2009225009-15

Abstract:

BACKGROUND: Metal porcelain crown is the most commonly used method of repair of dental defects, and periodontal problems are the most common causes of repair failure.
 OBJECTIVE: To evaluate the influence of cobalt-chromium alloy and silver-palladium alloy as the materials of inner crown on periodontal tissue.
METHODS: Totally 189 clinical diseased teeth from 75 patients were chosen in this study. 106 teeth were repaired with cobalt-chromium alloy porcelain crown, and 83 were repaired with silver-palladium alloy porcelain crown. The changes in periodontal sulcus bleeding index and amount of gingival crevicular fluid were observed. Interleukin-1 beta, tumor necrosis factor alpha and the positive rates of Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans, Tannerella forsythia in the gingival crevicular fluid were detected.
RESULTS AND CONCLUSION: In the cobalt-chromium alloy porcelain crown group, there were significant differences in periodontal sulcus bleeding index, the amount of gingival crevicular fluid, interleukin-1 beta, and tumor necrosis factor alpha as well as the positive rates of Porphyromonas gingivalis and Tannerella forsythia in the gingival crevicular fluid prior to and 12 months post-restoration   (P < 0.05), while there was no significant difference in the positive rate of Actinobacillus actinomycetemcomitans (P > 0.05). In the silver-palladium alloy porcelain crown group, there were significant differences in periodontal sulcus bleeding index and the amount of gingival crevicular fluid    (P < 0.05), but no differences in interleukin-1 beta, tumor necrosis factor alpha and the positive rates of Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans and Tannerella forsythia in the gingival crevicular fluid prior to and 12 months post-restoration (P > 0.05). The cobalt-chromium alloy porcelain crown may have an adverse effect on periodontal tissue to a certain degree, while the silver-palladium alloy is an ideal substrate material of porcelain fused to metal crown.

Key words: biomaterials, tissue-engineered oral materials, porcelain-fused-to-metal crown, cobalt-chromium alloy, silver-palladium alloy, periodontal index, periodontopathic bacteria, provincial grants-supported paper

CLC Number: