Volume 20 Issue 1
Jan.  2022
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Article Navigation >  Chinese Journal of General Practice  > 2022  >  20(1): 31-34
YU Jian, XU Guo-chao, XIAO Jia-ling. Effect evaluation of ceramic onlays on endodontically treated molars restored with partical and all coverage[J]. Chinese Journal of General Practice, 2022, 20(1): 31-34. doi: 10.16766/j.cnki.issn.1674-4152.002269
Citation: YU Jian, XU Guo-chao, XIAO Jia-ling. Effect evaluation of ceramic onlays on endodontically treated molars restored with partical and all coverage[J]. Chinese Journal of General Practice, 2022, 20(1): 31-34. doi: 10.16766/j.cnki.issn.1674-4152.002269
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Effect evaluation of ceramic onlays on endodontically treated molars restored with partical and all coverage

doi: 10.16766/j.cnki.issn.1674-4152.002269

  • Department of Stomatology, Zhejiang Hospital, Hangzhou, Zhejiang 310030, China

Funds:

 LQ20H140003

  • Received Date: 2020-05-02
    Available Online: 2022-03-03
    Abstract
  •   Objective  The aim of the study is to compare the clinical effect of ceramic onlays with two different coverages to restore root canal treated molars.  Methods  The sample of 105 endodontically treated molars restored by ceramic onlays were collected from 92 patients seen in Department of Stomatology, Zhejiang Hospital from December 2016 to December 2017. The 105 molars were randomly divided into partial coverage group and all coverage group by tossing a coin. After complete restoration procedures, the molars were evaluated in accordance with the modified United States Public Health Service criteria at 6-month, 12-month, 18-month and 24-month recalls. The statistical analyses of within group and between group changing over time differences of each criteria were carried out using Generalized Linear Mixed Model(GLMM). The between group differences at the same time point recall were analyzed by chi-square test. Results For within group comparison, over time, all coverage (AC) group demonstrated significant decreased of gingiva health rate(P < 0.05); partial coverage (PC) group showed dramatic decrease scale in terms of restoration integrity, marginal adaptation, tooth integrity and secondary caries(all P < 0.05). As for between group comparison, AC and PC groups showed significant differences in tooth integrity and secondary caries at 24 month after onlay insertion(all P < 0.05). The coverage types didn't affect other clinical effect criteria at all these time points (all P > 0.05). In addition, there is no interaction between time and group(all P > 0.05).  Conclusion  Statistical analysis showed that the all coverage onlay has good comprehensive performance. It is a better choice to restore mild to moderate molar defect after root canal therapy. It is reasonable to expect that all coverage onlay will improve the restoration effect on endodontically treated molars in a long-term clinical use when compared to partial coverage onlay.

     

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