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Effect of prosthetic restorations and root canal fillings on periapical health in a selected patient group

Abstract

Aims To examine the effect of the quality of root canal fillings and prosthetic restorations on the frequency of apical periodontitis (AP).

Methodology A total of 200 radiographs of 1,098 teeth with indirect restorations were selected. Each case was documented by age, sex, tooth location, tooth type, restoration type and presence of root canal treatment (RCT). Teeth were categorised as healthy or diseased considering periapical health. The quality of RCT and prosthetic restorations was categorised by radiographic and clinical examinations. Data were analysed using chi-squared test and logistic regression.

Results Inadequate prosthetic restorations were found to be less healthy than the adequate ones. Statistical significance was found in teeth with RCT, which had a higher rate of AP (15.8%). Root-filled teeth categorised as inadequately treated (24.1%) were significantly unhealthier than the adequately root-filled teeth. Teeth with inadequate prosthetic restorations and RCT had an increase in AP risk of 6.41 and 20.74 times, respectively (p <0.05).

Conclusions Results showed that AP risk was increased by both inadequate RCT and prosthetic restorations. Quality of RCT significantly affected periapical health more than the quality of prosthetic restorations. Not only radiographic but also clinical examination of restorations is required for successful evaluation.

Key points

  • Periapical health depends on both the quality of root canal fillings and prosthetic restorations.

  • Highlights that root canal filling quality has a greater effect on periapical health than prosthetic restoration quality.

  • Highlights the importance of clinical examination in addition to radiographic examination in the evaluation of prosthetic restoration quality.

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Correspondence to Sema Sönmez Kaplan.

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Sezgin, G., Kaplan, S., Kaplan, T. et al. Effect of prosthetic restorations and root canal fillings on periapical health in a selected patient group. Br Dent J 231, 127–132 (2021). https://doi.org/10.1038/s41415-021-3221-7

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