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Prevalence of periapical lesions, root canal treatments and restorations in teeth adjacent to implant- or toothsupported crowns
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Aim: To describe the prevalence of periapical lesions, root canal treatments and
coronal restorations on teeth adjacent to either implant- or natural tooth-supported
crowns using cone-beam computed tomography (CBCT) assessment compared to
nonadjacent teeth.
Methodology: A total of 1249 CBCT volumes were screened by five pre-calibrated
observers in 11 health centres. A step-by-step screening protocol was implemented
and reviewed every 3 months, and mandatory setting characteristics were established
for all CBCT scans using dedicated visualization software. Intra- and inter-rater reliability tests were conducted. The prevalence of periapical lesions, root canal treatments and coronalrestorations wasrecorded on both teeth adjacent and nonadjacent
to implant- (predictor 1) or natural tooth-supported crowns (predictor 2). A binary
logistic model (Generalizing Estimating Equations test) was used to verify whether
the prevalence of periapical lesion, root canal filling and the tooth restorative status
are altered when the assessed tooth is adjacent or not to an implant-supported crown
(predictor 1); or to a natural tooth-supported crown (predictor 2). Odds ratio and
confidence intervals for the dependent variables at both predictors were obtained.
The significance level was set at .05.
Results: A global sample of 22 899 teeth was included. Compared to nonadjacent
teeth, the prevalence of periapical lesion, root canals treatments and restorative procedures when adjacent to implant-supported crowns was 10.7%, 19.6% and 22.9%
higher, respectively, and when adjacent to tooth-supported crowns was 19.3%, 35.6%
and 37.4% higher respectively. These results were significant only for variables root
canal filling and coronal restoration (p < .0001). Odds ratio to present root canal
treatment is 2.57 times higher (CI 1.95–3.39, p = .0001) when the tooth is adjacent to
implant-supported crown and 4.39 times (CI 3.49–5.53, p = .0001) when adjacent to
tooth-supported crown, whilst for restorative procedure, the odds are, respectively,
1.63 (CI 1.29–2.06, p = .0001) and 2.30 (CI 1.92–2.76, p = .0001).
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Baruwa A, Martins JNR, Pereira B, Meirinhos J, Ordinola-Zapata R, Souza EM, Ginjeira A. Prevalence of periapical lesions, root canal treatments and restorations in teeth adjacent to implant- or tooth-supported crowns: a multi-centre cross sectional study. Int Endod J 2022;55:30–37.