ReviewJournal of clinical and experimental dentistry2026
Prevalence of impacted and supernumerary teeth among young Peruvians: A large cross-sectional study.
Review in Journal of clinical and experimental dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: To determine the prevalence of impacted teeth (IT) and supernumerary teeth (ST) in young Peruvian individuals aged 13 to 20 years based on panoramic radiographs taken between 2020 and 2025. Materials and. Material and Methods: This cross-sectional and retrospective study complied with all ethical standards. Digital panoramic radiographs from two radiological centers in Peru (n = 7,903) were evaluated to analyze and detect the presence of impacted and supernumerary teeth. All DPRs were assessed by two previously trained and calibrated investigators. Chi-square tests and binary logistic regression analyses were used, with a significance level set at p < 0.05. Results: The study found a prevalence of impacted teeth (IT) of 58.7%, with no significant difference between sexes (p = 0.361). The prevalence of supernumerary teeth (ST) was 3.9% (males 5.5%, females 2.5%; p < 0.001). Single ST were observed in 68.9% of cases, with no sex-related differences (p = 0.195). No maxillary or mandibular predominance was found (p = 0.717); however, a higher frequency of ST was recorded in the posterior region (56.1%, p = 0.088) and of the supplemental type (51.9%), with no differences by sex (p = 0.185). Binary logistic regression analysis revealed a higher risk of ST in males (B = 2.28, p < 0.001), with no influence of age (p = 0.200). The most frequently impacted teeth were third molars (n = 3,579), followed by canines (n = 1,101) and incisors (n = 60). Conclusions: The prevalence of impacted teeth in young Peruvian patients was within the high range reported in the literature, with no significant differences by sex or age. Third molars were the most commonly impacted teeth, followed by canines. The prevalence of supernumerary teeth was within the average range reported in previous studies, being higher in males, predominantly single and located in the posterior region, with no age-related effect. Periodic radiographic evaluations during adolescence are recommended for early detection, as well as further research in young patients during the critical period of completion of permanent dental maturation.
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