Macarena Rodríguez-Luengo; Valencia-Vicencio Isabel; Scarlett ac-Lean-Cerda; Sven Niklander-Ebensperger; Juan José Valenzuela & Patricio Meléndez-Rojas

SUMMARY: The sequence and timing of dental eruption are processes that can differ between different populations, with limited data available for the Chilean population. This study aimed to determine the eruption chronology and sequence of permanent dentition in a cohort of Chilean patients. This cross-sectional study analyzed 812 panoramic radiographs (PR) of children aged 5 to 15 years. Data were analyzed using descriptive statistics and the Kärber method. The Student's t-test was performed to determine statistical differences between variables (sex, jaw, right and left side). This study was approved by the Research and Ethics Committee of the Faculty of Dentistry at Andrés Bello University. Permanent tooth eruption occurred between 6.13 and 12.42 years, starting with the lower left first molar and ending with the upper right second molar. Mandibular teeth mostly erupted before their maxillary counterparts. Female sex showed earlier eruption ages than male sex. The maxillary eruption sequences were the same between both genres, while a difference was found in the canine- premolar area of the mandible. The observed eruption ages are similar to those described in other populations. A larger sample size is needed, including children from different regions of the country, to obtain a representative Chilean dental chronology table.

KEY WORDS: Dental eruption; Permanent dentition; Eruption chronology.

RODRÍGUEZ-LUENGO, M.; VALENCIA-VICENCIO, I.; MAC-LEAN-CERDA, S.; NIKLANDER-EBENSPERGER, S.; VALENZUELA, J.J. & MELÉNDEZ-ROJAS, P. Evaluation of chronology and eruption sequence of permanent dentition using panoramic radiography. Int. J. Morphol. 42(6):1481-1487, 2024.