Distribution of oral and maxillofacial lesions in pediatric patients from a brazilian southeastern population

Summary Objectives Oral lesions affecting infants account for approximately 10% of all samples from diagnostic services and studies investigating the distribution of these lesions in pediatrics from different geographic areas are desired to improve the diagnostic knowledge of clinicians. Therefore, the aim of this study is t o describe the distribution of oral lesions in a southeastern Brazilian population. Methods The oral pathology files of the University of Campinas was retrospectively reviewed for all cases diagnosed from 2000 to 2014 affecting patients 16-years-old and younger. Data on gender and diagnosis were retrieved from patients’ oral pathology reports and included in a Microsoft Excel® database. Results Out of 34,138 cases, 2,539 affected pediatric patients (7.4%) with a higher incidence in those with 13 to 16 years-old. Salivary gland disease was the most common group of lesions (37.1%), followed by mucosal pathology (13.6%) and odontogenic cysts (11.3%). Mucous extravasation cyst was the most common lesion (36.3%), followed by fibrous hyperplasia (5.6%) and dental follicle (5.2%). Dental lesions were uncommon (7.9%) and malignancies rare (0.4%). Conclusions Our results were similar to previous studies and the small differences observed were more likely result of methodological variability and characteristics of the service of origin from where samples were collected.