Epidemiology of mid-buccal gingival recessions according to the 2018 Classification System in South America: Results from two population-based studies.

AIM: The aim of this investigation was to estimate the prevalence, severity and extent of mid-buccal gingival recessions (GRs; classified according to the 2018 Classification System) and to identify their risk indicators in the South American population. MATERIALS AND METHODS: Epidemiological data from two cross-sectional studies-performed on 1070 South American adolescents and 1456 Chilean adults-were obtained. All participants received a full-mouth periodontal examination by calibrated examiners. GR prevalence was defined as the presence of at least one mid-buccal GR ≥ 1 mm. GRs were also categorized into different recession types (RTs) according to the 2018 World Workshop Classification System. Analyses for RT risk indicators were also performed. All analyses were carried out at the participant level. RESULTS: The prevalence of mid-buccal GRs was 14.1% in South American adolescents and 90.9% in Chilean adults. In South American adolescents, the prevalence of RTs was 4.3% for RT1 GRs, 10.7% for RT2 GRs and 1.7% for RT3 GRs. In Chilean adults, the prevalence of RT1 GRs was 0.3%, while the prevalence of RT2 and RT3 GRs was 85.8% and 77.4%, respectively. Full-Mouth Bleeding Score (FMBS; <25%) was associated with the presence of RT1 GRs in adolescents. The risk indicators for RT2/RT3 GRs mainly overlapped with those for periodontitis. CONCLUSIONS: Mid-buccal GRs affected 14.1% of South American adolescents, whereas they affected most of the Chilean adult population (>90%). While RT1 GRs are more commonly observed in a non-representative cohort of South American adolescents (when compared to Chilean adults), the majority of Chilean adults exhibit RT2/RT3 GRs.

Causa de pérdida de dientes en la población adulta de 35-44 y de 65-74 años de edad, de la Región Metropolitana / Cause of teeth lossing in the adult population of 35-44 and of 65-74 years old of the Region Metropolitana

The aim of this study was to establish the principal cause of teeth lossing in the adult community aged between 35-44 and 65-74 in Santiago, Metropolitana Región. The clinical histories of the patients included in an investigation carried out in 8 communities of the Metropolitan Región, and in a private medical-dental center in the Tabancura and Ñuñoa communities were cheeked. The sample was of 1.096 individuals, with a total of 5.207 lossed teeth. Results: the 77,17 por ciento of the total extracted teeth were lost because of dental decay (p

Efectividad clormezanona y flunitrazepam en el tratamiento de niños de difícil manejo / Chlormezonone and flunitrazepan eficacy in the dental treatment with children of difficult handling

De un universo de 366 escolares del área urbana de Curacautín, IX Región, con edades que fluctúan entre los 3 y 5 años, se sesga una muestra de 46 niños utilizando una clasificación conductual, seleccionando así niños de difícil manejo. Se realiza una investigación de tipo doble ciego, utilizando una posología de las drogas: Clormezanona y Flunitrazepam, además de un placebo. La distribución de las dosis es de acuerdo al denominado tablero latino. Los resultados obtenidos indican que ambas drogas son efectivas, teniendo un éxito de un 90,6 por ciento con la Clormezanona y un 92,8 por ciento con el Flunitrazepam. Respecto al placebo, el éxito fue de 15 por ciento encontrándose un mayor porcentaje en la tercera medicación, posiblemente por una mejor predisposición psicológica del niño