Risk factors for jaw osteoradionecrosis: a case control study.

There are divergences among studies regarding features associated to increased risk of osteoradionecrosis (ORN). Our objective was to identify factors that predispose to the development of ORN of the jaw. This was a retrospective, hospital-based, case-control study involving patients with head and neck cancer who had been treated with ≥ 60 Gy external radiotherapy (RT) to the jaw.

Head and neck manifestations of paracoccidioidomycosis: A retrospective study of histopathologically diagnosed cases in two medical centers in southern Brazil.

Background: Paracoccidoidomycosis (PCM) is a granulomatous systemic mycosis endemic in southern Brazil.

Objectives: Analyze the clinical and epidemiological characteristics of cases of PCM with head and neck manifestations in southern Brazil.

Material And Methods: Retrospective study of histopathologically diagnosed cases of PCM with head and neck manifestations referred to two medical centers in the municipality of Santa Cruz do Sul, state of Rio Grande do Sul, Brazil, during a 10-year period (2011-2020).

Factors associated with caries: a survey of students from southern Brazil.

Objective: To describe the factors associated with dental caries among students from Santa Cruz do Sul, Rio Grande do Sul, Brazil.

Methods: A cross-sectional study was conducted in a random sample of 623 students of both genders, aged 10-17 years old. Tooth decay was performed using the index of the World Health Organization (1997), DMFT (permanent dentition) that expresses the sum of decayed, missing and filled teeth per person.