Influence of cusps angulation on masticatory performance of complete denture wearers with resorbed ridges

• Grant number: 19/25743-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2020
• End date: June 30, 2021
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Principal Investigator: Ana Carolina Pero
• Grantee: Pedro Ewerton de Mello Pires
• Host Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

Resorption of the residual ridge is a very common physiological process in complete denture wearers, compromising its stability and retention, especially of the mandibular dentures. Monoplane occlusion may favor the stability and retention of these dentures, but there is no evidence for their functional performance in individuals with resorbed ridges. The aim of this study will be to evaluate the masticatory performance of completely edentulous individuals with resorbed mandibular ridges, users of conventional complete dentures with different cusp heights: non-anatomical teeth 0º and semianatomic teeth 22º. Participants (n = 30) should have resorbed mandibular ridges radiographically examined, normal salivation, at least 1 year of edentulism, need for replacement of complete dentures and absence of debilitating systemic diseases as well as signs / symptoms of temporomandibular disorders. Participants will receive a new set of complete dentures, which were previously randomly assigned to one of two groups (n = 15), according to the occlusal scheme: 0º or 22º. The study will begin after the adaptation period with the new dentures (pre-test phase). The evaluations will be performed at three (T1) and six (T2) months from the pre-test phase. Chewing performance will be evaluated by means of the sieve method using almonds as test food. Data will be tabulated and appropriate statistical tests will be applied according to adherence to normality and homoscedasticity (± = .05).