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Influence of occlusion guidance on masticatory performance and ability in complete denture wearers

Grant number: 15/09873-2
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): November 01, 2015
Effective date (End): February 28, 2017
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Ana Carolina Pero
Grantee:Priscila Mattos Scavassin
Host Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil


The rehabilitation treatment with conventional complete dentures aims to restore chewing, phonetics and swallowing, as well as providing aesthetic and comfort. The success of this treatment should combine patient satisfaction with clinical and laboratory steps insightful and well executed, especially those that involve the impression procedures, registration of intermaxillary relations and choice of occlusal scheme. Currently, the most widespread occlusal scheme for complete dentures is the bilateral balanced occlusion (OBB), however, the canines guided occlusion (DC) represents a possible alternative on complete dentures fabrication. More randomized controlled trials to evaluate the effect of occlusal squemes regarding mastication are still needed. Objective: The aim of this study is to analyze the influence of occlusion guidance on masticatory performance and ability in complete denture wearers, by means of a cross-over study. Methodology: Edentulous individuals wearing conventional complete dentures will be invited for participation in this study (n= 40). After a period of adaptation to the new conventional complete dentures, will be divided into two study sequences where on alternate and sequential periods of 30 days each, will be assigned to two types of proposed protocols: Sequence 1 (bilateral balanced occlusion - OBB, followed by canines guidance - DC), and Sequence 2 (DC followed by OBB). Evaluations of masticatory performance and ability will be conducted by the sieves method and application specific questionnaire based on visual analogue scale (VAS), respectively, in different moments: 30 days after the adaptation period with the new dentures (Evaluation 1), and 60 days after the adaptation period with the new dentures (Evaluation 2). Masticatory performance will be evaluated by the sieves method using almonds, and expressed in percentage. The responses to the masticatory ability inventory will be measured from the VAS, and a mean value will be obatained for each group, expressed in millimeters. Data will be analyzed statistically with a significance level of 5%, by means of the IBM SPSS Statistics, (version 19.0), using appropriate test according to the adherence to normality.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PERO, ANA CAROLINA; SCAVASSIN, PRISCILA M.; POLICASTRO, VIVIAN B.; DE OLIVEIRA JUNIOR, NORBERTO M.; MENDOZA MARIN, DANNY OMAR; DIAS DA SILVA, MARCELA DANTAS; CASSIANO, ANA FLAVIA B.; SANTANA, THAIS DE SOUSA; COMPAGNONI, MARCO ANTONIO. Masticatory function in complete denture wearers varying degree of mandibular bone resorption and occlusion concept: canine-guided occlusion versus bilateral balanced occlusion in a cross-over trial. JOURNAL OF PROSTHODONTIC RESEARCH, v. 63, n. 4, p. 421-427, . (15/10663-2, 15/09873-2)

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