Effect of hyposalivation on mastication and mandibular movements during speech

Author(s)

Farias Gomes, Simone Guimaraes ; Del Bel Cury, Altair Antoninha ; Matheus Rodrigues Garcia, Renata Cunha

• Document type: Journal article
• Source: BRAZILIAN ORAL RESEARCH; v. 25, n. 4, p. 6-pg., 2011-07-01.

Abstract

The aim of this study was to evaluate whether patients with hyposalivation present damaged mastication or mandibular movements during speech. Forty subjects composed 2 groups: control and hyposalivation. Masticatory performance was assessed with a silicon-based artificial material and a 10-sieve method. Mandibular movements during speech were observed with a 3D jaw-tracking device. Data were analyzed with Student's t-test or the Mann-Whitney method (P < 0.05). The masticatory performance (mm) of control and hyposalivation were 4.40 +/- 0.62 and 4.74 +/- 1.34, respectively. Outcomes for speech movements (mm) were as follows: maximum vertical opening amplitude (10.8 +/- 4.2; 9.9 +/- 2.7) and displacements to the right (1.0 +/- 0.8; 0.5 +/- 0.6), left (1.8 +/- 1.4; 2.3 +/- 1.2), or anterior-posterior (2.8 +/- 1.1; 2.9 +/- 1.0) for control and hyposalivation, respectively. No statistical difference was found between groups for any variable. The results indicated that hyposalivation did not affect masticatory performance or mandibular movements during speech. ClinicalTrials.gov Identifier: NCT01020084. (AU)

• FAPESP's process: 05/03383-1 - Effect of salivary flow on masticatory efficiency and interocclusal distance during speech
• Grantee: Simone Guimarães Farias Gomes
• Support Opportunities: Scholarships in Brazil - Master