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Chewing time and chewing strokes in different dentofacial deformities
Melissa Nara de Carvalho Picinato-Pirola1, Francisco Veríssimo de Mello-Filho, Luciana Vitaliano Voi Trawitzki
1Department of Oftalmology, Otorhinolaryngology and Head and Neck Surgery, School of Medicine, Universidade de São Paulo, São Paulo, SP, Brazil. melissapicinato@yahoo.com.br
Jornal Da Sociedade Brasileira De Fonoaudiologia
|July 27, 2012
Summary
Dentofacial deformities do not alter chewing duration or stroke count. However, individuals with class III deformities exhibit less consistent chewing patterns compared to controls and class II deformities.
Area of Science:
- Dentofacial Orthopedics
- Masticatory Function Analysis
- Biomechanics of Chewing
Background:
- Mastication is a complex process involving jaw movements and muscle coordination.
- Dentofacial deformities can potentially alter the mechanics of chewing.
- Understanding chewing patterns in individuals with deformities is crucial for functional assessment.
Purpose of the Study:
- To investigate the impact of dentofacial deformities on chewing behavior.
- To compare chewing stroke count and duration in individuals with Class II and Class III deformities versus controls.
- To assess the consistency of chewing patterns in different dentofacial groups.
Main Methods:
- Study included 15 patients with Class II (GII), 15 with Class III (GIII) deformities, and 15 healthy controls (CG).
- Participants performed habitual free mastication of a cornstarch cookie.
- Chewing stroke count (mandibular movements) and time per bite were recorded and analyzed for consistency.
Main Results:
- No significant differences were found in the number of chewing strokes or chewing time between the GII, GIII, and CG groups.
- Consistency of stroke count between two chewing instances was observed in CG and GII, but not in GIII.
- Chewing time consistency was high in CG, moderate in GII, and low (discordant) in GIII.
Conclusions:
- Dentofacial deformities do not appear to influence the overall number of chewing strokes or the duration of chewing.
- Individuals with Class III dentofacial deformities demonstrate less uniformity in their chewing stroke count and time compared to other groups.
- Chewing pattern consistency may be affected by specific types of dentofacial deformities, particularly Class III.
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