Objective: The aim of this study was to evaluate whether vertical facial patterns influence maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity, and medial mandibular flexure (MMF).
Material And Methods: Seventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis: brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar region was bilaterally measured with a force transducer. The electromyographic activities of the masseter and anterior temporal muscles were recorded during maximal voluntary clenching. Medial mandibular flexure was calculated by subtracting the intermolar distance of maximum opening or protrusion from the distance in the rest position. The data were analyzed using ANOVA followed by Tukey's HSD test. The significance level was set at 5%.
Results: Data on maximum occlusal force showed that shorter faces had higher occlusal forces (P<0.0001). Brachyfacial subjects presented higher levels of masseter electromyographic activity and medial mandibular flexure, followed by the mesofacial and dolychofacial groups. Additionally, dolychofacial subjects showed significantly lower electromyographic temporalis activities (P<0.05).
Conclusion: Within the limitations of the study, it may be concluded that maximum occlusal force, masticatory muscle activity and medial mandibular flexure were influenced by the vertical facial pattern.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4223785 | PMC |
| http://dx.doi.org/10.1590/s1678-77572011005000008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A study to evaluate the influence of non-axial forces on tooth - a split mouth cross-sectional study.
J Adv Prosthodont
December 2024
Department of Prosthodontics and Crown & Bridge, AB Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University, Mangalore, India.
Purpose: Proper tooth alignment directs occlusal forces along the long axis, supporting optimal masticatory function and periodontal health. Deviations that lead to non-axial forces are common; however, teeth with such deviations often maintain optimal health. This study aims to assess various occlusal and periodontal parameters in teeth experiencing non-axial forces to better understand the underlying reasons and mechanisms that contribute to their maintained health status.
View Article and Find Full Text PDFWooden Plate Denture Reproduced Using Materials and Methods From 400 Years Ago.
Cureus
December 2024
Department of Oral and Maxillofacial Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, JPN.
This study aimed to reproduce a complete wooden plate denture, which was the first in the world to retain suction under negative pressure, using the same materials and methods from 400 years ago (i.e., the Edo period) to verify its masticatory performance.
View Article and Find Full Text PDFFinite model analysis of different anchorage sites for bone-supported facemask application in unilateral cleft lip and palate.
Am J Orthod Dentofacial Orthop
January 2025
Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. Electronic address:
Introduction: The objective of this study was to evaluate the effects of the miniplate application sites in the maxilla and the applied force vector changes during skeletally supported facemask application in adolescent patients with unilateral cleft lip and palate (UCLP) using finite element model (FEM) analysis.
Methods: A FEM was obtained from a cone-beam computed tomography image of a 12-year-old female patient with UCLP. Miniplates were placed on 3 different sites of the maxilla; 500 g of advancement force was applied bilaterally, parallel (0°), and downward (-30°) to the occlusal plane.
Interchangeability of Contemporary Semi-adjustable Articulators Used Over Time: An Study.
J Contemp Dent Pract
September 2024
Department of Preventive and Restorative Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States.
Aim: The purpose of this study is to investigate the interchangeability of newly acquired, short-term used, and long-term used semi-adjustable articulators.
Materials And Methods: Metal analogs of partially dentate maxillary and mandibular arches were mounted on twelve semi-adjustable Stratos 300 articulators, divided into three groups based on usage over time: New, short-term used (<2 years), long-term used (>2 years) articulators. Each articulator was calibrated according to manufacturer guidelines, ensuring consistency.
The Impact of an Orofacial Muscle Strengthening Program on Temporomandibular Muscles and on the Performance of Wind Instrumentalists.
J Oral Rehabil
January 2025
Coimbra Health School, Polytechnic University of Coimbra, Coimbra, Portugal.
Introduction: Playing a wind instrument is one of the most complex tasks for the musculoskeletal system.
Objective: Verify the effectiveness of a strengthening exercise programme on musical performance and the strength of the temporomandibular muscles.
Methods: The sample was 60 participants (36 men; 24 women), with a mean age of 24.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!