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The importance of the posterior joint space for functional mandibular movements: A laboratory cross-sectional study
BACKGROUND: The search for the ideal, healthy and reproducible position of the condyles is of utmost importance for dental diagnosis and treatment. Thus, the objective of this laboratory cross-sectional study was to verify the relationship between the posterior joint space and the mandibular lateral...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medicina Oral S.L.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5899807/ https://www.ncbi.nlm.nih.gov/pubmed/29670717 http://dx.doi.org/10.4317/jced.54168 |
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author | Cordeiro, Cláudia-da Costa Pozza, Daniel-Humberto Tamaki, Tadachi Guimarães, Antônio-Sérgio |
author_facet | Cordeiro, Cláudia-da Costa Pozza, Daniel-Humberto Tamaki, Tadachi Guimarães, Antônio-Sérgio |
author_sort | Cordeiro, Cláudia-da Costa |
collection | PubMed |
description | BACKGROUND: The search for the ideal, healthy and reproducible position of the condyles is of utmost importance for dental diagnosis and treatment. Thus, the objective of this laboratory cross-sectional study was to verify the relationship between the posterior joint space and the mandibular lateral movements. MATERIAL AND METHODS: Dental casts from 15 women and 15 men with normal mastication, 28 natural teeth and no history of temporomandibular disorders or pain, were fabricated and mounted on a fully adjustable articulator. From the maximum intercuspal position, condylar displacement was evaluated and measured on the working and nonworking sides during mandibular lateral movement, both to the right and left sides. RESULTS: The correlation between the measures of interest was assessed with the Pearson correlation coefficient (α=.05). Condylar displacement on the working side and nonworking side condyle was 0.88±0.71 mm and 3.57±1.11 mm (right mandibular lateral movement); and 0.91±0.58 mm and 3.51±0.78mm (left mandibular lateral movement), respectively. No significant correlation in the condylar displacement between the working side condyles on the right and on the left sides was observed (r=.22; P=.248). The condylar poles of the articulator moved posteriorly, simulating the functional movements of the mandible during mastication. In all cases, condylar displacement during mandibular lateral movement both to the right and left occurred posteriorly on the working side condyle. CONCLUSIONS: The condylar poles of the articulator moved posteriorly simulating the functional movements of the mandible during mastication. Moreover, left and right working condyles may require slightly different spaces to function, suggesting minor anatomical asymmetries. Key words:Mastication, dental occlusion, prosthodontics. |
format | Online Article Text |
id | pubmed-5899807 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Medicina Oral S.L. |
record_format | MEDLINE/PubMed |
spelling | pubmed-58998072018-04-18 The importance of the posterior joint space for functional mandibular movements: A laboratory cross-sectional study Cordeiro, Cláudia-da Costa Pozza, Daniel-Humberto Tamaki, Tadachi Guimarães, Antônio-Sérgio J Clin Exp Dent Research BACKGROUND: The search for the ideal, healthy and reproducible position of the condyles is of utmost importance for dental diagnosis and treatment. Thus, the objective of this laboratory cross-sectional study was to verify the relationship between the posterior joint space and the mandibular lateral movements. MATERIAL AND METHODS: Dental casts from 15 women and 15 men with normal mastication, 28 natural teeth and no history of temporomandibular disorders or pain, were fabricated and mounted on a fully adjustable articulator. From the maximum intercuspal position, condylar displacement was evaluated and measured on the working and nonworking sides during mandibular lateral movement, both to the right and left sides. RESULTS: The correlation between the measures of interest was assessed with the Pearson correlation coefficient (α=.05). Condylar displacement on the working side and nonworking side condyle was 0.88±0.71 mm and 3.57±1.11 mm (right mandibular lateral movement); and 0.91±0.58 mm and 3.51±0.78mm (left mandibular lateral movement), respectively. No significant correlation in the condylar displacement between the working side condyles on the right and on the left sides was observed (r=.22; P=.248). The condylar poles of the articulator moved posteriorly, simulating the functional movements of the mandible during mastication. In all cases, condylar displacement during mandibular lateral movement both to the right and left occurred posteriorly on the working side condyle. CONCLUSIONS: The condylar poles of the articulator moved posteriorly simulating the functional movements of the mandible during mastication. Moreover, left and right working condyles may require slightly different spaces to function, suggesting minor anatomical asymmetries. Key words:Mastication, dental occlusion, prosthodontics. Medicina Oral S.L. 2018-01-01 /pmc/articles/PMC5899807/ /pubmed/29670717 http://dx.doi.org/10.4317/jced.54168 Text en Copyright: © 2018 Medicina Oral S.L. http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Cordeiro, Cláudia-da Costa Pozza, Daniel-Humberto Tamaki, Tadachi Guimarães, Antônio-Sérgio The importance of the posterior joint space for functional mandibular movements: A laboratory cross-sectional study |
title | The importance of the posterior joint space for functional
mandibular movements: A laboratory cross-sectional study |
title_full | The importance of the posterior joint space for functional
mandibular movements: A laboratory cross-sectional study |
title_fullStr | The importance of the posterior joint space for functional
mandibular movements: A laboratory cross-sectional study |
title_full_unstemmed | The importance of the posterior joint space for functional
mandibular movements: A laboratory cross-sectional study |
title_short | The importance of the posterior joint space for functional
mandibular movements: A laboratory cross-sectional study |
title_sort | importance of the posterior joint space for functional
mandibular movements: a laboratory cross-sectional study |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5899807/ https://www.ncbi.nlm.nih.gov/pubmed/29670717 http://dx.doi.org/10.4317/jced.54168 |
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