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Comparative analysis between mandibular positions in centric relation and maximum intercuspation by cone beam computed tomography (CONE-BEAM)

Identifieur interne : 002F82 ( Pmc/Curation ); précédent : 002F81; suivant : 002F83

Comparative analysis between mandibular positions in centric relation and maximum intercuspation by cone beam computed tomography (CONE-BEAM)

Auteurs : Amanda De Freitas Ferreira [Brésil] ; João César Guimarães Henriques [Brésil] ; Guilherme Araújo Almeida [Brésil] ; Asbel Rodrigues Machado [Brésil] ; Naila Aparecida De Godoi Machado [Brésil] ; Alfredo Júlio Fernandes [Brésil]

Source :

RBID : PMC:5467372

Abstract

ABSTRACT

This research consisted of a quantitative assessment, and aimed to measure the possible discrepancies between the maxillomandibular positions for centric relation (CR) and maximum intercuspation (MI), using computed tomography volumetric cone beam (cone beam method). The sample of the study consisted of 10 asymptomatic young adult patients divided into two types of standard occlusion: normal occlusion and Angle Class I occlusion. In order to obtain the centric relation, a JIG device and mandible manipulation were used to deprogram the habitual conditions of the jaw. The evaluations were conducted in both frontal and lateral tomographic images, showing the condyle/articular fossa relation. The images were processed in the software included in the NewTom 3G device (QR NNT software version 2.00), and 8 tomographic images were obtained per patient, four laterally and four frontally exhibiting the TMA’s (in CR and MI, on both sides, right and left). By means of tools included in another software, linear and angular measurements were performed and statistically analyzed by student t test. According to the methodology and the analysis performed in asymptomatic patients, it was not possible to detect statistically significant differences between the positions of centric relation and maximum intercuspation. However, the resources of cone beam tomography are of extreme relevance to the completion of further studies that use heterogeneous groups of samples in order to compare the results.


Url:
DOI: 10.1590/S1678-77572009000700006
PubMed: 21499652
PubMed Central: 5467372

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PMC:5467372

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<p>This research consisted of a quantitative assessment, and aimed to measure the possible discrepancies between the maxillomandibular positions for centric relation (CR) and maximum intercuspation (MI), using computed tomography volumetric cone beam (cone beam method). The sample of the study consisted of 10 asymptomatic young adult patients divided into two types of standard occlusion: normal occlusion and Angle Class I occlusion. In order to obtain the centric relation, a JIG device and mandible manipulation were used to deprogram the habitual conditions of the jaw. The evaluations were conducted in both frontal and lateral tomographic images, showing the condyle/articular fossa relation. The images were processed in the software included in the NewTom 3G device (QR NNT software version 2.00), and 8 tomographic images were obtained per patient, four laterally and four frontally exhibiting the TMA’s (in CR and MI, on both sides, right and left). By means of tools included in another software, linear and angular measurements were performed and statistically analyzed by student t test. According to the methodology and the analysis performed in asymptomatic patients, it was not possible to detect statistically significant differences between the positions of centric relation and maximum intercuspation. However, the resources of cone beam tomography are of extreme relevance to the completion of further studies that use heterogeneous groups of samples in order to compare the results.</p>
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<journal-id journal-id-type="nlm-ta">J Appl Oral Sci</journal-id>
<journal-id journal-id-type="iso-abbrev">J Appl Oral Sci</journal-id>
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<subject>Paper Presented at the: 22
<sup>nd</sup>
Academic Conference of the Bauru School of Dentistry “Dr. Waldyr Antonio Janson”</subject>
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<article-title>Comparative analysis between mandibular positions in centric relation and maximum intercuspation by cone beam computed tomography (CONE-BEAM)</article-title>
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<contrib contrib-type="author">
<name>
<surname>FERREIRA</surname>
<given-names>Amanda de Freitas</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>HENRIQUES</surname>
<given-names>João César Guimarães</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>ALMEIDA</surname>
<given-names>Guilherme Araújo</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>MACHADO</surname>
<given-names>Asbel Rodrigues</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>MACHADO</surname>
<given-names>Naila Aparecida de Godoi</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>FERNANDES</surname>
<given-names>Alfredo Júlio</given-names>
<suffix>NETO</suffix>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
<xref ref-type="corresp" rid="c1"></xref>
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<aff id="aff1">
<label>1</label>
Undergraduate student, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.</aff>
<aff id="aff2">
<label>2</label>
MSc, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.</aff>
<aff id="aff3">
<label>3</label>
PhD, Professor, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.</aff>
<aff id="aff4">
<label>4</label>
Graduate student, Dental School, Federal University of Alfenas, Alfenas, MG, Brazil.</aff>
<aff id="aff5">
<label>5</label>
Graduate student, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.</aff>
<aff id="aff6">
<label>6</label>
PhD, Professor, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.</aff>
<author-notes>
<corresp id="c1">
<bold>Corresponding address:</bold>
Prof. Dr. Alfredo Júlio Fernandes Neto - Av. Pará, 1720 - Campus Umuarama - Bl 2B, Sala 2B01 - 38400-902 - Uberlândia - MG -Phone:
<phone>(34) 3218-2222</phone>
- e-mail:
<email>alfredon@ufu.br</email>
</corresp>
</author-notes>
<pub-date pub-type="epub-ppub">
<year>2009</year>
</pub-date>
<pmc-comment>Fake ppub date generated by PMC from publisher pub-date/@pub-type='epub-ppub' </pmc-comment>
<pub-date pub-type="ppub">
<year>2009</year>
</pub-date>
<volume>17</volume>
<issue>spe</issue>
<fpage>27</fpage>
<lpage>34</lpage>
<history>
<date date-type="received">
<day>21</day>
<month>8</month>
<year>2009</year>
</date>
<date date-type="accepted">
<day>19</day>
<month>2</month>
<year>2010</year>
</date>
</history>
<permissions>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>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.</license-p>
</license>
</permissions>
<abstract>
<title>ABSTRACT</title>
<p>This research consisted of a quantitative assessment, and aimed to measure the possible discrepancies between the maxillomandibular positions for centric relation (CR) and maximum intercuspation (MI), using computed tomography volumetric cone beam (cone beam method). The sample of the study consisted of 10 asymptomatic young adult patients divided into two types of standard occlusion: normal occlusion and Angle Class I occlusion. In order to obtain the centric relation, a JIG device and mandible manipulation were used to deprogram the habitual conditions of the jaw. The evaluations were conducted in both frontal and lateral tomographic images, showing the condyle/articular fossa relation. The images were processed in the software included in the NewTom 3G device (QR NNT software version 2.00), and 8 tomographic images were obtained per patient, four laterally and four frontally exhibiting the TMA’s (in CR and MI, on both sides, right and left). By means of tools included in another software, linear and angular measurements were performed and statistically analyzed by student t test. According to the methodology and the analysis performed in asymptomatic patients, it was not possible to detect statistically significant differences between the positions of centric relation and maximum intercuspation. However, the resources of cone beam tomography are of extreme relevance to the completion of further studies that use heterogeneous groups of samples in order to compare the results.</p>
</abstract>
<kwd-group>
<title>Key words:</title>
<kwd>Computed tomography</kwd>
<kwd>Centric relation</kwd>
<kwd>Occlusion</kwd>
</kwd-group>
<counts>
<fig-count count="2"></fig-count>
<table-count count="4"></table-count>
<equation-count count="0"></equation-count>
<ref-count count="26"></ref-count>
<page-count count="8"></page-count>
</counts>
</article-meta>
</front>
</pmc>
</record>

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