Is there an association between skeletal asymmetry and tooth absence?
Identifieur interne : 000624 ( Pmc/Checkpoint ); précédent : 000623; suivant : 000625Is there an association between skeletal asymmetry and tooth absence?
Auteurs : Guilherme Thiesen [Brésil] ; Bruno Frazão Gribel [Brésil] ; Keila Cristina Rausch Pereira [Brésil] ; Maria Perpetua Mota Freitas [Brésil]Source :
- Dental Press Journal of Orthodontics [ 2176-9451 ] ; 2016.
Abstract
Facial skeletal asymmetry is commonly found in humans and its main characteristic is menton deviation. The literature suggests that occlusal and masticatory problems arising from tooth absence could be related to the development of such asymmetries.
The aim of this cross-sectional study was to estimate the prevalence of mandibular skeletal asymmetries and to investigate its association with posterior tooth absences.
Tomographic images of 952 individuals aged from 18 to 75 years old were used. Asymmetry was the analyzed outcome, and it was categorized into three groups according to gnathion displacement in relation to the midsagittal plane (relative symmetry, moderate asymmetry, and severe asymmetry). Patients were sorted by the presence of all posterior teeth, unilateral posterior tooth absence, or bilateral posterior tooth absence. Chi-square test with a significance level of 5% was used to verify the association between posterior tooth absence and asymmetry.
Results show relative symmetry present in 55.3% of the sample, as well as the prevalence of 27.3% for moderate mandibular asymmetry and 17.4% for severe asymmetry. Moderate and severe mandibular asymmetries occurred in a higher proportion in patients with unilateral posterior tooth absence. However, there was no statistically significant difference between the analyzed groups (
In this study, mandibular asymmetries did not present any association with the absence of teeth on the posterior area of the arch.
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DOI: 10.1590/2177-6709.21.4.073-079.oar
PubMed: 27653267
PubMed Central: 5029319
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Is there an association between skeletal asymmetry and tooth absence?</title><author><name sortKey="Thiesen, Guilherme" sort="Thiesen, Guilherme" uniqKey="Thiesen G" first="Guilherme" last="Thiesen">Guilherme Thiesen</name><affiliation wicri:level="2"><nlm:aff id="aff1">Professor of Orthodontics, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, Santa Catarina, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Orthodontics, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, Santa Catarina</wicri:regionArea><placeName><region type="state">Santa Catarina</region></placeName></affiliation></author><author><name sortKey="Gribel, Bruno Frazao" sort="Gribel, Bruno Frazao" uniqKey="Gribel B" first="Bruno Frazão" last="Gribel">Bruno Frazão Gribel</name><affiliation wicri:level="2"><nlm:aff id="aff2">MSc, Pontifícia Universidade Católica de Minas Gerais (PUC-MG), Belo Horizonte, MG, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>MSc, Pontifícia Universidade Católica de Minas Gerais (PUC-MG), Belo Horizonte, MG</wicri:regionArea><placeName><region type="state">Minas Gerais</region></placeName></affiliation></author><author><name sortKey="Pereira, Keila Cristina Rausch" sort="Pereira, Keila Cristina Rausch" uniqKey="Pereira K" first="Keila Cristina Rausch" last="Pereira">Keila Cristina Rausch Pereira</name><affiliation wicri:level="2"><nlm:aff id="aff3">Professor of Epidemiology, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, SC, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Epidemiology, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, SC</wicri:regionArea><placeName><region type="state">Santa Catarina</region></placeName></affiliation></author><author><name sortKey="Freitas, Maria Perpetua Mota" sort="Freitas, Maria Perpetua Mota" uniqKey="Freitas M" first="Maria Perpetua Mota" last="Freitas">Maria Perpetua Mota Freitas</name><affiliation wicri:level="2"><nlm:aff id="aff4">Professor of Orthodontics, Universidade Luterana do Brasil (ULBRA), Canoas, RS, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Orthodontics, Universidade Luterana do Brasil (ULBRA), Canoas, RS</wicri:regionArea><placeName><region type="state">Rio Grande do Sul</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">27653267</idno><idno type="pmc">5029319</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5029319</idno><idno type="RBID">PMC:5029319</idno><idno type="doi">10.1590/2177-6709.21.4.073-079.oar</idno><date when="2016">2016</date><idno type="wicri:Area/Pmc/Corpus">002C06</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002C06</idno><idno type="wicri:Area/Pmc/Curation">002C06</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002C06</idno><idno type="wicri:Area/Pmc/Checkpoint">000624</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000624</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Is there an association between skeletal asymmetry and tooth absence?</title><author><name sortKey="Thiesen, Guilherme" sort="Thiesen, Guilherme" uniqKey="Thiesen G" first="Guilherme" last="Thiesen">Guilherme Thiesen</name><affiliation wicri:level="2"><nlm:aff id="aff1">Professor of Orthodontics, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, Santa Catarina, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Orthodontics, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, Santa Catarina</wicri:regionArea><placeName><region type="state">Santa Catarina</region></placeName></affiliation></author><author><name sortKey="Gribel, Bruno Frazao" sort="Gribel, Bruno Frazao" uniqKey="Gribel B" first="Bruno Frazão" last="Gribel">Bruno Frazão Gribel</name><affiliation wicri:level="2"><nlm:aff id="aff2">MSc, Pontifícia Universidade Católica de Minas Gerais (PUC-MG), Belo Horizonte, MG, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>MSc, Pontifícia Universidade Católica de Minas Gerais (PUC-MG), Belo Horizonte, MG</wicri:regionArea><placeName><region type="state">Minas Gerais</region></placeName></affiliation></author><author><name sortKey="Pereira, Keila Cristina Rausch" sort="Pereira, Keila Cristina Rausch" uniqKey="Pereira K" first="Keila Cristina Rausch" last="Pereira">Keila Cristina Rausch Pereira</name><affiliation wicri:level="2"><nlm:aff id="aff3">Professor of Epidemiology, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, SC, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Epidemiology, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, SC</wicri:regionArea><placeName><region type="state">Santa Catarina</region></placeName></affiliation></author><author><name sortKey="Freitas, Maria Perpetua Mota" sort="Freitas, Maria Perpetua Mota" uniqKey="Freitas M" first="Maria Perpetua Mota" last="Freitas">Maria Perpetua Mota Freitas</name><affiliation wicri:level="2"><nlm:aff id="aff4">Professor of Orthodontics, Universidade Luterana do Brasil (ULBRA), Canoas, RS, Brazil.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Brésil</country><wicri:regionArea>Professor of Orthodontics, Universidade Luterana do Brasil (ULBRA), Canoas, RS</wicri:regionArea><placeName><region type="state">Rio Grande do Sul</region></placeName></affiliation></author></analytic><series><title level="j">Dental Press Journal of Orthodontics</title><idno type="ISSN">2176-9451</idno><idno type="eISSN">2177-6709</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>ABSTRACT</title><sec><title>Introduction:</title><p> Facial skeletal asymmetry is commonly found in humans and its main characteristic is menton deviation. The literature suggests that occlusal and masticatory problems arising from tooth absence could be related to the development of such asymmetries. </p></sec><sec><title>Objective:</title><p> The aim of this cross-sectional study was to estimate the prevalence of mandibular skeletal asymmetries and to investigate its association with posterior tooth absences. </p></sec><sec><title>Methods: </title><p>Tomographic images of 952 individuals aged from 18 to 75 years old were used. Asymmetry was the analyzed outcome, and it was categorized into three groups according to gnathion displacement in relation to the midsagittal plane (relative symmetry, moderate asymmetry, and severe asymmetry). Patients were sorted by the presence of all posterior teeth, unilateral posterior tooth absence, or bilateral posterior tooth absence. Chi-square test with a significance level of 5% was used to verify the association between posterior tooth absence and asymmetry. </p></sec><sec><title>Results:</title><p> Results show relative symmetry present in 55.3% of the sample, as well as the prevalence of 27.3% for moderate mandibular asymmetry and 17.4% for severe asymmetry. Moderate and severe mandibular asymmetries occurred in a higher proportion in patients with unilateral posterior tooth absence. However, there was no statistically significant difference between the analyzed groups (<italic>p</italic> = 0.691). </p></sec><sec><title>Conclusions: </title><p>In this study, mandibular asymmetries did not present any association with the absence of teeth on the posterior area of the arch. </p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Peck, S" uniqKey="Peck S">S Peck</name></author><author><name sortKey="Peck, L" uniqKey="Peck L">L Peck</name></author><author><name sortKey="Kataja, M" uniqKey="Kataja M">M. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Dental Press J Orthod</journal-id><journal-id journal-id-type="iso-abbrev">Dental Press J Orthod</journal-id><journal-id journal-id-type="publisher-id">dpjo</journal-id><journal-title-group><journal-title>Dental Press Journal of Orthodontics</journal-title></journal-title-group><issn pub-type="ppub">2176-9451</issn><issn pub-type="epub">2177-6709</issn><publisher><publisher-name>Dental Press International</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">27653267</article-id><article-id pub-id-type="pmc">5029319</article-id><article-id pub-id-type="doi">10.1590/2177-6709.21.4.073-079.oar</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Is there an association between skeletal asymmetry and tooth absence?</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Thiesen</surname><given-names>Guilherme</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Gribel</surname><given-names>Bruno Frazão</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Pereira</surname><given-names>Keila Cristina Rausch</given-names></name><xref ref-type="aff" rid="aff3"><sup>3</sup></xref></contrib><contrib contrib-type="author"><name><surname>Freitas</surname><given-names>Maria Perpetua Mota</given-names></name><xref ref-type="aff" rid="aff4"><sup>4</sup></xref></contrib></contrib-group><aff id="aff1"><label>1</label>Professor of Orthodontics, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, Santa Catarina, Brazil.</aff><aff id="aff2"><label>2</label>MSc, Pontifícia Universidade Católica de Minas Gerais (PUC-MG), Belo Horizonte, MG, Brazil.</aff><aff id="aff3"><label>3</label>Professor of Epidemiology, Universidade do Sul de Santa Catarina (UNISUL), Florianópolis, SC, Brazil.</aff><aff id="aff4"><label>4</label>Professor of Orthodontics, Universidade Luterana do Brasil (ULBRA), Canoas, RS, Brazil.</aff><author-notes><corresp id="c1">Contact address: Guilherme Thiesen Av. Madre Benvenuta, n. 1285, Bairro Santa Mônica 88035-001 - Florianópolis, SC, Brazil - E-mail: <email>thiesen.guilherme@gmail.com</email></corresp></author-notes><pub-date pub-type="epub-ppub"><season>Jul-Aug</season><year>2016</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"><season>Jul-Aug</season><year>2016</year></pub-date><volume>21</volume><issue>4</issue><fpage>73</fpage><lpage>79</lpage><history><date date-type="received"><day>10</day><month>9</month><year>2015</year></date><date date-type="accepted"><day>02</day><month>2</month><year>2016</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</license-p></license></permissions><abstract><title>ABSTRACT</title><sec><title>Introduction:</title><p> Facial skeletal asymmetry is commonly found in humans and its main characteristic is menton deviation. The literature suggests that occlusal and masticatory problems arising from tooth absence could be related to the development of such asymmetries. </p></sec><sec><title>Objective:</title><p> The aim of this cross-sectional study was to estimate the prevalence of mandibular skeletal asymmetries and to investigate its association with posterior tooth absences. </p></sec><sec><title>Methods: </title><p>Tomographic images of 952 individuals aged from 18 to 75 years old were used. Asymmetry was the analyzed outcome, and it was categorized into three groups according to gnathion displacement in relation to the midsagittal plane (relative symmetry, moderate asymmetry, and severe asymmetry). Patients were sorted by the presence of all posterior teeth, unilateral posterior tooth absence, or bilateral posterior tooth absence. Chi-square test with a significance level of 5% was used to verify the association between posterior tooth absence and asymmetry. </p></sec><sec><title>Results:</title><p> Results show relative symmetry present in 55.3% of the sample, as well as the prevalence of 27.3% for moderate mandibular asymmetry and 17.4% for severe asymmetry. Moderate and severe mandibular asymmetries occurred in a higher proportion in patients with unilateral posterior tooth absence. However, there was no statistically significant difference between the analyzed groups (<italic>p</italic> = 0.691). </p></sec><sec><title>Conclusions: </title><p>In this study, mandibular asymmetries did not present any association with the absence of teeth on the posterior area of the arch. </p></sec></abstract><trans-abstract xml:lang="pt"><title>RESUMO</title><sec><title>Introdução:</title><p> a assimetria esquelética facial é comum em humanos, sendo o desvio do mento sua principal característica. É sugerido, na literatura, que problemas oclusais e mastigatórios advindos das ausências dentárias teriam relação com o desenvolvimento dessas assimetrias. </p></sec><sec><title>Objetivo:</title><p> o objetivo deste estudo transversal foi estimar a prevalência de assimetrias esqueléticas mandibulares e investigar sua associação com as ausências dentárias posteriores. </p></sec><sec><title>Métodos:</title><p> foram utilizadas imagens tomográficas de 952 indivíduos, com idade entre 18 e 75 anos. A assimetria foi o desfecho analisado, sendo categorizada em três grupos, de acordo com o desvio do gnátio em relação ao plano sagital mediano: simetria relativa, assimetria moderada e assimetria severa. Os indivíduos foram agrupados segundo a presença de todos os dentes posteriores, ausência dentária posterior unilateral ou ausência dentária posterior bilateral. Para verificar a associação entre a ausência dentária posterior e a assimetria, foi utilizado o teste Χ<sup>2</sup>, ao nível de significância de 5%. </p></sec><sec><title>Resultados:</title><p> os resultados mostraram que a simetria relativa esteve presente em 55,3% da amostra, bem como uma prevalência de 27,3% para a assimetria mandibular moderada e 17,4% para assimetria severa. As assimetrias mandibulares moderada e severa ocorreram em maior proporção nos indivíduos com ausência dentária posterior unilateral; entretanto, não houve diferença estatisticamente significativa entre os grupos (<italic>p</italic> = 0,691). </p></sec><sec><title>Conclusões:</title><p>nesse estudo, as assimetrias mandibulares em adultos não apresentaram associação com a ausência de dentes na região posterior da arcada dentária.</p></sec></trans-abstract><kwd-group><title>Keywords:</title><kwd>Facial asymmetry</kwd><kwd>Tooth loss</kwd><kwd>Epidemiology</kwd><kwd>Orthodontics</kwd></kwd-group><counts><fig-count count="2"></fig-count><table-count count="3"></table-count><equation-count count="0"></equation-count><ref-count count="32"></ref-count><page-count count="7"></page-count></counts></article-meta></front></pmc><affiliations><list><country><li>Brésil</li></country><region><li>Minas Gerais</li><li>Rio Grande do Sul</li><li>Santa Catarina</li></region></list><tree><country name="Brésil"><region name="Santa Catarina"><name sortKey="Thiesen, Guilherme" sort="Thiesen, Guilherme" uniqKey="Thiesen G" first="Guilherme" last="Thiesen">Guilherme Thiesen</name></region><name sortKey="Freitas, Maria Perpetua Mota" sort="Freitas, Maria Perpetua Mota" uniqKey="Freitas M" first="Maria Perpetua Mota" last="Freitas">Maria Perpetua Mota Freitas</name><name sortKey="Gribel, Bruno Frazao" sort="Gribel, Bruno Frazao" uniqKey="Gribel B" first="Bruno Frazão" last="Gribel">Bruno Frazão Gribel</name><name sortKey="Pereira, Keila Cristina Rausch" sort="Pereira, Keila Cristina Rausch" uniqKey="Pereira K" first="Keila Cristina Rausch" last="Pereira">Keila Cristina Rausch Pereira</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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