Dental arch dimensions of adolescent Kuwaitis with untreated ideal occlusion: Variation and validity of proposed expansion indexes
Introduction The purposes of this study were to analyze the variations in dental arch dimensions of a large representative sample of adolescent Kuwaitis with untreated almost ideal occlusion and to test the validity of proposed expansion indexes and multivariate linear regression with inclusion of l...
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| Veröffentlicht in: | American journal of orthodontics and dentofacial orthopedics 2012-11, Vol.142 (5), p.635-644 |
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| container_title | American journal of orthodontics and dentofacial orthopedics |
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| creator | Rastegar-Lari, Tannaz Al-Azemi, Rashed Thalib, Lukman Årtun, Jon |
| description | Introduction The purposes of this study were to analyze the variations in dental arch dimensions of a large representative sample of adolescent Kuwaitis with untreated almost ideal occlusion and to test the validity of proposed expansion indexes and multivariate linear regression with inclusion of lateral and posteroanterior cephalometric parameters for estimation of dental arch width. Methods Study models and both lateral and posteroanterior cephalograms of 143 Kuwaitis, aged 13 to 14 years, clinically diagnosed with untreated almost ideal occlusion during screening of a population-based sample, were examined. Maxillary and mandibular arch dimensions were measured by using a digital caliper accurate to 0.01 mm, and cephalometric parameters were measured electronically. Results All dimensions were greater in boys than in girls ( P |
| doi_str_mv | 10.1016/j.ajodo.2012.05.018 |
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Methods Study models and both lateral and posteroanterior cephalograms of 143 Kuwaitis, aged 13 to 14 years, clinically diagnosed with untreated almost ideal occlusion during screening of a population-based sample, were examined. Maxillary and mandibular arch dimensions were measured by using a digital caliper accurate to 0.01 mm, and cephalometric parameters were measured electronically. Results All dimensions were greater in boys than in girls ( P <0.001) and demonstrated wide individual variations. Maxillary arch-width estimates according to 3 proposed expansion indexes differed from the actual dimensions ( P <0.001), with more than 60% of the dimensions having discrepancies greater than 1.0 mm and explained variances from 0.12 to 0.20. Multivariate linear regression with inclusion of cephalometric parameters provided better estimates, with explained variances from 0.29 to 0.44. Conclusions The tested expansion indexes provide poor estimates of maxillary arch widths, with low explained variances. Multivariate linear regression provides better estimates, with moderate explained variances.</description><identifier>ISSN: 0889-5406</identifier><identifier>EISSN: 1097-6752</identifier><identifier>DOI: 10.1016/j.ajodo.2012.05.018</identifier><identifier>PMID: 23116504</identifier><language>eng</language><publisher>New York, NY: Mosby, Inc</publisher><subject>Adolescent ; Arabs ; Biological and medical sciences ; Cephalometry ; Dental Arch - anatomy & histology ; Dental Occlusion, Centric ; Dentistry ; Female ; Humans ; Kuwait ; Linear Models ; Male ; Medical sciences ; Otorhinolaryngology. Stomatology ; Reference Standards ; Reference Values ; Reproducibility of Results ; Sex Characteristics</subject><ispartof>American journal of orthodontics and dentofacial orthopedics, 2012-11, Vol.142 (5), p.635-644</ispartof><rights>American Association of Orthodontists</rights><rights>2012 American Association of Orthodontists</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2012 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c444t-c3e0ded9d07a4c9131a62a1deb0e710cdbb31d45ba4e744ecd4c31428d69599f3</citedby><cites>FETCH-LOGICAL-c444t-c3e0ded9d07a4c9131a62a1deb0e710cdbb31d45ba4e744ecd4c31428d69599f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S088954061200710X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26673628$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23116504$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rastegar-Lari, Tannaz</creatorcontrib><creatorcontrib>Al-Azemi, Rashed</creatorcontrib><creatorcontrib>Thalib, Lukman</creatorcontrib><creatorcontrib>Årtun, Jon</creatorcontrib><title>Dental arch dimensions of adolescent Kuwaitis with untreated ideal occlusion: Variation and validity of proposed expansion indexes</title><title>American journal of orthodontics and dentofacial orthopedics</title><addtitle>Am J Orthod Dentofacial Orthop</addtitle><description>Introduction The purposes of this study were to analyze the variations in dental arch dimensions of a large representative sample of adolescent Kuwaitis with untreated almost ideal occlusion and to test the validity of proposed expansion indexes and multivariate linear regression with inclusion of lateral and posteroanterior cephalometric parameters for estimation of dental arch width. Methods Study models and both lateral and posteroanterior cephalograms of 143 Kuwaitis, aged 13 to 14 years, clinically diagnosed with untreated almost ideal occlusion during screening of a population-based sample, were examined. Maxillary and mandibular arch dimensions were measured by using a digital caliper accurate to 0.01 mm, and cephalometric parameters were measured electronically. Results All dimensions were greater in boys than in girls ( P <0.001) and demonstrated wide individual variations. Maxillary arch-width estimates according to 3 proposed expansion indexes differed from the actual dimensions ( P <0.001), with more than 60% of the dimensions having discrepancies greater than 1.0 mm and explained variances from 0.12 to 0.20. Multivariate linear regression with inclusion of cephalometric parameters provided better estimates, with explained variances from 0.29 to 0.44. Conclusions The tested expansion indexes provide poor estimates of maxillary arch widths, with low explained variances. Multivariate linear regression provides better estimates, with moderate explained variances.</description><subject>Adolescent</subject><subject>Arabs</subject><subject>Biological and medical sciences</subject><subject>Cephalometry</subject><subject>Dental Arch - anatomy & histology</subject><subject>Dental Occlusion, Centric</subject><subject>Dentistry</subject><subject>Female</subject><subject>Humans</subject><subject>Kuwait</subject><subject>Linear Models</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Otorhinolaryngology. Stomatology</subject><subject>Reference Standards</subject><subject>Reference Values</subject><subject>Reproducibility of Results</subject><subject>Sex Characteristics</subject><issn>0889-5406</issn><issn>1097-6752</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFks9u1DAQhyMEokvhCZCQL0hcEsaJ42yQQEKFFkQlDvwRN2tiT1SHrL3YSds98yI8C0-G011A4sLJlvz7ZsafJssecig4cPl0KHDwxhcl8LKAugC-vpWtOLRNLpu6vJ2tYL1u81qAPMruxTgAQCtKuJsdlRXnsgaxyr6_IjfhyDDoC2bshly03kXme4bGjxR1emfv5iu0k43syk4XbHZTIJzIMGsosV7rcV6wZ-wzBotTujJ05uePSxytsdNuKbcNfutjguh6izddmHWGrinez-70OEZ6cDiPs0-nrz-evMnP35-9PXl5nmshxJTrisCQaQ00KHTLK46yRG6oA2o4aNN1FTei7lBQIwRpI3TFRbk2sq3btq-Osyf7ummUbzPFSW1s-t84oiM_R8V5KSW0SW6KVvuoDj7GQL3aBrvBsFMc1GJfDerGvlrsK6hVsp-oR4cGc7ch84f5rTsFHh8CGDWOfUCnbfybk7KpZLkUer7PUdJxaSmoqC05TcYG0pMy3v5nkBf_8Hq0zqaWX2lHcfBzcMm04iomRn1YFmXZE14CJJVfql8KdrzC</recordid><startdate>20121101</startdate><enddate>20121101</enddate><creator>Rastegar-Lari, Tannaz</creator><creator>Al-Azemi, Rashed</creator><creator>Thalib, Lukman</creator><creator>Årtun, Jon</creator><general>Mosby, Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20121101</creationdate><title>Dental arch dimensions of adolescent Kuwaitis with untreated ideal occlusion: Variation and validity of proposed expansion indexes</title><author>Rastegar-Lari, Tannaz ; Al-Azemi, Rashed ; Thalib, Lukman ; Årtun, Jon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c444t-c3e0ded9d07a4c9131a62a1deb0e710cdbb31d45ba4e744ecd4c31428d69599f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Adolescent</topic><topic>Arabs</topic><topic>Biological and medical sciences</topic><topic>Cephalometry</topic><topic>Dental Arch - anatomy & histology</topic><topic>Dental Occlusion, Centric</topic><topic>Dentistry</topic><topic>Female</topic><topic>Humans</topic><topic>Kuwait</topic><topic>Linear Models</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Otorhinolaryngology. Stomatology</topic><topic>Reference Standards</topic><topic>Reference Values</topic><topic>Reproducibility of Results</topic><topic>Sex Characteristics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rastegar-Lari, Tannaz</creatorcontrib><creatorcontrib>Al-Azemi, Rashed</creatorcontrib><creatorcontrib>Thalib, Lukman</creatorcontrib><creatorcontrib>Årtun, Jon</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of orthodontics and dentofacial orthopedics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rastegar-Lari, Tannaz</au><au>Al-Azemi, Rashed</au><au>Thalib, Lukman</au><au>Årtun, Jon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dental arch dimensions of adolescent Kuwaitis with untreated ideal occlusion: Variation and validity of proposed expansion indexes</atitle><jtitle>American journal of orthodontics and dentofacial orthopedics</jtitle><addtitle>Am J Orthod Dentofacial Orthop</addtitle><date>2012-11-01</date><risdate>2012</risdate><volume>142</volume><issue>5</issue><spage>635</spage><epage>644</epage><pages>635-644</pages><issn>0889-5406</issn><eissn>1097-6752</eissn><abstract>Introduction The purposes of this study were to analyze the variations in dental arch dimensions of a large representative sample of adolescent Kuwaitis with untreated almost ideal occlusion and to test the validity of proposed expansion indexes and multivariate linear regression with inclusion of lateral and posteroanterior cephalometric parameters for estimation of dental arch width. Methods Study models and both lateral and posteroanterior cephalograms of 143 Kuwaitis, aged 13 to 14 years, clinically diagnosed with untreated almost ideal occlusion during screening of a population-based sample, were examined. Maxillary and mandibular arch dimensions were measured by using a digital caliper accurate to 0.01 mm, and cephalometric parameters were measured electronically. Results All dimensions were greater in boys than in girls ( P <0.001) and demonstrated wide individual variations. Maxillary arch-width estimates according to 3 proposed expansion indexes differed from the actual dimensions ( P <0.001), with more than 60% of the dimensions having discrepancies greater than 1.0 mm and explained variances from 0.12 to 0.20. Multivariate linear regression with inclusion of cephalometric parameters provided better estimates, with explained variances from 0.29 to 0.44. Conclusions The tested expansion indexes provide poor estimates of maxillary arch widths, with low explained variances. Multivariate linear regression provides better estimates, with moderate explained variances.</abstract><cop>New York, NY</cop><pub>Mosby, Inc</pub><pmid>23116504</pmid><doi>10.1016/j.ajodo.2012.05.018</doi><tpages>10</tpages></addata></record> |
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| ispartof | American journal of orthodontics and dentofacial orthopedics, 2012-11, Vol.142 (5), p.635-644 |
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| subjects | Adolescent Arabs Biological and medical sciences Cephalometry Dental Arch - anatomy & histology Dental Occlusion, Centric Dentistry Female Humans Kuwait Linear Models Male Medical sciences Otorhinolaryngology. Stomatology Reference Standards Reference Values Reproducibility of Results Sex Characteristics |
| title | Dental arch dimensions of adolescent Kuwaitis with untreated ideal occlusion: Variation and validity of proposed expansion indexes |
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