Assessment of Antero-Posterior Skeletal and Soft Tissue Relationships of Adult Indian Subjects in Natural Head Position and Centric Relation
Identifieur interne : 001007 ( Pmc/Checkpoint ); précédent : 001006; suivant : 001008Assessment of Antero-Posterior Skeletal and Soft Tissue Relationships of Adult Indian Subjects in Natural Head Position and Centric Relation
Auteurs : Vishnu Ben Latif [Inde] ; Rohan Rai [Inde] ; Gautham Hegde [Inde] ; Shabna Shajahan [Inde]Source :
- Journal of International Oral Health : JIOH [ 0976-7428 ] ; 2015.
Abstract
The aim of this study was to verify the intra-individual reproducibility of natural head position (NHP) in centric relation (CR) position, to prove the inter-individual differences in the Frankfort horizontal plane and sella-nasion line compared with the true horizontal line, and to establish linear norms from A-point, B-point, Pog as well as soft tissue A-point, soft tissue B-point, and soft tissue Pog to nasion true vertical line (NTVL) in adult Indian subjects.
Lateral cephalograms (T1) of Angle’s Class I subjects were taken in NHP and with bite in CR. A second lateral cephalogram (T2) of these subjects with ANB angle in the range 1-4° were taken after 1 week using the same wax bite and both the radiographs were analyzed based on six angular parameters using cephalometric software (Do-it, Dental studio NX version 4.1) to assess the reproducibility of NHP. Linear values of six landmarks were taken in relation to NTVL, and the mean values were calculated. A total of 116 subjects were included in this study.
When the cephalometric values of T1 and T2 were analyzed, it was found that, the parameters showed a
The study proved that NHP is a reproducible and accurate when recorded with the mandible in CR. Linear norms for skeletal Class I subjects in relation to NTVL were established.
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PubMed: 26124598
PubMed Central: 4479772
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Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Professor & Head, Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka</wicri:regionArea><wicri:noRegion>Karnataka</wicri:noRegion></affiliation></author><author><name sortKey="Hegde, Gautham" sort="Hegde, Gautham" uniqKey="Hegde G" first="Gautham" last="Hegde">Gautham Hegde</name><affiliation wicri:level="1"><nlm:aff id="aff2">Reader, Department of Orthodontics and Dentofacial Orthopaedics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Reader, Department of Orthodontics and Dentofacial Orthopaedics, AJ Institute of Dental Sciences, Mangalore, Karnataka</wicri:regionArea><wicri:noRegion>Karnataka</wicri:noRegion></affiliation></author><author><name sortKey="Shajahan, Shabna" sort="Shajahan, Shabna" uniqKey="Shajahan S" first="Shabna" last="Shajahan">Shabna Shajahan</name><affiliation wicri:level="1"><nlm:aff id="aff4">Intern, PMS College of Dental Science and Research, Vattappara, Thiruvananthapuram, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Intern, PMS College of Dental Science and Research, Vattappara, Thiruvananthapuram, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">26124598</idno><idno type="pmc">4479772</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479772</idno><idno type="RBID">PMC:4479772</idno><date when="2015">2015</date><idno type="wicri:Area/Pmc/Corpus">000333</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000333</idno><idno type="wicri:Area/Pmc/Curation">000333</idno><idno type="wicri:explorRef" 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Karnataka</wicri:regionArea><wicri:noRegion>Karnataka</wicri:noRegion></affiliation></author><author><name sortKey="Rai, Rohan" sort="Rai, Rohan" uniqKey="Rai R" first="Rohan" last="Rai">Rohan Rai</name><affiliation wicri:level="1"><nlm:aff id="aff3">Professor & Head, Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Professor & Head, Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka</wicri:regionArea><wicri:noRegion>Karnataka</wicri:noRegion></affiliation></author><author><name sortKey="Hegde, Gautham" sort="Hegde, Gautham" uniqKey="Hegde G" first="Gautham" last="Hegde">Gautham Hegde</name><affiliation wicri:level="1"><nlm:aff id="aff2">Reader, Department of Orthodontics and Dentofacial Orthopaedics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Reader, Department of Orthodontics and Dentofacial Orthopaedics, AJ Institute of Dental Sciences, Mangalore, Karnataka</wicri:regionArea><wicri:noRegion>Karnataka</wicri:noRegion></affiliation></author><author><name sortKey="Shajahan, Shabna" sort="Shajahan, Shabna" uniqKey="Shajahan S" first="Shabna" last="Shajahan">Shabna Shajahan</name><affiliation wicri:level="1"><nlm:aff id="aff4">Intern, PMS College of Dental Science and Research, Vattappara, Thiruvananthapuram, Kerala, India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Intern, PMS College of Dental Science and Research, Vattappara, Thiruvananthapuram, Kerala</wicri:regionArea><wicri:noRegion>Kerala</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of International Oral Health : JIOH</title><idno type="ISSN">0976-7428</idno><idno type="eISSN">0976-1799</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Background:</title><p>The aim of this study was to verify the intra-individual reproducibility of natural head position (NHP) in centric relation (CR) position, to prove the inter-individual differences in the Frankfort horizontal plane and sella-nasion line compared with the true horizontal line, and to establish linear norms from A-point, B-point, Pog as well as soft tissue A-point, soft tissue B-point, and soft tissue Pog to nasion true vertical line (NTVL) in adult Indian subjects.</p></sec><sec id="st2"><title>Methods:</title><p>Lateral cephalograms (T1) of Angle’s Class I subjects were taken in NHP and with bite in CR. A second lateral cephalogram (T2) of these subjects with ANB angle in the range 1-4° were taken after 1 week using the same wax bite and both the radiographs were analyzed based on six angular parameters using cephalometric software (Do-it, Dental studio NX version 4.1) to assess the reproducibility of NHP. Linear values of six landmarks were taken in relation to NTVL, and the mean values were calculated. A total of 116 subjects were included in this study.</p></sec><sec id="st3"><title>Results:</title><p>When the cephalometric values of T1 and T2 were analyzed, it was found that, the parameters showed a <italic>P</italic> < 0.001, indicating the reproducibility of NHP in CR. Mean values for point A, point B, Pog and their soft tissue counterparts were also obtained.</p></sec><sec id="st4"><title>Conclusion:</title><p>The study proved that NHP is a reproducible and accurate when recorded with the mandible in CR. Linear norms for skeletal Class I subjects in relation to NTVL were established.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Ahn, Jh" uniqKey="Ahn J">JH Ahn</name></author><author><name sortKey="Bae, Kh" uniqKey="Bae K">KH Bae</name></author><author><name sortKey="Park, Yj" uniqKey="Park Y">YJ Park</name></author><author><name sortKey="Hong, Rk" uniqKey="Hong R">RK Hong</name></author><author><name sortKey="Nam, Jh" uniqKey="Nam J">JH Nam</name></author><author><name sortKey="Kim, Mj" uniqKey="Kim M">MJ Kim</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Broca, M" uniqKey="Broca M">M Broca</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Moorrees, Cf" uniqKey="Moorrees C">CF Moorrees</name></author><author><name sortKey="Kean, Mr" uniqKey="Kean M">MR Kean</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Leitao, P" uniqKey="Leitao P">P Leitão</name></author><author><name sortKey="Nanda, Rs" uniqKey="Nanda R">RS Nanda</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Peng, L" uniqKey="Peng L">L Peng</name></author><author><name sortKey="Cooke, Ms" uniqKey="Cooke M">MS Cooke</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Dawson, Pe" uniqKey="Dawson P">PE Dawson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wood, Dp" uniqKey="Wood D">DP Wood</name></author><author><name sortKey="Elliott, Rw" uniqKey="Elliott R">RW Elliott</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Roth, Rh" uniqKey="Roth R">RH Roth</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Solow, B" uniqKey="Solow B">B Solow</name></author><author><name sortKey="Tallgren, A" uniqKey="Tallgren A">A Tallgren</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Marcotte, Mr" uniqKey="Marcotte M">MR Marcotte</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Huggare, Ja" uniqKey="Huggare J">JA Huggare</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Solow, B" uniqKey="Solow B">B Solow</name></author><author><name sortKey="Tallgren, A" uniqKey="Tallgren A">A Tallgren</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Dahlberg, G" uniqKey="Dahlberg G">G Dahlberg</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Mathe, J" uniqKey="Mathe J">J Mathe`</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Brown, T" uniqKey="Brown T">T Brown</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Cooke, Ms" uniqKey="Cooke M">MS Cooke</name></author><author><name sortKey="Wei, Sh" uniqKey="Wei S">SH Wei</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jacobson, A" uniqKey="Jacobson A">A Jacobson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Downs, Wb" uniqKey="Downs W">WB Downs</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Bjerin, Ra" uniqKey="Bjerin R">RA Bjerin</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Thurow, Rc" uniqKey="Thurow R">RC Thurow</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Barbera, Al" uniqKey="Barbera A">AL Barbera</name></author><author><name sortKey="Sampson, Wj" uniqKey="Sampson W">WJ Sampson</name></author><author><name sortKey="Townsend, Gc" uniqKey="Townsend G">GC Townsend</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Houston, Wj" uniqKey="Houston W">WJ Houston</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jacobson, A" uniqKey="Jacobson A">A Jacobson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ozbek, Mm" uniqKey="Ozbek M">MM Ozbek</name></author><author><name sortKey="Koklu, A" uniqKey="Koklu A">A Köklü</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Klar, Na" uniqKey="Klar N">NA Klar</name></author><author><name sortKey="Kulbersh, R" uniqKey="Kulbersh R">R Kulbersh</name></author><author><name sortKey="Freeland, T" uniqKey="Freeland T">T Freeland</name></author><author><name sortKey="Kaczynski, R" uniqKey="Kaczynski R">R Kaczynski</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kantor, Me" uniqKey="Kantor M">ME Kantor</name></author><author><name sortKey="Silverman, Si" uniqKey="Silverman S">SI Silverman</name></author><author><name sortKey="Garfinkel, L" uniqKey="Garfinkel L">L Garfinkel</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Balthazar Hart, Y" uniqKey="Balthazar Hart Y">Y Balthazar-Hart</name></author><author><name sortKey="Sandrik, Jl" uniqKey="Sandrik J">JL Sandrik</name></author><author><name sortKey="Malone, Wf" uniqKey="Malone W">WF Malone</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Gysi, A" uniqKey="Gysi A">A Gysi</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ziebert, Gj" uniqKey="Ziebert G">GJ Ziebert</name></author><author><name sortKey="Balthazar Hart, Y" uniqKey="Balthazar Hart Y">Y Balthazar-Hart</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ahangar Atashi, Mh" uniqKey="Ahangar Atashi M">MH Ahangar Atashi</name></author><author><name sortKey="Kachooei, M" uniqKey="Kachooei M">M Kachooei</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Int Oral Health</journal-id><journal-id journal-id-type="iso-abbrev">J Int Oral Health</journal-id><journal-id journal-id-type="publisher-id">JIOH</journal-id><journal-title-group><journal-title>Journal of International Oral Health : JIOH</journal-title></journal-title-group><issn pub-type="ppub">0976-7428</issn><issn pub-type="epub">0976-1799</issn><publisher><publisher-name>Dentmedpub Research and Printing Co</publisher-name><publisher-loc>India</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">26124598</article-id><article-id pub-id-type="pmc">4479772</article-id><article-id pub-id-type="publisher-id">JIOH-7-41</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Research</subject></subj-group></article-categories><title-group><article-title>Assessment of Antero-Posterior Skeletal and Soft Tissue Relationships of Adult Indian Subjects in Natural Head Position and Centric Relation</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Latif</surname><given-names>Vishnu Ben</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Keshavaraj</surname><given-names></given-names></name><xref ref-type="aff" rid="aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>Rai</surname><given-names>Rohan</given-names></name><xref ref-type="aff" rid="aff3">3</xref></contrib><contrib contrib-type="author"><name><surname>Hegde</surname><given-names>Gautham</given-names></name><xref ref-type="aff" rid="aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>Shajahan</surname><given-names>Shabna</given-names></name><xref ref-type="aff" rid="aff4">4</xref></contrib></contrib-group><aff id="aff1"><label>1</label>Postgraduate Student, Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka, India</aff><aff id="aff2"><label>2</label>Reader, Department of Orthodontics and Dentofacial Orthopaedics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India</aff><aff id="aff3"><label>3</label>Professor & Head, Department of Orthodontics and Dentofacial Orthopaedics, A.J Institute of Dental Sciences, Mangalore, Karnataka, India</aff><aff id="aff4"><label>4</label>Intern, PMS College of Dental Science and Research, Vattappara, Thiruvananthapuram, Kerala, India</aff><author-notes><corresp id="cor1"><bold><italic>Correspondence:</italic></bold> Dr. Latif VB. Smarana, Thekkumgopuram, Kottayam - 686 001, Kerala, India. Phone: +91-8095515116. Email: <email xlink:href="ibnlatif@gmail.com">ibnlatif@gmail.com</email></corresp></author-notes><pub-date pub-type="ppub"><month>6</month><year>2015</year></pub-date><volume>7</volume><issue>6</issue><fpage>41</fpage><lpage>47</lpage><history><date date-type="received"><day>18</day><month>11</month><year>2014</year></date><date date-type="accepted"><day>10</day><month>2</month><year>2015</year></date></history><permissions><copyright-statement>Copyright: © Journal of International Oral Health</copyright-statement><copyright-year>2015</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><sec id="st1"><title>Background:</title><p>The aim of this study was to verify the intra-individual reproducibility of natural head position (NHP) in centric relation (CR) position, to prove the inter-individual differences in the Frankfort horizontal plane and sella-nasion line compared with the true horizontal line, and to establish linear norms from A-point, B-point, Pog as well as soft tissue A-point, soft tissue B-point, and soft tissue Pog to nasion true vertical line (NTVL) in adult Indian subjects.</p></sec><sec id="st2"><title>Methods:</title><p>Lateral cephalograms (T1) of Angle’s Class I subjects were taken in NHP and with bite in CR. A second lateral cephalogram (T2) of these subjects with ANB angle in the range 1-4° were taken after 1 week using the same wax bite and both the radiographs were analyzed based on six angular parameters using cephalometric software (Do-it, Dental studio NX version 4.1) to assess the reproducibility of NHP. Linear values of six landmarks were taken in relation to NTVL, and the mean values were calculated. A total of 116 subjects were included in this study.</p></sec><sec id="st3"><title>Results:</title><p>When the cephalometric values of T1 and T2 were analyzed, it was found that, the parameters showed a <italic>P</italic> < 0.001, indicating the reproducibility of NHP in CR. Mean values for point A, point B, Pog and their soft tissue counterparts were also obtained.</p></sec><sec id="st4"><title>Conclusion:</title><p>The study proved that NHP is a reproducible and accurate when recorded with the mandible in CR. Linear norms for skeletal Class I subjects in relation to NTVL were established.</p></sec></abstract><kwd-group><kwd>Centric relation</kwd><kwd>nasion true vertical line</kwd><kwd>natural head position</kwd></kwd-group></article-meta></front></pmc><affiliations><list><country><li>Inde</li></country></list><tree><country name="Inde"><noRegion><name sortKey="Latif, Vishnu Ben" sort="Latif, Vishnu Ben" uniqKey="Latif V" first="Vishnu Ben" last="Latif">Vishnu Ben Latif</name></noRegion><name sortKey="Hegde, Gautham" sort="Hegde, Gautham" uniqKey="Hegde G" first="Gautham" last="Hegde">Gautham Hegde</name><name sortKey="Rai, Rohan" sort="Rai, Rohan" uniqKey="Rai R" first="Rohan" last="Rai">Rohan Rai</name><name sortKey="Shajahan, Shabna" sort="Shajahan, Shabna" uniqKey="Shajahan S" first="Shabna" last="Shajahan">Shabna Shajahan</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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