A determination of occlusal plane comparing different levels of the tragus to form ala-tragal line or Camper's line: A photographic study
Identifieur interne : 002703 ( Main/Exploration ); précédent : 002702; suivant : 002704A determination of occlusal plane comparing different levels of the tragus to form ala-tragal line or Camper's line: A photographic study
Auteurs : Sandeep Kumar [Inde] ; Sandeep Garg [Inde] ; Seema Gupta [Inde]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2013.
Abstract
The purpose of this study was to determine accurately the part of the tragus to be used to form the Ala-Tragal line or Camper's line in orthognathic profile patients.
150 dentate subjects with age of 18-40 years with orthognathic profile were sampled. Life-size lateral digital photographs of the face with fox plane were taken in natural head position. Different angles between Eye-Ear plane and occlusal plane (OT1-OP), Eye-Ear plane and ala-superior border of tragus (OT1-AT1), Eye-Ear plane and ala-middle border of tragus (OT1-AT2) and Eye-Ear plane and ala-inferior border of tragus (OT1-AT3) were calculated using computer software package, AutoCAD 2004. From the three angles formed by the Eye-ear plane (OT1 or FH plane) and the ala-tragal lines, the one closest to the angle formed between Eye-Ear plane (OT1) and occlusal plane (OP) was used to determine the occlusal plane of orientation. The obtained results were subjected to ANOVA F test, Tukey's Honestly significant difference test, followed by Karl Pearson coefficient of correlation test.
The mean of base line angle i.e. OT1-OP angle (11.96 ± 4.36) was found to be close to OT1-AT2 angle (13.67 ± 1.93) and OT1-AT3 angle (10.31 ± 2.03), but OT1-OP angle was found to be more closer to OT1-AT3 angle. Comparison of mean angles showed that OT1-OP angle in both males (11.68) and females (12.51) is close to OT1-AT3 angle (males- 11.01, females- 11.95).
The line joining from ala to the lower border of the tragus was parallel to the occlusal plane in 53.3% of the subjects. There was no influence of the sex on the level of occlusal plane.
Url:
DOI: 10.4047/jap.2013.5.1.9
PubMed: 23508203
PubMed Central: 3597930
Affiliations:
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id="A2">Department of Prosthodontics and Maxillofacial Prosthetics, M M Institute of Dental Sciences, Mulana, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics and Maxillofacial Prosthetics, M M Institute of Dental Sciences, Mulana</wicri:regionArea><wicri:noRegion>Mulana</wicri:noRegion></affiliation></author><author><name sortKey="Gupta, Seema" sort="Gupta, Seema" uniqKey="Gupta S" first="Seema" last="Gupta">Seema Gupta</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Orthodontics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Orthodontics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan</wicri:regionArea><wicri:noRegion>Rajasthan</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno 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type="wicri:Area/Main/Exploration">002703</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A determination of occlusal plane comparing different levels of the tragus to form ala-tragal line or Camper's line: A photographic study</title><author><name sortKey="Kumar, Sandeep" sort="Kumar, Sandeep" uniqKey="Kumar S" first="Sandeep" last="Kumar">Sandeep Kumar</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics and Maxillofacial Prosthetics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics and Maxillofacial Prosthetics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan</wicri:regionArea><wicri:noRegion>Rajasthan</wicri:noRegion></affiliation></author><author><name sortKey="Garg, Sandeep" sort="Garg, Sandeep" uniqKey="Garg S" first="Sandeep" last="Garg">Sandeep Garg</name><affiliation wicri:level="1"><nlm:aff id="A2">Department of Prosthodontics and Maxillofacial Prosthetics, M M Institute of Dental Sciences, Mulana, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics and Maxillofacial Prosthetics, M M Institute of Dental Sciences, Mulana</wicri:regionArea><wicri:noRegion>Mulana</wicri:noRegion></affiliation></author><author><name sortKey="Gupta, Seema" sort="Gupta, Seema" uniqKey="Gupta S" first="Seema" last="Gupta">Seema Gupta</name><affiliation wicri:level="1"><nlm:aff id="A3">Department of Orthodontics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Orthodontics, Surendera Dental College & Research Institute, Sri-Ganganagar, Rajasthan</wicri:regionArea><wicri:noRegion>Rajasthan</wicri:noRegion></affiliation></author></analytic><series><title level="j">The Journal of Advanced Prosthodontics</title><idno type="ISSN">2005-7806</idno><idno type="eISSN">2005-7814</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>PURPOSE</title><p>The purpose of this study was to determine accurately the part of the tragus to be used to form the Ala-Tragal line or Camper's line in orthognathic profile patients.</p></sec><sec><title>MATERIALS AND METHODS</title><p>150 dentate subjects with age of 18-40 years with orthognathic profile were sampled. Life-size lateral digital photographs of the face with fox plane were taken in natural head position. Different angles between Eye-Ear plane and occlusal plane (OT<sub>1</sub>-OP), Eye-Ear plane and ala-superior border of tragus (OT<sub>1</sub>-AT<sub>1</sub>), Eye-Ear plane and ala-middle border of tragus (OT<sub>1</sub>-AT<sub>2</sub>) and Eye-Ear plane and ala-inferior border of tragus (OT<sub>1</sub>-AT<sub>3</sub>) were calculated using computer software package, AutoCAD 2004. From the three angles formed by the Eye-ear plane (OT<sub>1</sub> or FH plane) and the ala-tragal lines, the one closest to the angle formed between Eye-Ear plane (OT<sub>1</sub>) and occlusal plane (OP) was used to determine the occlusal plane of orientation. The obtained results were subjected to ANOVA F test, Tukey's Honestly significant difference test, followed by Karl Pearson coefficient of correlation test. <italic>P</italic> values of less than 0.05 were taken as statistically significant.</p></sec><sec><title>RESULTS</title><p>The mean of base line angle i.e. OT<sub>1</sub>-OP angle (11.96 ± 4.36) was found to be close to OT<sub>1</sub>-AT<sub>2</sub> angle (13.67 ± 1.93) and OT<sub>1</sub>-AT<sub>3</sub> angle (10.31 ± 2.03), but OT<sub>1</sub>-OP angle was found to be more closer to OT<sub>1</sub>-AT<sub>3</sub> angle. Comparison of mean angles showed that OT<sub>1</sub>-OP angle in both males (11.68) and females (12.51) is close to OT<sub>1</sub>-AT<sub>3</sub> angle (males- 11.01, females- 11.95).</p></sec><sec><title>CONCLUSION</title><p>The line joining from ala to the lower border of the tragus was parallel to the occlusal plane in 53.3% of the subjects. 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Wb" uniqKey="Downs W">WB Downs</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hartono, R" uniqKey="Hartono R">R Hartono</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Van Niekerk, Fw" uniqKey="Van Niekerk F">FW van Niekerk</name></author><author><name sortKey="Miller, Vj" uniqKey="Miller V">VJ Miller</name></author><author><name sortKey="Bibby, Re" uniqKey="Bibby R">RE Bibby</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Karkazis, Hc" uniqKey="Karkazis H">HC Karkazis</name></author><author><name sortKey="Polyzois, Gl" uniqKey="Polyzois G">GL Polyzois</name></author><author><name sortKey="Zissis, Aj" uniqKey="Zissis A">AJ Zissis</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Swenson, Mg" uniqKey="Swenson M">MG Swenson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Mcgee, Gf" uniqKey="Mcgee G">GF McGee</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sloane, Rb" uniqKey="Sloane R">RB Sloane</name></author><author><name sortKey="Cook, J" uniqKey="Cook J">J Cook</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="L Estrange, Pr" uniqKey="L Estrange P">PR L'Estrange</name></author><author><name sortKey="Vig, Ps" uniqKey="Vig P">PS Vig</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Landa, Ls" uniqKey="Landa L">LS Landa</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Inde</li></country></list><tree><country name="Inde"><noRegion><name sortKey="Kumar, Sandeep" sort="Kumar, Sandeep" uniqKey="Kumar S" first="Sandeep" last="Kumar">Sandeep Kumar</name></noRegion><name sortKey="Garg, Sandeep" sort="Garg, Sandeep" uniqKey="Garg S" first="Sandeep" last="Garg">Sandeep Garg</name><name sortKey="Gupta, Seema" sort="Gupta, Seema" 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