A comparative study to measure the condylar guidance by the radiographic and clinical methods
Identifieur interne : 002E75 ( Pmc/Curation ); précédent : 002E74; suivant : 002E76A comparative study to measure the condylar guidance by the radiographic and clinical methods
Auteurs : Pragya Shreshta [Inde] ; Veena Jain [Inde] ; Ashu Bhalla [Inde] ; Gunjan Pruthi [Inde]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2012.
Abstract
The study was conducted to compare the radiographic and clinical methods of measuring the horizontal condylar guidance (HCG) values.
The condylar guidance was measured using the radiographic (CT scan) and three clinical methods i.e. the wax protrusive records, Lucia jig record and intraoral central bearing device in 12 patients aged between 20-40 years irrespective of sex. The records were taken and transferred on the semi-adjustable articulator to record the HCG values. The CT scan was taken for 3D reconstruction of the mid facial region. Frankfort horizontal plane (FHP) and a line extending from the superior anterior most point on the glenoid fossa to the most convex point on the apex of articular eminence (AE) was marked on the CT scan. An angle between these two lines was measured on both right and left sides to obtain condylar inclination angle. Three interocclusal protrusive wax and jig records were taken and transferred to the semi adjustable articulator. Three readings were recorded on each side. Similarly the records were taken and transferred to the same articulator using the intra oral central bearing device to record the readings.
The statistical analysis showed insignificant differences in the HCG values between the right and left sides [(
The right and left HCG values were almost similar. The CT scan showed higher HCG values than the clinical methods and among the clinical methods, values obtained from all the methods were comparable.
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DOI: 10.4047/jap.2012.4.3.153
PubMed: 22977723
PubMed Central: 3439625
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Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author><author><name sortKey="Bhalla, Ashu" sort="Bhalla, Ashu" uniqKey="Bhalla A" first="Ashu" last="Bhalla">Ashu Bhalla</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author><author><name sortKey="Pruthi, Gunjan" sort="Pruthi, Gunjan" uniqKey="Pruthi G" first="Gunjan" last="Pruthi">Gunjan Pruthi</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">22977723</idno><idno type="pmc">3439625</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3439625</idno><idno type="RBID">PMC:3439625</idno><idno type="doi">10.4047/jap.2012.4.3.153</idno><date when="2012">2012</date><idno type="wicri:Area/Pmc/Corpus">002E75</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002E75</idno><idno type="wicri:Area/Pmc/Curation">002E75</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002E75</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A comparative study to measure the condylar guidance by the radiographic and clinical methods</title><author><name sortKey="Shreshta, Pragya" sort="Shreshta, Pragya" uniqKey="Shreshta P" first="Pragya" last="Shreshta">Pragya Shreshta</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author><author><name sortKey="Jain, Veena" sort="Jain, Veena" uniqKey="Jain V" first="Veena" last="Jain">Veena Jain</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author><author><name sortKey="Bhalla, Ashu" sort="Bhalla, Ashu" uniqKey="Bhalla A" first="Ashu" last="Bhalla">Ashu Bhalla</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></affiliation></author><author><name sortKey="Pruthi, Gunjan" sort="Pruthi, Gunjan" uniqKey="Pruthi G" first="Gunjan" last="Pruthi">Gunjan Pruthi</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</nlm:aff><country xml:lang="fr" wicri:curation="lc">Inde</country><wicri:regionArea>Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi</wicri:regionArea></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="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>PURPOSE</title><p>The study was conducted to compare the radiographic and clinical methods of measuring the horizontal condylar guidance (HCG) values.</p></sec><sec><title>MATERIALS AND METHODS</title><p>The condylar guidance was measured using the radiographic (CT scan) and three clinical methods i.e. the wax protrusive records, Lucia jig record and intraoral central bearing device in 12 patients aged between 20-40 years irrespective of sex. The records were taken and transferred on the semi-adjustable articulator to record the HCG values. The CT scan was taken for 3D reconstruction of the mid facial region. Frankfort horizontal plane (FHP) and a line extending from the superior anterior most point on the glenoid fossa to the most convex point on the apex of articular eminence (AE) was marked on the CT scan. An angle between these two lines was measured on both right and left sides to obtain condylar inclination angle. Three interocclusal protrusive wax and jig records were taken and transferred to the semi adjustable articulator. Three readings were recorded on each side. Similarly the records were taken and transferred to the same articulator using the intra oral central bearing device to record the readings.</p></sec><sec><title>RESULTS</title><p>The statistical analysis showed insignificant differences in the HCG values between the right and left sides [(<italic>P</italic>=.589 (CT), <italic>P</italic>=.928 (wax), <italic>P</italic>=.625 (jig), <italic>P</italic>=.886 (tracer)]. The clinical methods provided low Pearsons correlation values [(R = 0.423 (wax), R = 0.354 (jig), R = 0.265 (tracer)] for the right as well as the left sides when compared with the CT values. Among the clinical methods, jig and wax method showed strong level of association which is statistically significant while the intra-oral tracer showed weak association with the other two methods.</p></sec><sec><title>CONCLUSION</title><p>The right and left HCG values were almost similar. The CT scan showed higher HCG values than the clinical methods and among the clinical methods, values obtained from all the methods were comparable.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Zamacona, Jm" uniqKey="Zamacona J">JM Zamacona</name></author><author><name sortKey="Otaduy, E" uniqKey="Otaduy E">E Otaduy</name></author><author><name sortKey="Aranda, E" uniqKey="Aranda E">E Aranda</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Pelletier, Lb" uniqKey="Pelletier L">LB Pelletier</name></author><author><name sortKey="Campbell, Sd" uniqKey="Campbell S">SD Campbell</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Posselt, U" uniqKey="Posselt U">U Posselt</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Mohl, Nd" uniqKey="Mohl N">ND Mohl</name></author><author><name sortKey="Zarb, Ga" 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Gheriani, As" uniqKey="El Gheriani A">AS el-Gheriani</name></author><author><name sortKey="Winstanley, Rb" uniqKey="Winstanley R">RB Winstanley</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Brewka, Re" uniqKey="Brewka R">RE Brewka</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Posselt, U" uniqKey="Posselt U">U Posselt</name></author><author><name sortKey="Skytting, B" uniqKey="Skytting B">B Skytting</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Donegan, Sj" uniqKey="Donegan S">SJ Donegan</name></author><author><name sortKey="Christensen, Lv" uniqKey="Christensen L">LV Christensen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Price, Rb" uniqKey="Price R">RB Price</name></author><author><name sortKey="Kolling, Jn" uniqKey="Kolling J">JN Kolling</name></author><author><name sortKey="Clayton, Ja" uniqKey="Clayton J">JA 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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Adv Prosthodont</journal-id><journal-id journal-id-type="iso-abbrev">J Adv Prosthodont</journal-id><journal-id journal-id-type="publisher-id">JAP</journal-id><journal-title-group><journal-title>The Journal of Advanced Prosthodontics</journal-title></journal-title-group><issn pub-type="ppub">2005-7806</issn><issn pub-type="epub">2005-7814</issn><publisher><publisher-name>The Korean Academy of Prosthodontics</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">22977723</article-id><article-id pub-id-type="pmc">3439625</article-id><article-id pub-id-type="doi">10.4047/jap.2012.4.3.153</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>A comparative study to measure the condylar guidance by the radiographic and clinical methods</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Shreshta</surname><given-names>Pragya</given-names></name><degrees>MDS</degrees><xref ref-type="aff" rid="A1"></xref></contrib><contrib contrib-type="author"><name><surname>Jain</surname><given-names>Veena</given-names></name><degrees>MDS</degrees><xref ref-type="aff" rid="A1"></xref></contrib><contrib contrib-type="author"><name><surname>Bhalla</surname><given-names>Ashu</given-names></name><degrees>MD</degrees><xref ref-type="aff" rid="A1"></xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Pruthi</surname><given-names>Gunjan</given-names></name><degrees>MDS</degrees><xref ref-type="aff" rid="A1"></xref></contrib></contrib-group><aff id="A1">Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi, India.</aff><author-notes><corresp>Corresponding author: Gunjan Pruthi. Department of Prosthodontics, All India Institute of Medical Sciences, New Delhi-29, India. Tel. 91 9999968841, <email>gunjan_prostho@yahoo.co.in</email></corresp></author-notes><pub-date pub-type="ppub"><month>8</month><year>2012</year></pub-date><pub-date pub-type="epub"><day>28</day><month>8</month><year>2012</year></pub-date><volume>4</volume><issue>3</issue><fpage>153</fpage><lpage>157</lpage><history><date date-type="received"><day>12</day><month>4</month><year>2012</year></date><date date-type="rev-recd"><day>04</day><month>6</month><year>2012</year></date><date date-type="accepted"><day>22</day><month>6</month><year>2012</year></date></history><permissions><copyright-statement>© 2012 The Korean Academy of Prosthodontics</copyright-statement><copyright-year>2012</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by-nc/3.0">http://creativecommons.org/licenses/by-nc/3.0</ext-link>) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><sec><title>PURPOSE</title><p>The study was conducted to compare the radiographic and clinical methods of measuring the horizontal condylar guidance (HCG) values.</p></sec><sec><title>MATERIALS AND METHODS</title><p>The condylar guidance was measured using the radiographic (CT scan) and three clinical methods i.e. the wax protrusive records, Lucia jig record and intraoral central bearing device in 12 patients aged between 20-40 years irrespective of sex. The records were taken and transferred on the semi-adjustable articulator to record the HCG values. The CT scan was taken for 3D reconstruction of the mid facial region. Frankfort horizontal plane (FHP) and a line extending from the superior anterior most point on the glenoid fossa to the most convex point on the apex of articular eminence (AE) was marked on the CT scan. An angle between these two lines was measured on both right and left sides to obtain condylar inclination angle. Three interocclusal protrusive wax and jig records were taken and transferred to the semi adjustable articulator. Three readings were recorded on each side. Similarly the records were taken and transferred to the same articulator using the intra oral central bearing device to record the readings.</p></sec><sec><title>RESULTS</title><p>The statistical analysis showed insignificant differences in the HCG values between the right and left sides [(<italic>P</italic>=.589 (CT), <italic>P</italic>=.928 (wax), <italic>P</italic>=.625 (jig), <italic>P</italic>=.886 (tracer)]. The clinical methods provided low Pearsons correlation values [(R = 0.423 (wax), R = 0.354 (jig), R = 0.265 (tracer)] for the right as well as the left sides when compared with the CT values. Among the clinical methods, jig and wax method showed strong level of association which is statistically significant while the intra-oral tracer showed weak association with the other two methods.</p></sec><sec><title>CONCLUSION</title><p>The right and left HCG values were almost similar. The CT scan showed higher HCG values than the clinical methods and among the clinical methods, values obtained from all the methods were comparable.</p></sec></abstract><kwd-group><kwd>Centric relation record</kwd><kwd>Interocclusal wax records</kwd><kwd>Intraoral tracing method</kwd><kwd>Lucia jig</kwd></kwd-group></article-meta></front><floats-group><fig id="F1" position="float"><label>Fig. 1</label><caption><p>Radiographic method to measure horizontal condylar guidance.</p></caption><graphic xlink:href="jap-4-153-g001"></graphic></fig><fig id="F2" position="float"><label>Fig. 2</label><caption><p>Interocclusal protrusive wax record method.</p></caption><graphic xlink:href="jap-4-153-g002"></graphic></fig><fig id="F3" position="float"><label>Fig. 3</label><caption><p>Anterior jig method.</p></caption><graphic xlink:href="jap-4-153-g003"></graphic></fig><fig id="F4" position="float"><label>Fig. 4</label><caption><p>A: Intraoral tracers attached to the maxillary and mandibular cast, B: Arrow point tracing, C: Protrusive record transferred to the articulator.</p></caption><graphic xlink:href="jap-4-153-g004"></graphic></fig><fig id="F5" position="float"><label>Fig. 5</label><caption><p>Comparison of the CGA values obtained from different methods (X-axis-Method, Y- axis- Condylar guidance angles, CT-Computed Tomography, CGA- Condylar guidance angle, J-Jig, T-Tracer, W-Wax, R-Right, L-Left, -CT, -Clinical methods).</p></caption><graphic xlink:href="jap-4-153-g005"></graphic></fig><fig id="F6" position="float"><label>Fig. 6</label><caption><p>Histogram showing comparison between right and left CGA obtained from different methods (X-axis-Method, Y- axis- Condylar guidance angles).</p></caption><graphic xlink:href="jap-4-153-g006"></graphic></fig><table-wrap id="T1" position="float"><label>Table 1</label><caption><p>Comparison of right and left condylar guidance angles (CGA) obtained in degrees from different methods</p></caption><graphic xlink:href="jap-4-153-i001"></graphic><table-wrap-foot><fn><p><italic>P</italic> value is significant at .05 level.</p></fn></table-wrap-foot></table-wrap><table-wrap id="T2" position="float"><label>Table 2</label><caption><p>Pearson correlation test for comparison between different methods</p></caption><graphic xlink:href="jap-4-153-i002"></graphic><table-wrap-foot><fn><p><sup>**</sup>Correlation is significant at <italic>P</italic> value ≤.01.</p><p><sup>*</sup>Correlation is significant at <italic>P</italic> value ≤.05.</p></fn></table-wrap-foot></table-wrap></floats-group></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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