Associations between incisor and mandibular condylar movements during maximum mouth opening in humans

This study evaluated the common clinical assumption that condylar translation and mouth opening at the incisor are closely related. The sample studied comprised 27 adult females (23–35 years), selected for normal temporomandibular function, occlusion, and skeletal patterns. Condylar and mandibular c...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Archives of oral biology 2000-04, Vol.45 (4), p.267-275
Hauptverfasser: Travers, K.H., Buschang, P.H., Hayasaki, H., Throckmorton, G.S.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 275
container_issue 4
container_start_page 267
container_title Archives of oral biology
container_volume 45
creator Travers, K.H.
Buschang, P.H.
Hayasaki, H.
Throckmorton, G.S.
description This study evaluated the common clinical assumption that condylar translation and mouth opening at the incisor are closely related. The sample studied comprised 27 adult females (23–35 years), selected for normal temporomandibular function, occlusion, and skeletal patterns. Condylar and mandibular central incisor movements (straight-line distances and curvilinear pathways) were recorded in three dimensions (3D) for 20 s with an optoelectric (Optotrak®) jaw-tracking system while each participant performed multiple maximum opening cycles. Masticatory analysis and multilevel statistical programs computed the 3D movements of the incisors and condylar hinge axis during opening and closing. The incisor point moved an average straight-line distance of 46.6 mm during opening and 45.9 mm during closing; the lengths of the opening and closing curvilinear pathways were 48.6 and 47.7 mm, respectively. The condyles moved average straight-line distances of 11.9 and 12.2 mm during opening and closing, respectively. The condyles’ curvilinear pathways during opening and closing were 14 and 14.6 mm, respectively. Ranges of condylar movement varied widely between individuals. The straight-line distances and curvilinear pathways were highly correlated for the incisors ( R=0.98) and the condyles ( R=0.98). Neither the straight-line distances nor curvilinear pathways of the incisors were correlated with those of the condyles. Incisor straight-line distances and curvilinear pathways were moderately correlated with mandibular rotation ( R between subjects=0.82 and R between repeats=0.88). During repeated openings, both condylar and incisor excursions increased, but during repeated closings only incisor excursions increased. It is concluded that (1) maximum incisor opening does not provide reliable information about condylar translation and its use as a diagnostic indicator of condylar movement should be limited, (2) healthy individuals may perform normal opening with highly variable amounts of condylar translation, (3) the straight-line distances of the incisor and condyles provide adequate information about the length of the curvilinear pathway, and (4) variation in maximum incisor opening is largely explained by variation in the amount of mandibular rotation.
doi_str_mv 10.1016/S0003-9969(99)00140-5
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_70949503</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0003996999001405</els_id><sourcerecordid>70949503</sourcerecordid><originalsourceid>FETCH-LOGICAL-c427t-c292d88e49430a15baba3a941fe4fc20eddb9a22703a858789c280347f40b59a3</originalsourceid><addsrcrecordid>eNqFkMtOxCAUhonR6Hh5BE1XRhfVQwttWZmJ8ZZM4kJdEwqnipnCCK06by_jGOPOzeH2_eeEj5BDCmcUaHX-AABlLkQlToQ4BaAMcr5BJrSpRU45VJtk8ovskN0YX9ORVxXdJjsUamiqqp4QnMbotVWD9S5mLQ4fiC6zTtvoQ6acyfpUbDvOVci0d2a52vT-HXt0Q8zMGKx7TtCn7cc-PYzDS-YX6Fa31mUvY8rHfbLVqXnEg591jzxdXz1e3uaz-5u7y-ks16yoh1wXojBNg0ywEhTlrWpVqQSjHbJOF4DGtEIVRQ2lanhTN0IXDZSs7hi0XKhyjxyv-y6CfxsxDrK3UeN8rhz6McoaBBMcygTyNaiDjzFgJxfB9iosJQW58iu__cqVvFTkt1_JU-7oZ8DY9mj-pNZCE3CxBjB9891ikFFbdBqNDagHabz9Z8QXWBWMTA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>70949503</pqid></control><display><type>article</type><title>Associations between incisor and mandibular condylar movements during maximum mouth opening in humans</title><source>MEDLINE</source><source>Access via ScienceDirect (Elsevier)</source><creator>Travers, K.H. ; Buschang, P.H. ; Hayasaki, H. ; Throckmorton, G.S.</creator><creatorcontrib>Travers, K.H. ; Buschang, P.H. ; Hayasaki, H. ; Throckmorton, G.S.</creatorcontrib><description>This study evaluated the common clinical assumption that condylar translation and mouth opening at the incisor are closely related. The sample studied comprised 27 adult females (23–35 years), selected for normal temporomandibular function, occlusion, and skeletal patterns. Condylar and mandibular central incisor movements (straight-line distances and curvilinear pathways) were recorded in three dimensions (3D) for 20 s with an optoelectric (Optotrak®) jaw-tracking system while each participant performed multiple maximum opening cycles. Masticatory analysis and multilevel statistical programs computed the 3D movements of the incisors and condylar hinge axis during opening and closing. The incisor point moved an average straight-line distance of 46.6 mm during opening and 45.9 mm during closing; the lengths of the opening and closing curvilinear pathways were 48.6 and 47.7 mm, respectively. The condyles moved average straight-line distances of 11.9 and 12.2 mm during opening and closing, respectively. The condyles’ curvilinear pathways during opening and closing were 14 and 14.6 mm, respectively. Ranges of condylar movement varied widely between individuals. The straight-line distances and curvilinear pathways were highly correlated for the incisors ( R=0.98) and the condyles ( R=0.98). Neither the straight-line distances nor curvilinear pathways of the incisors were correlated with those of the condyles. Incisor straight-line distances and curvilinear pathways were moderately correlated with mandibular rotation ( R between subjects=0.82 and R between repeats=0.88). During repeated openings, both condylar and incisor excursions increased, but during repeated closings only incisor excursions increased. It is concluded that (1) maximum incisor opening does not provide reliable information about condylar translation and its use as a diagnostic indicator of condylar movement should be limited, (2) healthy individuals may perform normal opening with highly variable amounts of condylar translation, (3) the straight-line distances of the incisor and condyles provide adequate information about the length of the curvilinear pathway, and (4) variation in maximum incisor opening is largely explained by variation in the amount of mandibular rotation.</description><identifier>ISSN: 0003-9969</identifier><identifier>EISSN: 1879-1506</identifier><identifier>DOI: 10.1016/S0003-9969(99)00140-5</identifier><identifier>PMID: 10708667</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Adult ; Adult females ; Condyles ; Dental Occlusion ; Dental Occlusion, Centric ; Dentistry ; Female ; Humans ; Image Processing, Computer-Assisted ; Incisor - anatomy &amp; histology ; Incisor - physiology ; Incisors ; Jaw Relation Record - instrumentation ; Kinematics ; Least-Squares Analysis ; Mandible - physiology ; Mandibular Condyle - anatomy &amp; histology ; Mandibular Condyle - physiology ; Mastication - physiology ; Maximum opening ; Movement ; Optics and Photonics - instrumentation ; Range of Motion, Articular ; Reproducibility of Results ; Rotation ; Temporomandibular Joint - physiology</subject><ispartof>Archives of oral biology, 2000-04, Vol.45 (4), p.267-275</ispartof><rights>2000 Elsevier Science Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-c292d88e49430a15baba3a941fe4fc20eddb9a22703a858789c280347f40b59a3</citedby><cites>FETCH-LOGICAL-c427t-c292d88e49430a15baba3a941fe4fc20eddb9a22703a858789c280347f40b59a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0003-9969(99)00140-5$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10708667$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Travers, K.H.</creatorcontrib><creatorcontrib>Buschang, P.H.</creatorcontrib><creatorcontrib>Hayasaki, H.</creatorcontrib><creatorcontrib>Throckmorton, G.S.</creatorcontrib><title>Associations between incisor and mandibular condylar movements during maximum mouth opening in humans</title><title>Archives of oral biology</title><addtitle>Arch Oral Biol</addtitle><description>This study evaluated the common clinical assumption that condylar translation and mouth opening at the incisor are closely related. The sample studied comprised 27 adult females (23–35 years), selected for normal temporomandibular function, occlusion, and skeletal patterns. Condylar and mandibular central incisor movements (straight-line distances and curvilinear pathways) were recorded in three dimensions (3D) for 20 s with an optoelectric (Optotrak®) jaw-tracking system while each participant performed multiple maximum opening cycles. Masticatory analysis and multilevel statistical programs computed the 3D movements of the incisors and condylar hinge axis during opening and closing. The incisor point moved an average straight-line distance of 46.6 mm during opening and 45.9 mm during closing; the lengths of the opening and closing curvilinear pathways were 48.6 and 47.7 mm, respectively. The condyles moved average straight-line distances of 11.9 and 12.2 mm during opening and closing, respectively. The condyles’ curvilinear pathways during opening and closing were 14 and 14.6 mm, respectively. Ranges of condylar movement varied widely between individuals. The straight-line distances and curvilinear pathways were highly correlated for the incisors ( R=0.98) and the condyles ( R=0.98). Neither the straight-line distances nor curvilinear pathways of the incisors were correlated with those of the condyles. Incisor straight-line distances and curvilinear pathways were moderately correlated with mandibular rotation ( R between subjects=0.82 and R between repeats=0.88). During repeated openings, both condylar and incisor excursions increased, but during repeated closings only incisor excursions increased. It is concluded that (1) maximum incisor opening does not provide reliable information about condylar translation and its use as a diagnostic indicator of condylar movement should be limited, (2) healthy individuals may perform normal opening with highly variable amounts of condylar translation, (3) the straight-line distances of the incisor and condyles provide adequate information about the length of the curvilinear pathway, and (4) variation in maximum incisor opening is largely explained by variation in the amount of mandibular rotation.</description><subject>Adult</subject><subject>Adult females</subject><subject>Condyles</subject><subject>Dental Occlusion</subject><subject>Dental Occlusion, Centric</subject><subject>Dentistry</subject><subject>Female</subject><subject>Humans</subject><subject>Image Processing, Computer-Assisted</subject><subject>Incisor - anatomy &amp; histology</subject><subject>Incisor - physiology</subject><subject>Incisors</subject><subject>Jaw Relation Record - instrumentation</subject><subject>Kinematics</subject><subject>Least-Squares Analysis</subject><subject>Mandible - physiology</subject><subject>Mandibular Condyle - anatomy &amp; histology</subject><subject>Mandibular Condyle - physiology</subject><subject>Mastication - physiology</subject><subject>Maximum opening</subject><subject>Movement</subject><subject>Optics and Photonics - instrumentation</subject><subject>Range of Motion, Articular</subject><subject>Reproducibility of Results</subject><subject>Rotation</subject><subject>Temporomandibular Joint - physiology</subject><issn>0003-9969</issn><issn>1879-1506</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkMtOxCAUhonR6Hh5BE1XRhfVQwttWZmJ8ZZM4kJdEwqnipnCCK06by_jGOPOzeH2_eeEj5BDCmcUaHX-AABlLkQlToQ4BaAMcr5BJrSpRU45VJtk8ovskN0YX9ORVxXdJjsUamiqqp4QnMbotVWD9S5mLQ4fiC6zTtvoQ6acyfpUbDvOVci0d2a52vT-HXt0Q8zMGKx7TtCn7cc-PYzDS-YX6Fa31mUvY8rHfbLVqXnEg591jzxdXz1e3uaz-5u7y-ks16yoh1wXojBNg0ywEhTlrWpVqQSjHbJOF4DGtEIVRQ2lanhTN0IXDZSs7hi0XKhyjxyv-y6CfxsxDrK3UeN8rhz6McoaBBMcygTyNaiDjzFgJxfB9iosJQW58iu__cqVvFTkt1_JU-7oZ8DY9mj-pNZCE3CxBjB9891ikFFbdBqNDagHabz9Z8QXWBWMTA</recordid><startdate>20000401</startdate><enddate>20000401</enddate><creator>Travers, K.H.</creator><creator>Buschang, P.H.</creator><creator>Hayasaki, H.</creator><creator>Throckmorton, G.S.</creator><general>Elsevier Ltd</general><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>20000401</creationdate><title>Associations between incisor and mandibular condylar movements during maximum mouth opening in humans</title><author>Travers, K.H. ; Buschang, P.H. ; Hayasaki, H. ; Throckmorton, G.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-c292d88e49430a15baba3a941fe4fc20eddb9a22703a858789c280347f40b59a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Adult</topic><topic>Adult females</topic><topic>Condyles</topic><topic>Dental Occlusion</topic><topic>Dental Occlusion, Centric</topic><topic>Dentistry</topic><topic>Female</topic><topic>Humans</topic><topic>Image Processing, Computer-Assisted</topic><topic>Incisor - anatomy &amp; histology</topic><topic>Incisor - physiology</topic><topic>Incisors</topic><topic>Jaw Relation Record - instrumentation</topic><topic>Kinematics</topic><topic>Least-Squares Analysis</topic><topic>Mandible - physiology</topic><topic>Mandibular Condyle - anatomy &amp; histology</topic><topic>Mandibular Condyle - physiology</topic><topic>Mastication - physiology</topic><topic>Maximum opening</topic><topic>Movement</topic><topic>Optics and Photonics - instrumentation</topic><topic>Range of Motion, Articular</topic><topic>Reproducibility of Results</topic><topic>Rotation</topic><topic>Temporomandibular Joint - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Travers, K.H.</creatorcontrib><creatorcontrib>Buschang, P.H.</creatorcontrib><creatorcontrib>Hayasaki, H.</creatorcontrib><creatorcontrib>Throckmorton, G.S.</creatorcontrib><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>Archives of oral biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Travers, K.H.</au><au>Buschang, P.H.</au><au>Hayasaki, H.</au><au>Throckmorton, G.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Associations between incisor and mandibular condylar movements during maximum mouth opening in humans</atitle><jtitle>Archives of oral biology</jtitle><addtitle>Arch Oral Biol</addtitle><date>2000-04-01</date><risdate>2000</risdate><volume>45</volume><issue>4</issue><spage>267</spage><epage>275</epage><pages>267-275</pages><issn>0003-9969</issn><eissn>1879-1506</eissn><abstract>This study evaluated the common clinical assumption that condylar translation and mouth opening at the incisor are closely related. The sample studied comprised 27 adult females (23–35 years), selected for normal temporomandibular function, occlusion, and skeletal patterns. Condylar and mandibular central incisor movements (straight-line distances and curvilinear pathways) were recorded in three dimensions (3D) for 20 s with an optoelectric (Optotrak®) jaw-tracking system while each participant performed multiple maximum opening cycles. Masticatory analysis and multilevel statistical programs computed the 3D movements of the incisors and condylar hinge axis during opening and closing. The incisor point moved an average straight-line distance of 46.6 mm during opening and 45.9 mm during closing; the lengths of the opening and closing curvilinear pathways were 48.6 and 47.7 mm, respectively. The condyles moved average straight-line distances of 11.9 and 12.2 mm during opening and closing, respectively. The condyles’ curvilinear pathways during opening and closing were 14 and 14.6 mm, respectively. Ranges of condylar movement varied widely between individuals. The straight-line distances and curvilinear pathways were highly correlated for the incisors ( R=0.98) and the condyles ( R=0.98). Neither the straight-line distances nor curvilinear pathways of the incisors were correlated with those of the condyles. Incisor straight-line distances and curvilinear pathways were moderately correlated with mandibular rotation ( R between subjects=0.82 and R between repeats=0.88). During repeated openings, both condylar and incisor excursions increased, but during repeated closings only incisor excursions increased. It is concluded that (1) maximum incisor opening does not provide reliable information about condylar translation and its use as a diagnostic indicator of condylar movement should be limited, (2) healthy individuals may perform normal opening with highly variable amounts of condylar translation, (3) the straight-line distances of the incisor and condyles provide adequate information about the length of the curvilinear pathway, and (4) variation in maximum incisor opening is largely explained by variation in the amount of mandibular rotation.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>10708667</pmid><doi>10.1016/S0003-9969(99)00140-5</doi><tpages>9</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0003-9969
ispartof Archives of oral biology, 2000-04, Vol.45 (4), p.267-275
issn 0003-9969
1879-1506
language eng
recordid cdi_proquest_miscellaneous_70949503
source MEDLINE; Access via ScienceDirect (Elsevier)
subjects Adult
Adult females
Condyles
Dental Occlusion
Dental Occlusion, Centric
Dentistry
Female
Humans
Image Processing, Computer-Assisted
Incisor - anatomy & histology
Incisor - physiology
Incisors
Jaw Relation Record - instrumentation
Kinematics
Least-Squares Analysis
Mandible - physiology
Mandibular Condyle - anatomy & histology
Mandibular Condyle - physiology
Mastication - physiology
Maximum opening
Movement
Optics and Photonics - instrumentation
Range of Motion, Articular
Reproducibility of Results
Rotation
Temporomandibular Joint - physiology
title Associations between incisor and mandibular condylar movements during maximum mouth opening in humans
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-01T18%3A39%3A59IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Associations%20between%20incisor%20and%20mandibular%20condylar%20movements%20during%20maximum%20mouth%20opening%20in%20humans&rft.jtitle=Archives%20of%20oral%20biology&rft.au=Travers,%20K.H.&rft.date=2000-04-01&rft.volume=45&rft.issue=4&rft.spage=267&rft.epage=275&rft.pages=267-275&rft.issn=0003-9969&rft.eissn=1879-1506&rft_id=info:doi/10.1016/S0003-9969(99)00140-5&rft_dat=%3Cproquest_cross%3E70949503%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=70949503&rft_id=info:pmid/10708667&rft_els_id=S0003996999001405&rfr_iscdi=true