Research article summary (published 29 Sep 2006):

[Occupational differentiation in dentistry 3. Hypermobility of the temporomandibular joint and condylar position at maximal mouth opening]

(Beroepsdifferentiatie in de tandheelkunde 3. Hypermobiliteit van het kaakgewricht en de positie van het caput mandibulae bij maximale mondopening.)

Full Abstract

Hypermobility of the temporomandibular joint is only noted when it interferes with smooth mandibular movements. These interferences may result from a condylar dislocation beyond the temporal eminence at maximum mouth opening. Aim of this study was to test whether the condyle of a symptomatically hypermobile temporomandibular joint is positioned more anterosuperiorly to the temporal eminence at maximum mouth opening than a condyle without hypermobility. Nine persons with a hypermobile temporomandibular joint and 9 control persons participated. Diagnostics were based upon opto-electronic mandibular movement recordings. Condylar positions at maximum mouth opening were assessed by magnetic resonance imaging. A small significant difference in condylar position was found between groups. Condyles of persons with a hypermobile temporomandibular joint moved beyond the temporal eminence. However, this was also true for nearly half of the control persons. This suggests that condylar position alone is not a sufficient condition for symptomatic hypermobility of the temporomandibular joint. Maybe, symptoms of hypermobility only become apparent in combination with a particular line of action of the masticatory muscles.

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Author information

Author/s: Kalaykova, S I (SI); Naeije, M (M); Huddleston Slater, J J R (JJ); Lobbezoo, F (F);

Affiliation: Uit de afdeling Orale Functieleer, sectie voor Orale Kinesiologie, van het Academisch Centrum Tandheelkunde Amsterdam.

Journal and publication information

Publication Type: English Abstract; Journal Article

Journal: Nederlands tijdschrift voor tandheelkunde (Ned Tijdschr Tandheelkd), published in Netherlands. (Language: dut)

Reference: 2006-Oct; vol 113 (issue 10) : pp 391-6

Dates: Created 2006/10/23; Completed 2006/11/09; Revised 2006/11/15;

PMID: 17058759, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult Case-Control Studies Female Humans Joint Instability Male Mandible - anatomy & histology; physiology Mandibular Condyle - anatomy & histology; physiology

Mastication - physiology Mouth - physiology Movement Range of Motion, Articular Temporal Bone - anatomy & histology; physiology Temporomandibular Joint - anatomy & histology; physiology; physiopathology Temporomandibular Joint Disorders - pathology; physiopathology Vertical Dimension

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