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Variation in movement traces of the kinematic center of the temporomandibular joint.
J Orofac Pain 1999; 13(2):121-7JO

Abstract

AIM

The purpose of this study was to compare the variation in movement traces of the kinematic center of the temporomandibular joint with that of 4 nearby condylar reference points.

METHODS

Jaw movement recordings were made with an optoelectronic jaw movement recording system. Four asymptomatic participants performed 14 to 18 open-close mandibular movements. The movements were performed with deliberate alterations of the rotation/translation ratio during opening. The kinematic center of the condyle and 4 nearby condylar points (the corner points of a square placed in the condylar sagittal plane, centered around the kinematic center, and with an edge length of 10 mm) were used as reference points. The standard deviations in the downward displacements at the halfway point in the mandibular opening of these reference points were calculated as a quantification of the variation in the movement tracings of these points.

RESULTS

The movement traces of the kinematic center showed the smallest variation in comparison to the traces of the 4 nearby reference points (2-way analysis of variance and subsequent contrast analysis; P = 0.0026).

CONCLUSION

In comparison to 4 nearby condylar reference points, the movement traces of the kinematic center show the lowest sensitivity to variations in the way mandibular movements are performed.

Authors+Show Affiliations

Department of Oral Function, Academic Centre for Dentistry Amsterdam (ACTA), The Netherlands. m.naeije@acta.nl

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10425984

Citation

Naeije, M, et al. "Variation in Movement Traces of the Kinematic Center of the Temporomandibular Joint." Journal of Orofacial Pain, vol. 13, no. 2, 1999, pp. 121-7.
Naeije M, Huddleston Slater JJ, Lobbezoo F. Variation in movement traces of the kinematic center of the temporomandibular joint. J Orofac Pain. 1999;13(2):121-7.
Naeije, M., Huddleston Slater, J. J., & Lobbezoo, F. (1999). Variation in movement traces of the kinematic center of the temporomandibular joint. Journal of Orofacial Pain, 13(2), pp. 121-7.
Naeije M, Huddleston Slater JJ, Lobbezoo F. Variation in Movement Traces of the Kinematic Center of the Temporomandibular Joint. J Orofac Pain. 1999;13(2):121-7. PubMed PMID: 10425984.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Variation in movement traces of the kinematic center of the temporomandibular joint. AU - Naeije,M, AU - Huddleston Slater,J J, AU - Lobbezoo,F, PY - 1999/7/30/pubmed PY - 1999/7/30/medline PY - 1999/7/30/entrez SP - 121 EP - 7 JF - Journal of orofacial pain JO - J Orofac Pain VL - 13 IS - 2 N2 - AIM: The purpose of this study was to compare the variation in movement traces of the kinematic center of the temporomandibular joint with that of 4 nearby condylar reference points. METHODS: Jaw movement recordings were made with an optoelectronic jaw movement recording system. Four asymptomatic participants performed 14 to 18 open-close mandibular movements. The movements were performed with deliberate alterations of the rotation/translation ratio during opening. The kinematic center of the condyle and 4 nearby condylar points (the corner points of a square placed in the condylar sagittal plane, centered around the kinematic center, and with an edge length of 10 mm) were used as reference points. The standard deviations in the downward displacements at the halfway point in the mandibular opening of these reference points were calculated as a quantification of the variation in the movement tracings of these points. RESULTS: The movement traces of the kinematic center showed the smallest variation in comparison to the traces of the 4 nearby reference points (2-way analysis of variance and subsequent contrast analysis; P = 0.0026). CONCLUSION: In comparison to 4 nearby condylar reference points, the movement traces of the kinematic center show the lowest sensitivity to variations in the way mandibular movements are performed. SN - 1064-6655 UR - https://www.unboundmedicine.com/medline/citation/10425984/Variation_in_movement_traces_of_the_kinematic_center_of_the_temporomandibular_joint_ DB - PRIME DP - Unbound Medicine ER -