This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Tanaka, E. Articles by Tanne, K. Search for Related Content PubMed PubMed Citation Articles by Tanaka, E. Articles by Tanne, K. Social Bookmarking                         What's this?

The Frictional Coefficient of the Temporomandibular Joint and Its Dependency on the Magnitude and Duration of Joint Loading

Department of Orthodontics and Craniofacial Developmental Biology and
³ Department of Oral Maxillofacial Pathobiology, Hiroshima University Graduate School of Biomedical Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan;
¹ Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Osaka, Japan; and
² Department of Functional Anatomy, ACTA, Amsterdam, The Netherlands; Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan;

View larger version (25K): [in this window] [in a new window]   Figure 1. Schematic illustration of the pendulum-type friction tester and a sample of damping curve recorded by the three-dimensional dynamic angle-sensor. The total compressive load was 50 N or 80 N, and the initial swing was approximately 5°, which was commenced immediately after the load was set. By the three-dimensional dynamic angle-sensor, three angular velocities and three angles are measured round three axes, i.e., a roll, a pitch, and a yaw axis. From the total six measurements obtained, the three-dimensional movements of the condyle along the articular surface were calculated.

View larger version (17K): [in this window] [in a new window]   Figure 2. Means and standard deviations of the frictional coefficients for the TMJ after 5 sec, 5 min, 10 min, 20 min, 40 min, and 1 hr of stationary loading duration, with 50 N and 80 N compressive loadings. Error bars are standard deviations (for each group, n = 10). *Significance of difference between the values (p < 0.01) as tested with Scheffé’s test. p < 0.0001 compared with the frictional coefficient at 5 min, 10 min, 20 min, 40 min, and 1 hr. White bars = 50 N; black bars = 80 N.

Journal of Dental Research, Vol. 83, No. 5, 404-407 (2004)
DOI: 10.1177/154405910408300510


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?