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Journal of Dental Research
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Regional Dynamic Tensile Properties of the TMJ Disc

G.R. Snider, J. Lomakin, M. Singh, S.H. Gehrke and M.S. Detamore*

Department of Chemical and Petroleum Engineering, University of Kansas, 1530 W. 15th St., Room 4132, Lawrence, KS 66045-7609, USA


Figure 1
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  		Figure 1. Superior view of a right porcine TMJ disc. Specimens were obtained in the mediolateral direction (shading = //) from the anterior region, the intermediate zone, and the posterior region. Specimens were obtained in the anteroposterior direction (shading = \\) from the medial region, the central region, and the lateral region.

 

Figure 2
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  		Figure 2. Storage moduli (E') and loss moduli (E'') for a frequency sweep from 0.1 to 100 rad/sec. Values were noticeably lower in the intermediate zone across the frequency spectrum. Data are means ± standard deviations, n = 6.

 

Figure 3
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  		Figure 3. The loss tangents (tan {delta}) for a frequency sweep from 0.1 to 10 rad/sec (behavior erratic in some cases at higher frequencies due to lower storage moduli). Note that values were consistently higher in the posterior band and intermediate zone across the frequency spectrum. Data are means ± standard deviations, n = 6.

 

Figure 4
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  		Figure 4. The storage moduli (E'), loss moduli (E''), and loss tangents (tan {delta}) at 1 rad/sec and 10 rad/sec (mean ± standard deviation, n = 6). *Statistically significant difference compared with the intermediate zone at 1 rad/sec. +Statistically significant difference compared with the posterior band at 1 rad/sec. ANOVA did not detect significant differences for E'' data.

 

Journal of Dental Research, Vol. 87, No. 11, 1053-1057 (2008)
DOI: 10.1177/154405910808701112
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