2004年5月
The frictional coefficient of the temporomandibular joint and its dependency on the magnitude and duration of joint loading
JOURNAL OF DENTAL RESEARCH
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 83
- 号
- 5
- 開始ページ
- 404
- 終了ページ
- 407
- 記述言語
- 英語
- 掲載種別
- 出版者・発行元
- INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R
In synovial joints, friction between articular surfaces leads to shear stress within the cartilaginous tissue, which might result in tissue rupture and failure. Joint friction depends on synovial lubrication of the articular surfaces, which can be altered due to compressive loading. Therefore, we hypothesized that the frictional coefficient of the temporomandibular joint (TMJ) is affected by the magnitude and duration of loading. We tested this by measuring the frictional coefficient in 20 intact porcine TMJs using a pendulum-type friction tester. The mean frictional coefficient was 0.0145 (SD 0.0027) after a constant loading of 50 N during 5 sec. The frictional coefficient increased with the length of the preceding loading duration and exceeded 0.0220 (SD 0.0014) after 1 hr. Application of larger loading (80 N) resulted in significantly larger frictional coefficients. In conclusion, the frictional coefficient in the TMJ was proportional to the magnitude and duration of joint loading.
- リンク情報
- ID情報
-
- ISSN : 0022-0345
- Web of Science ID : WOS:000226597500010