Effects of a Liquid Diet on Temporomandibular Joint Mechano-receptors

被引:12
作者
Ishida, T. [1 ]
Yabushita, T. [1 ]
Soma, K. [1 ]
机构
[1] Tokyo Med & Dent Univ, Dept Orofacial Dev & Funct, Div Oral Hlth Sci, Grad Sch,Bunkyo Ku, Tokyo 1138549, Japan
关键词
TMJ mechano-receptor; development; mastication; early development; SENSORY NEURONS; JAW; MECHANORECEPTORS; GROWTH; REFLEX;
D O I
10.1177/0022034508328626
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Load during mastication is an important factor for the development and maintenance of mechanoreceptor properties. The purpose of this study was to examine property changes in the rat TMJ mechano-receptors under conditions of liquid diet feeding and low articular load during the growth period. The hypothesis was that alterations in mastication of liquid diet might increase TMJ mechano-receptor sensitivity. Sixty-six two-week-old male Wistar rats were divided into two groups: a control group that was fed on whole pellets, and an experimental group that was fed a liquid diet. Electrophysiological recordings from the TMJ units were obtained from the trigeminal ganglion when the rats were 5, 7, and 9 weeks old. In the experimental group, TMJ mechanoreceptor sensitivity increased, because the firing threshold gradually decreased and the maximum instantaneous frequency gradually increased. In conclusion, functional properties of TMJ mechano-receptors under low articular loading conditions cannot mature normally within the growth period.
引用
收藏
页码:187 / 191
页数:5
相关论文
共 31 条
  • [1] Alberts B., 2002, MOL BIOL CELL, P615
  • [2] Mechanosensitive ion channels in cultured sensory neurons of neonatal rats
    Cho, HW
    Shin, J
    Shin, CY
    Lee, SY
    Oh, U
    [J]. JOURNAL OF NEUROSCIENCE, 2002, 22 (04) : 1238 - 1247
  • [3] Development of chewing in children from 12 to 43 months: Longitudinal study of EMG patterns
    Green, JR
    Moore, CA
    Ruark, JL
    Rodda, PR
    Morvee, WT
    VanWitzenburg, MJ
    [J]. JOURNAL OF NEUROPHYSIOLOGY, 1997, 77 (05) : 2704 - 2716
  • [4] REFLEX INNERVATION OF TEMPORO-MANDIBULAR JOINT
    GREENFIE.BE
    WYKE, B
    [J]. NATURE, 1966, 211 (5052) : 940 - &
  • [5] STRETCH-ACTIVATED SINGLE ION CHANNEL CURRENTS IN TISSUE-CULTURED EMBRYONIC CHICK SKELETAL-MUSCLE
    GUHARAY, F
    SACHS, F
    [J]. JOURNAL OF PHYSIOLOGY-LONDON, 1984, 352 (JUL): : 685 - 701
  • [6] HERRING SW, 1985, AM ZOOL, V25, P339
  • [7] THE EFFECT OF OCCLUSAL LOSS ON NORMAL AND PATHOLOGICAL TEMPOROMANDIBULAR JOINTS - AN ANIMAL STUDY
    ISHIMARU, JI
    HANDA, Y
    KURITA, K
    GOSS, AN
    [J]. JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY, 1994, 22 (02) : 95 - 102
  • [8] ITO G, 1988, ANAT ANZEIGER, V165, P151
  • [9] Kanemura N., 2002, Journal of Physical Therapy Science, V14, P27
  • [10] TEMPOROMANDIBULAR-JOINTS SENSORY MECHANISMS CONTROLLING ACTIVITIES OF JAW MUSCLES
    KAWAMURA, Y
    MAJIMA, T
    [J]. JOURNAL OF DENTAL RESEARCH, 1964, 43 (01) : 150 - &