Langenbach G E J, van Wessel T, Brugman P, van Eijden T M G J
Department of Functional Anatomy, Academic Center for Dentistry Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands.
J Dent Res. 2004 Jan;83(1):55-9. doi: 10.1177/154405910408300111.
The daily use of masticatory muscles remains largely unclear, since continuous recordings were limited in space and time. This study's purpose was to use radio-telemetry to examine daily muscle use and its inter- and intra-individual variations. A telemetric device was implanted into the rabbit masseter, and the transmitted signals were digitally stored for 7 days. Muscle use was analyzed by calculation of the total time each muscle was activated above 5, 20, and 50% of the day's peak activity. Rabbits (n = 6) spent only 2% of the time chewing. Muscles were activated up to 20% of the total time at levels exceeding 5% of peak activity, and only about 0.5% of the time in forceful behaviors utilizing 50% of maximum contraction. It can be concluded that daily muscle use remained constant during succeeding days, but differed significantly among muscle regions and individuals.
由于连续记录在空间和时间上存在限制，咀嚼肌的日常使用情况在很大程度上仍不清楚。本研究的目的是使用无线电遥测技术来检查肌肉的日常使用情况及其个体间和个体内的差异。将一个遥测装置植入兔的咬肌中，并将传输的信号进行数字存储7天。通过计算每块肌肉在一天中峰值活动的5%、20%和50%以上被激活的总时间来分析肌肉的使用情况。兔子（n = 6）仅花费2%的时间咀嚼。肌肉在超过峰值活动5%的水平下被激活的时间占总时间的20%，而在使用最大收缩力50%的强力行为中仅占约0.5%的时间。可以得出结论，在随后的几天中，肌肉的日常使用情况保持不变，但在肌肉区域和个体之间存在显著差异。
