Inoue N, Sakashita R, Kamegai T
Department of Oral Surgery, Branch Hospital, University of Tokyo, Japan.
Early Hum Dev. 1995 Aug 18;42(3):185-93. doi: 10.1016/0378-3782(95)01649-n.
Our previous studies suggested that there are significant differences in the growth of the jaw and in muscle activity between breast- and bottle-fed infants. To confirm these differences quantitatively, myoelectric activities of the masseter muscles of bottle-fed babies were studied. Twelve bottle-fed babies, as well as 12 breast-fed babies as a control group, were examined electromyographically during bottle or breast feeds. The duration time of sucking bursts, interval time, cycle time, 0-to-peak amplitude, integrated amplitude of bursts, and integrated amplitude/duration time were measured and the number of bursts over 30 microV was counted. All differences of means were significant by t-test. The masseter muscle activity in bottle-fed babies is significantly reduced. Our results are contrary to previous papers in which almost the same sucking actions in both breast and bottle feeding were reported. The reason why previous researchers thought that the sucking patterns in breast- and bottle-fed babies are essentially the same is considered, and the implications of the differences for dental health are discussed.
我们之前的研究表明，母乳喂养和奶瓶喂养的婴儿在颌骨生长和肌肉活动方面存在显著差异。为了定量确认这些差异，我们对奶瓶喂养婴儿的咬肌肌电活动进行了研究。对12名奶瓶喂养婴儿以及作为对照组的12名母乳喂养婴儿在奶瓶喂养或母乳喂养期间进行了肌电图检查。测量了吸吮爆发的持续时间、间隔时间、周期时间、零至峰值幅度、爆发的积分幅度以及积分幅度/持续时间，并统计了超过30微伏的爆发次数。通过t检验，所有均值差异均具有显著性。奶瓶喂养婴儿的咬肌活动显著降低。我们的结果与之前报道母乳喂养和奶瓶喂养中几乎相同吸吮动作的论文相反。我们考虑了之前研究人员认为母乳喂养和奶瓶喂养婴儿的吸吮模式基本相同的原因，并讨论了这些差异对牙齿健康的影响。
