国外专家再一次强调,吮吸可以让孩子安静下来,但是长时间地含着奶嘴却是有害的。因为含奶嘴时,不是舌头而是奶嘴顶在上颚处,会导致上颚不能正常发育。此外,长时间含着的奶嘴起到了一把“铁锨”的作用:上面一排牙齿向外凸,而下面一排牙齿将向内凹。最后,上下牙齿之间还会形成缝隙,这样,当孩子张嘴说话的时候,舌头会自动前伸向两排牙齿之间的缝隙,导致孩子口齿不清。 Foreign experts once again stressed that sucking can make the child quiet, but for a long time with a pacifier is harmful. Because with nipple, not the tongue but the nipple at the top of the jaw, can cause the upper jaw can not be normal development. In addition, the nipple that has been used for a long time functions as a “tuna”: the teeth in the upper row are convex and the teeth in the lower row are recessed. Finally, there is a gap between the upper and lower teeth, so that when the child speaks, the tongue will automatically extend forward to the gap between the two rows of teeth, causing the child’s speechless.