上颌磨牙颊面由于颊部靠着牙而以致牙刷不易刷到,特别是张大口时更是如此,要使牙刷插进去,应当在合口时,使上下牙齿微微离开,下颌转向被刷的一侧,将牙刷滑进去再刷。建议合口使上下牙微离开的原因是要促使肌肉松弛,减低颊组织的张力。如牙齿接 The maxillary molars buccal surface due to the cheek by the teeth so that the toothbrush is not easy to brush, especially when the mouth is even more so, to make the toothbrush inserted, should be in the mouth, the upper and lower teeth slightly away from the jaw turned to be brush one Side, slide the brush into the brush. The reason why the mouthpiece is made to allow the upper and lower teeth to leave slightly is to encourage muscle relaxation and reduce the tension of the buccal tissue. Such as dental connection