齿龈

A parulis, or gum boil, may be present near the involved tooth.

在患病牙附近可见脓肿或疖。

If the brush is furcated or evaginable, it needs to be replaced in case of damaging the tooth-ridge.

如刷毛分叉、外翻应及时更换，伤孩子的。

The light microscope was used to observe the hesion from gums of teeth and focus of infection.

消毒牙签取受检者口腔上或病灶面附着物，生理盐水涂片，光学显微镜下观察。

It is pronounced by raising the tongue tip against the upper teethridge to block the air and then putting it down to release the air.

舌尖顶住上，住气流，然后移下舌尖，放出气流。