国产日韩欧美天堂_91久久国产情侣真实对白_国产真实乱XXX视频_h纯肉无遮掩3d动漫免费网站_a黄色片免费观看_伊人导航福利大全_亚洲色在线播放_激情文学视频一区_夜夜躁狠狠躁日躁了无弹窗_蜜桃成人免费视频在线播放

Indications:

Unilateral or bilateral free ends are missing, especially suitable for patients with small buccal-lingual diameters, long distances or small vertical distances;

The undercut of the fixed restoration abutment is too large, and the patient is reluctant to extract the ridge and grind more tooth tissue.

Precision attachment is a restoration method between fixed restoration and movable restoration. There is no snap ring, and adjacent teeth need to be involved, which requires high manufacturing process and is expensive.