A 38-year-old man has gingival erythema and edema associated with #23-25 bridge (Fig.1).  38岁男因牙龈出血就诊，除了深洗之外，下前牙桥（23-25）需要撤除，

Thin Crest     前磨牙即种   Last     Next

Xin Wei, DDS, PhD, MS 1st edition 04/09/2021, last revision 05/03/2021