Results: When preparing PFM shoulder, "the plane entering method" made the gingival hemorrhage distinctly, and yet "the spot entering method" made the gingiva perfect. 结果:肩台制备时,面式进入法组牙龈出血明显,点式进入法组牙龈无出血现象;金属烤瓷冠初戴后,面式进入法组牙龈炎发病率明显高于点式进入法组。
16 menostaxis and hypermenorrhea, 6 gingival bleeding, 4 subcutaneous hemorrhage, 4 ecchymoma, the others normal. 16例有月经增多、经期延长史,6例有牙银出血史,4例有皮下出血点,4例皮下瘀血癍史,其余均正常。