Methods: 63 anterior abutment free gingiva were observed with naked eye before and after restoration. 方法:肉眼观察63颗前牙在修复前后游离龈的色泽变化。
The Experimental Study Of Free Graft Of Gingiva 游离牙龈移植的实验研究
Clinic observation on discoloration in free gingiva of 63 anterior abutments after cementing of porcelain fused to metal crown 63颗前牙金属烤瓷冠粘戴后基牙游离龈变色的临床观察
Conclusion: This phenomenon is of reversible and inevitable optical nature because of the light transmission of the free gingiva and the existence of metal base crown which blocks the lights from the internal tooth structure and darkens the root. 结论:由于游离龈的光透过性及金属基底冠对牙根的阻光作用,基牙游离龈变色是一种不可避免的可逆光学现象。
Mucosa flap was moved towards the vestibular groove and sutured to the periosteum with absorbable suture so that the free end of keratinized gingiva was apically positioned beneath adjacent normal mucogingival junction. 将粘膜瓣向前庭沟方向滑行,使游离端角化牙龈根向复位至邻牙正常膜龈联合根方,并用可吸收线将其缝合于骨膜固定,然后缝合近远中附加切口。