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김유석,황규영,정승우 조선대학교 구강생물학연구소 2003 Oral Biology Research (Oral Biol Res) Vol.27 No.1
The free gingival graft has proven to be a predictable procedure for obtaining an increased width of attached gingiva, concomitantly increasing vestibular depth and eliminating the tension of an abnormal frenulum, and root coverage. The free gingival grafts is needed when the patient experiences discomfort during toothbrushing due to gingival recession and chewing due to an interfering lining mucosa and/or when the margin of restoration is placed in a subgingival position at sites with a thin gingiva that may favor an inflammatory tissue reaction in the presence of subgingival plaque. In this study, two patients were treated by the free gingiva1 grafts. One patient had no attached gingiva at lower left 2nd premolar, 2nd molar which were treated subgingival restoration and more inflammatory. The free gingival grafts were performed in this sites. The 1-2㎜ attached gingiva were obtained and maintained after 4monthes. The other had 3-4㎜ gingival recession at lower left 1st, 2nd premolar and experiences discomfort during toothbrushing, cold hypersensitivity. The free gingival grafts were performed in this sites. The 2-3㎜ root coverage were obtained and maintained after 30 months. The free gingival graft for increasing width and thickness of gingiva can be performed in case of subgingival restorations , gingival recession.
지숙,정승우,황규영 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1
Vertical root fractures have been described as longitudinally oriented fractures of the root, extending from the root canal to the periodontium. They usually occur in endodontically treated teeth, although occurrence in non-restored teeth has been described. It can traverse the root in different directions mesially/distally or facially/lingually and may or may not involve the pulpal chamber. If unrecognized, vertical root fractures can lead to frustration and inappropriate endodontic treatment. Diagnosis is sometimes difficult as there is often no single clinical feature which indicates that root fracture is present and sings and symptoms are often delayed. Vertical root fractures that involved the gingival sulcus/pocket area usually have a hopeless prognosis due to continuous bacterial invasion of the fracture space from the oral environment. Single-rooted teeth will have to be extracted. In multi-rooted teeth a treatment alternative is hemisection and extraction of the fractured root. Where successful outcomes of conservative treatment have been claimed, the long-term prognosis has yet to be proven. This study reviews the clinical characteristics, diagnostic signs, and possible causes of vertical root fractures and reports 3 cases of vertical root fractrues.