Browsing by Author "Yeh, Yu-Ting"

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    Amnion–Chorion Allograft Barrier Used on Root Surface for Regenerative Procedures: Case Report
    (Wiley, 2020-12) Hamada, Yusuke; Yeh, Yu-Ting; Blanchard, Steven B.; Periodontology, School of Dentistry
    Introduction Guided tissue regeneration (GTR) has been well documented with combination of bone graft substitutes and biologic modifiers to improve the outcomes of periodontal regenerative procedures. Amnion-chorion allograft membrane (ACM) is a placenta-derived resorbable allograft membrane which contains growth factors found in the placenta. The primary purpose of the barrier membranes for GTR was to exclude the epithelial down-growth along with the root surface, however, the ACM can be used as an additional biologic modifier because of the release of growth factors from the ACM after placement. The aim of this case report is to evaluate the efficacy and the application of ACM on the previously diseased root surface to treat periodontal intrabony defect. Case Presentation A 60-year-old Caucasian male with deep and wide intrabony defect on mesial #19 was treated with a regenerative procedure with combination of application of ACM on the root surface and filling the intrabony defect with the corticocancellous freeze-dried bone allograft. The bone substitute was covered with another layer of ACM and primary closure was achieved. Wound healing process was uneventful, and the clinical and radiographic outcomes were favorable up to 18 months after the surgical procedure. Conclusion This case report demonstrated that the application of ACM on the root surface with a combination of bone substitute might enhance to the radiographic bone fill and the clinical attachment level gain and minimize the risk of post-operative gingival recession.
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    Management of Recurrent Gummy Smile After 7 Years: A Case Report
    (2021) Yeh, Yu-Ting; Blanchard, Steven B.; Periodontology, School of Dentistry
    Esthetic crown lengthening is a periodontal surgical procedure to correct excess gingival display (ie, "gummy smile"). The procedure may require soft-tissue excision only, osseous resection, or a combination of both. However, the long-term healing responses, such as soft-tissue relapse or recession and hard-tissue regrowth and resorption, have not been fully reported in the literature. This case report describes the management of a patient with esthetic concerns about a gummy smile. The patient stated that the maxillary anterior area had been previously treated with periodontal surgery 7 years earlier but the condition had slowly recurred over time. The authors highlight the possible reasons for the recurrence and the keys to successfully managing the case.