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  • Title: Cemental Tear in an Autotransplanted Tooth That Had Been Functioning for 15 Years.
    Author: Nagata M, Kanie T, Shima K.
    Journal: Clin Adv Periodontics; 2016 Aug; 6(3):111-117. PubMed ID: 31535470.
    Abstract:
    INTRODUCTION: Cemental tears have been described as specific types of root surface fractures that are seen infrequently but can cause rapid collapse of the periodontal tissue. However, to the best of the authors' knowledge, cases of cemental tears in autotransplanted teeth and their recovery by autotransplantation have not been reported previously. This case report presents the clinical and histopathologic features of a rare case of a cemental tear that occurred on an autotransplanted tooth. This meant a total long-term treatment course of 20 years involving two separate treatment procedures. CASE PRESENTATION: In 1995, the mandibular left second molar of a 40-year-old woman was extracted, and autogenous tooth transplantation was performed simultaneously using a third molar from the same side. Good clinical and radiologic progress was observed for >10 years after tooth transplantation. After discovery of a vertical bone defect in the distal area in 2006, conservative periodontal treatment was conducted on the diseased periodontal pocket over the course of several years. In 2010, autogenous tooth transplantation and a subsequent histopathologic examination of the extracted tooth were performed. After recovery treatment, a 5-year follow-up examination provided good results. CONCLUSIONS: This case report concerns the suspected contributing factors of cemental tears and the recovery treatment. When cemental tears are suspected after radiographic and other clinical examinations, interventional surgical treatment should be performed immediately. When autogenous tooth transplantation is performed, following careful consideration of the advantages and disadvantages of appropriate treatment and proper selection, continuous monitoring should be a prerequisite because of the possible occurrence of cemental tear.
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