下顎第二小臼歯にみられた歯内歯の歯内療法

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  • Endodontic Therapy for Dens Invaginatus in a Mandibular second Premolar

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Dens invaginatus is called dens in dente, the developed tooth being abnormal and rarely observed in the mandibular teeth, but dens invaginatus has been reported in some mandibular incisors and premolars. A 12 year 7 month old girl visited our clinic with a complaint of gingival swelling in the region of her mandibular right premolar. Periapical radiographs, CT radiographs and clinical examination revealed dens invaginatus present in the mandibular right second premolar, as well as periradicular radiolucency. The tooth was treated with endodontic instrumentation and obturation, followed by coronal restoration using a glass ionomer base, and an occlusal composite resin. Due to their abnormal anatomical configuration, canal accessibility of invaginated teeth is difficult technically. It is important to prevent the bacterial infection of the dental pulp by the sealant, to do follow-up observations, and to render endodontic therapy as early as possible at the time of the pulpal infection.

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