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The purpose of this case report was to describe the procedures and prognosis of intracanal adhesive treatment and intentional replantation for maxillary molar with crown/root fracture. The case of a vital tooth with buccal and lingual fragments caused by crown/root fracture was presented. The involved tooth was extracted and stored in balanced salt solution. Following confirmation of the repositioning of two fragments, the fractured surfaces of fragments were cut with a diamond bar until the cementum side remained. Finally, a large cavity was preparedin pulp chamber and the root canals like shell form. For the purpose of reinforcement after adhesion, a U-shaped orthodontic wire was bended which straddles the palatal canal and buccal canal. After drying the cavity wall, the dentin surface was treated with dentin conditioner, and the dual curing composite resin and the wire were filled in the cavity. After apicoectomy and retro filling, the tooth was replanted to original tooth socket. The prognosis was preferable at 1 month later and the tooth was used for an abutment of fixed metal bridge. The tooth still worksin the mouth at the 3-year follow-up. Our results showed that intentional replantation after internal adhesive treatment with dual-cure resin and a metal wire is an effective and practical treatment for crown/root fracture of the maxillary molar.

Survive for split tooth by intracanal adhesive with intentional replantation.