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Hydroxyapatite showed better remineralization when compared to CPP-ACP and Tri-calcium phosphate.

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Avulsion and luxation account for up to 16% of all traumatic injuries in the permanent dentition and 7.2% of injuries in the primary dentition. A range of treatment options are available that can help conserve the tooth after a traumatic episode. There are, however, occasions where loss of the traumatized tooth is inevitable with special regard to avulsion injuries. replantation of teeth having doubtful long-term prognosis. Following the traumatic loss of an anterior tooth it is important that an immediate replacement is provided in order to avoid esthetic, masticatory and phonetic difficulties and to maintain the edentulous space to avoid arch length discrepancy. The loss of an anterior tooth in a child or young adolescent may present a difficult prosthetic problem.3 This problem can be managed in several ways. This article reports utilization of the avulsed tooth as part of fixed semi-permanent bridge.

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