Objective To investigate the curative effect of apexification treatment on pulpitis or periapical perodontitis of immature permanent teeth.Methods Apexification treatment with calvital and infectious control was applied to 28 immature permanent teeth from 24 patients with pulpitis or periapical periodontitis.The effect was evaluated on the basis of clinical curative criterion and the development of root apiex from X-ray taken in the follow-up.Result Among the teeth,17 showed complete apical developement,and calcific bridge over apical foramens formed in 9.The effective rate was 92.8%.Conclusion Apexification is an effective therapy for pulpitis or periapical periodontitis of immature permanent teeth.
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