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J Calif Dent Assoc. 2000 Nov;28(11):846-54.

Decoronation: how, why, and when?

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Department of Paediatric Dentistry, Eastmaninstitutet, Stockholm, Sweden.


Decoronation is a surgical method for treating ankylosed incisors in children and adolescents. The crown and root filling are removed, leaving the root in situ to be resorbed and covered with a mucoperiosteal flap. Early loss of a permanent tooth leads to loss of alveolar bone, especially in buccopalatal width. Decoronation preserves not only the width of the ridge but also the vertical height.

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