【摘 要】
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INTRODUCTIONrnDental ankylosis is defined as a fusion of cementum or dentine with alveolar bone.1 Primary molar ankylosis can cause severe clinical consequences
【机 构】
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Melbourne Dental School, The University of Melbourne, Melbourne, Australia“,”Florey Institute of Neu
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INTRODUCTIONrnDental ankylosis is defined as a fusion of cementum or dentine with alveolar bone.1 Primary molar ankylosis can cause severe clinical consequences in the growing child, including:1-4 (1) Tooth infraocclusion and vertical bone defect, (2) Tipping of adjacent teeth into the space of infraocclusion, causing loss of arch space, dental asymmetry, midline deviation,4 and impaction of the ankylosed tooth and its successor, (3) Supra-eruption of opposing teeth, and (4) Deflected path of eruption of successors, with displacement in the form of tipping and ectopic eruption of successors.
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