• The korean journal of orthodontics
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• v.32 no.4 s.93
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• pp.257-264
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• 2002

If dental ankylosis occurs in maxillary incisors of a growing child, the ankylosed tooth can not move vertically with the subsequent disturbance in vertical growth of the alveolar process. Because ankylosed tooth does not respond orthodontic force, extraction was recommended in the past. But the loss of tooth and accompaning alveolar bone loss incur compromised esthetic situation. And it is very hard to replace by prosthetics. So intentional surgical luxation and orthodontic movement was attempted, but usually this approach is followed by recurrence of the ankylosis. Nowadays the unitooth subapical osteotomy and rapid movement of block bone was reported. Two cases we presented, one is treated by intentional luxation and the other is by unitooth subapical osteotomy following application of light continuous force soon.

• Journal of the korean academy of Pediatric Dentistry
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• v.30 no.3
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• pp.465-470
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• 2003

Transverse and oblique crown-root fractures constitute a major therapeutic problem, particularly in young dentitions. Because crown-root fracture may involve enamel, dentin, pulp, and periodontal tissues, management of the injuries must be modified accordingly. When the fracture line was located under the alveolar crest. there are several methods for crown-root fractured teeth with pulp exposure, such as extruding the root fragment with orthodontic force and restoring it, or intentionally extracting the tooth and replanting it to a position which it can be restored. This case, the fractured tooth is intentionally extracted atraumatically, and replanted by rotating approximately 180 degree into the original socket and fixing with an orthodontic wire. At the 8-month recall examination, the root still showed normal mobility and there was not observed any inflammatory or replacement root resorption in the periapical radiograph.

• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.4
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• pp.575-582
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• 2001

There have been many treatment methods for traumatic subgingival crown fracture and intrusion without spontaneous eruption. The orthodontic forced eruption generally results in favorable clinical findings than crown lengthening with osteotomy and intentional replantation. In first two cases with subgingival crown fracture due to trauma, authors applied orthodontic forced eruption with axed appliance after root canal therapy and then restored them with composite resin. In another case with traumatic intrusive luxation, we observed spontaneous eruption of the corresponding tooth for about 6 months and then returning it to normal position by forced eruption with removable appliance, but root canal filling was conducted after apexification due to devitalization during forced eruption, and so clinically favorable results were obtained.