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KMID : 0358920080350020305
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Journal of the Korean Academy of Pedodontics
2008 Volume.35 No. 2 p.305 ~ p.312
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SURGICAL EXTRUSION OF THE CROWN-ROOT FRACTURED INCISORS: CASE REPORTS
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Lee Eun-Mi
Kim Hyun-Jung
Nam Soon-Hyeun
Kim Tae-Wan
Kim Young-Jin
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Abstract
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Crown-root fractures occur throughout both crown and root, and are defined as fractures involving enamel, dentin and cementum. The fractures may be grouped according to pulpal involvement into complicated and uncomplicated one. Crown-root fractures often occur on maxillary anterior teeth and comprise 5% of injuries affecting the permanent dentition and 2% in the primary dentition. To restore crown-root fractured tooth, biologic width must be maintained. For maintaining biologic width, such methods as gingivectomy following osteoplasty or orthodontic extrusion or surgical extrusion are available. Surgical extrusion is a method that extracts the tooth and replants the fractured tooth supragingivally. It is indicated when the length of the crown fragment is less than half the length of the clinical root. In these cases, root canal treatment and crown restoration using light-cured composite resin were performed after surgical extrusion. In following periodic examinations, favorable outcome was observed.
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KEYWORD
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Surgical extrusion, Crown-root fractures, Immature root, Maxillary central incisor
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