水平根折的治疗：一例报告。

Cantore Stefania, Ballini Andrea, Crincoli Vito, Grassi Felice Roberto

Department of Dental Sciences and Surgery, University of Bari P.zza Giulio Cesare n.11, Bari, 70124 Italy.

Cases J. 2009 Jun 19;2:8101. doi: 10.4076/1757-1626-2-8101.

Radicular fractures in permanent teeth are uncommon injuries among dental traumas, being only 0.5-7% of the cases. Traumatic dental injuries occur more frequently in young patients, and vary in severity from enamel fractures to avulsions.The magnitude of these problems is confirmed by statistical data on the prevalence of dental trauma during childhood and adolescence.Fracture occurs often in the middle-third of the root and rarely at the apical-third. The present paper reports a clinical case of a horizontal radicular fracture located between the middle- and apical-third of a upper left-central incisors followed-up over 4 years.

恒牙的根折在牙外伤中是较为少见的损伤，仅占病例的0.5%-7%。牙外伤在年轻患者中更为常见，严重程度从釉质骨折到牙齿完全脱出不等。儿童和青少年时期牙外伤患病率的统计数据证实了这些问题的严重性。骨折常发生在牙根的中三分之一处，很少发生在根尖三分之一处。本文报告了一例左上中切牙牙根水平折裂位于牙根中三分之一与根尖三分之一之间的临床病例，并进行了4年的随访。