School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi Province, China.
Dent Traumatol. 2011 Apr;27(2):152-5. doi: 10.1111/j.1600-9657.2010.00962.x. Epub 2011 Feb 1.
This case series describes observations of 12 patients who developed horizontal root fractures in non-endodontically treated teeth. Using clinical and radiographic examination, horizontal fractures were observed in eight maxillary first molars, one maxillary second molar, one mandibular first premolar and four mandibular second premolars. A total of 12 teeth had clinically intact crowns and 2 had carious. Eight fractures of maxillary molars occurred in the palatal roots, while one fracture was observed in the distobuccal root. Eleven patients experienced pain from the affected teeth during mastication. Within the limits of this case series, it was concluded that these fractures were related to; root morphology, damaging masticatory habits and excessive occlusal forces.
本病例系列描述了 12 名患者的观察结果，这些患者的非根管治疗牙齿发生了水平根折。通过临床和影像学检查，在上颌第一磨牙、上颌第二磨牙、下颌第一前磨牙和下颌第二前磨牙中观察到 8 例水平根折。共有 12 颗牙齿的牙冠完整，2 颗牙齿有龋坏。上颌磨牙的 8 个根折发生在腭根，而 1 个根折发生在远颊根。11 名患者在咀嚼时感到受影响的牙齿疼痛。在本病例系列的范围内得出结论，这些根折与;牙根形态、损伤性咀嚼习惯和过大的咬合力量有关。
