Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures.
Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures.
复制标题
纵向牙根骨折中骨折部位和桩长度的比较。
DOI：
10.1016/j.joen.2014.09.017
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M Kawamami.
中科院分区：
文献类型：
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作者：
T Sugaya;M Nakatsuka;K Inoue;S Tanaka;H Miyaji;R Sakagami;M Kawamami.
比较颈椎和根尖骨折的流行病学可能有助于了解垂直根骨折的原因和风险。我们的目的是确定不同骨折部位垂直根骨折的频率，以及骨折部位与骨折方向和桩长之间的关系。方法对诊断为牙根垂直骨折的患者进行回顾性调查，包括患者的年龄、性别、牙型、牙纵轴方向的骨折区域、骨折部位和是否有牙柱。纵向轴向骨折区域分为不完全骨折、完全骨折和不确定骨折。不完全骨折进一步分为发源于颈椎的骨折、发源于中部的骨折和发源于根尖的骨折。员额是根据员额的损失和员额的长度来评价的。结果颈椎和根尖骨折发生率相同，而中部骨折发生率极低。在颈椎骨折中，36.2%发生在内侧和/或远端，57.4%发生在颊部和/或舌部。在根尖区发生的骨折中，90.8%发生在颊部和/或舌部。骨折起源于根尖区域的病例数随着桩长的增加而减少。结论颈椎骨折和根尖骨折的骨折部位和桩长差异较大，提示颈椎骨折和根尖骨折的危险因素不同。
IntroductionComparing the epidemiology of fractures originating in the cervical and apical regions may help to understand the causes and risk of a vertical root fracture. We aimed to determine the frequency of vertical root fractures in different fracture sites and how the fracture site relates to fracture direction and post length.MethodsTeeth diagnosed with a vertical root fracture were retrospectively surveyed for age and sex of the patient, type of tooth, a fracture region in the longitudinal axial direction, site of the fracture, and presence of a post. The fracture region in the longitudinal axial direction was classified as an incomplete fracture, complete fracture, and uncertain. Incomplete fractures were further classified into a fracture originating in the cervical region, a fracture originating in the midregion, and a fracture originating in the apical region. Posts were evaluated by loss of post and length of post.ResultsFractures originating in the cervical and apical region occurred around the same frequency, whereas fractures originating in the midregion were extremely scarce. Of the fractures originating in the cervical region, 36.2% were in a mesial and/or distal site and 57.4% in a buccal and/or lingual site. Of the fractures originating in the apical region, 90.8% were in the buccal and/or lingual site. The number of cases of fractures originating in the apical region decreased with increased post length.ConclusionsSites of fracture and post length differed greatly between fractures originating in the cervical region and the apical region, suggesting that risk factors for fractures originating in the cervical and apical regions are different.