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髓腔形态变异,临床以髓角异常和由于磨耗等生理性刺激;龋蚀、外伤等病理性刺激而使髓腔壁继发性牙本质沉积,髓腔缩小为常见。而整个髓腔形态变异呈圆球形,临床罕见。现将笔者遇到的1例报告如下: 患者张××,女,17岁,学生。因上颌前牙排列不齐而来我科要求正畸治疗。检查:11唇向错位,2舌向错位,前牙深覆(牙合)(?)°(?)基本中性(牙合)。1色泽如邻牙,叩诊(-),无龋蚀,不松动,牙髓活力测验正常。
Marrow cavity morphological changes, clinical abnormality due to the pulp and due to wear and other physiological stimuli; caries, trauma and other pathological stimulation of the medullary canal secondary dentin deposition, medullary cavity reduction is common. The shape of the entire marrow cavity was spherical, clinically rare. Now I encountered a report as follows: Patient Zhang × ×, female, 17 years old, student. Due to the alignment of the maxillary anterior teeth we ask orthodontic treatment. Check: 11 lip to the wrong place, 2 tongue misalignment, anterior deep overbite (?)? (?) Basic Neutral (occlusion). 1 color, such as adjacent teeth, percussion (-), no caries, not loose, normal pulp activity test.