下颌骨发育性缺损7例影像学分析

doi:10.3969/j.issn.1005-4979.2022.05.010

摘要/Abstract

摘要：

目的：回顾性分析下颌骨发育性缺损（Stafne bone cavity，SBC）患者的临床影像学资料，评价其骨缺损特点。方法：回顾我院2017年1月—2020年6月的 7例SBC病例，对其影像学资料进行分析。结果：7例SBC患者中男性6例，女性1例；均为单侧发生，4例位于右侧，3例位于左侧；7例均发生于下颌骨舌侧，其中1例缺损区颊侧骨皮质穿通，2例缺损区域波及下颌神经管；所有患者均无自觉症状。结论：SBC好发于下颌角处，多无临床症状，不需要行手术治疗，但应警惕因下颌骨薄弱区骨量减少，存在病理性骨折的可能。

关键词: 影像学分析, 下颌骨发育性缺损, 薄弱区

Abstract:

Objective: The radiographic features of patients with Stafne bone cavity(SBC) were retrospectively analyzed for evaluating the characteristics of bone defects. Methods: Radiographic data of 7 cases from January 2017 to June 2020 in our hospital were retrospectively selected and analyzed in this study. Results: Among 7 SBC cases, 6 cases occurred in male patients and 1 case occurred in female patient, unilaterally with 4 in the right mandible and 3 in the left mandible. All 7 cases occurred on the lingual side of the mandible. One case suffered with perforation of the buccal cortex in the defect area, and two cases suffered with mandibular cannal involved in the defect area. All patients had no symptoms. Conclusion: Most cases of SBC located at the mandibular angle, mostly asymptomatic, and did not require surgical treatment, but more attention should be paid on the possibility of pathological fracture due to the bone loss in weak area of mandible.

Key words: radiographic analysis, Stafne bone cavity, weak area

中图分类号:

R782

刘冬晓, 王伟. 下颌骨发育性缺损7例影像学分析[J]. 《口腔颌面外科杂志》, 2022, 32(5): 319-323.

LIU Dongxiao, WANG Wei. Radiographic features of Stafne bone cavity: Analysis of 7 cases[J]. 《Journal of Oral and Maxillofacial Surgery》, 2022, 32(5): 319-323.

https://journal06.magtech.org.cn/Jweb_joms/CN/Y2022/V32/I5/319

图/表 5

图1 下颌骨缺损的范围与其相同位置颌骨对比 A. 下颌骨缺损区深度及高度；B. 缺损区域下颌骨体的厚度及高度。

Figure 1 The comparison of the SBC extent and jaw at the same position

图2 影像资料显示下颌骨缺损未累及颊侧骨皮质及下牙槽神经 A. 横断面显示缺损未累及颊侧骨皮质；B. 冠状面显示缺损未累及下牙槽神经管壁。

Figure 2 Radiographs showed SBC were not involved the buccal cortex and the mandibular canal wall

图3 影像资料显示下颌骨缺损累及颊侧骨皮质及下牙槽神经 A. 横断面显示缺损累及颊侧骨皮质，但颊侧骨皮质未穿通；B. 冠状面显示缺损累及下牙槽神经管壁。

Figure 3 Radiographs showed SBC were involved the buccal cortex and the mandibular canal wall

图4 影像资料显示下颌骨缺损伴有颊侧骨皮质缺失 A. 横断面显示缺损累及颊侧骨皮质，并且部分颊侧骨皮质缺失；B. 冠状面显示缺损未累及下牙槽神经管壁。

Figure 4 Radiographs showed SBC was accompanied with buccal cortex defect

表1 SBC患者临床特点分布

Table 1 Distribution of clinical characteristics of patients with SBC

病例	性别	年龄/岁	部位	局部特征	下颌骨厚度缺损率/%	下颌骨高度缺损率/%	下颌骨缺损系数
1	女	42	左下颌	缺损区域位于下牙槽神经下方，与颊侧骨皮质接触，部分颊侧骨皮质缺如，下牙槽神经管壁完整	100.0	38.9	0.389
2	男	80	右下颌	缺损区域位于下牙槽神经下方，与颊侧骨皮质接触，下牙槽神经管壁完整	63.2	25.7	0.162
3	男	70	右下颌	缺损区域位于下牙槽神经下方，与颊侧骨皮质接触，部分下牙槽神经管下壁缺如	70.0	37.2	0.260
4	男	61	左下颌	缺损区域位于下牙槽神经舌侧下方，未与颊侧骨皮质接触，下牙槽神经管壁完整	26.1	15.7	0.041
5	男	51	左下颌	缺损区域位于下牙槽神经舌侧，未与颊侧骨皮质接触，下牙槽神经管壁完整	25.0	36.4	0.091
6	男	49	右下颌	缺损区域位于下牙槽神经舌侧下方，未与颊侧骨皮质接触，下牙槽神经管壁完整	56.3	29.2	0.164
7	男	61	右下颌	缺损区域位于下牙槽神经下方，与颊侧骨皮质接触，部分下牙槽神经管下壁缺如	50.0	35.8	0.179

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