评估 826 个下颌后窝中深舌凹的频率。
Assessing the frequency of deep lingual concavities in 826 posterior mandible sockets.
机构信息
Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
出版信息
J Craniomaxillofac Surg. 2020 Nov;48(11):1045-1051. doi: 10.1016/j.jcms.2020.09.001. Epub 2020 Sep 12.
PURPOSE
To evaluate the frequency of deep lingual concavities in the lower jaw, which can cause surgical complications while inserting dental implants.
METHODS
Cross-sections of the mandible alveolar ridge at the edentulous sockets were obtained via cone-beam computed tomography. Measurements were carried out using the freeware 'IC Measure' and based on the basic definitions of a previous study.
RESULTS
Most (767/826 = 93%) sockets had concavities of various degrees (30-90°), while 59 (7%) sockets had no concavity. However, the majority of the concavities (71%) were mild, with angles > 60°. The other 220 (26%) sockets had deeper concavities of <60°; among these, 12 (1%) had extremely deep concavities of <40°.
CONCLUSIONS
Only a few cases have deep lingual concavities that pose a high risk for lingual plate perforation during dental implantation.
目的
评估下颌骨中深层舌侧凹陷的频率，这些凹陷在植入牙种植体时可能导致手术并发症。
方法
通过锥形束计算机断层扫描获得无牙牙槽嵴的下颌骨横断面。使用免费软件“IC Measure”进行测量，并基于先前研究的基本定义进行测量。
结果
大多数（767/826=93%）牙槽窝有不同程度的凹陷（30-90°），而 59 个（7%）牙槽窝没有凹陷。然而，大多数凹陷（71%）为轻度，角度>60°。另外 220 个（26%）牙槽窝有较深的凹陷<60°；其中，12 个（1%）有非常深的凹陷<40°。
结论
只有少数情况下存在深层舌侧凹陷，这些凹陷在牙种植时可能导致舌板穿孔的风险较高。
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