The causes, clinical evaluation, and prevention of inferior alveolar nerve injury in the mandibular third molar extraction surgery

doi:10.3877/cma.j.issn.1674-1366.2023.06.004

Abstract

Abstract:

Inferior alveolar nerve (IAN) injury was mainly caused by the extraction of the mandibular third molar, and it is regarded as a difficult clinical problem since its symptoms including numbness, hypersensitivity, and pain influence the patients′ quality of life. This article reviewed the clinical signs, pathological changes, functional assessment, risk factors, and prevention progress of IAN injury in order to provide references for understanding its causes and pathological mechanisms, and developing its evaluation and clinical prevention strategies.

Key words: Mandibular third molar, Inferior alveolar nerve injuries, Tooth extraction

Jiashun Wu, Wei Sun, Guozhong Zeng, Yi Shen, Guangsen Zheng, Haikuo Tang. The causes, clinical evaluation, and prevention of inferior alveolar nerve injury in the mandibular third molar extraction surgery[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2023, 17(06): 394-399.

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References 43

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分级	描述
S0	感觉完全丧失
S1	神经支配区域存在深部痛觉
S2	存在一定程度表浅痛觉和触觉
S2+	存在表浅痛觉和触觉，但有感觉过敏
S3	存在表浅痛觉和触觉，无感觉过敏，两点辨别觉>15 mm
S3+	与S3相同，且感觉定位良好，两点辨别觉7 ~ 15 mm
S4	与S3相同，两点辨别觉<6 mm

分级	描述
S0	感觉完全丧失
S1	神经支配区域存在深部痛觉
S2	存在一定程度表浅痛觉和触觉
S2+	存在表浅痛觉和触觉，但有感觉过敏
S3	存在表浅痛觉和触觉，无感觉过敏，两点辨别觉>15 mm
S3+	与S3相同，且感觉定位良好，两点辨别觉7 ~ 15 mm
S4	与S3相同，两点辨别觉<6 mm

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