Objective:To investigate the relation between the activity of saliva-sucrase and malignant change of oral cavity tumor.

目的：探讨唾液蔗糖酶活性与口腔肿瘤恶变之间的相互关系。

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Objectives:To study the classification of common tumor in the base of oral cavity and reasons of misdiagnosis.

目的：探讨口底区肿块常见病变种类与误诊原因。

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Abstract Objective to review the reconstruction for large defect after ablation of tumor in oral cavity or oral pharynx, and analyse the factors which effect the flap? Related complications.

摘要目的总结口腔口咽肿瘤切除后较大缺损的修复方法，讨论影响组织瓣相关并发症的因素。

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Abstract Objective to review the reconstruction for large defect after ablation of tumor in oral cavity or oral pharynx, and analyse the factors which effect the flap? Related complications.

摘要目的总结口腔口咽肿瘤切除后较大缺损的修复方法，讨论影响组织瓣相关并发症的因素。

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