口腔溃疡是较常见的口腔病损,目前其病因尚不十分清楚,过去曾认为可能是由于感染病毒、免疫功能受损、创伤等原因引起。笔者根据有关理论试制了硫酸锌涂膜剂,治疗口腔溃疡、口腔炎、复发性口疮 Oral ulcer is a more common oral lesion, the cause is not yet very clear, in the past that may have been due to infection with the virus, impaired immune function, trauma and other causes. The author trial based on the theory of zinc sulfate coating agent, the treatment of oral ulcers, stomatitis, recurrent aphthous