To assess the effectiveness of oral health education on oral health-related knowledge and attitudes of caregivers of children with hearing impairment and its impact on the oral health status of their children.

中文翻译：

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口腔健康教育对听力障碍儿童护理人员口腔健康相关知识和态度的有效性评估。

评估口腔健康教育对听障儿童看护人口腔健康相关知识和态度的有效性及其对儿童口腔健康状况的影响。