Objective Discuss Cause of the senile root caries in oral to find the effective preventive measure.

目的探讨老年人牙根面龋的发生因素,以期能找到有效的预防措施.

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Objective: To analyze relations of mat surface and risk factors of root caries.

摘要目的:分 析根面龋与根面易感性的关系.

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As indigenous oral bacteria, the Actinomyces are thought to contribute to caries especially to root caries.

放线菌是口腔固有菌群中的主要菌属,与龋病尤其是根龋的发生、发展有密切关系.

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