METHODS: Studying the tooth structure by scanning electron micrograph when we remove the caries with air - abrasion.

方法: 空气喷砂机去龋并制备洞形后,利用扫描电镜观察牙齿硬组织的组织学变化.

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COUCLUSION: The cavity which made with air - abrasion has more normal dentine and is suitable to resins.

结论: 空气喷砂机所制备洞形可保留更多正常牙质,有利于复合树脂材料的充填.

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Both increased after air abrasion.

既增加磨损后的空气.

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