树脂充填演示（3M z250）
1、树脂充填术术前准备
常用钻针，器械，材料
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下图为本次充填演示所用材料：3M自酸蚀粘结剂、lonosit光固化玻璃离子垫底材料、3M z250光固化树脂
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示范离体牙为左下8，咬合面点隙窝沟龋，深及牙本质深层。
诊断为左下8深龋。
治疗计划：去腐，制备1类洞，垫底，充填。
2、牙体充填前准备
牙齿洁治，打磨去除污秽层
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3、牙体预备，窝洞消毒
去除腐质，制备1类洞，制备洞缘斜面（可用球钻）。不必过分强调“底平壁直”，“预防性扩展”。冲洗后用酒精球消毒。
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4、垫底
用lonosit光固化玻璃离子垫底材料垫底，光照
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5、涂布粘结剂
调拌双组分的3M自酸蚀粘结剂，涂布充填洞壁15秒，吹干，涂布第二层，吹匀，光照。
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6、充填
将3M z250光固化树脂填入洞内（若洞深可分层充填），塑形，光照
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7、调整咬合，打磨抛光
选用适当的车针先消除咬合高点，修改外形，雕刻咬合面，注意适当增加点隙窝沟，牙尖，副脊以提高逼真感。
依次用不同粒度的抛光车针由粗到细打磨抛光。
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最后的效果：
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