气动抛光对不同牙体组织及牙科充填材料表面抗侵蚀能力的影响  

Effect of Air-polishing on Surface Wear Resistance of Different Dental Tissues and Dental Filling Materials

作　　者：陈苏蓉 陈盼 周耕宇 杜薇 马净植 韦健 Chen Surong;Chen Pan;Zhou Gengyu(Center of Stomatology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,China;School of Stomatology,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,China;Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration,Wuhan 430022,China)

机构地区：[1]华中科技大学同济医学院附属同济医院口腔医学中心,武汉430030 [2]华中科技大学同济医学院口腔医学院,武汉430030 [3]口腔颌面发育与再生湖北省重点实验室,武汉430022

出　　处：《华中科技大学学报（医学版）》2024年第2期196-201,共6页Acta Medicinae Universitatis Scientiae et Technologiae Huazhong

基　　金：国家自然科学基金资助项目(No.62171193)。

摘　　要：目的探讨不同气动抛光模式下牙体组织及牙科充填材料表面的抗侵蚀能力。方法按照工作距离及喷砂介质不同,分别设置了3 mm碳酸氢钠、3 mm甘氨酸、3 mm赤藓糖醇、3 mm氧化铝、5 mm碳酸氢钠、5 mm甘氨酸、5 mm赤藓糖醇、5 mm氧化铝8个气动抛光组,对玻璃离子、流体树脂、混合填料树脂、纳米树脂、大块流体树脂、大块膏体树脂、牙本质及牙釉质样本进行处理,在样本处理前后使用千分尺进行厚度测量,统计分析其表面结构损失量。同时,使用扫描电镜对处理后样本进行扫描,观察其表面形貌改变。结果氧化铝处理组中,无论工作距离是3 mm还是5 mm,均出现多个样本被击穿,故未纳入统计分析。其余处理组中,牙釉质表面最大损失量为13μm,牙本质最大损失量为99μm,玻璃离子最大损失量为222μm,流体树脂最大损失量为196μm,混合填料树脂最大损失量为228μm,纳米树脂最大损失量为93μm,大块流体树脂最大损失量为324μm,大块膏体树脂最大损失量为126μm。在3种砂粉中,碳酸氢钠在大多数情况下对材料的损害大于另外两种砂粉。纳米树脂在除5 mm碳酸氢钠组外的其余所有气动抛光条件下均表现出与牙釉质类似的表面抗侵蚀能力,表面损失量无统计学差异(均P>0.05)。结论气动抛光介质均会对牙体组织及牙科充填材料表面造成损伤。使用气动抛光技术时,不同充填材料表现出不一样的表面抗损伤能力。Objective To investigate the surface wear resistance of dental tissues and dental filling materials under different air-polishing conditions.Methods Eight air-polishing groups were set according to different working distances and sandblasting powders,which were 3 mm sodium bicarbonate,3 mm glycine,3 mm erythrolitol,3 mm alumina,5 mm sodium bicarbonate,5 mm glycine,5 mm erythrolitol and 5 mm alumina,respectively.Samples of glass ionomer,flowable resin,hybrid composite resin,nano-filler composite resin,bulk-fill flowable composite,bulk-fill composite resin,dentin and enamel were processed.The thickness of the samples was measured by micrometer before and after processing,and the surface loss was statistically analyzed.At the same time,scanning electron microscopy(SEM)was used to analyse the changes of surface morphology.Results In the alumina treatment group,a large number of samples were broken down regardless of whether the working distance was 3 mm or 5 mm.In the other treatment groups,the maximum losses of enamel,dentin,glass ionomer,flowable resin,hybrid composite resin,nano-filler composite resin,bulk-fill flowable composite and bulk-fill composite were 13μm,99μm,222μm,196μm,228μm,93μm,324μm and 126μm,respectively.The surface wear resistance of the nano-filler composite resin was similar to that of tooth enamel under all air-polishing conditions except in the 5 mm sodium bicarbonate group,and there was no significant difference in surface loss(P>0.05).Conclusion Air-polishing can damage the tooth tissue and the surface of dental filling materials.Different dental filling materials show different surface wear resistance under air-polishing.

关 键 词：气动抛光 牙科充填材料 复合树脂 

分 类 号：R783.3[医药卫生—口腔医学]