Objective: To determine the cariogenic bacteria in deep dentinal caries.
〔摘要〕目的：探明牙本质深龋中的主要相关菌。
Results: Control group: the dentinal tubules lined up in disorder and irregularity.
结果：对照组：感染根管牙本质小管形态不规则，排列紊乱。
It was testified by sem that the dentinal tubule was sealed by semiconductor laser irradiation.
扫描电镜显示，用半导体激光仪照射后，牙本质小管口被封闭。
There were significant differences ( P< 0.05) in the relative area of the dentinal tubule orifices between two groups.
牙本质小管口的相对面积各组之间的差异均有显著性（P<0.05）。
Although irrigants of group 3 could remove smear layer effectively, it resulted in moderate erosion of dentinal tubules.
第3组虽然能有效去除玷污层，但会引起牙本质小管中度腐蚀。
Methods: the mechanism of cryotherapy for dentinal hypersensitivity and the dose of cryosurgery were studied in guinea pigs.
方法：通过动物实验了解冷冻治疗牙本质敏感的机制及优选冷冻剂量。
AIM:To evaluate the effect of early Fluor Protector application after non-surgical periodontal treatment on root dentinal hypersensitivity.
目的：评价氟保护漆应用于牙周非手术治疗后早期对根面牙本质敏感症的作用。
RESULT: The SEM pictures showed that the process formed a uniform layer covering and occluded with crystalloid substances in dentinal tubules.
结果：牙本质经化合物沉积法处理后，其表面牙本质小管开口被结晶状物质封闭。
NaF group also had significant root surface scratches, exposed dentinal tubules were partially closed and scattered finger-like structures are also visible on the root surface;
氟化钠组根面亦可见明显的划痕，暴露的牙本质小管部分被封闭，在根面可见大小不一散在的指状结构；
Conclusions Applying 30% supersaturated potassium oxalate to block dentinal tubule could prevent or reduce crown surface discoloration effectively after front teeth canal therapy.
结论使用30%草酸钾封闭牙本质小管可有效防止及减少前牙根管治疗后牙冠变色。
Characteristic: Xeno? III Single Step Self etching Dental Adhesive avoids sensitivity by sealing dentinal tubules and eliminating problems of over drying and over - etching of dentin.
特点：异种？三单步自腐蚀牙胶密封避免敏感的牙本质小管和消除问题的干燥和酸蚀牙本质。
Conclusion By adopting the root canal therapy together with the technologies of inner bleaching and seal dentinal tubule we can prevent and cure crown surface discoloration effectively.
结论在根管治疗的同时结合内漂白技术和牙本质小管封闭技术能有效地防治牙冠表面变色。
Clinicians have employed an assortment of bevel designs, chamfers, dentinal and enamel grooves, and choices of resin composite materials and techniques for the reattachment of tooth fragments.
临床医生对牙折裂修复技术进行了适当的分类，包括斜面设计、削尖式肩台、牙本质和釉质沟、复合树脂材料的选择以及牙碎片再附着过程的技术细节。
Clinicians have employed an assortment of bevel designs, chamfers, dentinal and enamel grooves, and choices of resin composite materials and techniques for the reattachment of tooth fragments.
临床医生对牙折裂修复技术进行了适当的分类，包括斜面设计、削尖式肩台、牙本质和釉质沟、复合树脂材料的选择以及牙碎片再附着过程的技术细节。
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