Treatment of dentin hypersensitivity by calcium phosphate precipitation method.

我们有建议的钙磷酸盐预cipitation（CPP）方法，其中包括apatitic mineral for the treatment of dentin hypersensitivity。在这项研究中，我们瞄准了评估CPP方法在体内使用重要的Beagle狗牙齿的可捕获性。第五类洞穴是在啤酒犬中准备的聚酯和独木舟。第五类洞穴是在啤酒犬中准备的聚酯和独木舟中，然后牙齿被蚀刻成50%的柑橘酸，可在2分钟内打开牙科导管。CPP solution （1 M CaHPOイルD24イルD2·2 HイルD22イルD2O，2 M HイルD23イルD24イルD2） and post-treatment solution （1 M NaHCOイルD23イルD2，0. 3 M NaF） were applied to the teeth with cotton swab。牙齿分成两组， （1）由刷子制成的塑料控制，（2）非塑料控制组。丹丁生物学被证明是在治疗后使用神经质钻石点直接表现出丹丁生物学，在治疗后7天后使用CPP方法。该物种的表面和破碎表面是由扫描电子显微镜观察的。当CPP治疗被制成时，我们发现牙科导管是均匀的，完全封闭的，从牙科表面上精确度高达5微米。在非塑料控制组中，牙科导管在CPP治疗后打开七天。在相反的情况下，大多数牙科管子仍然被塑料控制组的精密管堵塞。我们将CPP方法结合在一起，因为当正确的塑料控制被制成时，对丹丁高敏感性的治疗是有用的。在另一个词中，斑块控制发挥了使用CPP方法进行丹丁高敏感性治疗的关键作用。

We have proposed calcium phosphate precipitation (CPP) method which occluded dentinal tubules with apatitic mineral for the treatment of dentin hypersensitivity. In this study, we aimed to evaluate occluding ability of CPP method in vivo using vital teeth of beagle dogs. Class V cavities were prepared in cervical of molars and canines in beagle dogs. Class V cavities were prepared in cervical of molars and canines in beagle dogs, then the teeth were etched with 50% citric acid for 2 min to open dentinal tubules. CPP solution (1M CaHPOィイD24ィエD2・2HィイD22ィエD2O, 2M HィイD23ィエD2POィイD24ィエD2) and post-treatment solution (1M NaHCOィイD23ィエD2, 0.3M NaF) were applied to the teeth with cotton swab. The teeth were divided into two groups, (1) plaque control made by brushing, and (2) nonplaque control group. Dentin biopsy was performed to obtain dentin specimens using cylindrical diamond point immediately after treatment and seven days after treatment with CPP method. The surface and fractured surface of the specimens were observed by scanning electron microscopy. We found that dentinal tubules were occluded homogeneously and completely with apatitic precipitate up to 5 μm from the dentin surface when CPP treatment was made. In non-plaque control group, the dentinal tubules became open seven days after CPP treatment. In contrast, most of the dentinal tubules were still occluded with the precipitate in plaque control group. We concluded that CPP method is useful for the treatment of dentin hypersensitivity when proper plaque control was made. In the other words, plaque control plays a key role for the duration of the dentin hypersensitivity treatment with CPP method.