Mathew Mebin George, Soni Ashu Jagdish, Khan Md Muzammil, Kauser Afreen, Charan Vunnam Sri Sai, Akula Sunil Kumar
Department of Pedodontics and Preventive Dentistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India.
Consultant Pediatric Dentist, Dr. Ashu's Dental Clinic, Vadodara, Gujarat, India.
J Family Med Prim Care. 2020 Jan 28;9(1):354-358. doi: 10.4103/jfmpc.jfmpc_853_19. eCollection 2020 Jan.
Comparison of casein phosphopeptides (CPPs) and amorphous calcium phosphate (ACP), tricalcium phosphate, and hydroxyapatite on assessment of dentine tubule occlusion on primary enamel using scanning electron microscope (SEM).
A total of 20 freshly extracted noncarious primary molars were randomly divided into four groups (A to D) with five sections in each group; group A: negative control, group B: CPP-ACP, group C: tricalcium phosphate, and group D: Hydroxyapatite (HA). To assess tubule occlusion, 20 dentin sections of 2 mm thickness were obtained from cervical third of sound primary molars. Each section were processed to simulate the hypersensitive dentin and the test agents were brushed over the sections with an electric toothbrush and observed under SEM for calculation of the percentage of occluded tubules.
Group B and D showed greater percentage of tubule occlusion than group C. Intergroup comparison of tubule occlusion potential of Group B and D was not significant.
HA showed significantly higher dentinal tubule occlusion when compared to CPP-ACP and tricalcium phosphate.
使用扫描电子显微镜（SEM）比较酪蛋白磷酸肽（CPPs）、无定形磷酸钙（ACP）、磷酸三钙和羟基磷灰石对乳牙釉质牙本质小管封闭情况的评估。
总共20颗新鲜拔除的无龋乳牙随机分为四组（A至D），每组五颗；A组：阴性对照组，B组：CPP - ACP组，C组：磷酸三钙组，D组：羟基磷灰石（HA）组。为评估小管封闭情况，从健康乳牙牙颈部三分之一处获取20个厚度为2毫米的牙本质切片。对每个切片进行处理以模拟敏感牙本质，用电动牙刷将测试剂刷在切片上，然后在SEM下观察以计算封闭小管的百分比。
B组和D组显示出比C组更高的小管封闭百分比。B组和D组小管封闭潜力的组间比较无显著差异。
与CPP - ACP和磷酸三钙相比，HA显示出显著更高的牙本质小管封闭率。
