Carbon nantubes composites draws more and more attention these days. Its application provides new potential for the reinforcement and toughness of dental ceramic. In this paper, the properties of carbon nanotube, carbon nanotube based ceramic composites and its mechanics of toughness, and the future trend of carbon nanotube in dental ceramic material, have been reviewed.

Objective To find the best time to remeasure temperature after cooling with evidence-based practice. Methods Used Johns Hopkins′ Evidence Based Practice Tool to find the best time to remeasure temperature after cooling. That tool included three steps which were establish problem, evidence synthesis and transfer evaluation. Results The best time to remeasure temperature after physical cooling was 30 minutes. The best time to remeasure temperature after drug cooling was 60 minutes. The best time to remeasure temperature after physical and drug combination cooling was 30 minutes after physical cooling and 60 minutes after using drug. Conclusion The best time to remeasure temperature after cooling was different because of the different cooling methods.

In order to improve its dispersion condition in dental composite resin and enhance its interaction with the matrix, single-walled carbon nanotubes(SWNTs) were refluxed and oxidized, then treated by APTE. Their outer surface were coated by nano-SiO2 particles using sol-gel process, then further treated by organosilanes ATES. IR and TEM were used to analyze modification results. TEM pictures showed nano-particles were on the surface of SWNTs; IR showed characteristic adsorbing bands of SiO2. Composite resin specimen with modified SWNTs was prepared and examined by TEM. SWNTs were detected in composite resin matrix among other inorganic fillers.
Composite Resins ; chemistry ; Dental Materials ; chemistry ; Humans ; Nanotubes, Carbon ; chemistry ; Resin Cements ; chemistry ; Silicon Dioxide ; chemistry ; Surface Properties ; Tensile Strength