ABSTRACT
The teaching content of biomaterials science is of boundness and vapidity, in additional, there is alack of interaction between teachers and students. The teaching efficiency of the biomaterials science is greatly reduced. In this paper, combining with the current research hotspots in biomaterials science, we put forward the reform of the teaching knowledge, teaching methods and teaching evaluation. By introducing the scientific research achievements and academic innovations of teachers, integrating Seminar teaching with flipped mode, combining with the characteristics of colleges and universities, from in-class to out-of-class, setting up the course for different specialties, establishing teaching evaluation with new network information, this paper discusses the teaching reform of biomaterials course, and puts forward new requirements and challenges.
ABSTRACT
OBJECTIVE: To examine the prophylactic potential of 3 orthodontic bonding adhesives: Fuji Ortho SC, Illuminate, and Resilience. METHODS: Thirty-six Wistar Wag rats were randomly divided into 4 groups consisting of 9 rats each. One of the groups received no treatment and was used as a control. In the other groups, individual bands coated with one of the 3 adhesives were cemented to the lower incisors. Enamel samples were obtained after 6 and 12 weeks and analyzed using scanning electron microscopy in combination with energy dispersive spectrometry. RESULTS: Six weeks after band cementation, no fluoride was found in the enamel of the lower incisors. After 12 weeks, there was no fluoride in the enamel of teeth coated with the Resilience composite. However, in the case of the Illuminate composite and the resin-modified glass ionomer Fuji Ortho SC cement, the depth of fluoride penetration reached 2 microm and 4.8 - 5.7 microm, respectively. CONCLUSIONS: Fluoride ions from orthodontic adhesives can be incorporated into the surface layer of the enamel. Orthodontists may apply orthodontic adhesives, such as the Fuji Ortho SC, to reduce the occurrence of caries during orthodontic treatment with fixed appliances.