Oral cancer is one of the most common malignant tumor of the head and neck.Passive targeting is a targeted therapy for initial treatment of oral cancer,which is not always effective.In order to achieve better targeted therapy on oral cancer,researchers have turned to the study of active targeting with nano drug delivery system in recent years.With this treatment,nanoparticles are attached to the surface of the target molecules,and combine with specific expression or overexpression receptor on the surface of tumor cell to achieve target.This delivery system can transport anticancer drugs directed at the lesion site and achieve the purpose of reducing adverse drug reaction and increasing treatment efficacy.Targeted chemotherapy is increasing being used in the treatment of oral cancer.

With reference to the experience of School of Stomatology, Inner Mongolia Medical University, in participating in oral skill competitions, this article analyzes and summarizes the teaching issues reflected in skill competitions and refines the teaching strategies of consolidating theoretical foundation and cultivating clinical thinking as the basis, implementing the sterile concept and maintaining standard body position and posture as the key, and standardizing operating standards and strengthening hand skills as the important points. Participating in skill competitions can help to improve the emphasis on practical skill teaching of stomatology among students and establish innovative teaching models. Meanwhile, humanistic quality education is taken seriously to improve the comprehensive qualities of students through multiple channels.

BACKGROUND:The repair of maxillofacial bone tissue defects is a hot and difficult point in current research and the selection of seed cells is the key.Jaw bone marrow mesenchymal stem cells are adult mesenchymal stem cells that exist in the jaw bone.They have advantages in the application of maxillofacial tissue regeneration. OBJECTIVE:To summarize the biological characteristics,osteogenic differentiation advantages of jaw bone marrow mesenchymal stem cells,and the effects of drugs,in vivo environment,and microRNAs on the osteogenic differentiation of jaw bone marrow mesenchymal stem cells. METHODS:Computers were used to perform literature retrieval in PubMed and CNKI.Chinese and English search terms were"oral,bone tissue engineering,stem cells".405 articles were retrieved and downloaded.The articles were screened according to the inclusion and exclusion criteria and 70 articles were finally included for literature review. RESULTS AND CONCLUSION:Jaw bone marrow mesenchymal stem cells were excellent seed cells for oral bone tissue engineering,and had good proliferation and osteogenic differentiation potential.Drugs,in vivo environment and microRNAs could regulate the osteogenic differentiation of jaw bone marrow mesenchymal stem cells.However,the research on jaw bone marrow mesenchymal stem cells was still in the initial stage,so more research with strong demonstration is needed to confirm that jaw bone marrow mesenchymal stem cells have more advantages in the application of maxillofacial bone tissue regeneration.