Oral science knowledge is abstract and complex, and the direct observation is difficult. In order to solve the problems in the teaching process of Stomatology, for example, the vision of oral cavity is narrow, it is difficult for students to see the specific structure of the oral cavity. In this case, we introduce the oral endoscope into the teaching of oral science theory and experiment, and combine it with multimedia teaching closely, which greatly improve the students' interest in learning and and the teaching quality, what's more, it is conducive to the development and training exchange of Oral Science and medical work in basic medical staffs.

The advantages of the application of oral cavity endoscope in teaching oral science:

Oral science is a clinical subject with strong practicality and technology in medicine. At present, the teaching of stomatology in China is mainly based on large class (lecture), supplemented by clinical internship. The previous teaching reform only increased the clinical probation time, in order to let the students participate in practice and master the knowledge essentials better. However, in the teaching of clinical operation skills, we still can't receive the ideal effect that the students' learning enthusiasm is not high. What’s more, in the probation teaching, students can’t be guaranteed to see the common diseases every time. In this case, it is difficult to achieve good teaching effect.

With the continuous update of medical equipment, the application of oral cavity endoscope is more and more widely used in major hospitals. Oral cavity endoscope is a special camera system, which can be put into the oral cavity to display and enlarge the image clearly on the computer or TV. With the help of oral cavity endoscope system, the stomatologists can better find out the soft and hard tissue lesions, and patients can intuitively and comprehensively understand the stains, plaque, calculus and gingivitis on the surface of their teeth, which are usually invisible dental defects. In addition, these images can also be stored in the patient's database, which will form a new generation of electronic medical records with text, graphics, X-ray images and other information, in this case, it can be easily accessed and used in consultation, academic reports and other occasions.

When oral cavity endoscope is used in theory teaching, teachers usually use pictures and teaching videos to give students an intuitive impression. Although the teaching effect is better than the traditional mode, the use of picture format and color effect and other reasons can't achieve the effect of immersing students. Therefore, there is still no clear concept and intuitive impression in the internship or experimental class. For example, when learning oral anatomy and talking about the retromolar tissue, no matter the pictures or related videos can't accurately describe the specific area, it is difficult to understand the explanation. In this case, teachers often spend many times to teach it, however, students still have no clear concept of anatomy. Through the application of oral cavity endoscope, many anatomical marks are presented to students along with the interface of live video by using oral cavity endoscope. At this time, as long as the teacher timely and simple explanation, all problems will be easily solved. After that, students are deeply impressed by the visual stimulation in the class, while the image is closer to the real oral situation, so that there will not be too many strange scenes in the process of practice or internship in the future, in this way, it is easier to understand.

In the past, when the oral cavity endoscope was used in the experimental teaching, the teacher usually taught with the model, and the students watched on the side, and then the students have a practice independently in groups. Because of the narrow field of vision in oral operation, each student has a completely different perspective, so that the degree of observation is also different. For example, students can only see the teacher's hand moving in the patient's mouth and constantly talking about things. In fact, students have no concept of the specific position and direction, especially when the number of students is large, the teaching effect is more difficult to guarantee. However, each step of the operation process can be seen clearly on the Internet. With the teacher's explanation, they can understand the operation points intuitively. When students practice, they will have a target, rather than operate blindly. Oral cavity endoscope system is especially suitable for experimental teaching when the number of students is large. Teachers often have only once detailed endoscopic teaching, and students can understand and grasp the key points. At the same time, it also saves a lot of time.

Experience and discussion about the typical characteristics of oral cavity endoscope：Intuitive. For example, about some key and difficult contents (especially special anatomical marks and so on), the tissue structure and pathological changes can be shown accurately and intuitively by using oral cavity endoscope system, which will be very clear and accurate. In addition, its has strong operation ability, the best angle of view image can be saved by the screenshot function for students to review and practice in the future. Only install the driver software on the computer of multimedia classroom, and connect the endoscope probe with the host through USB interface, when using, the hand-piece probe is put into the corresponding position of the "model" mouth to present the image. The oral cavity endoscope system can be distributed to grass-roots units. After returning to the team, students can also report difficult cases to the superior hospital through the screenshot and video interception function in the software and the superior hospital can give a clear diagnosis and treatment plan at the first time, so as to avoid repeated consultation.