Explanation of several terms in oral biology

The explanation of the scientific terms of dental equipment is as follows:

Line - Langer drew the first human ** fissure line diagram, and pointed out that the direction of the ** fissure line is consistent with the direction of the arrangement of collagen fibers and elastic fibers in the dermis, so this line is called Langer line.

2.Masseteric space is located between the masseter muscle and the lateral ulnar bone wall of the mandibular ramus, with the anterior boundary being the anterior edge of the masseter muscle, the posterior boundary being the posterior edge of the mandibular ramus, the inferior edge of the superior flat zygomatic arch, and the inferior bounding of the masseter muscle attachment in the mandibular ramus.

ridge - transverse crest: the slender enamel bulge that connects the two triangular ridges of the octisal surface opposite the cusp of the commistance, and is an important anatomical landmark of the commistic surface of the first premolar of the lower mandible.

4.Occult occlusion - refers to a kind of occlusal relationship when the cusps of the upper and lower jaw teeth are staggered to achieve the widest and closest contact.

5.Mask dentin - the first layer of primary dentin formed close to the enamel and cementum, the matrix collagen fibers are mainly Korff fibers secreted from incompletely differentiated odontoblasts, and the collagen fibers are arranged parallel to the tubule. In the crown is called the dentin.

6 Reparative Dentin——Restorative dentin is when the tooth surface is exposed or damaged by the cytoprocess of deep odontin cells due to wear, acid etching, caries or dental surgery, etc., some odontoblasts degenerate, and the undifferentiated mesenchymal cells deep in the pulp move there to replace the degenerated cells. The dentin formed from these newly differentiated immature odontoblasts is called restorative dentin.

This is a defensive response that occurs at the site of the injury to protect the pulp from damage. Restorative dentin tubules are small in number, curved in the direction of travel, and irregular in shape. When restorative dentin forms at a faster rate, some cells are embedded in the dentin matrix, similar to bone tissue and called osteodentin.

7.Junctional epithelium is the part of the gingival epithelium attached to the tooth surface, which wraps around the neck of the tooth in a neckline shape, extends about 2mm from the bottom of the gingival sulcus to the root, and gradually thins towards the apical square, and is a scaly epithelium without keratinization and no epithelial nail process.

8.Dyskeratosis – also known as miskeratosis – is an abnormal keratinization of the epithelium in which an individual or group of cells appears in the spinous or basal layer of the epithelium. There are two types of dyskeratosis:

1) Benign staggering is more common in highly proliferative epithelial nail processes; (2) Malignant malatocytosis is obvious, which is more common in carcinoma in situ and squamous cell carcinoma.

Line observation line - wire, refers to the dividing line drawn according to the common alignment tract, which is used to distinguish the undercut and non-inverted areas of hard and soft tissues.

Pellicle – Acquired membrane (salivary film): A biofilm formed by the selective adsorption of salivary proteins to the tooth surface. Its thickness is 30 to 60 m, and bacteria begin to attach to it a few minutes to a few hours after the formation of the acquired film.

The explanation of the term stomatology aesthetics is: oral medicine aesthetics is an independent discipline formed by the intersection of stomatology and aesthetics, and is an important part of medical aesthetics. Aesthetics of stomatology focuses on the study and elucidation of beauty, aesthetics and their regularity in the field of stomatology, and provides guidelines and technical methods for aesthetic implementation in stomatology.

Oral aesthetics is the first core general education course offered by the School of Stomatology in the whole school, which cultivates students' aesthetic quality and improves students' aesthetic realm through a series of lectures.

The course focuses on the cultivation of temperament and quality, strengthens the integration of humanistic quality and scientific quality, and teaches a concept and way of thinking, with the purpose of laying a foundation for students to continue to learn and consciously use aesthetic principles to guide clinical practice, and to provide basic knowledge and information for further research on aesthetic and aesthetic issues in stomatology, and to cultivate deep aesthetic cultivation.

Application of medical aesthetics in stomatology

1. Medical aesthetics can improve the appearance of teeth. Modern people are becoming more and more skillful and pay more attention to appearance, and teeth are an important part of people's appearance. Quite a few people feel low self-esteem because of dental problems, which affects their social and professional careers.

Medical aesthetics can improve the appearance of teeth through cosmetic dental techniques, such as orthodontics, teeth whitening, dental veneers, etc., so that patients can have a more beautiful smile and a more confident mindset.

2. Medical aesthetics can improve the oral health of patients. Oral health is an important part of human health, and oral diseases not only affect oral health, but also have an impact on the health of the whole body. The application of medical aesthetics in stomatology can improve the alignment and occlusion of teeth, reduce the occurrence of oral diseases, and improve oral health through cosmetic dental techniques, such as orthodontics, dental veneers, etc.

3. Medical aesthetics can improve the quality of life of patients. Oral health and aesthetics have an important impact on people's quality of life. The application of medical aesthetics in stomatology can improve the appearance and oral health of teeth through filial piety, improve patients' self-confidence and social skills, and make them live more happily.