class IV composite resin restoration should be finished with a:
- a- No. 330 Tungsten carbide bur.
- b- Mounted stone.
- c- 12- fluted carbide bur.***
- d- Coarse diamond point (stone).
There are so many delicacies from around the world that you cannot taste them without healthy teeth. In the dental restoration process, resin is an often used material.
The basic content of dentistry is: on the basis of removing severely damaged or weakened tooth tissue, prepare the tooth according to the principles of retention, resistance and protection of the deciduous organ; Finally, pass a specific procedure using a specific material to restore its inherent form and function. In the process of dental restoration, from design to preparation, every step and process must take into account the preservation of tooth tissue. The main cause of dental defects is caries, followed by trauma, wear and acid erosion.
Resin repair refers to dental tissue defects caused by caries, wedge defects, trauma, etc., and composite resin materials are used to repair them to restore their appearance and function. Filled teeth are realistic, and it is almost invisible that they have been repaired. Resin filling materials can be used for the front and back teeth, called dental colored materials, and resin restorations are based on good bonding restoration techniques.
Adhesive restoration in dentistry refers to the technique of fixing resin fillings on the tooth surface structure or other restoration materials through adhesives to achieve the effect of repair or treatment when the tooth is defective. The adhesive strength effort mainly depends on the polymeric organic adhesives (resin adhesives) and various adhesive technologies.
Composite resin filling materials have been used to restore teeth. This technology has been used for more than half a century. With the rapid development of materials science and technology, the bonding system and composite resin materials have been able to meet the strong and beautiful requirements of clinical use. The preferred method for direct body repair.
The direct bonding repair technique involves repairing defects in the front teeth caused by various causes and abnormal color and shape. The ultimate goal of repair is to restore the shape and beauty of the diseased tooth.
For bonding of tooth enamel, a phosphoric acid etching bonding system is used, for bonding dentin, a full acid etching system or self-etching for dentin is used, and the restoration material must be a composite resin. In the restoration, single-color, double-color and multi-color resin restoration techniques can be selected according to the patient's requirements and tooth condition to meet different aesthetic restoration goals. For tooth tissue defects that penetrate the lips and tongue, the tongue should be filled with a resin with a color-protecting effect to reduce the influence of the dark background of the oral cavity on the color of the restoration.