Dental handpieces are essential equipment for the treatment of oral diseases. It is divided into low speed dental handpiece and high speed dental handpiece. Low speed dental handpiece is mainly used to polish dentures. High speed dental handpiece is used clinically to grind teeth.
The low speed dental handpiece is divided into two parts, one is the motor and the other is the handpiece body. When using it, you need to install the motor on the dental chair first, and then install the low speed handpiece on the motor, and finally install the dental bur and use the pedal to control rotate and stop to operate.
Low speed dental handpiece is divided into straight dental handpiece and dental contra angle. The straight handpiece is used for extraoral polishing. We use it to polish dentures or temporary crowns when there is no special polishing machine at hand. The bur used in it is generally called a grinding head, which is generally common to the grinding head of a dental micro motor.
Dental contra angle is commonly used when we perform intra-oral operations. Before use, we need to install the dental bur, pull the paddle on the back, insert the bur, and then buckle the paddle back. When using, check whether the paddles are tightly installed, and the same operation is performed when removing them.
The dental contra angle can be used to remove rot when filling the teeth; or it can be used to lift the top of the pulp chamber with a small ball drill after the pulp is opened. G drills, P drills, and polishing cups are also installed on low-speed dental handpiece. They are used for polishing after teeth cleaning, removing the gutta-percha tip, preparing fiber posts and so on. Usually it does not need to spray water, so low-speed dental handpiece generally has no waterway or use an external waterway design.
The dental handpiece is the most commonly used equipment for clinical treatment in dentistry. Because it is in close contact with the patient's saliva, blood, gingival crevicular fluid and dental plaque during the treatment process, its surface and the internal turbine components and pipes of the handpiece may be affected differently after use. Because it is contaminated by pathogenic microorganisms to a certain degree, it is one of the most dangerous instruments that cause cross-infection in clinical practice. It must be strictly disinfected and sterilized after use.