Distinguish dental instruments by purpose 1. Mouth mirror---The dentist can be used to see the places where the line of sight is out of reach. It is used for oral inspection to observe the condition of the tooth surface and the structure of the mouth. It is a sight extension tool for doctors. 2. Dental Probe----as the name suggests, use a needle-like iron rod to test the depth of the cavity and the cavity in the allergic area. Look at the state of the root canal and gums. There are many types of shapes. 3. Tweezers----clamp dressing devices and drugs to check for loose teeth 4. Dental handpieces----divided into high-speed handpieces and low-speed handpieces, telling the rotation to divide the teeth into several pieces, replacing the role of the dental chisel and osteotome, and used for dental treatment-level restoration 5. Dental elevator-----composed of the blade, handle and rod, loosen the teeth before extraction to facilitate tooth extraction 6. Dental mallet---bone removal and crown splitting to increase the gap 7. Light curing----help the composite resin and adhesive to solidify in a short time when filling teeth 8. Pneumatic dental elevator---advanced version of the tooth elevator, easier to enter between the teeth and bones, reducing bone damage