What are the cutting instrument in dentistry?
The hand cutting instruments include the chisel, excavator, elevator, gingival margin trimmer, hand piece, hoe, hatchet, scalar, and Wilson. Chisel – used to break down the enamel margin of the tooth preparation, to form sharp lines and point angles, and to place retention grooves.
What are the rotary cutting instruments?
The main types of rotary dental instruments are: 1) Burs – used in a high speed or low speed handpiece for cutting; usually made of tungsten carbide or diamond. There are three parts to a bur: Head – the working/cutting part; comes in many shapes and sizes.
What type of instrument is a burnisher?
A burnisher is a dental instrument commonly used to ensure that amalgam restorations are smooth and free of irregularities. The working end of a burnisher is smooth and rounded.
What are non cutting instruments?
Non cutting instruments. These instruments are used to cut hard or soft tissue of the mouth. Hand cutting instruments are composed of three parts: handle, shank and blade (Fig 1). For non cutting instrument; the part corresponding to the blade is termed the nib or working end.
What is a cutting instrument?
Cutting instruments include scissors, surgical blades, knives and scalpels. Grasping or holding instruments include hemostatic forceps and tissue forceps.
Which instrument removes decay manually?
Tooth Preparation Instruments
| Instrument | Use |
|---|---|
| Excavator | Removes soft dentin, debris, and decay from the tooth; a versatile instrument |
| Hatchet | Smooths the walls and floors of the tooth preparation |
| Hoe | Smooths the walls and floors of the tooth preparation |
What are the parts of a bur?
The dental bur [4,8,9] has three parts: the head, the neck, and the shank. The head contains the blades, which produce cutting action by rotary motion. The blades are positioned at various degree angles in order to change the property of the bur.
What are inverted cone burs used for?
Inverted cone burs are used primarily for producing undercuts at the junction of the pulpal floor and lateral walls in occlusal (Class I), cervical (Class V) cavities, and in the occlusal locks of the Class II cavities. Inverted cone burs are, also, useful for flattening pulpal and gingival walls.
What is a discoid Cleoid used for?
Description. This instrument is made of high grade stainless steel and is used to carve amalgam or wax following natural anatomical form. It is an essential carving instrument to develop grooves and triangular ridges.
What are dental burnishers?
Burnishers are dental hand instruments, normally used at the end of dental restoration procedures or operations. They are used for polishing and contouring amalgam fillings and to polish composite fillings.
What is dental hatchet?
[hach´et] a bibeveled or single beveled cutting dental instrument having its cutting edge in line with the axis of its blade; used for breaking down tooth structures undermined by caries, for smoothing cavity walls, and for sharpening line and point angles.
What is amalgam carrier?
Amalgam carriers are instruments used to fill dental cavities with amalgam. These act like syringes, carrying in their tubular tip the amalgam that is inserted and pressed in the dental cavity by pressing on a lever, which activates the piston inside the tube or the back end of the amalgam carrier.