How are dental burs classified?

Classification of Dental Bur According to Grit Size

The grit can be tungsten, steel, or diamond particles. Coarse grit will be the most popular for tooth reduction—fine and extra-fine grit burs used for polishing and finishing. An ISO standardized color-coded band on each bur represents the grit size.

How many types of Bur are there?

Four types of virtual burs of different sizes: spherical bur (a), cylindrical bur (b), conical bur (c), and cylinder- conical bur (d)

How are burs identified?

They can be distinguished, in addition to the ISO numbering, by the specific colouring found on the coloured ring on the neck of the bur.

What are the 3 types of Bur shanks?

All burs have a shank and a head. There are three main types of shank – Long Straight Shank (HP), Latch-type Shank (RA) and Friction Grip Shank (FG).

What are the three main types of abrasive burs?

Some of the most common shapes are round, pear and cross-cut tapered. Pear burs are best suited for creating access points, preparing cavities and evening splitting roots of smaller teeth.

What is the size of Bur?

Contra-angle dental burs: Their diameter is 2.35 mm and commonly you’ll see a notch at the non-active end. They are also known as RA burs (Right Angle), CA burs or simply low-speed burs. Hand piece burs. Like the contra-angle burs, the shank diameter is also 2.35 mm, but it is a considerably longer bur.

What type of bur is used to remove decay?

round tungsten carbide bur
Dental caries are removed using a round tungsten carbide bur at a slow speed. Good sizes to select are sizes two, four, six, or eight. Using a round tungsten carbide bur at a slower speed removes only a minimal amount of dental hard tissue while more effectively removing the softer areas of decay.

What are the types of carbide burs?

Types of Carbide Bur Shanks
  • FRICTION GRIP (STANDARD LENGTH) (FG)
  • FRICTION GRIP (SHORT SHANK) (FG SS)
  • FRICTION GRIP (LONG) (FG LONG)
  • FRICTION GRIP (SURGICAL) (FG SURGICAL)
  • RIGHT ANGLE/LATCH-TYPE (RA)
  • RIGHT ANGLE/LATCH-TYPE (SURGICAL) (RA SURGICAL)
  • STRAIGHT HANDPIECE (HP)

What are diamond burs used for?

Dental diamond burs are often used to cut through Zirconia or grind porcelain when shaping and placing crowns or veneers. They may also be used to grind down tooth structures in order to get proper fits for crowns or veneers.

What are burrs called?

They tend to pop up in pastures or along roadsides, but they can sometimes show up in lawns thanks to how well they have learned to spread. We’ve not only heard them called grass stickers but also “prickly thorns,” “sticker burrs,” or “sandbur.” The latter is the name of the full weed (not just the single “sticker”).

What is a 330 dental bur used for?

The pear shaped bur is used to create an undercut for retention of filling materials. Pear shaped burs have a rounded edge unlike inverted cones. These burs are intended to be single use and the cost factored in to each procedure.

What do you mean by bur?

bur in American English

(bɜːr) (verb burred, burring) noun. 1. a rough, prickly case around the seeds of certain plants, as the chestnut or burdock.

What is the length of 245 bur?

2.9 mm Length
Patterson® Carbide Burs, FG Standard – Amalgam Prep, # 245, 0.9 mm Diameter, 2.9 mm Length, 10/Pkg.

Which bur is used to remove decay?

round tungsten carbide bur
Removing Dental Caries

Dental caries are removed using a round tungsten carbide bur at a slow speed.

What does RA mean in burs?

round right angle
Plain round right angle (RA) burs have a 22mm long shank and a small notch at the end for locking the bur in place. These burs are commonly used for removing bone in low speed handpieces.

What type of Bur is 245?

dental carbide burs
245 burs are dental carbide burs made especially for class 2 Amalgam preparation and for smoothing occlusal walls. The dental amalgam is a metallic restorative material made of a combination of silver, tin, copper and mercury. To remove Amalgam effectively, you need high-quality carbide burs.

What is the dimension of 330 bur?

Midwest® Operative Carbide Burs, FG – Pear, # 330, 0.8 mm Diameter, 1.6 mm Length, 100/Bag.

What shape is a 245 bur?

Pear shaped
Carbide Bur, Pear shaped Amalgam Prep – FG 245 S.S. White – 10 pack.