Carbide Burs versus Diamonds

Carbide burs are made of tungsten carbide, a material that is 3 times stiffer than steel. Because of it is such a hard material it is able to maintain sharpness, making it an effective cutting tool. Much like diamond burs, carbide burs are available in a variance of shapes. The cuts made in the head of the bur make them effective cutting instruments as there is very little build up in debris.

Carbide burs cut and chip away the tooth structure rather than grinding as diamond burs do, this leaves a much smoother finish than diamond burs. Carbide burs are better handling for removing metal based restorations, they are also effective for trimming and finishing macro-filled and hybrid composites. Carbide burs are most commonly available as a friction grip shank but RA latch type shanks are also widely available.

Diamonds are most commonly used with high speed handpieces, meaning they are most commonly available as a friction grip shank. A diamond is the hardest material available and is used to grind away tooth tissue, usually enamel. The grinding motion of a diamond leaves a rough finish.

Diamonds have a short lifespan due to a pronounced decrease is cutting effectiveness. Diamonds often get clogged with debris, the grinding motion also quickly wears down the instrument. Diamonds come in an array of shapes and are available in a range of grits; from ultra fine to super coarse. When cutting away porcelain restorative material diamonds are very effective.