What is a diamond bur used for in dentistry?

For dentists,the dental handpiece is one of the most commonly used dental instruments in dentistry. The bur required for the dental handpiece drill is also a common consumable tool used by dentists in their daily work.

So what is a dental handpiece bur? What is it used for?

First of all, the bur is a very small diamond bur, this bur consists of a head and a handle, can be inserted into the high and low speed dental handpiece to use, to help dentists open cavities and repair teeth. With this explanation, are you able to understand the dental handpiece bur well?

Dental burs are divided into tungsten carbide burs and diamond burs. Among them, tungsten carbide burs are more commonly used in foreign countries, while in China, dentists use mainly diamond burs.

Tungsten carbide bur

What is a tungsten carbide bur?

Tungsten carbide burs are formed by vacuum high temperature sintering or high pressure shaping of tungsten carbide powder and cobalt powder welded to steel rods, which are machined and trimmed with a large diamond wheel. The smooth surface of the tooth thus prepared allows for more accurate impressions, resulting in more precise and marginally tighter all-ceramic restorations.

The tungsten carbide bur meets the requirements for minimally invasive preparation of teeth. The tungsten carbide bur has good leveling properties and is well suited for fine preparation of the dentition.

Advantages of tungsten carbide bur

• Long service life, the service life of a tungsten carbide bur is 4 times to 5 times that of a diamond turning bur.
• High hardness, cutting effectiveness, high efficiency; Tungsten carbide bur removal of a metal porcelain crown or metal porcelain teeth only need 1-2 minutes, while diamond bur takes half an hour or even an hour.
• Cutting the tooth, after preparing the cavity type, the surface of the tooth is smooth and free of scratches.
• Reduce the labor intensity of the dentist, saving the time of the dentist and the patient while improving the comfort of the patient.

Diamond bur

Diamond bur head bit has fine diamond particles attached to the periphery, which have been deburred, demagnetized, rounded, and purified to give excellent performance in sharpness and wear resistance.

Diamond has high hardness and excellent physicochemical properties. Diamond bur with certain sharp angle is made by adhering or plating diamond sand particles according to certain direction and spacing with the center axis of stainless steel bur as the center of the circle, which has certain ability of cutting hard tissue.

According to the different density of surface sand plating, can be divided into two layers of sand plating bur, three layers of sand plating bur, full sand bur, etc., thickness from a few microns to tens of microns range. Increased thickness of plating can extend the bur life, improve the cutting rate, more environmentally friendly, more clean.

But diamond bur in the use of the process, diamond sand will gradually fall off, usually in the diamond sand off half of the time, the life of this bur will come to an end.

What to pay attention to dental burs?

Because dental bur is operated in the patient’s mouth, it is often in contact with saliva, blood and mucous membrane tissue, so the choice of disinfectant is more strict. We should choose disinfectants with good sterilization effect, less irritation and less corrosiveness to metal. 20mg/L glutaraldehyde and other chemical disinfectants are used clinically for disinfection of dental bur.