Dental zirconia block grinding technology and skills

Dental zirconia blocks are widely used in the field of dental restoration because of their excellent mechanical properties, aesthetic effects and biocompatibility. The grinding process and skill are essential to ensure the quality of the prosthesis and patient satisfaction. The following is a detailed summary of the dental zirconia block grinding process and skills:

First, the preparation before polishing

Equipment inspection:

Ensure that the grinding equipment used (such as dental high-speed phone, car needle, etc.) is in good condition, and the car needle is sharp and free of wear.

Check that the cooling system of the equipment is working properly to avoid overheating during sanding.

Personal Protection:

Wear appropriate personal protective equipment, such as goggles, masks and gloves, to prevent dust and debris from damaging the eyes, respiratory tract and skin.

Second, grinding process

Rough Grinding:

Use coarse grit emery needle for preliminary grinding to remove burrs and uneven parts on the surface of zirconia block.

Maintain appropriate pressure during sanding to avoid excessive pressure resulting in fracture of the restoration or excessive wear of the needle.

After rough grinding, use water or air to cool the restoration to prevent overheating.

Fine Grind:

It was replaced with fine-grained emery needle and finely polished to make the surface of the prosthetics smoother.

Pay attention to the Angle and force of the sanding to ensure that the edges and surfaces of the restoration are flat and consistent.

During the fine grinding process, it is also necessary to keep it cool to prevent the repair from overheating.

Polish:

Polishing is the final step in the polishing process and aims to improve the surface gloss and smoothness of the restoration.

Use a special polishing tool, such as a rubber wheel, a white rubber wheel, or a polishing wheel containing emery particles.

When polishing, first use a thicker polishing tool to remove the rough scratches on the surface, and then use a thinner polishing tool to achieve a mirror effect.

Water cooling is not required during the polishing process, but ensure that the polishing tool is in full contact with the surface of the restoration to obtain an even gloss.

Third, polish skills

Control grinding speed:

Too fast a grinding speed can lead to overheat, rough surfaces, or rapid needle wear.

It is recommended to use the way of slow grinding repeatedly to ensure the grinding effect and the quality of the restoration.

Pay attention to the grinding Angle and strength:

Maintain proper Angle and force during grinding to avoid unnecessary damage to the prosthesis.

For edges and details, use a small needle or polishing tool for fine treatment.

Check and change the needle regularly:

The needle will gradually wear out in the grinding process, which will affect the grinding effect.

Check the status of the needle regularly, and replace the needle with serious wear in time.

Keep cool:

The heat generated during the sanding process can cause the restoration to overheat, crack, or discolor.

A water or air cooling system is used to ensure that the restoration remains at the proper temperature during the sanding process.

Pay attention to personal hygiene and environmental protection:

The dust and debris generated during the grinding process may cause harm to the human body and the environment.

Wear appropriate personal protective equipment, clean the work area regularly, and maintain environmental hygiene.

Fourth, precautions

Avoid over-polishing:

Excessive grinding may result in thinning of the prosthesis, reduced strength, or increased surface roughness.

During the grinding process, the state of the restoration should be closely observed to avoid excessive grinding.

Choose the right grinding tools and materials:

Choose the right grinding tools and materials according to the material and shape of the restoration.

Ensure that sanding tools and materials used comply with relevant standards and requirements.

Pay attention to the grinding sequence:

Grinding is carried out in the order of rough grinding, fine grinding and polishing to ensure the surface quality and gloss of the restoration.

Following doctor's orders and patient's needs:

In the process of polishing, it is necessary to follow the doctor's advice and the patient's needs to ensure the function and beauty of the prosthesis.

In summary, the grinding process and skills of dental zirconia block need to consider many aspects such as equipment, materials, personal protection and grinding sequence. By mastering the correct grinding process and techniques, the quality of the prosthesis and patient satisfaction can be ensured.