How to repair the dental handpiece?

How to repair the dental handpiece?

Repairing dental handpieces is a highly specialized task requiring specific tools and techniques. Improper handling can easily cause further damage. Therefore, it is recommended that non-professionals take faulty handpieces to a professional repair shop.

However, understanding routine maintenance and common troubleshooting techniques can help extend the life of your handpiece. Here are the key points:

Routine Maintenance (Most Critical)

Proper routine maintenance can resolve most potential problems and is the foundation of repair:

• Core Lubrication: After each cleaning and disinfection, a special liquid must be injected into the inside of the phone (the bracket mechanism needs daily lubrication) until clean oil is discharged from the head. Industrial oil or edible oil is strictly prohibited.

• Cleaning Method: Using organic cleaners or specialized equipment to clean the cavities can effectively reduce the failure rate of bearings and clamps.

Common Faults and Repair Directions

According to the repair bulletin from the Western Theater Command General Hospital, you can make a preliminary judgment based on the following phenomena:

• Power problems: No rotation, abnormal noise, insufficient power → Usually due to bearing damage.

• Water system problems: No water output, water spraying from the back cover → Check the pipes, connectors, or internal seals.

• Clamping problems: The needle is not firmly clamped, cannot be removed → Generally due to wear of the clamping shaft (three-leaf spring).

• Others: Loose sewing head, wobbling needle → May be due to bearing wear or aging of the sewing head components.