A high-speed dental handpiece (4-hole, push-button type) is a precision-driven instrument used in dentistry for cutting, grinding, and polishing tooth structures and restorative materials during various dental procedures. It operates using compressed air, providing high rotational speed and torque for efficient cutting with minimal vibration.

A Handpiece Converter, also known as a Handpiece Adapter, is a dental connector device used to convert the connection type between different dental handpieces (high-speed or low-speed) and tubing systems. It allows compatibility between 2-hole, 4-hole, and 6-pin handpieces and their corresponding dental unit connectors.

This small but essential accessory helps clinicians use various handpieces interchangeably without needing to change the entire unit or tubing system.

A Lubricant (550 ml) in dentistry refers to a pressurized spray or liquid lubricant specifically designed for cleaning and maintaining dental handpieces — both high-speed (air turbine) and low-speed (contra-angle and straight) handpieces.

It helps ensure smooth operation, reduces friction, and extends the lifespan of the handpiece by keeping the internal bearings and moving parts properly lubricated.

A Matrix Band Holder, also known as a Tofflemire Retainer, is a dental instrument used to secure a matrix band around a tooth during the placement of restorative materials such as amalgam or composite. It helps recreate the natural contour and contact of the tooth while preventing overhangs and ensuring proper adaptation of the filling.

Components:

1. Head: Holds the matrix band securely; may be straight or contra-angled.

2. Locking Vise: Tightens and locks the matrix band in place.

3. Long Knob (Adjusting Screw): Expands or contracts the loop size of the band to fit around the tooth.

4. Short Knob (Locking Nut): Locks the band firmly to prevent slipping during restoration.