High-Speed Connections

Posted on: November 4, 2019

High-Speed Connections


What Are the Different Types of High-Speed Handpiece Connections?

  • Handpieces can come with either a fixed back end or a quick disconnect swivel style.
  • Both types of back ends can come with 5 different tubing connection configurations (i.e. 2 holes, 4 holes).


Fixed Back

  • Does not have a swivel coupler; must be screwed on/off tubing for cleaning and does not swivel.
  • Connections are internationally standardized and universal (ISO) so that any brand of handpiece will fit the same tubing connection configuration.

Quick Disconnect

  • The handpiece has a hollow back end that can be snapped onto a coupler.
  • The coupler is screwed onto the tubing, allowing the handpiece to be quickly attached and removed for cleaning.



What are the Benefits of Quick Disconnect Couplers?

  • Easy and fast removal of the handpiece from the tubing.
  • Increased dentist comfort, because the swivel reduces the drag of the tubing.


What are the Disadvantages of Quick Disconnect Couplers?

Every major brand of handpiece has its own proprietary connection between the handpiece and the swivel, so handpieces and swivels from different brands are not compatible.

Many manufacturers are beginning to offer handpieces that will fit other brands of couplers, but it appears to us that the KaVo MULTIflex style coupling is winning the battle to become the universal quick-connect style.


Chucking Mechanisms


What is a Chucking Mechanism?

The mechanism that allows the handpiece to hold a bur.


What are the Different Types of Chucking Mechanisms?

1. Standard Screw-Type (bur tool-type)

  • The spindle and chuck (the parts of the turbine that hold the bur) are separate.
  • A bur tool is required to insert and remove the bur; it screws the chuck down into the spindle causing the chuck to tighten around the bur.
  • Screw-type chucks can be replaced in repair.