Internal Hex Tube and Screw System

The internal Hex Tube and Screw is used for vertical screw retention of crowns and bridges, dentist-only removable fixed prosthesis, implant suprastructures, fixed complete (hybrid) dentures, and telescopic prostheses.

Tube & Screw Instructions

Internal Hex Tube and Screw System

Advantages

Easy to use. Prethreaded tubes for casting, soldering, or bonding to cast primary units.

Versatile. Multiple sizes of 1.20mm and 1.40mm diameter. Short and long available in each diameter. Same Hex used for
Pin Screw and Tube and Screw systems.

Accurate. End cutting bur provides for accurate sizing and finishing of cast collar.

Components

Tube & Screw

Internal Hex Tube and Screw System2The hex screw is a high fusing precious alloy. It can be shortened as needed, as long as the hex profile is maintained. The countersunk collar is a non-oxidizing, high fusing precious alloy. The conical hex screw perfectly fits the countersunk collar, efficiently distributing forces and creating a hygienic seal on the occlusal surface.

The sleeve is also a high fusing precious alloy, and the fixation screw holds the sleeve in place during casting, reducing the risk of molten alloy flowing into it.

Always use the largest and longest screw for the space available. The bonding technique for the tube is the most accurate method of incorporation.

Internal Hex Tube and Screw System
Internal Hex Tube and Screw System2

Complete Tube and Screw Attachment

Includes Tube, countersunk Collar, Fixation screw, and final Hex screw.

Four different options:

  • 1.2mm Short
  • 1.2mm Long
  • 1.4mm Short
  • 1.4mm Long

Fixation Screw

Internal Hex Tube and Screw System3Thread the fixation screw into the tube prior to investing and casting to protect the threads from inflow of alloy. Remove the screw after devesting. Available in both 1.2mm and 1.4mm sizes.

The fixation screw can be destroyed at temperatures above 1400 °C and by excessive overheating of the casting alloy.

Hex Screw

Internal Hex Tube and Screw System4For fixing primary and secondary parts in the mouth. Screw can only be reduced by a maximum of 1mm on the occlusal.

Countersunk Collar

Internal Hex Tube and Screw System5For casting on in the secondary part with precious or semi-precious alloy. Non-oxidizing, copper-free precious alloy. Casting-on recommended. Can also be laser-welded or soldered.

Tube & Screw Hex driver

Internal Hex Tube and Screw System7Used to thread in the original screw and complete any necessary adjustments.

Tube & Screw Thread Cutter (tap)

Internal Hex Tube and Screw System6If the screw channel is tight, or has bubbles, use the proper size end thread cutter to calibrate, or refine, the screw rest. Use with the socket key.

Tube & Screw Socket Key

Internal Hex Tube and Screw System8Used to hold the thread cutter during adjustments to the tube’s threads.