Master's Touch Laboratories, Inc. CERAMICS
(618) 397-7775     •     (800) 843-8426 10606 LINCOLN TRAIL, FAIRVIEW HEIGHTS, IL 62208

Standard Procedures for Fixed Prosthetics

This page details the standard procedures followed by Master's Touch Laboratories, Inc. for typical fixed prosthetics cases.
(Your standing orders or special instructions on a work order take priority.)


Die-Keen is used to pour impressions received by the laboratory. Stone is vacuum mixed to exact water/powder ratios to insure consistent hardness and expansion. A second pour-up of all fixed prosthetics impressions is made and delivered untrimmed as a prover die.

Impressions for crowns to fit an existing partial denture should be full arch and taken with the partial in place. Please allow our technicians to pour the impression.

Model Work

Full arch working models are set up using Sterngold's Accu-Drill precision parallel dowel pin system. Each die has a minimum of two parallel pins to insure accurate occlusal and proximal contacts. Triple-Tray type impressions are set up using the Die-Maker, Accutrac, or Metamorphosis system.


Most cases are mounted using acrylic crown & bridge articulators. This is our articulator of choice because it has superior freedom of movement. When this articulator is used in conjunction with full arch working and opposing models it allows our technicians to fabricate a superior fitting restoration that is free from excursive interferences and symmetrical with existing dentition. Most cases are delivered mounted.


Dies that are used in the fabrication of bridges or splinted units are not sectioned between abutments. This minimizes warping and insures proper fit.

Die Trimming

Margins are trimmed, marked, and any undercuts are blocked out. Die hardener and cement spacer is applied to insure full seating and correct marginal fit. The number of layers of spacer is custom tailored to your materials and techniques.

Fixed Framework Design

Single and bridge unit frameworks are usually designed with very low metal linguals. This design is aesthetically pleasing to the patient because little or no metal shows. Frame design that shows no metal is available on request.

Multi-unit restorations of five or more units are recommended for framework try in. If they are not tried in they are not guaranteed.

Pontic Design

Modified ridge lap pontic design is usually used. The pontic contacts the tissue from the crest of the ridge to the buccal-gingival pontic tip. Tissue contact areas on the stone dies are lightly relieved.


Small cases are cast using the conventional centrifugal method. Long span bridges are cast using the Rousseau Casting System. This allows our technicians to consistently fabricate smooth, dense castings that have unsurpassed marginal fit. No other system can produce better fitting frameworks.


Porcelain is built using advanced layering techniques. Nine powder restorations are standard. Pits and fissures in posterior units are lightly stained to give a natural appearance.

Special art work (Tattooths) are available on request.

If a selected shade is other than Vita Lumin Classical, Vitapan 3D-Master, or Dentsply Trubyte Bioform, send the shade tab to insure an accurate match. The Vita Lumin Classical shade guide is preferred.