Margin Porcelain

Problem / Question

After glazing the margin no longer fits well.

Solution / Answer

Use MRP at this stage. Fire without vacuum up to a high temperature of 850C.

Problem / Question

After glazing, the fit was no longer excellent. Using only MRP, the shade could not be controlled.

Solution / Answer

Use a 1:1 mixture of MRP and the appropriated shade(s) of margin porcelain. Bake it up to a High Temp of 900C without vacuum.

Problem / Question

The margin porcelain area is coming out a little darker than ideal.

Cause

Solution / Answer

Apply the margin porcelain so that it has zero thickness at the labial/buccal edge. Cutback the Margin porcelain so that the labial/buccal angle of the triangular structure is less than 45 degrees.

Problem / Question

After the margin porcelain build up is complete, when removing the unit from the model, some of the margin porcelain sticks to the model.

Solution / Answer

First treat the model surface using Noritake Stone Hardener. Then apply Magic Separator.