Intraoral Repair - Z-Prime Plus
The intraoral repair restorative repairs chipped or fractured porcelain on existing restorations using adhesive and composite techniques to avoid full replacement.
BISCO Recommends
Porcelain Etchant is used to condition the ceramic surface for micromechanical retention. Porcelain Primer promotes chemical interaction with porcelain. Z-Prime Plus supports adhesion to exposed metal or zirconia surfaces when present. Dual-Cured Opaquer is used where masking of underlying metal is desired. Porcelain Bonding Resin is a wetting agent to help make the cement or material more spreadable. Quantium is used as a restorative composite to replace missing structure and support esthetic repair.
See below for the Step-by-Step technique.
STEP 1
Isolate the area
Isolate the area to be repaired. Remove the glaze and bevel (45 degrees) the porcelain around the area to be repaired. Sandblast or abrade with a coarse diamond bur. Rinse with water and air dry.
STEP 2
Place
Place Barrier Gel on the gingival tissue and porcelain to protect areas where etching is not desired.
STEP 3
Apply
Apply 9.5% Porcelain Etchant to the dry porcelain surface for 90 seconds. Suction the etchant with high volume evacuation, then rinse with water and air dry. The etched porcelain should appear dull and frosty.
STEP 4
Apply
Apply 1 coat of silane (Porcelain Primer) to the etched porcelain and allow to dwell for 30 seconds. Dry with (warm) air syringe.
STEP 5
Apply
1 coat of Z-Prime™ Plus to the exposed metal/zirconia/alumina and dry with an air syringe for 3-5 seconds.
STEP 6
If metal masking
If metal masking is required, use Dual-Cured Opaquer Base and Catalyst, one drop of each, onto a mixing pad and mix with a brush tip. Apply a thin coat of the mixture only to the metal surface. Allow to self cure, or light cure for 5 seconds.
STEP 7
Apply
Apply a thin layer of Porcelain Bonding Resin to the repair site. Apply a hybrid composite (Quantium™) to replace fractured porcelain and light cure, finish/polish.
