Veneer Cementation of Glass Ceramics

BISCO Recommends

Porcelain Etchant supports surface conditioning of ceramic veneers where indicated. Porcelain Primer or Bis-Silane promotes chemical interaction with silica-based ceramics. Uni-Etch w/BAC or Select HV Etch w/BAC supports enamel conditioning. All-Bond Universal is used to support adhesion to tooth structure. Choice 2 Try-In Paste supports shade evaluation prior to final placement. Choice 2 Veneer Cement is a light-cure resin cement formulated for the cementation of glass ceramic veneers where esthetics and working time are considerations.

See below for the Step-by-Step technique.

STEP 1

Prepare

Prepare the internal surface of the restoration as instructed by the laboratory:

a. Porcelain/Lithium Disilicate: If needed, etch the veneer with hydrofluoric acid (4% Porcelain Etchant or 9.5% Porcelain Etchant) according to the manufacturer’s instructions.
b. Apply a thin coat of silane (Porcelain Primer/Bis-Silane™) to the internal surface. Wait for 30 seconds, or dry with (warm) air.

STEP 2

Temporary Restoration

Remove the temporary restorations and clean the preparations (Cavity Cleanser™ and pumice slurry). Rinse thoroughly.

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STEP 3

Try in

Try in the restorations using the corresponding shade of water-soluble try-in paste (Choice™ 2 Try-In Paste). Remove the veneers and either clean with etchant (Uni-Etch® w/BAC or Select HV® Etch w/BAC) and rinse thoroughly, or ultrasonicate in water or alcohol for 2-3 minutes. Dry the restorations.

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STEP 4

Isolate

Try in the restorations using the corresponding shade of water-soluble try-in paste (Choice™ 2 Try-In Paste). Remove the veneers and either clean with etchant (Uni-Etch® w/BAC or Select HV® Etch w/BAC) and rinse thoroughly, or ultrasonicate in water or alcohol for 2-3 minutes. Dry the restorations.

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STEP 5

Dispense

Dispense adhesive (All-Bond Universal®) in a mixing well. Apply 2 separate coats, agitating each coat for 10-15 seconds.

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STEP 6

Air Dry

Dispense adhesive (All-Bond Universal®) in a mixing well. Apply 2 separate coats, agitating each coat for 10-15 seconds.

STEP 7

Light cure

Light cure for 10 seconds.

STEP 8

Apply

Light cure for 10 seconds.

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STEP 9

Cementation

A light-cured resin cement (Choice 2 Veneer Cement), fill the internal surface of the restoration with the cement.

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STEP 10

Seat

Seat with gentle, passive pressure and light cure for 2-3 seconds to tack the veneer into place. Remove excess cement, then light cure each veneer for 40 seconds.

Veneer Cementation of Glass Ceramics - Porcelain Etchant