Bisco Porcelain Etchant 9.5%

• Hydrofluoric Acid Concentration: 9.5

Etching Porcelain Restorations prior to cementation:

• Protective eyewear and gloves must be worn by operator and assistant.
• If the labs has not already etched the restoration, remove cap from Porcelain Etchant, securely attach dispensing tip and verify etchant flow prior to application. Apply Porcelain Etchant (9.5% HF) to the dry porcelain surface for 90 seconds. Care must be taken to avoid having the etchant contact glazed porcelain surfaces since these surfaces will lose their gloss.
• Rinse with a copious amount of water and air dry. The etched surface should appear dull and frosty (if porcelain has a white/ chalky appearance, agitate a moist microbrush on the porcelain to remove salt and debris created by etching).
• Apply one to two thin coats of silane with a brush to the etched internal surface of the restoration according to manufacturer instructions. Dry with air syringe.
• Proceed with adhesive applications and cementation according to the manufacturer's instructions.

Repair of Porcelain Restorations:

• Protective eyewear must be worn by patient, operator and assistant. Protective gloves must be worn by operator and assistant.
• Remove the glaze and bevel (45 degree) the porcelain around the area to be repaired. (Remove any old composite remaining from previous repairs).
• Isolate the area to be etched with a rubber dam. Bisco's Barrier Gel should be placed where etching is not desired.
• Remove cap from Porcelain Etchant, securely attach dispensing tip and verify etchant flow prior to applying intraorally. Apply Porcelain Etchant then rinse with a copious amount of water and air dry. The etched surface should appear dull and frosty (if porcelain has a white/ chalky appearance, agitate a moist microbrush on the porcelain to remove salt and debris created by etching, rinse and dry).
• Apply one to two thin coats of silane with a brush to the etched surface of the restoration and allow to dwell for 30 seconds. Dry with air syringe.
• Apply an adhesive system according to the manufacturer's instructions. Complete the repair with composite and finish/ polish.

• Porcelain Restorations: Indicated for cementation of porcelain restorations and repair of porcelain restorations.
• Improves Bond Strength: Improves the mechanical bond between porcelain and adhesive/cement by increasing the surface area of the porcelain. The effect is similar to sandblasting but is more controlled and effective.
• Improved Bonding Strength: Increases the surface area of porcelain, facilitating a strong and durable bond with composite resin materials.
• Controlled Application: Comes in a gel form and a convenient syringe format, allowing for precise and controlled application.
• Microscopic Roughening: Microscopically roughens the feldspathic porcelain or glass surface, enhancing mechanical bonding.
• Comparable to Sandblasting: Provides similar effects to sandblasting but in a more controlled and effective manner.
• Enhances Restoration Longevity: Promotes robust bonding, contributing to the longevity and durability of dental restorations.
• Porcelain Restorations: Indicated for cementation of porcelain restorations and repair of porcelain restorations.
• Improves Bond Strength: Improves the mechanical bond between porcelain and adhesive/cement by increasing the surface area of the porcelain. The effect is similar to sandblasting but is more controlled and effective.
• Improved Bonding Strength: Increases the surface area of porcelain, facilitating a strong and durable bond with composite resin materials.
• Controlled Application: Comes in a gel form and a convenient syringe format, allowing for precise and controlled application.
• Microscopic Roughening: Microscopically roughens the feldspathic porcelain or glass surface, enhancing mechanical bonding.
• Comparable to Sandblasting: Provides similar effects to sandblasting but in a more controlled and effective manner.
• Enhances Restoration Longevity: Promotes robust bonding, contributing to the longevity and durability of dental restorations.