Sop - Basic Hazard Spotting / Risk Assessment s1

SOP - BASIC HAZARD SPOTTING / RISK ASSESSMENT DATE: 27th March 2017 DEPARTMENT DRAFTING Restorative SOP: SUBSTANCE: Hydrofluoric Acid INDICATIONS: Etching porcelain crowns, veneers and inlays or for etching fractured porcelain surfaces prior to cementation or bonding with resins and resin cements. It can also be used to etch hybrid composites. PRESENTATION: Porcelain Etch Gel Kit contains: 4 (1.2 ml) syringes and 8 pre- bent applicators PROPERTIES: Thixotropic Stays where placed Washes off easily Does not stain ceramic INSTRUCTIONS FOR USE: STAFF USAGE ONLY & INTRA-ORAL USAGE DISCOURAGED 1. Protective eyewear must be worn by practitioner, assistant and patient. Protective gloves must be worn by practitioner and assistant. 2. Place rubber dam to isolate operative site and protect soft tissue. 3. Assistant must stand ready at chairside and hold vacuum tip 2-3 inches from porcelain surface during the etching process to evacuate acid fumes. 4. Securely attach 25-gauge luer lock applicator tip to syringe. Carefully start the flow of Porcelain Etch Gel on a pad and immediately dispose of this sample. Do not start flow in patient’s mouth. For maximum control of flow, do not push on plunger with thumb. It is recommended instead to hold syringe barrel between thumb and forefinger while resting plunger in palm of hand. Gently pull back with thumb and forefinger to start flow. Use a new dispenser needle for each patient. 5. Carefully apply Porcelain Etch Gel to porcelain surface and leave for one minute while evacuating fumes with vacuum. Some ceramic materials are resistant to etching. To achieve a surface suitable for bonding to these materials, air abrasion is recommended. Creating mechanical retention is advantageous. Cap syringe immediately after use. 6. Rinse surface with copious amounts of water. 7. If using EmbraceTM First-CoatTM, dry porcelain surface and follow instructions for use for First-CoatTM or the EmbraceTM Restoration and PFM Repair Kit. If using Pulpdent Silane Bond Enhancer, dry porcelain surface with clean uncontaminated air, keep this surface dry, and follow instructions for use for silane. 8. Proceed with repairs of fractured porcelain teeth or with cementation of porcelain veneers or inlays. LIST THE HAZARDS: Skin and eye Corrosion / Acute Toxicity – oral/inhalation/skin RISK: Corrosive and Very toxic WHO MIGHT BE HARMED: Patients, students, staff RISK ADEQUATELY Yes CONTROLLED SPECIAL WARNINGS & General Information: VERY CORROSIVE! Toxic! Although PRECAUTIONS: Porcelain Etch Gel is buffered, diluted (9.6%) hydrofluoric acid that has been incorporated into a gel, this product is still very corrosive. AVOID ALL CONTACT WITH PRODUCT. May be fatal if inhaled, swallowed or absorbed through skin. Causes severe burns. Acute effects may be delayed.

Eye Contact: Call for emergency medical care. Immediately (within 1 minute) flush eyes and surrounding skin with running water for 30-60 minutes, holding lids apart to ensure flushing of the entire surface. Get emergency medical attention only after the flushing is complete unless it can be continued during transport.

Skin Contact: Call for emergency medical care. Immediately flush skin with running water for 30- 60 minutes while removing contaminated clothing and shoes. Get emergency medical attention only after the flushing is complete unless it can be continued during transport. Apply 2.5% calcium gluconate gel to the exposed area (rubbing it in well) every 15 minutes; if calcium gluconate is not available, apply benzethonium chloride or benzalkonium chloride to the exposed area.

Ingestion: Call for emergency medical care. Do not induce vomiting. If conscious, have patient rinse mouth and drink a large amount of water to dilute. Never give anything by mouth to an unconscious person

Inhalation: Remove patient to fresh air. Administer oxygen, artificial respiration and/or CPR as necessary. Seek immediate medical care. Have patient lie down; keep quiet, warm.

Precautions for first responders: Avoid all contact with material. Wear face shield, gloves, lab coat. Awareness of burns may be delayed. Begin first aid as soon as possible. Have someone else call for emergency medical care and ventilate area. STORAGE: For use by dental professionals only. Keep tightly capped in original container and a bag. Do not add any other material to container or bag. Empty container may contain explosive or flammable residue.

Keep containers tightly closed. Recap immediately after use. Store product in original container at cool room temperature (<25°C) and in a dry, well-ventilated area. Avoid water, heat, sparks, flame, organic substances, direct sunlight.

For a small spill (or removal of excess material): Absorb or wipe up spill with inert material, such as absorbent paper towels, and transfer to container for disposal. Wash any spill site with water or sodium bicarbonate if available. If available, use a commercial ‘spill kit’.