Skin allergy patch testing

Skin allergy patch testing is a diagnostic tool used to identify specific allergens that cause skin irritation or allergic reactions. In dentistry, patch testing is used to:

• Identify allergic reactions to dental materials (e.g., metals, resins, cements)
• Diagnose oral allergic contact dermatitis
• Determine the cause of oral lesions or rashes
• Guide treatment decisions for patients with known allergies

The process involves:

• Applying small amounts of potential allergens to the skin (usually on the back or arm)
• Covering the area with patches or dressings
• Leaving the patches on for 24-48 hours
• Evaluating the skin for reactions (e.g., redness, itching, blistering)

Common allergens tested in dentistry include:

• Metals (e.g., nickel, chrome, mercury)
• Resins (e.g., epoxy, acrylic)
• Cements (e.g., zinc oxide, eugenol)
• Rubber products (e.g., latex, gloves)

Patch testing helps dentists:

• Choose alternative materials for patients with allergies
• Develop treatment plans that minimize allergic reactions
• Provide safe and effective care for patients with allergies

Note: Patch testing should only be performed by a trained healthcare professional. Your dentist will determine if patch testing is necessary for your specific needs.