Colophony in Dentistry: Routes of Exposure and Reported Reactions

Area of Science:

• Allergy and Immunology
• Dermatology
• Dental Materials Science

Background:

• Colophony, a resin from coniferous trees, is widely used in personal care, medications, and occupational materials due to its adhesive and water-resistant properties.
• It is a common cause of allergic contact dermatitis, yet its presence and implications in dentistry are often overlooked by medical professionals.
• Dental materials such as periodontal dressings, cements, and varnishes can be sources of colophony exposure.

Purpose of the Study:

• To review existing literature on oral reactions to colophony.
• To discuss the clinical relevance of colophony allergy in dental settings for both dentists and dermatologists.
• To raise awareness of colophony as a potential allergen in dental materials.

Main Methods:

• Literature review of published cases of oral reactions to colophony.
• Analysis of reaction types and associated dental materials.
• Discussion of clinical implications and recommendations for healthcare providers.

Main Results:

• The most frequent oral reaction observed was allergic contact stomatitis, often occurring after the use of colophony-containing periodontal dressings or fluoride varnishes.
• Other reported reactions include allergic contact cheilitis, oral lichen planus, and systemic contact dermatitis.
• Literature on this topic is sparse, with limited publications in the last decade.

Conclusions:

• Colophony in dental materials can lead to significant oral allergic reactions, including stomatitis and cheilitis.
• Dentists and dermatologists need to be aware of colophony's potential as an oral allergen.
• Patients with known colophony allergy should be counseled about potential exposure from dental materials and procedures.