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J Korean Acad Conserv Dent. 2009 Jan;34(1):38-41. Korean. Original Article.
Park JH , Shin HJ , Park SH , Kim JW , Cho KM .
Department of Conservative Dentistry, Graduated school, Kangnung National University, Korea.
Department of Conservative Dentistry, College of Medicine, A-jou University, Korea.

When we use the total-etch dentin adhesive system for composite resin restorations, gel or liquid acid etchant such as 37% phosphoric acid is commonly used. Thirty seven percentage phosphoric acid is very powerful erosive agent, and can cause severe harmful effects when it contacts with an oral mucosa and facial skin. This case describes iatrogenic chemical burn on facial skin caused by phosphoric acid which was happened during composite resin restorative procedure. Chemical burn by acid etchant can be evoked by careless handling of remnant and syringe. In order to prevent these iatrogenic injuries, we should check the complete removal of the etching agent both in intra and extra-oral environments after etching and rinsing procedure and it is necessary to use of the rubber dam or isolation instruments. If accidental burn were occurred, immediate wash with copious water. And bring the patient to the dermatologist as soon as possible.

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