Scientific rationale and cost effectiveness of routine use of rubber dam in clinical practice.

The rubber dam was first developed and put to use in the 19th century by S.C. Barnum. Since then, the use of the rubber dam in dentistry has become mandatory especially during root canal treatment. Various irrigation solutions which are used during root canal treatment have toxic effects on the soft tissues around the teeth. This can be prevented or minimized when rubber dam is put to use. Similarly for esthetic dentistry, optimum results are obtained if the working area is protected from contamination by saliva.