Certain oral conditions may preclude the use of the rubber dam; these conditions include:

Certain oral conditions may preclude the use of the​ rubber dam; these conditions include: Teeth that have​ not erupted sufficiently to support a retainer. Some​ third molars. Extremely malpositioned teeth. In​ addition, patients suffering from asthma may not tolerate the rubber dam if breathing through the nose is​ difficult. Sturdevants operative dentistry 4th edition page 446