<prompt> Certain oral conditions may preclude the use of the rubber dam; these conditions include:Teeth that have not erupted sufficiently to support a retainerSome third molarsExtremely malpositioned teethAll of the above  <response>: 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 