[Fissure contents in rodent molars].

The fissure contents in rodent molars were examined by means of a stereomicroscope and compared with those in caries-free human molars and premolars. As to colour, consistency and removableness, the fissure contents in the rodent molars were similar to those in human teeth. An orange substance as found in the fissures of human teeth was not detected in the fissures of rodent molars. This fact does not tell against the use of rodent molars as a study model for fissure contents.