Abstract
The loss of camphorated monochlorophenol from cotton pellets after insertion into the pulp chamber of molars was assessed in extracted teeth and in a clinical study. Measurement of residual camphorated monochlorophenol was based on the ultraviolet spectrophotometric analysis of parachlorophenol. In extracted molars, approximately 90 to 95% was lost within 24 h. In the clinical study, the extent of loss depended on whether the tooth had been previously medicated. Cotten pellets released approximately 90% of camphorated monochlorophenol in freshly opened molars and approximately 60% in previously medicated teeth. The rapidity and extent of the loss suggest that any antibacterial action of volatile medicaments sealed into pulp chambers is of short duration.
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