THE STUDY OF RELATIONSHIP BETWEEN THE CORONAL PULPAL HISTOPATHOLOGICAL CHANGES AND THE DENTINAL THICKNESS OF CAVITY BASALPART IN DECIDUOUS TEETH WITH DEEP DENTIN CARIES

Objective:To study the clinical significance of the relationship between the coronal pulpal histopathological changes and the dentinal thickness of cavity basalpart in deciduous teeth with deep dentin caries. Methods:45 deciduous molars with occlusal deep caries were selected at random.The patient did not receive any antibiotic for one month. Coronal pulpal histopathological changes were observed with optical microscopic technique. 45 residual dentinal thicknesses of cavity basalpart were measured accurately. Results:Coronal pulp tissue of 77.8% of deciduous teeth with deep caries showed chronic inflammation to various degree or chronic pulpitis with acute attack. There was a negative correlation between the grade of coronal pulpal histopathological changes and the dentinal thicknesses of cavity basalpart in 45 deciduous molars with deep dentin caries (r′ s=-0.417,P0.005). Conclusion:The thiner the residual dentinal thickness of cavity basalpart was, the more serious inflammation appeared in coronal pulp tissue of deciduous teeth with deep caries.