Pulpal reactions in rat incisors to Caridex.
This study examined the in vivo effects of Caridex, a chemomechanical caries removal system, on rat pulpal tissue. Rat incisors were opened and the pulps exposed to Caridex or physiological saline and sealed with calcium hydroxide. After various time periods, teeth were extracted and examined by light microscopy. Histological evaluation revealed an almost identical response in both test and control teeth which consisted of a transient inflammatory reaction and a limited necrosis in adjacent pulp tissue. Within seven days, formation of hard tissue matrix was seen below the necrotic area and on pulpal walls. It was suggested that the high pH of Caridex may have contributed to the necrotizing effect of calcium hydroxide in adjacent pulp tissue and the formation of hard tissue matrix. Additionally, the solution is most probably bactericidal. The results suggest that the system can be used as a caries removal agent on humans without unfavourable side effects on the dental pulp.
Wedenberg
C
C
Restorative Dentistry Section, School of Dental Science, University of Melbourne.
Bornstein
R
R
D000613:Aminobutyrates / Q000494:pharmacology*; D000818:Animals; D002126:Calcium Hydroxide; D003737:Dental Cavity Preparation; D003782:Dental Pulp / Q000187:drug effects* / Q000473:pathology; D003785:Dental Pulp Capping; D003790:Dental Pulp Necrosis / Q000473:pathology; D006863:Hydrogen-Ion Concentration; D007180:Incisor; D009804:Odontoblasts / Q000473:pathology; D011671:Pulpitis / Q000473:pathology; D051381:Rats; D011919:Rats, Inbred Strains; D012965:Sodium Chloride / Q000494:pharmacology; D012972:Sodium Hydroxide / Q000494:pharmacology; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013997:Time Factors; D015035:Zinc Oxide-Eugenol Cement
D000613:Aminobutyrates; D015035:Zinc Oxide-Eugenol Cement; D012965:Sodium Chloride; D012972:Sodium Hydroxide; C018172:GK 101E; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide