1. Prevention of the ingress of a known virulent bacterium into the root canal system by intracanal medications.
- Author
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Roach RP, Hatton JF, and Gillespie MJ
- Subjects
- Analysis of Variance, Anti-Infective Agents, Local administration & dosage, Calcium Hydroxide administration & dosage, Calcium Hydroxide therapeutic use, Camphor administration & dosage, Camphor therapeutic use, Chlorhexidine administration & dosage, Chlorhexidine therapeutic use, Chlorophenols administration & dosage, Chlorophenols therapeutic use, Dental Restoration, Temporary, Drug Combinations, Gels, Humans, Methylcellulose administration & dosage, Methylcellulose therapeutic use, Ointments, Root Canal Preparation methods, Statistics as Topic, Time Factors, Anti-Infective Agents, Local therapeutic use, Chlorhexidine analogs & derivatives, Dental Pulp Cavity microbiology, Enterococcus faecalis drug effects, Root Canal Irrigants therapeutic use, Root Canal Therapy
- Abstract
Contamination of the root canal system by persistent, enteric bacteria via leakage through interim restorations has been well documented. This in vitro study evaluated the ability of interappointment medications to prevent contamination of the root canal system by Enterococcus faecalis. Coronally unsealed, medicated tooth roots fixed in a closed system were contaminated daily with a standardized, aerobic, broth culture of E. faecalis. Four medications were evaluated (n = 15): group A, calcium hydroxide/methylcellulose paste; group B, camphorated parachlorophenol/calcium hydroxide paste; group C, 1% chlorhexidine/methylcellulose gel; and group D, calcium hydroxide points. The mean number of days to contamination as indicated by turbidity in the closed system was the following: group A, 37; group B, 46; group C, 16; group D, 5; and a positive control (no medication), 3. A one-way analysis of variance with a Scheffe post hoc test (p = 0.05) detected significant differences in effectiveness with A and B superior to C and D, and C superior to D.
- Published
- 2001
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