Sealing properties of Cavit-W temporary filling material were tested in vivo in the control group of a usage experiment in which root canal disinfectants were studied. Histologic examination (Brown and Brenn staining) of the root canals showed a statistical significance in the occurrence of microorganisms with increase in time. Microleakage past the filling material was considered to be responsible.

Animals↗

PubMed1980

Hard-tissue resorption and deposition after endodontic instrumentation.

Hard-tissue resorption and deposition following endodontic instrumentation were studied histologically in forty-one monkey teeth after 2, 7, and 42 days. No medicaments and no root canal filling materials were used. The number and length of lacunae and areas of resorption of the root canal wall, the root surface, and the lamina dura were counted and measured. Resorption, stimulated by instrumentation, was observed after 7 days at all sites. Resorption was slight at the root canal wall and at the root surface and was significantly more severe than normal osteoclastic replacement in the adjacent lamina dura. After 42 days the reaction had subsided at the three sites, but none of the tissue had returned to normal. Inflammatory reaction due to infection of the root canal appeared to enhance resorption after 42 days at the root canal wall and the lamina dura, but this was not observed at the root surface.

Alveolar Process↗

PubMed1980

Tissue reactions to sodium hypochlorite and iodine potassium iodide under clinical conditions in monkey teeth.

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Animals↗

PubMed1979

Antimicrobial effectiveness in endodontic therapy using formocresol and two new alcoformal agents. Mechanical preparation during the second visit.

Antimicrobial effectiveness of alcoformol two agents (AF 8.85 and AF 3.5) was studied in a clinical trial by means of bacteriologic examination of the root canals. After the initial culture was taken, one of the disinfectants was sealed in the pulp chamber for one week. At the second visit, the root canal was reamed and a second culture was taken. It was found that AF containing 3.5 percent formaldehyde is a satisfactory disinfectant for root canals of vital teeth. A concentration of 8.75 percent was needed for disinfection of teeth with necrotic pulps.

Anti-Infective Agents, Local↗

PubMed1979

Antimicrobial effectiveness in endodontic therapy using formocresol and two new alcoformol agents. Mechanical preparation during the first visit.

Antimicrobial effectiveness of two alcoformol agents (AF 8.75 and AF 3.5) was studied in a clinical trial by means of bacteriologic examination of the root canals. After the initial culture was taken, the root canal was reamed and a second culture was taken. One of the disinfectants was sealed in the pulp chamber for one week. At the second visit, a third culture was taken. No statistically significant differences were found between the effectiveness of the disinfectants; the cumulative effect of mechanical preparation and disinfection was such that initially positive teeth did not differ significantly from initially negative teeth when treated by this procedure.

Anti-Infective Agents, Local↗

PubMed1979