Research Library

Premium Pulp response to and cariogenicity of, a strain of of Streptococcus mutans
Publication year1989
Publication title
international endodontic journal
Resource typeJournals
PublisherBlackwell Publishing Ltd
Summary. Gnotobiotic rats mono‐infected with Streptococcus mutans (NCTC 10919) were maintained on a high sucrose diet in an isolator. When they were 8 weeks old the pulps of their maxillary first and second molars were mechanically exposed and left open to the oral environment. The rats were sacrificed in groups after 7 and 28 days. Thirty‐seven teeth were available for study in the 7‐day group, and 30 teeth in the 28‐day group. The test S. mutans was non‐cariogenic. After 7 days, necrosis of the superficial layers of the pulp was noted; however, after 28 days pulpal necrosis was much more extensive and calcific repair was observed in only one‐third of the teeth examined. The microorganism did not provoke inflammation in the pulp or periapical tissues. This is the second strain of S. mutans tested in this manner. These results are very similar to those reported previously for S. mutans (NCTC 10449) and strengthens the view that organisms of the S. mutans group have a low pathogenicity for the pulp.
Subject(s)bacteria , biology , dentistry , genetics , medicine , molar , pulp (tooth) , pulp necrosis , streptococcus mutans
SCImago Journal Rank1.988

Seeing content that should not be on Zendy? Contact us.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here