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Table 2 The scores for dental caries in rats (Keyes’ score) with S. mutans strains

From: Synonymous point mutation of gtfB gene caused by therapeutic X-rays exposure reduced the biofilm formation and cariogenic abilities of Streptococcus mutans

Group

Incidence of sulcal caries

Severity of sulcal caries

Ds

Dm

Dx

WT S. mutans

24.75 ± 1.1

18.25 ± 1.92

14.25 ± 1.1

10.5 ± 1.1

#858

19.75 ± 0.8

14.5 ± 1.5

9.75 ± 0.8

5.75 ± 2.5

gtfB 2043 T>C

21 ± 0.7

15.5 ± 0.5

10.5 ± 0.5

6.25 ± 2.5

ΔgtfB

17.75 ± 1.5

13 ± 2.5

9 ± 0.7

3.75 ± 0.8

  1. Ds, the involvement of 1/4 of the dentin between the enamel and the pulp chamber
  2. Dm, the involvement of 1/4 ~ 3/4 of the dentin region
  3. Dx, caries progression beyond 3/4 of the dentin region
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Cell & Bioscience

ISSN: 2045-3701

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