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Table 2 Change in biofilm acid tolerance scores (change = difference in score ≥ 2) between baseline and 1-month follow-up in 60 tooth sites (biofilm collected from 20 individuals, three locations; between central inscisors, approximal surface between canines and 1st premolar and approximal surface between 2nd premolar and 1st molar. Biofilm collected from all quadrants and pooled in one sample)

From: Acid tolerance properties of dental biofilms in vivo

No change in acid tolerance score Increased acid tolerance score Decreased acid tolerance score
Baseline – 1montha Sites (n) Baseline – 1montha Sites (n) Baseline – 1montha Sites (n)
1–1 26 1–4 2 3–1 4
1–2 9 1–3 1 4–1 1
2–1 6 2–4 1   
2–2 1     
2–3 3     
3–2 2     
3–3 2     
Total (n): 51   4   5
  1. a Acid tolerance score
  2. n = number