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. 2024 Jul 30;24:866. doi: 10.1186/s12903-024-04589-9

Table 3.

Comparison of calcium level (% mass) at different repeated points of the measurement interval in the three studied groups

Ca (% mass) Progression Test of significance
p value
Biomin
(n=10)
Biomin and Laser
(n=10)
Control
(n=10)
Baseline
    - Min-Max 24.85-34.42 27.81-32.07 25.68-37.98

F(df=2)=0.651

p=.529 NS

    - Mean±SD 31.34X,Z±2.74 29.98X,Z±1.40 30.91X±3.58
    - SE of Mean 0.87 0.44 1.13
    - 95.0% CI for Mean 29.38-33.30 28.98-30.98 28.35-33.47
    - 25th Percentile – 75th Percentile 30.35-33.17 29.13-31.51 28.99-33.42
After Demineralization
    - Min-Max 18.95-32.08 16.38-24.42 16.07-23.84

F(df=2)=1.625

p=.216 NS

    - Mean±SD 22.64Y±4.02 20.86Y±2.69 20.16Y,Z±2.59
    - SE of Mean 1.27 0.85 0.82
    - 95.0% CI for Mean 19.76-25.51 18.93-22.78 18.31-22.01
    - 25th Percentile – 75th Percentile 19.52-23.22 20.27-22.52 18.70-22.04
After Remineralization
    - Min-Max 21.68-36.41 25.45-31.77 19.58-25.85

F(df=2)=16.936

p<.001*

    - Mean±SD 29.49a,b,X,Z±3.99 29.14a,b,X,Z±2.39 22.66c,Y,Z±2.14
    - SE of Mean 1.26 0.76 0.68
    - 95.0% CI for Mean 26.64-32.35 27.43-30.85 21.13-24.19
    - 25th Percentile – 75th Percentile 28.18-31.48 26.51-30.97 21.18-25.07

One-way repeated measures analysis

p value

F(GG)(df=1.260)=16.179

p=.001*

F(df=2)=71.922

p<.001*

F(GG)(df=1.186)=44.448

p<.001*

Percentage Change (%) (Baseline vs After Demineralization)
    - Min-Max -41.15 - 3.45 -44.43 - -13.81 -57.69 - -19.24

F(df=2)=0.710

p=.501 NS

    - Mean±SD -27.56±12.49 -30.26±10.14 -33.77±12.26
    - SE of Mean 3.95 3.21 3.88
    - 95.0% CI for Mean -36.50 - -18.63 -37.51 - -23.01 -42.54 - -25.00
    - 25th Percentile – 75th Percentile -34.88 - -23.74 -36.79 - -21.20 -44.48 - -23.62
Percentage Change (%) (Baseline vs After Remineralization)
    - Min-Max -30.09 - 19.97 -17.20 - 14.24 -37.01 - -16.49

F(df=2)=16.412

p<.001*

    - Mean±SD -5.61a,b ±12.43 -2.56a,b±9.83 -26.24c±7.21
    - SE of Mean 3.93 3.11 2.28
    - 95.0% CI for Mean -14.50 - 3.29 -9.59 - 4.47 -31.39 - -21.08
    - 25th Percentile – 75th Percentile -10.20 - -1.84 -8.99 - 3.16 -31.94 - -17.56
Percentage Change (%) (After Demineralization vs After Remineralization)
    - Min-Max -32.42 - 66.41 23.36 - 61.84 1.73 - 60.86

F(df=2)=4.686

p=.018*

    - Mean±SD 34.20a,b,c ±27.93 40.88a,b±12.23 13.94a,c±18.18
    - SE of Mean 8.83 3.87 5.75
    - 95.0% CI for Mean 14.21 - 54.18 32.13 - 49.63 0.93 - 26.94
    - 25th Percentile – 75th Percentile 27.05 - 49.95 32.54 - 51.11 4.71 - 14.77

Bonferroni Pairwise multiple comparison: mean of groups that is labeled with similar superscript letter are statistically not significantly different

Min. – Max. Minimum – Maximum, S.D. Standard Deviation, SE Standard error, CI: Confidence interval, df degree of freedom, GG Greenhouse-Geisser correction

*: Statistically significant (p<.05), NS: Statistically not significant (p≥.05)

Superscript letters for intergroup comparison: Biomin group assigned letter (a), Biomin and laser group assigned letter (b), and control group assigned letter (c)

Superscript letters for intragroup comparison: Baseline assigned letter (x), After Demineralization assigned letter (y), and after Remineralization assigned letter (z)