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)