Nano-Hydroxyapatite Gel and Its Effects on Remineralization of Artificial Carious Lesions
Table 3
Analysis of variance (ANOVA) of hardness at baseline (HB), hardness upon demineralized process (HD), hardness upon an applied remineralizing agent (HA), hardness difference determined between after demineralization and after remineralization (HAD-diff = HA − HD), and percentage of hardness recovery (%HR) after applied remineralizing agents (HA) compared to demineralization (HD).
A. ANOVA of hardness at baseline (HB)
Source
SS
df
MS
F
Between groups
59.624
4
14.906
0.144
0.965
Within group
9,862.904
95
103.820
Total
9,922.527
99
B. ANOVA upon acid-activated demineralized process (HD)
Source
SS
df
MS
F
Between groups
429.841
4
107.460
0.222
0.926
Within group
46,035.366
95
484.583
Total
46,465.207
99
C. ANOVA upon administration of the remineralizing agent (HA)
Source
SS
df
MS
F
Between groups
15,869.618
4
3,967.405
7.267
0.001
Within group
51,862.680
95
545.923
Total
67,732.298
99
D. ANOVA for the difference of hardness between demineralization and remineralization (HAD-diff)
Source
SS
df
MS
F
Between groups
16,952.678
4
4,238.169
53.763
0.001
Within group
7,488.908
95
78.831
Total
67,966.394
100
E. ANOVA of the percent of the recovery of hardness (%HR)
Source
SS
df
MS
F
Between groups
3,203.24
4
800.81
47.061
0.001
Within group
1,616.57
95
17.017
Total
4,819.813
99
SS: sum of squares, df: degree of freedom, MS: mean square, F: F-ratio, and : value
