Table 5.

Inter group comparisons: Mean comparison between † D2 and ‡ D3 bone densities with different time intervals

Variables	3 months	6 months	9 months	1 year	1.5 years	2 years	2.5 years	3 years
Maxillary central incisors, P	0.07, 0.000*	0.22, 0.000*	0.03, 0.208	0.02, 0.169	0.01, 0.163	0.01, 0.247	0.04, 0.000*	0.01, 0.161
Maxillary lateral incisors, P	0.04, 0.000*	0.20, 0.000*	0.09, 0.000*	0.05, 0.000*	0.07, 0.000*	0.06, 0.000*	0.07, 0.000*	0.04, 0.000*
Maxillary canines, P	0.00 0.859	0.10, 0.000*	0.12, 0.000*	0.05, 0.000*	0.01, 0.318	0.02, 0.014*	0.02, 0.006*	0.00, 0.707
Maxillary anteriors (Group I), P	0.01, 0.019*	0.18, 0.000*	0.06, 0.000*	0.00, 0.229	0.01, 0.000*	0.01, 0.038*	0.04, 0.000*	0.01, 0.000*
Mandibular second premolars, P	0.12, 0.000*	0.26, 0.000*	0.00, 0.610	0.08, 0.000*	0.08, 0.007*	0.03, 0.001*	0.02, 0.124	0.00, 0.327
Mandibular first molars, P	0.12, 0.000*	0.22, 0.000*	0.16, 0.000*	0.02, 0.122	0.07, 0.000*	0.05, 0.000*	0.02, 0.004*	0.02, 0.001*
Mandibular second molars, P	0.00, 0.780	0.01, 0.684	0.01, 0.376	0.05, 0.000*	0.03, 0.000*	0.01, 0.018*	0.00, 0.718	0.00, 0.295
Mandibular posteriors (Group II), P	0.08, 0.000*	0.17, 0.000*	0.05, 0.000*	0.03, 0.000*	0.03, 0.000*	0.03, 0.000*	0.00, 0.541	0.02, 0.028*

*Mean difference is significant at 0.05 level; † D2 indicates 750-1250 Hounsfield Units and ‡ D3 indicates 375-750 Hounsfield Units in CT reformatted images. CT: Computed Tomography