The effect of two different types of forces on possible root resorption in relation to dentin phosphoprotein levels: a single-blind, split-mouth, randomized controlled trial

Progress in Orthodontics

Table 3 Root resorption craters area and volume in the two study groups

	Continuous force	Intermittent force	Mean difference (SD)	95% CI	WSR P value
	Mean ± SD		Mean difference (SD)	95% CI	WSR P value
Crater area	1.92 ± 0.82	1.48 ± 0.34	0.43 (1.01)	0.06, 0.08	0.03*
Total crater volume	0.13 ± 0.06	0.05 ± 0.03	0.08 (0.06)	0.06, 0.10	< 0.001*
Total buccal volume	0.14 ± 0.07	0.04 ± 0.03	0.10 (0.07)	0.05, 0.14	0.003*
Total lingual volume	0.14 ± 0.02	0.07 ± 0.04	0.07 (0.06)	− 0.02, 0.16	0.07
Total mesial volume	0.15 ± 0.05	0.05 ± 0.04	0.11 (0.06)	0.05, 0.18	0.03*
Total distal volume	0.06 ± 0.001	0.07 ± 0.02	− 0.02 (0.03)	− 0.26, 0.22	0.18
Total cervical volume	0.16 ± 0.06	0.05 ± 0.04	0.11 (0.07)	0.06, 0.15	0.002*
Total middle volume	0.08 ± 0.02	0.04 ± 0.02	0.04 (0.03)	− 0.03, 0.10	0.11
Total apical volume	0.14 ± 0.02	0.05 ± 0.02	0.09 (0.03)	0.06, 0.12	0.03*
Friedman test
Buccal–lingual–mesial–distal	0.31	0.20
Cervical–middle–apical	0.10	0.69