Table 5.

Relationship Between Severity of Open Gingival Embrasure and Parameters Related to Treatment by Simple Ordinary Logistic Regression Analysis

	Maxilla			Mandible
	B	SE	Significance	B	SE	Significance
Duration, mo	0.001	0.001	NS	0.001	0.001	NS
Age, y	0.058	0.029	*	0.036	0.027	NS
Δ U1 to SN/Δ IMPA, °	−0.043	0.026	NS	−0.110	0.350	*
Horizontal movement of U1/L1, mm	−0.153	0.066	*	−0.110	0.061	NS
Vertical movement of U1/L1, mm	0.170	0.141	NS	−0.224	0.091	*
Crown ratio	3.435	2.089	NS	4.886	1.725	*
Root angulation at T2, °	−0.037	0.040	NS	−0.020	0.043	NS
Right CEJ–left CEJ distance at T2, mm	0.528	0.514	NS	0.853	0.549	NS
Distance from ICP to ABC at T1, mm	0.545	0.301	NS	0.883	0.302	*
Distance from ICP to ABC at T2, mm	0.610	0.284	*	1.442	0.354	**
Δ Distance from ICP to ABC, mm	−0.179	0.353	NS	−0.741	0.314	*
Crowding
A-P overlapped distance, mm	0.702	0.334	*	0.008	0.380	NS
Transverse overlapped distance, mm	0.004	0.248	NS	0.591	0.332	NS
Rotation, °	0.018	0.035	NS	−0.021	0.036	NS

^aB indicates beta coefficient; SE, standard error; NS, not significant; U1, maxillary incisor; L1, mandibular incisor; SN, Sella-Nasion; IMPA, incisor mandibular plane angle; T1, before treatment; T2, after treatment; Δ, T2-T1; CEJ, cementoenamel junction; ICP, inteproximal contact point; ABC, alveolar bone crest; A-P, antero-posterior.

^*P < .05.