Table 2: Results of the linear mixed effects regression analysis.

		Dependent Variables
Independent Variables	Intercept		Age		Smoking		Central Incisor		Lenght		Width		Central Incisor x Lenght		Central Incisor x Width
	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value
dL central	-0.153	0.937	-0.012	0.778	1.089	0.003	-2.880	0.183	-0.013	0.930	-0.094	0.644	0,205	0.201	0,122	0.640
dL overall	-0.371	0.845	-0.006	0.873	0.904	0.012	-2.653	0.215	-0.016	0.910	-0.116	0.561	0,185	0.243	0,124	0.628
da* incisal	-0.729	0.624	-0.032	0.231	0.159	0.501	-2.885	0.134	0.300	0.010	-0.431	0.013	-0,089	0.0532	0,473	0.038
da* overall	-0.933	0.289	-0.017	0.274	0.112	0.412	-2.191	0.058	0.180	0.009	-0.220	0.032	-0,03	0.724	0,316	0.021
dE incisal	6.029	0.028	-0.027	0.558	-0.371	0.360	2.622	0.485	-0.293	0.176	0.311	0.346	-0,097	0.730	-0,199	0.654