Table 2. Spearman correlation values between buccal bone thickness and soft tissue thickness at each level according to tooth type.

Tooth type	Level	Spearman correlation coefficient (ρ)	P value
Central incisor	G1A1	0.03	0.890
	G2A2	0.17	0.483
	G3A3	0.21	0.363
	G4A4	0.12	0.603
	G5A5	0.06	0.793
Lateral incisor	G1A1	0.02	0.927
	G2A2	−0.27	0.257
	G3A3	−0.16	0.494
	G4A4	−0.12	0.617
	G5A5	−0.22	0.341
Canine	G1A1	−0.09	0.710
	G2A2	−0.12	0.628
	G3A3	−0.14	0.553
	G4A4	0.08	0.747
	G5A5	−0.16	0.500

G0, gingival thickness at the alveolar crest line; G1–5, gingival thickness 1–5 mm inferior to the alveolar crest; A1–5, alveolar bone thickness 1–5 mm inferior to the alveolar crest.