Table 3: Clinical Characteristics of Gingiva and CW/CL-Ratios (Mean and Standard Deviation) in 3 Classifications

Tooth GT (mm) WG (mm) CW/CL
13/23
Narrow (n=48) 0.85±0.20 4.58±0.83 0.67±0.07
Square (n=26) 1.02±0.22 5.19±0.99 0.80±0.09
Compound (n=38) 1.2±0.27 6.49±0.88 0.75±0.08
p <0.0001 <0.0001 <0.0001
12/22
Narrow (n=48) 0.81±0.17 4.81±0.99 0.62±0.06
Square (n=26) 0.90±0.16 5.79±0.76 0.77±0.08
Compound (n=38) 1.11±0.21 6.88±0.99 0.70±0.07
p <0.0001 <0.0001 <0.0001
11/21
Narrow (n=48) 1.04±0.26 5.25±0.98 0.70±0.06
Square (n=26) 1.15±0.24 5.77±0.78 0.79±0.07
Compound (n=38) 1.51±0.32 6.99±0.87 0.75±0.06
p <0.0001 <0.0001 <0.0001

Note: Cluster analysis based on mean gingival thickness (GT), width of keratinized gingiva (WG) and ratio of crown width to crown length (CW/CL) of upper canines, lateral incisors and central incisors.