Table 1 Measures of central dispersion for the measured GT (Gingival Thickness) by the two methods at 2- and 4-mm distances from the FGM (Free Gingival Margin)
Group analysis | Ultrasonography 2 mm | Transgingival probing 2 mm | Ultrasonography 4 mm | Transgingival probing 4 mm | Diff 2 mm | Diff 4 mm |
|---|---|---|---|---|---|---|
Mean | 1.3285 | 1.4349 | 1.4528 | 1.4177 | 0.2097 | 0.2301 |
Number | 680 | 680 | 680 | 680 | 680 | 680 |
Standard deviation | 0.23528 | 0.25966 | 0.28262 | 0.26035 | 0.15530 | 0.17505 |
Minimum | 0.70 | 0.77 | 0.70 | 0.76 | 0.00 | 0.00 |
Maximum | 2.20 | 2.23 | 2.50 | 2.38 | 1.10 | 1.20 |