Table 1 Comparison of variables between the grafted and non-grafted groups

Sex, n (%)

0.44^a

 Male

43 (58.11)

33 (51.56)

 Female

31 (41.89)

31 (48.44)

Age (years), median (IQR)

48 (41, 52.25)

48.50 (43.25, 54.00)

0.36^b

Tooth position, n (%)

0.47^a

 Premolar

19 (17.92)

18 (22.22)

 Molar

87 (82.08)

63 (77.78)

Implant system, n (%)

0.75^a

 Straumann AG

87 (82.08)

65 (80.25)

 Nobel active

19 (17.92)

16 (19.75)

Implant diameter (mm), n (%)

0.55^a

   ≤ 4.1

75 (70.75)

54 (66.67)

   > 4.1

31 (29.25)

27 (33.33)

Implant length (mm), n (%)

0.11^a

   ≤ 8

23 (21.70)

26 (32.10)

   > 8

83 (78.30)

55 (67.90)

SW (mm), mean ± SD

13.42 ± 2.99

14.07 ± 3.68

0.20^c

BD (HU), median (IQR)

550.04 (476.48, 635.08)

563.14 (457.40, 663.98)

0.66^b

SMT (mm), Median (IQR)

1.84 (1.72, 2.10)

1.95 (1.72, 2.49)

0.26^b

RBH (mm), mean ± SD

5.26 ± 1.73

6.47 ± 1.02

0.00^c