CBCT analysis of the tissue thickness at immediate implant placement with contour augmentation in the maxillary anterior zone: a 1-year prospective clinical study

International Journal of Implant Dentistry

Table 2 Horizontal facial hard and soft tissues and mucosal contour changes following immediate implant placement

Measurement		Preoperative		1 year after prosthesis connection		P-value^*
Measurement		Median (Min; Max) mm	Mean (SD) mm	Median (Min; Max) mm	Mean (SD) mm	P-value^*
Test group (n=10)
BW	PL0	2.85 (0.6; 3.0)	2.71 (0.42)	1.90 (1.3; 3.3)	2.21 (0.57)	0.019
BW	PL2	2.40 (1.6; 3.1)	2.36 (0.42)	2.10 (1.5; 3.4)	2.26 (0.57)	0.474
GW	PL0	1.25 (0.8; 1.5)	1.19 (0.21)	2.60 (2.0; 3.2)	2.56 (0.30)	0.005
GW	PL2	1.35 (0.9; 1.7)	1.37 (0.26)	2.65 (2.1; 2.8)	2.57 (0.24)	0.005
TW	PL0	3.85 (3.1; 4.8)	3.90 (0.46)	4.80 (3.6; 5.7)	4.77 (0.61)	0.005
TW	PL2	4.00 (2.6; 4.3)	3.73 (0.57)	4.80 (3.6; 6.0)	4.83 (0.68)	0.005
Control group (n=10)
BW	PL0	2.30 (1.2; 3.9)	2.28 (0.76)	1.75 (1.2; 2.7)	1.81 (0.40)	0.021
BW	PL2	2.00 (0.9; 3.9)	2.03 (0.75)	2.00 (1.0; 3.0)	1.97 (0.53)	0.720
GW	PL0	1.25 (0.9; 2.3)	1.43 (0.45)	1.35 (0.9; 2.2)	1.44 (0.40)	0.887
GW	PL2	1.50 (1.1; 1.9)	1.53 (0.26)	1.60 (1.0; 2.1)	1.56 (0.34)	0.524
TW	PL0	4.05 (2.1; 5.1)	3.71 (0.96)	3.25 (2.1; 4.3)	3.25 (0.68)	0.049
TW	PL2	3.65 (2.3; 5.4)	3.56 (0.85)	3.50 (2.1; 4.7)	3.53 (0.82)	0.905

^*Wilcoxon signed-rank test; a significance level of 0.05 was used.
PL0 Implant platform level, PL2 2 mm Apical to the implant platform level, BW The horizontal distance from the implant surface to the facial bone surface, GW The horizontal width of the soft tissue, TW The sum of BW and GW