Читать книгу Vertical 2: The Next Level of Hard and Soft Tissue Augmentation - Istvan Urban - Страница 26

Table 2-2 and Figure 2-2a and b document ridge height changes post-VBA.

The mean baseline vertical deficiency was 5.5 ± 2.6 mm. The absolute gain in vertical dimension from VBA was 5.2 ± 2.4 mm, corresponding to a mean relative height gain of 96.5 ± 13.9%; 89.2% of the sites presented complete regeneration, i.e. elimination of vertical deficiency. Each 1-month addition to the healing time increased the relative gain by 1.34%.

Table 2-1 Demographic and clinical characteristics of the studied cohort

		N (%) / mean ± SD
Patient Level	N patients	57
Age (years)	51.9 ± 11.8
Gender
Male	21 (36.8)
Female	36 (63.2)
Smoker
No	55 (96.5)
Yes	2 (3.5)
N sites on surgery
1	49 (86.0)
2	8 (14.0)
Site level	N sites	65
Site
Maxillary anterior	12 (18.5)
Maxillary right posterior	11 (16.9)
Maxillary left posterior	6 (9.2)
Mandibular anterior	4 (6.2)
Mandibular right posterior	15 (23.1)
Mandibular left posterior	17 (26.2)
N implants
0	3 (4.6)
1	7 (10.8)
2	34 (52.3)
3	20 (30.8)
4	1 (1.5)
Healing time (months)	9.7 ± 3.3
Complications
None	63 (97)
Exposure	1 (1.5)
Infection	1 (1.5)
Defect type
Vertical	65 (100)
Defect size (mm)	5.5 ± 2.6
	N missing teeth	3.2 ± 1.2
Maxilla	3.1 ± 1.5
Mandible	3.2 ± 0.9
N: number (of patients or sites as a percentage); SD: standard deviation

Table 2-2 Changes in the dimensional parameters of the defects after bone augmentation

Vertical

5.5 ± 2.6

5.2 ± 2.4

96.5 ± 13.9

89.2

Table 2-3 Multiple linear regression analysis on the relative vertical gain (%) controlling for defect size, arch, healing time, and age

	Regression coefficient	95% CI	P value
Defect size			< 0.001***
< 5 mm (reference)	0.00
5–8 mm	–5.97	-11.8 to 0.13	0.045*
> 8 mm	–11.9	-17.8 to 5.89	< 0.001***
Arch
Maxilla (reference)	0.00
Mandible	–2.98	-8.01 to 2.05	0.246
Healing time	1.34	0.08 to 2.60	0.037*
Age	0.08	-0.05 to 0.21	0.207
CI: confidence interval *P < 0.5 ***P < 0.001