From: Allogeneic versus autogenous shell technique augmentation procedures: a prospective-observational clinical trial comparing surgical time and complication rates
Materials
Number
Percentage
Allogenic shell
60
51.3
Autologous shell
52
44.4
Allogenic and autologous shell
5
4.3
Shells per patient
1
18
15.4
2
51
43.6
3
29
24.8
> 3
19
16.2
Harvesting site
Same site
37
31.6
Opposite site
13
11.1