Double Guided Surgery in All-on-4^® Concept: When Ostectomy Is Needed

Table 1

Accuracy: angular and distance errors.

Patient	Position of implant	Angular error (°)	Shoulder error (mm)	Apical error (mm)
1	#45	0.65	0.1	0
	#42	0	0.1	0.5
	#32	3.37	1.37	1.09
	#35	4.19	0.91	0.72
2	#15	0.67	0.59	0.75
	#12	3.40	0.45	0.66
	#22	4.11	1.33	0.82
	#25	0.83	1.77	0.20
3	#45	0	0.75	0.1
	#42	2.21	0.47	0.42
	#32	9.49	0.36	1.82
	#35	2.99	0.40	0.89
4	#45	5.56	1.22	0.27
	#42	1.09	0.39	0 58
	#32	0	0	0
	#35	0.79	0.80	0.42
5	#45	2.03	1.01	0.32
	#42	1.01	0.30	0.65
	#32	3	0.81	0.87
	#35	1.05	0.93	0.41
6	#45	0.80	0.23	0.29
	#42	2.03	1.76	1.05
	#32	1.10	1.14	0.58
	#35	3.01	0.89	0.27
7	#45	3.21	1.79	1.20
	#42	0.65	0.40	0.46
	#32	2.20	0.95	0.62
	#35	0.9	0.32	0.31
Mean ± standard deviation	—	2.155 ± 2.03	0.763 ± 0.55	0.570 ± 0.40