Table 9.

Implant failure case in the mandible

Case	Age	Sex	Smoking	Systemic disease	Surgical procedure (number of implants)	Type of implant	Diameter (mm)	Length (mm)	Primary stability (N cm)	Direction	Time to implant failure (month)
1	63	M	+	Stomach cancer	All-on-four (4)	Nobel speedy groovy	4.0	18	45	Tilted	74
2	58	M	+	−	All-on-four (4)	Nobel speedy groovy	4.0	15	35	Tilted	1
3	67	F	−	−	All-on-four + 2 (6)	Nobel speedy groovy	4.0	18	50 ≤	Tilted	140
						Nobel speedy groovy	4.0	7	40	Straight	140
4	55	M	+	Hepatic dysfunction	All-on-four (4)	Nobel speedy groovy	4.0	15	50 ≤	Straight	7
5	38	M	+	DM	All-on-four (4)	Nobel speedy groovy	4.0	15	50 ≤	Tilted	9
6	47	M	+	−	All-on-four (4)	Nobel speedy groovy	4.0	18	50 ≤	Tilted	28