Two Years after Loading Performance of Implant-Supported Overdenture with Metal Bar and Low-Profile Attachments: A Prospective Case Series Multicenter Clinical Study

Table 2

Distribution of implants failures and complications between subgroups.

	Implants	Prostheses	Failures	Complications
Brachycephalic	16	4
Dolichocephalic	12	3
Mesocephalic	149	36	2	3
Maxilla	110	26	2	3
Mandible	67	17