Table 1. Demographic characteristics of subjects and distribution of implant placement.

Groups		SCRP		BSRP
Number of subjects (n)		32		32
Age		58.67 ± 9.93		59.25 ± 8.58
Sex	Male	11		20
	Female	21		12
Implant location		Maxilla	Mandible	Maxilla	Mandible
	Anterior	1	1	1	-
	Implant location Premolars	5	2	8	2
	Molars	7	16	11	10
	Total (n)	13	19	20	12

SCRP, screw- and cement-retained prosthesis; BSRP, ball- and spring-retained prosthesis.