Relevance of Variations in the Opposing Dentition for the Functionality of Fixed and Removable Partial Dentures: A Systematic Review

Table 2

Description of patient population.

Study	Gender m/f	Mean age (range)	Number of patients screened	Number of patients with intervention	Patients evaluated	Drop-outs; 𝑛 (%)
Balshi et al., 1996 [13]	15/29^a	n/a (n/a)	45	45	45	0
Isidor and Budtz-Jørgensen, 1990 [29]	25/28	69.0 (61–83)	53	53	43	10 (23%)
Carlson and Yontchev, 1996 [14]	11/1	53 (33–74)	12	12	8	4 (33.3%)
Esquivel-Upshaw et al., 2008 [15]	3/18	n/a (30–62)	21	21	21	0
Frank et al., 1998 [22]	402/398	59 (n/a)	800	410	410	—^b
Hummel et al., 2002 [23]	n/a	n/a (17–n/a)	17884	1306	1303	—^b
Lassila et al., 1985 [24]	47/42	62.5 (n/a)	89	89	89	—^b
Liedberg et al., 2005 [25]	483/0	68 (67-68)	483	483	474	—^b
Ow et al., 1997 [26]	312/579	65.9 (55–91)	891	891	871	—^b
Randow et al., 1986 [19]	96/145^c	51.6 (n/a)^c	281	267	241	26 (11%)
Romeo et al., 2003 [16]	16/22	51 (21–71)	38	38	38	0
Studer et al., 1998 [20]	46/66	57.7 (28–84)	155	155	112	43 (38%)
Tuominen et al., 1989 [27]	2568/2460	51.9 (30–n/a)	5028	5028	5028	—^b
Ueda et al., 1993 [17]	11/11	54.4 (34–74)	22	22	22	0
Vallittu et al., 1993 [28]	n/a	n/a (n/a)	—	266	266	—^b
Wayler et al., 1984 [18]	1221/0	50.5 (25–79)	1221	1133	1133	88 (8%)
Yli-Urpo et al., 1985 [21]	62/60	n/a (n/a)	—	122	122	0

^aNo information on the gender of 3 patients.
^bThere were no drop-outs with one-time data collection, though cross-sectional studies contain no information on response rates.
^cData applies to evaluated patients; all other apply to included patients.
f: female, m: male, n: number of patients, n/a: not available.