| | Authors, year | Study design | Follow-up (mo) | Country | Teeth | Sample | Mean age (range of years) | Number of implants evaluated |
| | Migliorati et al., 2015 [17] | RCT | 24 | Genova, Italy | 14 to 24 | 48 (25 f/23 m) | 47,5 (22 to 70) | 47 | | Bianchi and Sanfilippo, 2004 [6] | RCT | 72 to 216 | Milano, Italy | 17 to 27 and 37 to 47 | 116 (58 f/58 m) | 45,4 (19 to 73) | 116 | | Yoshino et al., 2014 [18] | RCT | 12 | Loma Linda, CA | 14 to 24 | 20 (13 f/7 m) | 52,6 (27 to 87) | 20 | | Rungcharassaeng et al., 2012 [34] | PCT | 17 | Loma Linda, CA | 13 to 23 | 24 (11 f/13 m) | 45,4 (23 to 87) | 23 | | Cornelini et al., 2008 [35] | PCT | 12 | Rimini, Italy | 15 to 25 and 35 to 45 | 34 (15 f/19 m) | 43 (21 to 62) | 34 | | Lee et al., 2012 [36] | CS | 24 | Seoul, Korea | 11 and 21 | 10 (8 f/2 m) | 46,4 (22 to 56) | 11 | | Kan et al., 2009 [37] | CS | 12 to 48 | Loma Linda, CA | 13 to 23 | 20 (14 f/6 m) | 52,3 (18 to 71) | 20 | | Kan et al., 2007 [38] | CS | 12 | Loma Linda, CA | 13 to 23 | 23 (undefined) | 39,5 (25 to 63) | 23 | | Nemcovsky et al., 2000 [26] | CS | 6 to 8 | Tel Aviv, Israel | 15 to 25 | 24 (undefined) | 45,5 (29 to 65) | 26 | | Tsuda et al., 2011 [39] | CS | 12 | Loma Linda, CA | 14 to 24 | 10 (6 f/4 m) | 48 (35 to 70) | 10 | | Chung et al., 2011 [40] | CS | 12 | Loma Linda, CA | 15 to 25 and 35 and 45 | 10 (4 f/6 m) | 52,1 (22,7 to 67,1) | 10 | | Covani et al., 2007 [20] | CS | 12 | Lucca, Italy | 15 to 25 and 35 to 45 | 10 (5 f/5 m) | (42 to 55) | 10 | | Jyothi et al., 2013 [21] | CS | 12 | Karnataka, India | 15 to 25 and 35 to 45 | 10 (5 f/5 m) | 25,3 | 10 | | Nemcovsky et al., 1999 [25] | CS | 6 to 9 | Tel Aviv, Israel | 15 to 25 | 29 (undefined) | 44,5 | 33 |
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