Table 2 Summary of the selected studies and quality assessement
Author | Year | Study type | Case selection bias (homogeneity and confounders) | Performance bias (fidelity to protocol) | Attrition bias (loss of participants) | Detection bias (reliable measures) | Reporting bias (selective reporting or conflicting interests) | Summary assessments |
|---|---|---|---|---|---|---|---|---|
Risk of bias | ||||||||
Implant studies | ||||||||
Ledermann [40] | 1993 | Retrospect | M | M | L | M | H | M |
Kearns [41] | 1999 | ProspObs | L | L | L | L | M | L |
Thilander [3] | 2001 | ProspObs | L | L | L | L | L | L |
Guckes [42] | 2002 | ProspObs | M | L | L | L | M | L |
Sweeney [43] | 2005 | Retrospect | L | L | L | L | M | L |
Finnema [27] | 2005 | Retrospect | L | L | M | L | M | L |
Poggio [44] | 2005 | Retrospect | M | M | M | M | M | M |
Zarone [45] | 2006 | ProspObs | L | L | L | L | L | L |
Becelli [46] | 2007 | Retrospect | L | L | L | L | M | L |
Bergendal [20] | 2008 | Survey | M | L | H | M | M | M |
Dueled [26] | 2008 | Retrospect | M | L | M | L | L | L |
Krieger [25] | 2009 | Retrospect | M | L | L | M | M | L |
Degidi [47] | 2009 | RCT | L | L | L | L | L | L |
Creton [1] | 2010 | Retrospect | L | L | M | L | M | L |
2010 | Retrospect | H | M | M | L | L | M | |
Nissan [48] | 2011 | Unclear | H | L | M | M | M | M |
Heuberer [38] | 2012 | Retrospect | L | L | L | L | M | L |
Hosseini [49] | 2013 | ProspObs | L | L | L | L | L | L |
Zou [50] | 2014 | Retrospect | M | L | L | L | L | L |
Autotransplants | 14/19 L 5/19 M | |||||||
Kristersson [51] | 1991 | Retrospect | M | L | L | L | L | L |
Kugelberg [52] | 1994 | ProspObs | M | L | L | L | L | L |
Marcusson [53] | 1996 | ProspObs | M | L | L | L | L | L |
Josefsson [54] | 1999 | Retrospect | M | L | M | L | L | L |
Czochrowska [55] | 2002 | Retrospect | H | L | M | L | L | M |
Bauss [23] | 2004 | prospCT | M | L | M | M | M | M |
Jonsson [56] | 2004 | ProspObs | M | L | L | L | M | L |
Tanaka [57] | 2007 | Retrospect | M | L | M | L | M | M |
Mensink [58] | 2010 | Retrospect | M | L | L | L | M | L |
Kvint [59] | 2010 | Retrospect | M | L | L | L | L | L |
Bokelund [24] | 2013 | Retrospect | L | L | L | L | L | L |
Deciduous teeth | 8/11 L 3/11 M | |||||||
Bjerklin [60] | 2000 | ProspObs | M | L | M | L | L | L |
Ith-Hansen [61] | 2000 | ProspObs | L | L | L | L | L | L |
Sletten [62] | 2003 | Retrospect | L | L | M | L | M | L |
Bjerklin [63] | 2008 | ProspObs | M | L | M | L | L | L |
Kjaer [17] | 2008 | Retrospect | L | L | M | L | L | L |
Hvaring [16] | 2013 | Cross section | L | L | L | L | L | L |
Convent. Prosth. | 2/6 L 4/6 M | |||||||
Hobkirk [64] | 1989 | Retrospect | H | M | M | L | M | M |
Pröbster [65] | 1997 | Retrospect | M | L | M | L | M | M |
Garnett [66] | 2005 | Retrospect | M | L | M | L | M | M |
Dueled [26] | 2008 | Retrospect | M | L | M | L | L | L |
Krieger [25] | 2009 | Retrospect | M | L | L | M | M | M |
Spinas [67] | 2013 | ProspObs | L | L | L | L | M | L |
2/6 L 4/6 M | ||||||||
Total | n = 42 | 25 retrosp 14 prosp | 30/42 L12/42 M |