Table 4 Survival and failure rates of fixed and removable retainers
From: The effects of fixed and removable orthodontic retainers: a systematic review
Study | Intervention | Survival rate | Failure rate |
|---|---|---|---|
Al-Nimri et al. 2009 [25] | - 0.036″ round stainless steel fixed retainer (canines only) | 4/31 (13 %) | |
- 0.015″ multistrand fixed retainer | 9/31 (29 %) | ||
Bazargani et al. 2012 [14] | - 0.0195″ multistrand fixed retainer with two-step bonded resin adhesive | 1/25 (4 %) | |
- 0.0195″ multistrand fixed retainer with non-resin adhesive | 7/26 (27 %) | ||
Tynelius et al. 2014 [13] | - Vacuum-formed retainer in the maxilla and 0.7-mm spring hard wire fixed retainer in the mandible (canines only) | 2/24 (8.3 %) vacuum-formed retainer, 15/24 (62.5 %) fixed retainer | |
- Vacuum-formed retainer in the maxilla and interproximal enamel reduction in the mandibular anterior teeth | 3/25 (12 %) | ||
- Prefabricated positioner | 0/25 (0 %) | ||
Sfondrini et al. 2014 [17] | - 0.5-mm silanized-treated glass fiber-reinforced composite resin fixed retainer | 27/240 bonded teeth (11.25 %) | |
- 0.0175″ multistrand stainless steel fixed retainer | 50/282 bonded teeth (17.73 %) | ||
Ardeshna et al. 2011 [26] | - 0.53- or 1.02-mm fiber-reinforced thermoplastic fixed retainer with polyethylene terephthalate glycol matrix resin | Median, 2.97 months | 22/23 (95.6 %) |
- 0.53- or 1.02-mm fiber-reinforced thermoplastic fixed retainer with polycarbonate matrix resin | Median, 11.37 months | 32/53 (60.3 %) | |
Salehi et al. 2013 [18] | - Polyethylene woven ribbon fixed retainer | Maxilla: mean 13.96 ± 4.53 months Mandible: mean 14.26 ± 4.70 months | 34/68 in the maxilla (50 %), 29/68 in the mandible (42.6 %) |
- 0.0175″ multistrand stainless steel fixed retainer | Maxilla: mean 15.34 ± 4.04 months Mandible: mean 15.61 ± 3.61 months | 27/74 in the maxilla (36.5 %), 28/74 in the mandible (37.8 %) | |
Hichens et al. 2007 [12] | - Hawley retainer | 40/344 (11.6 %) | |
- Vacuum-formed retainer | 20/366 (17 %) | ||
Bovali et al. 2014 [19] | - Direct bonding of 0.0215″ multistrand stainless steel fixed retainer | 7/29 (24.1 %) | |
- Indirect bonding of 0.0215″ multistrand stainless steel fixed retainer | 10/31 (32.2 %) | ||
Pandis et al. 2013 [20] | - 0.022″ multistrand stainless steel fixed retainer bonded with chemical-cured composite | 47/110 (42.7 %) | |
- 0.022″ multistrand stainless steel fixed retainer bonded with light-cured composite | 55/110 (50 %) | ||
Liu et al. 2010 [23] | - 0.75-mm fiber-reinforced composite fixed retainer | 0/30 (0 %) | |
- 0.9-mm multistrand stainless steel fixed retainer | 0/30 (0 %) | ||
Taner et al. 2012 [27] | - Direct bonding 0.016″ × 0.022″ multistrand stainless steel dead soft wire fixed retainer | 15/32 (46.8 %) | |
- Indirect bonding 0.016″ × 0.022″ multistrand stainless steel dead soft wire fixed retainer | 10/34 (29.4 %) | ||
Artun et al. 1997 [28] | - 0.032″ plain fixed retainer (canines only) | 1/11 (9.1 %) | |
- 0.032″ spiral fixed retainer (canines only) | 4/13 (30.7 %) | ||
- 0.0205″ spiral wire fixed retainer | 3/11 (27.27 %) | ||
- Removable retainer | 2/14 (14.28 %) | ||
Scribante et al. 2011 [24] | - 0.0175″ multistrand stainless steel fixed retainer | 23/102 bonded teeth (23 %) | |
- Polyethylene fiber-reinforced resin composite fixed retainer | 13/90 bonded teeth (14 %) | ||
O’Rouke et al. 2016 [22] | - Vacuum-formed retainer | ||
- 0.0175″ stainless steel coaxial fixed retainer | 3/42 (7.14 %) |