| Author, year |
Country |
Study design |
Number
of patients (n) |
With
drawals
-
dropouts |
Result |
Comments |
Intervention
Fixed retainer |
Control
No retainer |
| Levin, [16] |
Israel |
CT |
n= 92
Group1: n= 48
Group 2: n= 72 |
n=0 |
Group 1
Lingual: 53.9%
|
Group 2
Lingual: 37.8%
p<0.012 |
Bleeding on probing
Group 1= One or two fixed retainers
Group 2= No retainer |
| Rody, [15] |
Canada |
CT |
n=31
Group 1: n= 10
(Group 2: n= 11)
Group 3: n= 10 |
? a |
Group 1
Incisor:
30% (sd 48.3)
Premolar:
20% (sd 42.16)
|
Group 3
Incisor: 20% (sd 42.16)
ns.
Premolar:
20% (sd 42.16)
ns. |
Bleeding on probing
Group 1= 3-3 fixed lower retainer.
Group 2= Removable lower retainer.
Group 3= No retainer.
|
| Artun, [14] |
Norway |
CT |
n=108
Group 1: n= 31
Group 2: n= 18
Group 3: n= 14
(Group 4: n= 20)
Group 5: n= 25 |
? a |
Groups 1 and 2
GI Lingual:
Mean: 1.06 (sd 0.13)
GI Interproximal:
Mean: 1.31 (sd 0.28)
NBP Interproximal:
Mean: 0.63 (sd 0.27) |
Group 5
GI Lingual:
Mean: 1.13 (sd 0.15)
p<0.05
GI Interproximal:
Mean: 1.35 (sd 0.27)
ns.
NBP Interproximal:
Mean: 0.68 (sd 0.23)
ns.
|
Gingival index (GI)
Non bleeding papilla (NBP)
Group 1= Mandibular cuspid retainer .032 spiral wire.
Group 2= Mandibular cuspid retainer .032 plain wire.
Group 3= Maxillary .0195 flexible spiral wire retainer.
Group 4= Maxillary retainer plate.
Group 5= No retainer.
Cuspid retainer = bonded only to cuspids
3-3- retainer = bonded to each tooth.
|
