Orthodontic retention--three methods trialed.
Evid Based Dent
; 17(1): 29-30, 2016 Mar.
Article
in En
| MEDLINE
| ID: mdl-27012577
ABSTRACT
DESIGN:
Single centre randomised controlled trial. INTERVENTION Patients treated by a single orthodontist were randomised to one of three retentionmethods:
removable vacuum-formed retainer (VFR) covering the palate and the maxillary anterior teeth from canine-to-canine and bonded canine-to-canine retainer in the lower arch (group V-CTC); maxillary VFR combined with stripping of the lower anterior teeth (group V-S); prefabricated positioner covering all erupted teeth in the maxilla and the mandible (group P). All retention appliances were provided within one hour of debonding. OUTCOMEMEASURE:
Dental study casts were taken before treatment, at appliance removal and five years or more out of retention. Little's irregularity index, intercanine and intermolar width, arch length and overbite/overjet were recorded.RESULTS:
Twenty-five patients were randomised to each group with 69 completing the two-year retention period (24 in V-CTC group; 23 in V-S group; 22 in P group). Forty-nine patients were available five years post retention (16 in V-CTC group; 17 in V-S group; 16 in P group). No significant differences were found between the groups.CONCLUSIONS:
After five years or more out of retention, the three retention methods had achieved equally favourable clinical results. Thus a maxillary VFR combined with a bonded canine-to-canine retainer in the mandible, a maxillary VFR combined with stripping of the mandibular anterior teeth and a prefabricated positioner can all be recommended.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Orthodontics, Corrective
/
Orthodontic Retainers
Type of study:
Clinical_trials
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
Evid Based Dent
Journal subject:
ODONTOLOGIA
Year:
2016
Document type:
Article
Affiliation country: