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KMID : 0361920100400050325
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Korean Journal of Orthodontics
2010 Volume.40 No. 5 p.325 ~ p.333
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Discomfort caused by the circumferential comfortable retainer (CCR) as a removable maxillary retainer
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Choi Jin-Hugh
Moon Cheol-Hyun
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Abstract
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Objective: The aim of this study was to illustrate the circumferential comfortable retainer (CCR) as a removable
maxillary retainer with good potential patient compliance and to evaluate the discomfort of the retainers including
distorted speech, gagging sensation and appliance discomfort.
Methods: Sixty-six orthodontic patients (male, 23; female, 43; mean age, 23.42 ± 10.19 years) who received orthodontic treatment with fixed orthodontic appliances were randomly assigned to two groups after debonding, a conventional wraparound retainer (CWR) group that fully covers the palate with an acrylic plate and a highly polished surface, and a circumferential comfortable retainer (CCR) group which has a horseshoe shaped base plate with three folds on the anterior region. A questionnaire that had a visual analog scale (VAS) which consists of a 100-mm horizontal line with 2 end-points labeled “no discomfort” on the left and “worst discomfort” on the right, with regard to distorted speech, gagging sensation and discomfort, was administered to patients after 4 weeks of retainer wear. The Mann-Whitney test was used to test the hypothesis that there was no difference between the two retainers.
Results: Comparing distorted speech and discomfort, the CCR group significantly had lower values than the CWR group (p ＜ 0.05). Comparing gagging sensation, the CCR group had lower values than the CWR group but there were no statistically significant differences between groups (p = 0.146).
Conclusions: In conclusion, the results suggest that the circumferential comfortable retainer (CCR) might facilitate patient compliance and thereby improve the maintenance of the fixed orthodontic treatment outcome.
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KEYWORD
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Removable retainer, Distorted speech, Discomfort, Patient compliance
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