One-year comparative assessment of retention of arch width increases between modified vacuum-formed and Hawley retainers
| Autor: | Lew Xian, Sindhu Sinnasamy, Rohaya Megat Abdul Wahab, Yeoh Chiew Kit, Asma Ashari, Malathi Deva Tata, Elavarasi Kuppusamy, Alizae Marny Fadzlin Syed Mohamed |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Angle Orthod |
| ISSN: | 1945-7103 0003-3219 |
| DOI: | 10.2319/050921-363.1 |
| Popis: | Objectives To compare the clinical effectiveness of Hawley retainers (HRs) and modified vacuum-formed retainers (mVFRs) with palatal coverage in maintaining transverse expansion during a 12-month retention period. Materials and Methods Data were collected from postorthodontic treatment patients who met the inclusion criteria. A total of 35 patients were randomly allocated using a centralized randomization technique into either mVFR (n = 18) or HR group (n = 17). The outcome assessor and data analyst were blinded to the retention method. Dental casts of patients were evaluated at debond, 3 months, 6 months, and 12 months of retention. Intercanine width (ICW), interpremolar width (IPMW), interfirst molar mesiobuccal cusp width 1 (IFMW1), and interfirst molar distobuccal cusp width 2 (IFMW2) were compared between groups over time using mixed analysis of variance. Results No statistically significant differences were found between the two groups for ICW (P = .76), IPMW (P = .63), IFMW1 (P = .16), and IFMW2 (P = .40) during the 12-month retention period. Conclusions The null hypothesis could not be rejected. HR and mVFR had similar clinical effectiveness in the retention of transverse expansion cases during a 12-month retention period. |
| Databáze: | OpenAIRE |
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