Alyassiri, Hassanin Abdulkhabeer (2021) Tooth Alignment, Coating Loss, Colour Change And Patient Perception Of Aesthetic Archwires: A Randomised Controlled Trial. Masters thesis, Universiti Sains Malaysia.
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Abstract
Aesthetic archwires help improve aesthetics of patients during orthodontic treatment. The aims of this study of randomised controlled trial (RCT) were to compare and evaluate the percentage of tooth alignment, coating loss, colour change, and patient perception of three different aesthetic superelastic nickel-titanium (SE NiTi) archwires coated with tooth-coloured polymers over eight weeks of intraoral use. Methods: Multi-centre, double-blind, randomised controlled trial was done at three centres: (1) Orthodontic Specialist Clinic, Advanced Medical & Dental Institute, Universiti Sains Malaysia (USM), (2) Orthodontic Specialist Clinic, School of Dental Sciences, USM, and (3) Desa Murni Dental Clinic, Penang. A total of 134 participants requiring upper and lower fixed appliances were recruited for this RCT. All participants were randomly allocated to one of four upper and lower archwire interventions: (1) 0.014” Orthocare Euroform® (2) 0.014” RMO FLi®, (3) 0.014” G&H, and (4) 0.014” uncoated. These three aesthetic archwires differ from one another in terms of coating materials and thickness. The archwires were ligated and remained in-situ for eight weeks. After removal of the archwires, the tooth alignment, coating loss, colour change, and patient perception were assessed using Little's Irregularity Index, Autodesk® AutoCAD® software, Adobe® Photoshop®, and Oral Aesthetic Subjective Impact Scale (OASIS) questionnaire, respectively. Results: The analysis shows statistically significant differences between the four treatmen archwires for tooth alignment (p = 0.014), with RMO group showed the highest percentage (77.1%) and G&H group showed the lowest (63.7%). Orthocare archwires have the largest mean of colour change (11.11) and G&H the lowest value (9.01). In coating loss comparison, Orthocare group had the highest mean percentage of coating loss (33.4%) and RMO had the lowest (27.8%) despite no statistically significant difference (p = 0.137). Orthocare group had the highest percentage of positive perception (80.6%), whereas the RMO group showed the highest percentage of negative perception (33.3%). Conclusion: After the analysis it has been found out that there is significant tooth alignment, colour change, coating loss, and patient perception after the clinical use of aligning aesthetic archwires. The partially coated PTFE RMO group performed better than the other groups for both alignment reduction and coating loss, but it is the least acceptable to patients. Whilst the fully coated PTFE Orthocare group had the highest acceptable, but in same time had the highest mean percentage of coating loss and colour change over the eight weeks of clinical use. The lowest alignment reductions after treatment were for fully coating epoxy G&H aesthetic archwires group and the lowest mean value of colour change.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | R Medicine |
| Divisions: | Institut Perubatan & Pergigian Termaju (Advanced Medical & Dental Institute (AMDI)) > Thesis |
| Depositing User: | NOR HASHIMY BIN ABDULLAH |
| Date Deposited: | 05 May 2026 04:13 |
| Last Modified: | 05 May 2026 04:13 |
| URI: | http://eprints.usm.my/id/eprint/64075 |
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