A prospective cohort study assessing the appearance of retrieved aesthetic orthodontic archwires.

Collier, S; Pandis, Nikolaos; Johal, A; Qureshi, U; Sharma, P K; Fleming, P S (2018). A prospective cohort study assessing the appearance of retrieved aesthetic orthodontic archwires. Orthodontics & Craniofacial Research, 21(1), pp. 27-32. Wiley 10.1111/ocr.12207

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OBJECTIVES To investigate the appearance of three esthetic nickel titanium (NiTi) wires after 6 weeks of intra-oral cycling and to determine the association between objective and subjective measures of esthetics. SETTING AND SAMPLE POPULATION A prospective cohort study was undertaken involving participants undergoing upper fixed orthodontic appliance treatment with ceramic brackets. MATERIALS AND METHODS Fifty participants were assigned to one of three groups of NiTi esthetic wires (American Orthodontics Ever White™, Forestadent Biocosmetic™ and GAC High Aesthetic™), with wires retrieved after 6 weeks in situ. Participants completed a bespoke questionnaire exploring perceptions of wire esthetics. Objective measurement of coating loss was undertaken using a custom arch wire jig. RESULTS American Orthodontics Ever White™ had the greatest mean coating loss (50.7%) followed by Forestadent Biocosmetic™ (6%), with GAC High Aesthetic TM undergoing minimal loss (0.07%) (P < .001). The majority of coating loss with the American Orthodontics Ever White™ wires arose in the anterior region while Forestadent Biocosmetic™ wires and GAC High Aesthetic™ wires exhibited coating loss posteriorly (P < .001). These findings were reflected in the subjective assessment with a negative correlation found between coating loss and final Visual Analogue Scale scores (P < .001). CONCLUSIONS Considerable esthetic variation between arch wires following 6 weeks of intraoral cycling was identified in this prospective cohort study. Intraoral cycling has a negative impact on participant perception of arch wire esthetics, and objective and subjective assessment of wire esthetics appears to be consistent.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Pandis, Nikolaos


600 Technology > 610 Medicine & health


1601-6335, 1601-6343






Renate Imhof-Etter

Date Deposited:

14 Jun 2019 11:43

Last Modified:

14 Jun 2019 11:43

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

aesthetics archwire perceptions





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