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A clinical trial of light cure acrylic resin for orthodontic use

University of Glasgow Dental School, UK

Address for correspondence:
Professor W. J. S. Kerr, University of Glasgow Dental School, 378 Sauchiehall Street, Glasgow G2 3JZ, UK. E-mail:
w.j.s.kerr{at}dental.gla.ac.uk

Abstract

Objective To ascertain whether or not the less porous surface associated with visible light cure appliances and the absence of free monomer had any measurable affect upon mucosal erythema, and to assess the durability of such appliances in a clinical context.

Design A prospective randomized trial of visible light cure (Triad VLC) and autopolymerizing (Orthoresin) acrylic resin used as orthodontic base plate materials.

Setting University Dental Hospital and School.

Subjects Fifty subjects from a consecutively enrolled sample of 69 (19 drop outs) for removable appliance therapy (23 VLC, 27 AP).

Outcome measures Erythema meter scores and appliance breakages.

Results No statistical difference in mucosal erythema between the two materials was found. Fifty-two per cent of VLC appliances broke during a 6-month period, as opposed to 7 per cent of AP appliances.

Conclusions VLC appears to have no clinically beneficial effect on the oral mucosa compared with AP. VLC appliances are currently not sufficiently durable to make them a viable alternative to AP appliances.

Key words: Light cure acrylic resin, removable appliances

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