The efficacy of a plasma arc light in orthodontic bonding: a randomized controlled clinical trial

• Localización: Journal of orthodontics, ISSN-e 0301-228X, ISSN 1465-3125, Nº. 335, 2008, págs. 202-209
• Idioma: inglés
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• Resumen

  • Objective: To evaluate the clinical performance of a plasma arc light (Ortho LITE, 3M Unitek, Monrovia, CA, USA) against a conventional tungsten�quartz halogen curing light (Visilux 2, 3M Unitek, Monrovia, CA, USA) for direct orthodontic bonding.

    Design: A single centre prospective randomized controlled clinical trial.

    Setting: The Orthodontic Department at St Luke�s Hospital, Bradford, UK.

    Subjects and methods: Forty-three consecutive patients requiring fixed appliances from the orthodontic waiting list. A split mouth technique was adopted; with quadrants randomly assigned to either the plasma arc light or the conventional halogen curing light and bonded directly with APC pre-adjusted edgewise brackets (3M Unitek, Monrovia, CA, USA).

    Main outcome measure: Bracket failures.

    Secondary outcome measures: Time taken to bond-up the appliances, patient sensitivity or discomfort during curing and time to replace failed brackets were investigated.

    Results: No statistically significant difference in bracket failure rates over the full course of treatment was found between the plasma arc light (6.7%; 95% CI 4.5�10.0) and the halogen curing light (9.5%; 95% CI 6.8�13.1). There was no statistically significant difference in bracket survival times. The bond-up times were typically reduced by 204 seconds per patient with the plasma arc light. There were no differences in patient reported sensitivity or discomfort or rebond times.

    Conclusion: The plasma arc light is a viable clinical alternative to the conventional halogen curing light with benefits for both the clinician and patient due to reduced bonding times.