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The effect of inter-incisor opening, cavity location, and operator experience on the energy delivered by light curing unit to simulated dental restoration

Santini, Ario and Roebuck, Elizabeth and Harun, Nor Asilah (2013) The effect of inter-incisor opening, cavity location, and operator experience on the energy delivered by light curing unit to simulated dental restoration. International Journal of Paediatric Dentistry, 23 (Sup 1). p. 208. ISSN 0960-7439

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Abstract

Background Curing of resin composites depends on delivery of adequate total-energy, which may be operator dependent. Aim To determine the effect of inter-incisal opening, cavity location and operator experience on the total-energy delivered to simulated preparations. Design The following were recruited: junior dental nurses(5), senior dental nurses(5) and qualified dentists(5). Each operators light cured two simulated restorations in MARC™patient-simulator using a Demi™LCU, for 20 seconds and the total-energy was calculated: (1) tooth 27, Class 1 cavity, inter-incisal opening 25mm and 45mm; (2) tooth 11, Class III cavity. The procedure was repeated 5 times for each simulated cavity. Statistically comparisons (Kruskal-Wallis Test: alpha=0.05) of the following were made: between inter-incisal openings; between location and between the three groups in the total-energy delivered (J/cm² (Mean±SD)). Results Less total-energy was delivered to posterior cavity at 25mm (12.13±5.27 J/cm²) versus at 45mm (16.92±5.64 J/cm²) by all operators (p<0.05). At 45mm, less total-energy delivered to the posterior cavity compared to anterior cavity (25.07±7.35 J/cm²) and it was statically significant (p<0.05). There was no statistically difference between junior nurses and qualified dentists (p>0.05) but there was significant difference in the total-energy delivered between senior nurses (20.07±7.79 J/cm²) and junior nurses (17.49±7.57 J/cm²) and, between senior nurses and qualified dentists (16.55±8.70 J/cm²) (p<0.05). Conclusions Inter-incisal mouth opening, location of the cavity, and operators experience in light curing, affected the total-energy delivered to cavities in a simulated clinical environment.

Item Type: Article (Journal)
Additional Information: 5917/32809
Uncontrolled Keywords: inter-incisor opening
Subjects: R Medicine > RK Dentistry
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Dentistry
Depositing User: Dr Nor Asilah Harun
Date Deposited: 18 Nov 2013 10:06
Last Modified: 18 Nov 2013 10:10
URI: http://irep.iium.edu.my/id/eprint/32809

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