A survey of output intensity and potential for depth of cure among light-curing units in clinical use

Pilo, Raphael; Oelgiesser, Dan; Cardash, Harold S.

doi:10.1016/s0300-5712(98)00052-9

Cited by 126 publications

(83 citation statements)

References 17 publications

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“…Surveys of practitioners have established that dentists frequently use lights of lower output intensity and/or shorter irradiation times than those recommended by manufacturers and/or research workers. 33,34 It is the responsibility of all practitioners to ensure that they adopt appropriate protocols for ensuring effective and efficient curing of their photo-activated restorations. 35 This investigation is the first report of which the authors are aware documenting individual intra-oral variations in light curing ability.…”

Section: Discussionmentioning

confidence: 99%

A pilot investigation of operator variability during intra-oral light curing

et al. 2002

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Objective To test the hypothesis that operator experience influences the efficacy of light curing in a typical posterior intra-oral location. To investigate whether short cure cycles affect performance. Design A cross-sectional single-centre study designed to assess the efficacy of experienced and inexperienced operators when undertaking simulated intra-oral curing. Setting An in vitro laboratory based investigation conducted in a dental school during 2001. Materials and methods A computer-based technique was used to monitor light intensity in a clinical simulation. Dentists and student operators were tested for their ability to cure a posterior restoration effectively. Relative light intensity was assessed against time for each operator and test run. Results Experienced (qualified) operators produced more effective and consistent cure results than less experienced undergraduate students. Operator performance was not affected by variations in irradiation time. Conclusions This cross-sectional pilot investigation demonstrates that operator experience is a factor in successful clinical photo-curing of posterior restorations. Stable and accurate light guide positioning are required throughout the entire irradiation cycle to optimise intra-oral cure of light-activated restorations. Further investigations are planned to assess the potential of this novel method of assessment for use as a routine teaching aid in clinical practice.Direct placement resin-based composites are increasingly being used as an alternative to dental amalgam for the restoration of cavities in posterior stress bearing situations. [1][2][3][4] Whilst the rate at which dentistry is entering the post amalgam-age varies according to country 1-4 the trend is set to continue as clinicians are increasingly being asked to satisfy the expectations of patients who seek safe, biocompatible and affordable tooth-coloured restorations. 3

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Section: Discussionmentioning

confidence: 99%

A pilot investigation of operator variability during intra-oral light curing

et al. 2002

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“…When GQDs were excited at wavelengths from 400 to 540 nm, their PL peak shifted from 515 to 570 nm. [20] Considering the CQ/DMAEMA co-initiator was reported to be excited at the wavelength of 400-500 nm, [21] the PL light from GO enhanced the intensity of the curing light in the experimental adhesive when it was exposed under the LED light curing unit. Thus more free radicals were generated in the GO@SiO2 filled adhesive, which resulted in higher polymerization rate and degree of conversion.…”

Section: Interestingly a Little Increased Ratio Of I(d)/i(g)mentioning

confidence: 99%

Graphene Oxide-Silica Composite Fillers into the Experimental Dental Adhesives for Potential Therapy

Liu¹,

Hou²,

Chen³

et al. 2017

Med. Res.

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“…When restoring cavities, resin composites should be applied only to increments up to 2 mm thick to ensure adequate light transmittance and full polymerization of the material 1 . Sufficient polymerization of resin composites is needed to achieve appropriate physical and mechanical properties 2 and biocompatibility 3 .…”

Section: Introductionmentioning

confidence: 99%

The Effect of Composition, Temperature and Post-Irradiation Curing of Bulk Fill Resin Composites on Polymerization Efficiency

2016

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Objectives:To evaluate the polymerization efficiency of bulk fill resin-based composites (RBCs) and how their composition, temperature and post-irradiation polymerization influence the results. Methods and Materials: Eight bulk fill RBCs were investigated. Five specimens for each material were prepared for Vickers hardness measurements. The measurements were performed in three depths from the top of the surface of the specimens (0, 2 or 4 mm) immediately and 24 h after polymerization and for the highly viscous bulk fill RBCs after preheating at 54 o C. Statistical analysis was performed using one-way ANOVA and Tukey post hoc tests at a=0.05. Results: As the depth increases microhardness values reduce. The Vickers hardness measurements 24 h after photo-polymerization revealed higher values compared to those obtained immediately after photo-polymerization (p<0.05). There was an increase in microhardness of the RBC materials when preheated at 54 o C in comparison with the room temperature specimens (p<0.05).Conclusions: Polymerization efficiency of bulk fill RBCs is affected by their composition and increases with temperature and post-irradiation polymerization.

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A survey of output intensity and potential for depth of cure among light-curing units in clinical use

Cited by 126 publications

References 17 publications

A pilot investigation of operator variability during intra-oral light curing

A pilot investigation of operator variability during intra-oral light curing

Graphene Oxide-Silica Composite Fillers into the Experimental Dental Adhesives for Potential Therapy

The Effect of Composition, Temperature and Post-Irradiation Curing of Bulk Fill Resin Composites on Polymerization Efficiency

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