Assessing dental light-curing units’ output using radiometers: A narrative review

Assaf, Cendrella; Fahd, Jean-Claude; Sabbagh, Joseph

doi:10.4103/jispcd.jispcd_407_19

Cited by 8 publications

(10 citation statements)

References 16 publications

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“…The irradiance measurements from hand-held dental radiometers are affected by the effective tip diameter, the light beam profile, the emission spectrum, the position of the LCU tip , and any nonuniformity in the light output across the LCU tip. 9,45 The entrance aperture into some of the dental radiometers was smaller than the light tip diameter of some of the LCUs (Tables 1 and 2). This, together with the wide range in the emission spectra from the LCUs (Figure 2), helps to explain why the dental radiometers were inaccurate when measuring some LCUs.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 As a result, dental offices must use a light curing unit (LCU) that delivers an adequate light output because the wavelengths and the amount of light delivered from the LCU affect the physical properties and biocompatibility of the RBC. [3][4][5][6][7][8][9] Insufficient photo-curing also reduces the bond strength between the RBC and the tooth, thus increasing the risk of secondary caries, 7,10 and reducing the longevity of RBC restorations, cements, sealants, and orthodontic resins. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Consequently, billions of dollars of dental work now depend on the ability of LCUs to photo-cure dental resins.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6][7][8][9] Insufficient photo-curing also reduces the bond strength between the RBC and the tooth, thus increasing the risk of secondary caries, 7,10 and reducing the longevity of RBC restorations, cements, sealants, and orthodontic resins. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Consequently, billions of dollars of dental work now depend on the ability of LCUs to photo-cure dental resins. However, despite the importance of the LCU, many clinicians may have yet to recognize the crucial role that LCUs play in their practice.…”

Section: Introductionmentioning

confidence: 99%

“…The use of dental amalgam is being phased down as part of the Minamata Agreement, and light‐cured resin‐based composites (RBCs) are now the most common material used to restore teeth 1,2 . As a result, dental offices must use a light curing unit (LCU) that delivers an adequate light output because the wavelengths and the amount of light delivered from the LCU affect the physical properties and biocompatibility of the RBC 3‐9 . Insufficient photo‐curing also reduces the bond strength between the RBC and the tooth, thus increasing the risk of secondary caries, 7,10 and reducing the longevity of RBC restorations, cements, sealants, and orthodontic resins 7‐20 .…”

Section: Introductionmentioning

confidence: 99%

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Irradiance from 12LEDlight curing units measured using 5 brands of dental radiometers

Maucoski

Price

Arrais

2023

J Esthet Restor Dent

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ObjectiveTo evaluate the accuracy of five brands of radiometers in reporting the irradiance (mW/cm2) from twelve brands of LCUs compared to a ‘Gold Standard’ (GS) reference obtained from a hand‐held laboratory‐grade radiometer.Materials and MethodsThe irradiance was measured from two examples of twelve brands of previously used LCUs on two examples of five brands of dental radiometers. The emission spectrum was also obtained. Irradiance data from each brand of LCU against each meter was analyzed using the Shapiro–Wilk test for normality. The irradiance values were subjected to a two‐way ANOVA followed by Bonferroni tests for each LCU brand. Finally, a descriptive analysis was made using a 95% confidence interval around the mean irradiance.ResultsThe power output from the LCUs ranged from 271 mW to 1005 mW. Among the tested radiometers, only the Bluephase Meter II could accurately report the irradiance from 11 out of the 12 brands of LCU evaluated in this study. When measured using the “GS” system, the mean irradiance values from the two examples of nine brands of previously used LCU were not always within ±10% of the irradiance values stated by the manufacturer.ConclusionsThe mean irradiance values from 9 of the 12 brands of used LCUs were beyond ±10% of the irradiance values stated by the manufacturer. Only the Bluephase Meter II could accurately report the irradiance from 11 out of the 12 brands of LCU evaluated in this study.Clinical SignificanceThere was a wide range in the power output from the LCUs tested. It was impossible to accurately measure the irradiance from all the LCUs using the dental radiometers examined. However, dental radiometers should still be used in dental offices to monitor the light output from LCUs and verify that they are working correctly before they are used on patients.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Irradiance from 12LEDlight curing units measured using 5 brands of dental radiometers

Maucoski

Price

Arrais

2023

J Esthet Restor Dent

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“…Concomitante a isso, houve um aumento considerável na procura por tratamentos mais estéticos e conservadores 1,2 . Sendo assim, as restaurações estéticas tornaram-se muito populares e os compósitos à base de resina composta foram amplamente utilizados 1,3 .…”

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Implicações Clínicas Envolvidas no Processo de Fotopolimerização da Resina Composta

Silva,

Dias,

Medeiros

et al. 2022

Arch Health Invest

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Introdução: Devido à grande demanda por tratamentos mais conservadores e estéticos, os compósitos a base de resina composta fotoativados começaram a ser amplamente utilizados nos procedimentos restauradores e os fotopolimerizadores, principalmente do tipo diodo emissor de luz (LED), tornaram-se indispensáveis nos consultórios odontológicos, visto que são essenciais para o processo de fotopolimerização desses compósitos. Objetivo: Este trabalho consiste em uma revisão da literatura que objetiva discorrer acerca das implicações clínicas envolvidas no processo de fotopolimerização dos compósitos dentais, descrevendo fatores que podem ter influência na polimerização dos materiais resinosos no tratamento odontológico. Material e método: Realizou-se uma busca nas bases de dados eletrônicas: PubMed, SciELO, BVS e Google Acadêmico, através do rastreio de 40 artigos publicados entre 2005 e 2020, além de um livro considerado proveitoso para o conteúdo deste estudo. Resultados: A fotopolimerização dos materiais resinosos está relacionada à vários parâmetros, como a intensidade e comprimento de onda da luz emitida pelo aparelho fotopolimerizador, tempo de exposição à luz, volume de material restaurador a ser fotopolimerizado, quantidade e tipo de fotoiniciador presente no material, tipo de partícula de carga presente, técnica de fotopolimerização e a cor e grau de translucidez da resina utilizada. Tais fatores são capazes de afetar as propriedades mecânicas e funcionais de restaurações em resina composta. Conclusão: É fundamental que os cirurgiões-dentistas conheçam as implicações clínicas envolvidas no processo de fotopolimerização dental e busquem maneiras para corrigir condutas que prejudiquem a etapa de fotoativação do material restaurador, para otimizar essa etapa clínica e desenvolver protocolos confiáveis, bem como tratamentos restauradores bem-sucedidos.

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Light curing infection control barriers: do some types jeopardize the concept of conventional bulk-fill composites?

Sherief,

Kandil,

El-Refai

2024

BMC Oral Health

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Background Using infection control barriers (ICBs) on light curing units (LCUs) became mandatory to achieve proper infection control measures without jeopardizing the integrity of the restorations, especially at deeper layers. This study explored the effect of two ICBs on the irradiance of the LCU, as well as the degree of conversion (DC) and flexural strength (FS) of two types of bulk-fill composites. Water vapor permeability (WVP) of both barriers was also assessed to evaluate the capability of such barriers to prevent transmission of blood and saliva droplets and aerosols. Methods Two bulk-fill composites (X-tra fil and Tetric N- ceram) and two ICBs (Pinnacle Cure sleeve and Sanita wrapping film) were used in this study. Light irradiance was recorded per experimental condition using spectroradiometer. For DC and FS, specimens of 4 mm thickness were prepared. Each specimen was composed of two separable upper and lower layers of thickness 2 mm. DC and FS were measured using Infra-red spectroscopy and three-point loading test respectively. WVP was investigated using the cup method. Means and standard deviations were calculated, and the data were statistically analyzed using factorial analysis of variance test (α = 0.05). Results Light irradiance showed highest values using no ICBs and lowest values using Pinnacle curing sleeve. Both bulk-fill composites showed higher DC mean values without ICBs and when using Sanita wrapping film for both upper and lower layers of the specimens compared to Pinnacle curing sleeve. The upper layers of composite specimens showed higher DC compared to lower layers for all experimental conditions. Both ICBs had no adverse effect on FS of both composites’ upper layers. Pinnacle sleeve significantly reduced FS of both composites’ lower layers. X-tra fil showed higher DC and FS compared to Tetric N-Ceram for all experimental conditions. Regarding WVP; the wrapping film showed higher WVP compared to the curing sleeve. Conclusions Sanita wrapping film can be used as a successful ICB, without jeopardizing the concept of bulk-fill composites. Pinnacle cure sleeve can be considered an effective ICB, however its influence on properties and serviceability of bulk-fill composites remains questionable.

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Assessing dental light-curing units’ output using radiometers: A narrative review

Cited by 8 publications

References 16 publications

Irradiance from 12LEDlight curing units measured using 5 brands of dental radiometers

Irradiance from 12LEDlight curing units measured using 5 brands of dental radiometers

Implicações Clínicas Envolvidas no Processo de Fotopolimerização da Resina Composta

Light curing infection control barriers: do some types jeopardize the concept of conventional bulk-fill composites?

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