Evaluation of effect of different disposable infection control barriers on light intensity of light-curing unit and microhardness of composite - An in vitro study

Khode, Rajiv T; Shenoi, Pratima; Kubde, Rajesh; Makade, Chetana Sachin; Wadekar, Kanchan D; Khode, Priyanka

doi:10.4103/jcd.jcd_171_16

Cited by 10 publications

(13 citation statements)

References 17 publications

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“…Air bubbles can further increase the amount of refraction, decreasing the passage of light and the effectiveness of curing the material. This effect probably occurred in polyethylene groups as the material does not overlap with the LED tip, increasing the refraction of light (Khode et al,2017;Shortall et al, 2016;Pollington et al,2009). According to Cadenaro et al (2019) and Rueggeberg et al (2017), biological barriers can reduce irradiance of up to 40%, which would compromise polymerization of conventional composite resins (Reis & Loguercio 2007;Mendonza et al,2020).…”

Section: Discussionmentioning

confidence: 99%

A influência das barreiras translúcidas na eficácia da fotopolimerização odontológica

Rúbio¹,

Júnior²,

Nobre³

et al. 2021

RSD

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O objetivo do presente estudo foi avaliar a irradiância de diferentes fotoativadores quando submetidos a utilização de diferentes tipos de barreiras de proteção biológica. Os aparelhos testados foram Bluephase N. Radii-Cal e VALO cordless. As barreiras de biossegurança foram: Polietileno. Policloreto de vinila com 1 volta e Policloreto de vinila com 2 voltas. As pontas dos aparelhos tiveram seu diâmetro aferido a partir de um paquímetro digital e a área de cada ponteira foi calculada. A potência (mW) dos aparelhos foi medida com um potenciômetro por 20 segundos. e três vezes para cada aparelho. E então. a irradiância (mW / cm²) foi calculada pelo quociente da potência do aparelho pela área da seção transversal da ponta do fotopolimerizador. O teste anova dois fatores demonstrou interação estatisticamente significante entre os diferentes tipos de aparelhos fotopolimerizadores e barreiras de proteção biológica (p < 0.05). Dentre os fotopolimerizadores. Bluephase N obteve os maiores valores de irradiância independente do tipo de barreira. seguido do VALO cordless e Radii-Cal. Todos os aparelhos obtiveram maior irradiância no grupo controle. quando não faziam uso de barreiras descartáveis. Dentre as barreiras. o policloreto de vinila com 1 volta obteve o melhor desempenho em todos os grupos de fotopolimerizadores. Apesar do uso de barreiras de biossegurança terem reduzido a irradiância dos aparelhos. esses valores não foram inferiores ao mínimo adequado para a polimerização de resinas compostas convencionais (400 mW/cm²).

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Section: Discussionmentioning

confidence: 99%

A influência das barreiras translúcidas na eficácia da fotopolimerização odontológica

Rúbio¹,

Júnior²,

Nobre³

et al. 2021

RSD

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“…A previous study suggested a reduction in radiant emittance of approximately 10% [ 43 ]. In contrast, others suggested that there was no marked detrimental effect on polymerization [ 44 ]. Using disinfectants to clean the light tips also reduces the reflector efficiency of the tips [ 23 ].…”

Section: Discussionmentioning

confidence: 99%

Assessment of the radiant emittance of damaged/contaminated dental light-curing tips by spectrophotometric methods

et al. 2020

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Objectives This study investigated the effects of physically damaged and resin-contaminated tips on radiant emittance, comparing them with new undamaged, non-contaminated tips using 3 pieces of spectrophotometric laboratory equipment. Materials and Methods Nine tips with damage and/or resin contaminants from actual clinical situations were compared with a new tip without damage or contamination (control group). The radiant emittance was recorded using 3 spectrophotometric methods: a laboratory-grade thermopile, a laboratory-grade integrating sphere, and a portable light collector (checkMARC). Results A significant difference between the laboratory-grade thermopile and the laboratory-grade integrating sphere was found when the radiant emittance values of the control or damaged/contaminated tips were investigated ( p < 0.05), but both methods were comparable to checkMARC ( p > 0.05). Regardless of the method used to quantify the light output, the mean radiant emittance values of the damaged/contaminated tips were significantly lower than those of the control ( p < 0.05). The beam profile of the damaged/contaminated tips was less homogeneous than that of the control. Conclusions Damaged/contaminated tips can reduce the radiant emittance output and the homogeneity of the beam, which may affect the energy delivered to composite restorations. The checkMARC spectrophotometer device can be used in dental offices, as it provided values close to those produced by a laboratory-grade integrated sphere spectrophotometer. Dentists should assess the radiant emittance of their light-curing units to ensure optimal curing in photoactivated, resin-based materials.

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“…[28] A study by Khode et al . [29] tested the effect of using four different disposable barriers on the light intensity against the control group where no barrier was used and found that there was a statistically significant reduction in light intensity with all ICBs, but the hardness ratio was only significantly affecting with using Latex cut glove pieces (LCGP) as an ICB. They recommended the use of disposable ICBs except the LCGP.…”

Section: Discussionmentioning

confidence: 99%

Infection control barrier and curing time as factors affecting the irradiance of light-cure units

Ajaj

Nassar

Hasanain

2018

J Int Soc Prevent Communit Dent

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Objective:The objective of the study is to investigate the effect of infection control barrier (ICB) and curing time on irradiance of light cure units (LCUs).Methods:Irradiance (mW/cm2) of the LCUs at a government dental school were recorded with and without ICB at 0 (T0), 10 (T10), and 20 (T20) seconds using a digital radiometer. Data were analyzed using IBM® SPSS® Statistics Version 17 for Windows software for the analysis of variance and Bonferroni methods at 0.05 significance level.Results:Using ICB resulted in a statistically significant effect on the irradiance mean (P < 0.01). A significant difference existed between the four different brands of LCUs at different time intervals, irrespective of the use of ICB. At T0 and T10, the mean output of Acteon mini-light-emitting diode (LED) was significantly higher than that of either the Kerr Demi Ultra or the Kavo Polylux II. At T20, E-Morlit's mean irradiance was significantly higher than that of Kerr Demi Ultra, which in turn was significantly higher than that of the Kavo PolyLux II. The mean irradiance of the LEDs was significantly higher than that of the halogens irrespective of barrier placement and at all-time points.Conclusion:The ICB used in this study resulted in a statistically significant reduction in the irradiance output. No significant difference in the irradiance was found at different curing time intervals for the tested units regardless of ICB usage.

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Evaluation of effect of different disposable infection control barriers on light intensity of light-curing unit and microhardness of composite - An in vitro study

Cited by 10 publications

References 17 publications

A influência das barreiras translúcidas na eficácia da fotopolimerização odontológica

A influência das barreiras translúcidas na eficácia da fotopolimerização odontológica

Assessment of the radiant emittance of damaged/contaminated dental light-curing tips by spectrophotometric methods

Infection control barrier and curing time as factors affecting the irradiance of light-cure units

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