J Dent Rehabil Appl Sci.  2017 Dec;33(4):245-251. 10.14368/jdras.2017.33.4.245.

Characteristic of LED light curing unit and classification by generation for clinicians

Affiliations
  • 1Department of Conservative Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea. jeongkil@pusan.ac.kr

Abstract

Since light curing composite resin was introduced in the 1960s, light curing process has been considered as an essential process. Herein, various light sources became available for the process. Quartz-tungsten-halogen (QTH) light curing units (LCUs) dominated the market until the 1990s, before the LED LCUs started replacing them in the 2000s. The LED, developed approximately 50 years ago, came into use in the dentistry field from the late 1990s, and the LED LCUs, with the 2000s. Since then, the LED LCUs have gone through many advancements to its current fourth generation. In accordance to such advancements of the LED light curing unit, the majority of light curing unit used today are LED LCUs. As much as its usage has increased, it is necessary that dental clinicians understand the characteristics of the device. The objective of this review report is to provide the history of the scientific development and describe the characteristics of the LED LCUs.

Keyword

LED; light curing unit; characteristic; generation

MeSH Terms

Classification*
Dentistry

Reference

References

1. Rueggeberg FA. State-of-the-art: dental photocuring - a review. Dent Mater. 2011; 27:39–52. DOI: 10.1016/j.dental.2010.10.021. PMID: 21122903.
2. Jandt KD, Mills RW. A brief history of LED photopolymerization. Dent Mater. 2013; 29:605–17. DOI: 10.1016/j.dental.2013.02.003. PMID: 23507002.
3. Price RB, Ferracane JL, Shortall AC. Light-curing units: a review of what we need to know. J Dent Res. 2015; 94:1179–86. DOI: 10.1177/0022034515594786. PMID: 26156516.
4. Topcu FT, Erdemir U, Sahinkesen G, Yildiz E, Uslan I, Acikel C. Evaluation of microhardness, surface roughness, and wear behavior of different types of resin composites polymerized with two different light sources. J Biomed Mater Res B Appl Biomater. 2010; 92:470–8. PMID: 19957350.
5. EliparTMFreeLight Product Brochure 2002. 3M ESPE.
6. Tsai PC, Meyers IA, Walsh LJ. Depth of cure and surface microhardness of composite resin cured with blue LED curing lights. Dent Mater. 2004; 20:364–9. DOI: 10.1016/S0109-5641(03)00130-1.
7. 3M ESPE. EliparTMFreeLight 2. Product Brochure 2003. Available form: http://multimedia.3m.com/mws/media/191434O/elipar-freelight-2-technicalprofile-english.pdf. (updated 2017 DEC 14).
8. De Ntsply DeTrey. SmartLiteTM PS Brochure. 2004. Available form: http://www.dentsply.de/bausteine.net/f/7047/SCSmartLite030902.pdf. (updated 2017 DEC 14).
9. Kerr. L.E. Demetron II Product Brochure 2005.
10. David JR, Gomes OM, Gomes JC, Loguercio AD, Reis A. Effect of exposure time on curing efficiency of polymerizing units equipped with lightemitting diodes. J Oral Sci. 2007; 49:19–24. DOI: 10.2334/josnusd.49.19. PMID: 17429178.
11. 3M Oral Care. EliparTMS10. Product Brochure 2010. Available form: http://multimedia.3m.com/mws/media/575877O/elipartm-s10-led-curing-light.pdf. (updated 2017 DEC 14).
12. 3M Oral Care. EliparTMDeepCure-S Product Brochure 2016. Available form: https://multimedia.3m.com/mws/media/1173327O/elipar-deepcure-ledcuring-lights-technical-product-profile.pdf. (updated 2017 DEC 14).
13. Kerr. Demi Plus Product Brochure 2011. Available form: https://www.kerrdental.com/kerr-restoratives/demi-plus-dental-curing-lights. (updated 2017 DEC 14).
14. DENTSPLY. SmartLightTMFocus Brochre 2012. Available form: http://www.smartlitefocus.com. (updated 2017 DEC 14).
15. Ultradent Products Inc. Ultralume 5 Brochure 2003.
16. GC corp. G-Light Brochure. 2006.
17. Price RB, Labrie D, Rueggeberg FA, Felix CM. Irradiance differences in the violet (405 nm) and blue (460 nm) spectral ranges among dental light-curing units. J Esthet Restor Dent. 2010; 22:363–77. DOI: 10.1111/j.1708-8240.2010.00368.x. PMID: 21126292.
18. IvoclarVivadent. Bluephase®G2 Brochure 2009. Available form: https://www.ivoclarvivadent.us/explore/bluephase-g2. (updated 2017 DEC 14).
19. IvoclarVivadent. Bluephase®Style Brochure 2013. Available form: https://www.ivoclarvivadent.us/explore/bluephase-style. (updated 2017 DEC 14).
20. IvoclarVivadent. Bluephase®20i Brochure 2011. Available form: https://www.ivoclarvivadent.us/explore/bluephase-20i. (updated 2017 DEC 14).
21. IvoclarVivadent. Bluephase®Style 20i Brochure 2016. Available form: https://www.ivoclarvivadent.us/explore/bluephase-style-20i. (updated 2017 DEC 14).
22. Ultradent Products Inc. Valo Brochure 2011. Available form: https://www.ultradent.com/en-us/Dental-Products-Supplies/equipment/VALO-LEDCuring-Lights/VALO-Cordless/Pages/default.aspx. (updated 2017 DEC 14).
23. ACTEON. ScanWave product Brochure 2010. Available form: https://www.acteongroup.com/uken/my-products/equipment/polymerization/miniled-scanwave. (updated 2017 DEC 14).
24. Shortall AC, Palin WM, Jacquot B, Pelissier B. Advances in light-curing units: four generations of LED lights and clinical implications for optimizing their use: Part 2. From present to future. Dent Update. 2012; 39:13–22. DOI: 10.12968/denu.2012.39.1.13. PMID: 22720376.
25. AlShaafi MM, Harlow JE, Price HL, Rueggeberg FA, Labrie D, AlQahtani MQ, Price RB. Emission characteristics and effect of battery drain in “Budget” curing lights. Oper Dent. 2016; 41:397–408. DOI: 10.2341/14-281-L. PMID: 26652017.
26. Hiemenz PC, Lodge TP. Polymer chemistry. 2nd ed. Boca Raton: CRC Press;2007. PMID: 18024052.
27. Price RB, Whalen JM, Price TB, Felix CM, Fahey J. The effect of specimen temperature on the polymerization of a resin-composite. Dent Mater. 2011; 27:983–9. DOI: 10.1016/j.dental.2011.06.004. PMID: 21798590.
28. Watts DC, Alnazzawi A. Temperature-dependent polymerization shrinkage stress kinetics of resincomposites. Dent Mater. 2014; 30:654–60. DOI: 10.1016/j.dental.2014.03.004. PMID: 24703546.
29. Stahl F, Ashworth SH, Jandt KD, Mills RW. Lightemitting diode (LED) polymerisation of dental composites: flexural properties and polymerization potential. Biomaterials. 2000; 21:1379–85. DOI: 10.1016/S0142-9612(00)00029-6.
30. Roberts HW, Vandewalle KS, Berzins DW, Charlton DG. Accuracy of LED and halogen radiometers using different light sources. J Esthet Restor Dent. 2006; 18:214–22. discussion 223-4. DOI: 10.1111/j.1708-8240.2006.00023.x. PMID: 16911424.
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