State-of-the-art: Dental photocuring - A review

Dental Materials

Volumn 27, Issue 1, 2011, Pages 39-52

  Rueggeberg, Frederick A ^a  

^a MEDICAL COLLEGE OF GEORGIA   (United States)

Author keywords

Argon laser; Beam homogeneity; LED; Photocuring; Plasma arc; Quartz tungsten halogen

Indexed keywords

ARGON LASER; BEAM HOMOGENEITY; LED; PHOTOCURING; PLASMA ARC; QUARTZ-TUNGSTEN-HALOGEN;

ARGON; CURING; DENTISTRY; GAS LASERS; INNOVATION; QUARTZ; TUNGSTEN;

ARGON LASERS;

BIOMEDICAL AND DENTAL MATERIALS;

CHEMISTRY; CLASSIFICATION; DENTAL CARE; DENTAL EQUIPMENT; DENTAL TECHNOLOGY; EQUIPMENT DESIGN; HUMAN; INSTRUMENTATION; PHOTOCHEMISTRY; POLYMERIZATION; RADIATION EXPOSURE; REVIEW;

CURING LIGHTS, DENTAL; DENTAL MATERIALS; EQUIPMENT DESIGN; HUMANS; PHOTOCHEMICAL PROCESSES; POLYMERIZATION; TECHNOLOGY, DENTAL; TOOTH BLEACHING;

EID: 78651252694     PISSN: 01095641     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.dental.2010.10.021     Document Type: Review

References (138)

1. R. Craig Chemistry composition, and properties of composite resins H. Horn, Symposium on composite resins in dentistry 1981 The Dental Clinics of North America Philadelphia, Saunders 219 239
2. Foster J, Walker S, Walker R, inventors. The Amalgamated Dental Company Limited, London, assignee: dental filling materials. United States Patent 3,825,518; 1974.
3. H. Albers Resin curing systems Tooth-colored restoratives 8th ed. 1996 Alto Books Santa Rosa, CA p. 5b1-5b9
4. G. Paffenbarger, and N. Rupp Composite restorative materials in dental practice: a review Int Dent J 24 1974 1 11
5. R.W. Phillips, D.R. Avery, R. Mehra, M.L. Swartz, and R.J. McCune Observations on a composite resin for Class II restorations: three-year report J Prosthet Dent 30 1973 891 897
6. Nass GI, Bassemir, Robert W, Carlick, Daniel J, inventor. Sun Chemical Corp, assignee: radiation curable compositions. United States Patent 3,551.311; 1970.
7. Juna K, Nakayama H, Asada K, inventors. Kansai Paint Company, Limited, assignee: method of coating using actinic radiation. United States Patent 3,625,744; 1971.
8. Kai T, Hagihara T, Ishido S, Ishido T, inventors. Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, Japan, assignee: photopolymerizable diisocynate modified unssaturated polyester containing acrylic monomers. United States Patent 3,677,920; 1972.
9. Steinberg I, inventor. Bausch & Lomb Incorporated, Rochester,NY, assignee: epoxy adhesive containing acrylic acid-epoxy reaction products as photosensitizers. United States Patent 3,450,613; 1969.
10. Lienhard O, inventor. Canrad Precision Industries, Inc., assignee: instrument for transmitting ultra-violet radiation to a limited area. United States Patent 3,712,984; 1973.
11. G.A. Murray, J.L. Yates, and S.M. Newman Ultraviolet light and ultraviolet light-activated composite resins J Prosthet Dent 46 1981 167 170
12. Waller D, inventor. Dentsply International, Inc., York, PA, assignee: photopolymerizable dental products. United States Patent 3,709,866; 1973.
13. M.G. Buonocore, and J. Davila Restoration of fractured anterior teeth with ultraviolet-light-polymerized bonding materials: a new technique J Am Dent Assoc 86 1973 1349 1354
14. Waller D, inventor. Dentsply Research & Development Corporation, Milford, DE, assignee: orthodontic bracket assembly and method for attachment. United States Patent 4,063,360; 1977.
15. J.W. Stansbury Curing dental resins and composites by photopolymerization J Esthet Dent 12 2000 300 308
16. N.S. Allen Photoinitiators for UV and visible curing of coatings: mechanisms and properties J Photochem Photobiol A 100 1996 101 107
17. W.D. Cook Spectral distributions of dental photopolymerization sources J Dent Res 61 1982 1436 1438
18. A.D. Wilder Jr., K.N. May Jr., S.C. Bayne, D.F. Taylor, and K.F. Leinfelder Seventeen-year clinical study of ultraviolet-cured posterior composite Class I and II restorations J Esthet Dent 11 1999 135 142
19. Gonser D, inventor. Dentsply Research & Development Corp., Milford, DE, assignee: Xenon light apparatus for supplying ultraviolet and visible spectra. United States Patent 4,229,658; 1980.
20. R. Tirtha, P.L. Fan, J.B. Dennison, and J.M. Powers In vitro depth of cure of photo-activated composites J Dent Res 61 1982 1184 1187
21. C. Main, A. Cummings, H. Moseley, K.W. Stephen, and F.C. Gillespie An assessment of new dental ultraviolet sources and u.v.-polymerized fissure sealants J Oral Rehabil 10 1983 215 227
22. Dr. Nairn Wilson. Personal communication. January 2008.
23. Allen R, Chaberek S, Inventors. Technical Operations, Inc., Burlington, MA, assignee: labile hydrogen initiators for visible light photopolymerization. United States Patent 3,488,269; 1970.
24. Frodsham T, Inventor. Imperial Chemical Indistries Limited, London, assignee: photopolymerizable compositions. United States Patent 4,089,762; 1978.
25. Dart E, Mencek J, Inventors. Imperial Chemical Industries Limited, London, assignee: photopolymerizable composition. United States Patent 4,071,424; 1978.
26. Dart E, Cantwell J, Traynor J, Jaworzyn J, Nemcek J, Inventors. Imperial Chemical Industries Limited, London, assignee: photocurable dental filling compositions. United States Patent 4,110,184. 1978.
27. Dart E, Cantwell J, Traynor J, Jaworzyn J, Nemcek J, Inventors. Imperial Chemical Industries Limited, London, assignee: method of repairing teeth using composition which is curable by irradiation with visible light. United States Patent 4,089,763; 1978.
28. J.F. Rabek, J.P. Fouassier, L.-A. Linden, E. Andrezejewska, J. Jakubiak, J. Paczkowski, and A. Wrzyszczynski Camphorquione/amine photoinitiating system for photocuring Trends Photochem Photobiol 5 1999 51 61
29. J Yearn The development of Fotofil International symposium on fotofil dental restorative January 27 1978 Franklin Scientific Projects London
30. F. Rueggeberg Contemporary issues in photocuring Comp Cont Educ Dent 20 Suppl. 25 1999 S4 S15
31. L.-A. Linden Chapter 13. Photocuring of polymeric dental materials and plastic composite resins Photocuring of polymeric dental materials and plastic composite resins 1993 Essex: Elsevier p. 388-465
32. P. Eriksen, P.M. Moscato, J.K. Franks, and D.H. Sliney Optical hazard evaluation of dental curing lights Community Dent Oral Epidemiol 15 1987 197 201
33. ANSI/IESN.A. Recommended practice for photobiological safety for lamps and lamp systems - general requirements. RP-271-05 2005 Illuminating Engineering Society of North America New York NY
34. Croll T, Inventor. Hand-Held Light Filter. United States Patent 4,640,685; 1987.
35. Nagel R, Inventor. Bisco Inc., Schaumburg, IL, assignee: snap-on light shield for a dental composite light curing gun. United States Patent 6,155,823; 2000.
36. T. McGowan Working knowledge: halogen lights Sci Am 275 1996 92
37. Friedman J, Inventor. Dental light-curing lamp unit with interchangable autofocus light guides. United States Patent 4,948,215; 1990.
38. Gosner D, Inventor. Dentsply Research & Development, assignee: visible light aparatus for curing photo-curable compositions. United States Patent 4,385,344; 1983.
39. W.F. Caughman, F.A. Rueggeberg, and J.W. Curtis Jr. Clinical guidelines for photocuring restorative resins J Am Dent Assoc 126 1995 1280 1282 1280-1282
40. Bussiere R Smith R, Inventors. Solid State Systems Corporation, Lynnwood, WA, assignee: light generating apparatus for curing dental restorative composites. United States Patent 4,450,139; 1984.
41. Y.C. Chen, J.L. Ferracane, and S.A. Prahl Quantum yield of conversion of the photoinitiator camphorquinone Dent Mater 23 2007 655 664
42. M.G. Neumann, W.G. Miranda Jr., C.C. Schmitt, F.A. Rueggeberg, and I.C. Correa Molar extinction coefficients and the photon absorption efficiency of dental photoinitiators and light curing units J Dent 33 2005 525 532
43. W. Rutsch, D. Dietliker, D. Leppard, M. Kohler, L. Misev, and U. Kolczak Recent developments in photoinitiators Prog. Org. Coat. 27 1996 227 239
44. Photoinitiators for UV curing - key products selection guide October 2003 Ciba Specialty Chemicals, Inc. Basel, Switzerland [cited g-28/2003]
45. Lucerin TPO, Technical Information. Charlotte, NC: BASF Corporation; June 2001.
46. Y.J. Park, K.H. Chae, and H.R. Rawls Development of a new photoinitiation system for dental light-cure composite resins Dent Mater 15 1999 120 127
47. K. Chae, and G. Sun Phenylpropanedione: a new visible light photosensitizer for dental composite resin with higher efficienty than camphorquinone Bull Kor Chem Soc 19 1998 152 154
48. A. Ogunyinka, W.M. Palin, A.C. Shortall, and P.M. Marquis Photoinitiation chemistry affects light transmission and degree of conversion of curing experimental dental resin composites Dent Mater 23 2007 807 813
49. A. Cassoni, and J.A. Rodrigues Argon laser: a light source alternative for photopolymerization and in-office tooth bleaching Gen Dent 55 2007 416 419
50. Yarborough D, Inventor. BriteSmile, Inc., Salt Lake City, UT, assignee: method for Tooth Whitening. United States Patent 5,645,428; 1997.
51. Dental/Medical Diagnostic Systems, Inc. announces it has received 510-K notification for the Apollo 95E Business Wire; 1998 [cited 2010 August 20]; Available from: http://findarticles.com/p/articles/mi-m0EIN/is-1998-August-20/ ai-50255847/?tag=content;col1.
52. Cipolla A, Inventor. Ion Laser Technology, Salt Lake City, UT, assignee: laser system for use in dental procedures. United States Patent 5,616,141; 1997.
53. W. Kelsey, R. Blankenau, G. Powell, W. Barkmeyer, W. Cavel, and B. Whisenant Enhancement of physical properties of resin restorative materials by laser polymerization Lasers Surg Med 9 1989 623 627
54. K. Zakariasen Shedding new light on lasers. Some timely words of caution for readers J Am Dent Assoc 124 1993 30 51
55. M.L. Turbino, L.C. Belan, V. Soprano, K. Martis Rode, P. Ramos Lloret, and M. Nicolau Youssef Argon ion laser curing depth effect on a composite resin Lasers Med Sci 2010 Epub ahead of print, May 29
56. M. Docktor Esthetics and the argon ion laser J Esthet Dent 6 1994 77 82
57. Z. Tarle, A. Meniga, M. Ristic, J. Sutalo, and G. Pichler Polymerization of composites using pulsed laser Eur J Oral Sci 103 1995 394 398
58. W. Kelsey, R.J. Blankenau, G.L. Powell, W. Barkmeyer, and E. Stormberg Power and time requirments for using the arogn laaser to polymerize composite resins J Clin Laser Med Surg 10 1992 273 278
59. Shimoji Y, Inventor. Lethod of cuing a cordless medical laser to cure composites and sterilize living tissue. United States Patent 6.099,520; 2000.
60. Schulz P, Inventor. Elektrische Glhlampen m.b.H., Munich, Germany, assignee: electric high pressure discharge lamp of high luminous intensity. United States Patent 3,218,510; 1965.
61. Long W, Inventor. Pulsed radiation source adapted for curing dental restoratives. United States Patent 4,309,617; 1982.
62. Nath G, Inventor. Flexible light guide, particularly for medical/dental use. United States Patent 4,009,382; 1977.
63. 58-24 Apollo 95E Curing Light (Project 98-53) (8/99). USAF Dental Evaluation & Consultation Service; 1999 [cited 2010 August 10]; Available from: http://airforcemedicine.afms.mil/idc/groups/public/documents/afms/ctb- 109423.pdf.
64. J.W. Kim, K.T. Jang, S.H. Lee, C.C. Kim, S.H. Hahn, and F. Garcia-Godoy Effect of curing method and curing time on the microhardness and wear of pit and fissure sealants Dent Mater 18 2002 120 127
65. Friedman J, Inventor. Demetron Research Corp., Danbury, CT, assignee: Dental fiber optic light bundle with Uniform Taper. United States Patent 5,371,826; 1994.
66. Congress bans incandescent, bulbs 2007 World Net Daily [cited 2010 August 10]; Available from: http://www.wnd.com/?pageId=45156
67. A Mehl, R. Hickel, and K.H. Kunzelmann Physical properties and gap formation of light-cured composites with and without 'softstart-polymerization' J Dent 25 1997 321 330
68. N. Hofmann, T. Markert, B. Hugo, and B. Klaiber Effect of high intensity vs. soft-start halogen irradiation on light-cured resin-based composites. Part I. Temperature rise and polymerization shrinkage Am J Dent 16 2003 421 430
69. N. Hofmann, C. Siebrecht, B. Hugo, and B. Klaiber Influence of curing methods and materials on the marginal seal of class V composite restorations in vitro Oper Dent 28 2003 160 167
70. C.M. Amaral, A.K. de Castro, L.A. Pimenta, and G.M. Ambrosano Influence of resin composite polymerization techniques on microleakage and microhardness Quintessence Int 33 2002 685 689
71. C.M. Amaral, A.R. Peris, G.M. Ambrosano, and L.A. Pimenta Microleakage and gap formation of resin composite restorations polymerized with different techniques Am J Dent 17 2004 156 160
72. M.R. Bouschlicher, F.A. Rueggeberg, and D.B. Boyer Effect of stepped light intensity on polymerization force and conversion in a photoactivated composite J Esthet Dent 12 2000 23 32
73. M.R. Bouschlicher, and F.A. Rueggeberg Effect of ramped light intensity on polymerization force and conversion in a photoactivated composite J Esthet Dent 12 2000 328 339
74. A.U. Yap, M.S. Soh, and K.S. Siow Post-gel shrinkage with pulse activation and soft-start polymerization Oper Dent 27 2002 81 87
75. S.T. Hackman, R.M. Pohjola, and F.A. Rueggeberg Depths of cure and effect of shade using pulse-delay and continuous exposure photo-curing techniques Oper Dent 27 2002 593 599
76. A.U. Yap, M.S. Soh, and K.S. Siow Effectiveness of composite cure with pulse activation and soft-start polymerization Oper Dent 27 2002 44 49
77. R.L. Sakaguchi, and H.X. Berge Reduced light energy density decreases post-gel contraction while maintaining degree of conversion in composites J Dent 26 1998 695 700
78. N. Emami, K.J. Soderholm, and L.A. Berglund Effect of light power density variations on bulk curing properties of dental composites J Dent 31 2003 189 196
79. N. Hofmann, W. Denner, B. Hugo, and B. Klaiber The influence of plasma arc vs. halogen standard or soft-start irradiation on polymerization shrinkage kinetics of polymer matrix composites J Dent 31 2003 383 393
80. Gemunder E, Chi H-J, Inventors. Air Techniques, Inc., Hicksville, NY, assignee: Photo curing light system having modulated light intensity control. United States Patent 6,522,086; 2003.
81. M. Krames Light-emitting diode technology for solid-state lighting National academy of engineering: US frontiers of engineering symposium Irvine, CA, September 11 2009
82. G. Zorpette Blue chip Sci Am 283 2000 30 31
83. M. Craford, N. Holonyak, and F. Kish In pursuit of the ultimate lamp Sci Am 284 2001 62 67
84. F.A. Rueggeberg, J.S. Blalock, and R.S. Callan LED curing lights - what's new? Comp Cont Educ Dent 26 2005 581 590 586, 588
85. Melikechi N, Pradhan R, Inventors. Method for curing a dental composition using a light emitting diode patent 6,318,966 B1; 2001.
86. Kennedy J, Inventor. Portable LED photocuring device. United States Patent 5,420,768; 1995.
87. Kennedy J, Kayser R, Inventors. Portable light emitting diode apparatus with semiconductor emitter array. United States Patent 5,634,711; 1997.
88. Osterwalder J, Creamer A, Inventors. Apparatus for curing resin in dentistry. United States Patent 6,102,696; 2000.
89. Melikechi N, Pradhan R, Inventors. Photocuring device with axial array of light emitting diodes and method of curing. United States Patent US2002/01887545 A1; 2002.
90. F. Stahl, S.H. Ashworth, K.D. Jandt, and R.W. Mills Light-emitting diode (LED) polymerisation of dental composites: flexural properties and polymerisation potential Biomaterials 21 2000 1379 1385
91. W.J. Dunn, and A.C. Bush A comparison of polymerization by light-emitting diode and halogen-based light-curing units J Am Dent Assoc 133 2002 335 341
92. Boutoussov D, Cozean C, Inventors. PLS Liquidating, LLC, Aliso Viejo, CA, assignee: Optical Source and Method. United States Patent 6,439,888 B1; 2002.
93. A.C. Shortall How light source and product shade influence cure depth for a contemporary composite J Oral Rehabil 32 2005 906 911
94. A. Uhl, B.W. Sigusch, and K.D. Jandt Second generation LEDs for the polymerization of oral biomaterials Dent Mater 20 2004 80 87
95. Cao D, Inventor. Cao Group, Inc., assignee: Light for use in activating light-activated materials, the light having a plurality of light emitting semiconductor chips emitting light of differing peak wavelengths to provide a wide light spectrum profile. United States Patent US 2002/0190659 A1; 2002.
96. CRA. Curing Light-Resin Compatability Problems. CRA Newsletter; 2003: 1-2.
97. G.J. Christensen Curing restorative resin: a significant controversy J Am Dent Assoc 131 2000 1067 1069
98. G.J. Christensen The light-curing mania J Am Dent Assoc 135 2004 461 463
99. T. Burke, and S. Lucarotti Ask the experts: composite resin restoration longevity J Esthet Restor Dent 19 2007 183 184
100. R. Nomoto, J.F. McCabe, and S. Hirano Comparison of halogen, plasma and LED curing units Oper Dent 29 2004 287 294
101. E.M. Bruzell Roll, N. Jacobsen, and A. Hensten-Pettersen Health hazards associated with curing light in the dental clinic Clin Oral Invest 8 2004 113 117
102. R.B. Price, J. Fahey, and C.M. Felix Knoop microhardness mapping used to compare the efficacy of LED QTH and PAC curing lights Oper Dent 35 2010 58 68
103. A. Schattenberg, D. Lichtenberg, E. Stender, B. Willershausen, and C.P. Ernst Minimal exposure time of different LED-curing devices Dent Mater 24 2008 1043 1049
104. R. Nomoto, M. Asada, J.F. McCabe, and S. Hirano Light exposure required for optimum conversion of light activated resin systems Dent Mater 22 2006 1135 1142
105. A. Santini Current status of visible light activation units and the curing of light-activated resin-based composite materials Dent Update 37 2010 217 223 214-216, 218-220
106. M. Hannig, and B. Bott In-vitro pulp chamber temperature rise during composite resin polymerization with various light-curing sources Dent Mater 15 1999 275 281
107. F.A. Rueggeberg Precision of hand-held dental radiometers Quintessence Int 24 1993 391 396
108. E.K. Hansen, and E. Asmussen Reliability of three dental radiometers Scand J Dent Res 101 1993 115 119
109. F.A. Rueggeberg, M.A. Cole, S.W. Looney, A. Vickers, and E.J. Swift Comparison of manufacturer-recommended exposure durations with those determined using biaxial flexure strength and scraped composite thickness among a variety of light-curing units J Esthet Restor Dent 21 2009 43 61
110. R. Price, M. McLeod, and C. Felix Quantifying light energy delivered to a class I restoration J Can Dent Assoc 76 2009 a23
111. R.B. Price, C.M. Felix, and J.M. Whalen Factors affecting the energy delivered to simulated class I and class v preparations J Can Dent Assoc 76 2010 a94
112. C.L. Davidson, and A.J. de Gee Light-curing units, polymerization, and clinical implications J Adhes Dent 2 2000 167 173
113. R. Nomoto, K. Uchida, and T. Hirasawa Effect of light intensity on polymerization of light-cured composite resins Dent Mater J 13 1994 198 205
114. R. Nomoto Effect of light wavelength on polymerization of light-cured resins Dent Mater J 16 1997 60 73
115. L. Musanje, and B.W. Darvell Polymerization of resin composite restorative materials: exposure reciprocity Dent Mater 19 2003 531 541
116. A. Peutzfeldt, and E. Asmussen Resin composite properties and energy density of light cure J Dent Res 84 2005 659 662
117. E. Asmussen, and A. Peutzfeldt Influence of pulse-delay curing on softening of polymer structures J Dent Res 80 2001 1570 1573
118. D. Watts Kinetic mechanisms of visible-light-cured resins and resin-composites Dent Mater 9 1993 80 112 [Symposium: Setting Mechanisms of Dental Materials]
119. R.B. Price, and C.A. Felix Effect of delivering light in specific narrow bandwidths from 394 to 515 nm on the micro-hardness of resin composites Dent Mater 25 2009 899 908
120. H.W. Roberts, K.S. Vandewalle, D.W. Berzins, and D.G. Charlton Accuracy of LED and halogen radiometers using different light sources J Esthet Restor Dent 18 2006 214 223 discussion 223-214
121. R.B. Price, L. Ehrnford, P. Andreou, and C.A. Felix Comparison of quartz-tungsten-halogen, light-emitting diode, and plasma arc curing lights J Adhes Dent 5 2003 193 207
122. C.A. Felix, and R.B. Price The effect of distance from light source on light intensity from curing lights J Adhes Dent 5 2003 283 291
123. F.A. Rueggeberg An expert's buying guide for curing lights ADA professional product review vol. 4 2009 pp.13-16
124. R.B. Price, F.A. Rueggeberg, D. Labrie, and C.M. Felix Irradiance uniformity and distribution from dental light curing units J Esthet Restor Dent 22 2010 86 101
125. ISO. Standard 10650-1 dentistry - powered polymerization, activators 2004 International Organization for Standards Geneva
126. A. Patel Effect of thermopile height on ADA specification 48 exitance power value J Dent Res 89 Special Issue A 2010 487
127. H. Moseley, R. Strang, and K.W. Stephen An assessment of visible-light polymerizing sources J Oral Rehabil 13 1986 215 224
128. H. Arikawa, T. Kanie, K. Fujii, H. Takahashi, and S. Ban Effect of inhomogeneity of light from light curing units on the surface hardness of composite resin Dent Mater J 27 2008 21 28
129. K.S. Vandewalle, H.W. Roberts, and F.A. Rueggeberg Power distribution across the face of different light guides and its effect on composite surface microhardness J Esthet Restor Dent 20 2008 108 117 discussion 118
130. J.L. Ferracane, J.C. Mitchem, J.R. Condon, and R. Todd Wear and marginal breakdown of composites with various degrees of cure J Dent Res 76 1997 1508 1516
131. R. Price, F.A. Rueggeberg, D. Labrie, and C.A. Felix Irradiance differences in the violet (405 nm) and blue (460 nm) spectral ranges among dental light-curing units Esthet Restor Dent 22 2010 363 378
132. J.C. Neo, G.E. Denehy, and D.B. Boyer Effects of polymerization techniques on uniformity of cure of large-diameter, photo-initiated composite resin restorations J Am Dent Assoc 113 1986 905 909
133. F.A. Rueggeberg, R.B. Price, C.A. Felix, and M. Mutluay Effect of light tip movement during exposure on composite hardness J Dent Res 89 Special Issue A 2010 536
134. E. Asmussen, and A. Peutzfeldt Light-emitting diode curing: influence on selected properties of resin composites Quintessence Int 34 2003 71 75
135. HSE Non-ionising radiation - optical radiation 2010 HSE Information Services Caerphilly, England [cited 2010 August 10]; Available from: http://hse.gov.uk?radiation/nonionising/optical.htm
136. Health Protection Agency A non-binding guide to the artificial optical radiation directove 2006/25/EC 2006 Health Protection Agency Oxfordshire, England Available from: http://www.hse.gov.uk/radiation/nonionising/aor-guide. pdf
137. R. Pilo, D. Oelgiesser, and H.S. Cardash A survey of output intensity and potential for depth of cure among light-curing units in clinical use J Dent 27 1999 235 241
138. N. Barghi, D.E. Fischer, and T. Pham Revisiting the intensity output of curing lights in private dental offices Comp Cont Educ Dent 28 2007 380 384 quiz 385-386