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Tested depth of cure and curing lamps

Depth of cure measurements were performed at NIOM according to ISO 4049. Test materials were Tetric EvoCeram (Ivoclar Vivadent) and Filtek Z250 (3M ESPE) colour A3.

These composites were cured with 30 LED lamps using various curing methods and times. The data were collected from 2005 to 2011. Depth of cure and lamp measurement procedures are provided here.

Funding: The testing was performed on assignment of the Swedish National Board on Health and Welfare, Stockholm, Sweden. The data (2005 to 2007) was previously published as a report (2008-126-8).

Table 2: LED curing lamp spectral characteristics: Measured and according to manufacturers

The measured light guide diameters are given in Table 2.

Comments Table 2: According to the curing lamp standard ISO 10650-2, the measured irradiance value should be no less than that given by manufacturer. Measured irradiance values (± 9% measurement uncertainty) that are higher or lower than the corresponding values given by the manufacturer are indicated. Light guide diameters given by the manufacturers are presented in Table 1.

Lamp
Measured diameter of light guide [mm]
 
Manufacturers' given values
 
NOIM's measured values
Light intensity (irradiance)
[mW/cm2]
Wavelength-range
[nm]
Light intensity (irradiance)
[mW/cm2] in the wavelength range of 400 - 515 nm
Wavelength
range [nm]
> 2 mW/cm2
Wavelength [nm] at light intensity maximum
bluephase7.5HI P: 1100
LO P: 650
Soft Start: 0 -> 650 (5 s) then 1100
430 - 4901398 (> than stated)

426 - 499457
bluephase 16i7
11.9
1600 ± 100
(A)
430 - 490
430 - 490
2159 (> than stated)
877
423 - 496
427 - 486
451
451
bluephase 20i7.02000 - 2200
Turbo: 2000
High Power: 1200
Low Power: 650
Soft Start: 650 (5 s) - 1200
380 - 515

1560 (> than stated)

394 - 499460
bluephase G29High: 1200
Low: 650
380 - 5151294
397 - 489
454
Celalux7Max. 1000450 - 4801096440 - 500467
Celalux 27.0900 to 2000 (± 10%)420 - 4801050420 - 482448
Coltolux LED9.0> 1000824 (< than stated)432 - 494458
Demetron A207.5Max. 1100450 - 4701390 (> than stated)436 - 506466
Demi L.E.D.71100450 - 4701497 (> than stated)431 - 505464
Demi Plus07.51100 (Baseline)450 - 4701579423 - 492452
DioPower lighthead: DioCure4708?
1400450 - 490453 (< than stated)
435 - 500463
DioPower lighthead: DioCure4704?1356440 - 490463
Elipar Freelight 27.7approx. 1000430 - 480831 (< than stated)435 - 495455
Elipar S108.51200 (± 10 %) in the wavelength range of 400 - 515430 - 480
(Max.
455 ± 10)
1307427 - 490454
FlashLite 14018? 1100460 - 480790 (< than stated)440 - 500466
FlashMax(B)
with cover: 7
4000 - 5000Not stated(B)
with cover:
3860
(B)
with cover:
424 - 517
460
without cover: 6without cover:
4600
without cover:
423 - 519
FlashSoft(B)
with cover: 7
1000 - 1200Not stated(B)
with cover:
1408 (> than stated)
(B)
with cover:
429 - 506
461
without cover: 6without cover:
2213 (> than stated)
without cover: 426 - 512
L.E.Demetron II7800 - 1400450 - 4701583 (> than stated)427 - 493454
10.5800 - 1400450 - 470635 (< than stated)427 - 493454
Ledex WL-0707.01000 - 1200440 - 480
(Max. 460)
1043432 - 496458
miniL.E.D71250 - 2000
(depending on light guide)
420 - 4801590423 - 488449
Pencure VL-791000420 - 480751 (< than stated)430 - 483452
Radii Plus7.51500440 - 480
(Max. 460)
1139 (< than stated)432 - 492457
Smartlite iQ28Not stated450 - 475720444 - 501467
Smartlite PS9.0Mean: 950450 - 490
(Max. 460)
642 (< than stated)439 - 499465
Starlight pro7.0Not stated440 - 480
(Max. 460)
1124418 - 476443
Starlight sler7.0Not stated440 - 480
(Max. 460)
1331428 - 493456
the Cure Cordless7.7High: 1000450 - 4901299 (> than stated)425 - 487452
Low: 500
T LED7.0Slow: 1000430 - 490
(Max. 460)
428 - 485453
Standard: 1400958 (< than stated)
Fast: 2200
Rapid restoration: 500 (5 s) - (5 s) -2200 (5 s)
Long restoration: 500 (5 s) - (10 s) - 1050 - 1800 (10 s)
Translux Power Blue7Not stated440 - 480
(Max. 460)
709427 - 478447
UltraLume LED511.1> 800370 - 500712 (< than stated)400 - 410405
430 - 490457
Valo9.8Standard: 1000395 - 4801003396 - 496462
High: 1400
"Plasma": 4500 (approx.)

― Not measured

(A) According to the lamp manufacturer, use of the “parallel-walled” optic light guide will reduce the light intensity with about 50% compared with the 7 mm diameter light guide.

(B) Irradiance was measured with or without the cover part and without the disposable tip attached. The disposable tip will reduce the irradiance.