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Click to Enlarge Klas®-D  Download Data Sheet
Dental LLLT Unit
Red Laser 660nm/50 ~ 100mW
Infrared Laser 808nm/110mW

There are 230 positive studies done by 81 universities from 37 different countries showing from 80 to 95% success using Low Level Laser Therapy (LLLT) on over 24 different dental procedures.

Klas-D is developed from "Laser Biostimulation" theory and "Low Level Laser Therapy (LLLT)" medical approval. This newest and patented device is made using the combination of modern laser technology and advanced integrated-circuit control.

Klas-D is the most scientifically advanced and effective LLLT device for dental application.

Klas-D is specially designed and clinically proven for dental therapies include:
Dentinal Hypersensitivity
Herpes Simplex
Postoperative Pain Reduction

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  • Features
  • Specifications
  • Accessories
  • Model No.
  • Treatment Time

Constant laser intensity is maintained by:

Ergonomically shaped and high transmission fiber rod to guide the laser beam evenly irradiate the treating area.
Innovative optics design leads to the maximum output laser power.
Advanced integrated circuit designed by Konftec to maintain the specific power output even the batteries are in low capacity.
Safe   Konftec's integrated circuit design with full protection of:
EDS (Electrostatic Discharge)
short-term reverse battery connection
Convenient   Outstanding autoclavability of fiber rod
The excellent transmission characteristics of fiber rod remains unaffected even after being autoclaved several thousand times.
Ability of standing up to repeated machine washing.
Easy to Use   Vandal resistant stainless steel pushbutton switch for the simplest operation, can easily be used by practitioner.
Powered by three alkaline AAA batteries which provide Klas-D50 approximately 9 hours continuous operation.
Operation Environment  660nm: 0 ~ 60 °C (32 ~ 140 °F); 10 ~ 95%RH (Non-condensing)
808nm: 0 ~ 50 °C (32 ~ 122 °F); 10 ~ 95%RH (Non-condensing)
Power Supply  3 x AAA or Rechargeable Battery
Laser Material  Semiconductor Laser Diode
Laser Wavelength 
… Output Power 
660nm…50mW or 100mW
The measured output power data shown in the delivered test report indicates the power from the laser diode.
Laser Beam Spot Size  0.5 cm²
Housing Material  Stainless Steel
Switch  Vandal Resistant Pushbutton; Stainless Steel Housing and Bezel
Enclosure Protection  IP54 (NEMA 4)
Protection against dust
Protection against water spray
Dimensions  188(L) x Ø26 mm; 7.4(L) x Ø1 in.
Weight  230 g (8.1 ounce), Includes Batteries
 Verification  EMC Directive 93/42/EEC
(Operation Environment: Medical Electrical Equipment)
Standard Applied: IEC 60601-1 and EC 60601-1-2
Medical Device Certificate  ISO 13485: 2003
Aluminum Case WC-121
Dimensions 254(L) x 164(W) x 50(H) mm
10(L) x 6.6(W) x 2(H) in.
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Weight 0.4 Kg (0.9 Lb)
(Extra Quantity)
Fiber Rod WF-422
The fiber rod has high resistance to chemical attacks and is perfectly compatible with the strict hygiene standards called for in dental surgery.
The excellent transmission of the fiber rod remains at a consistent high level, even after being subjected to
several thousand autoclave and machine washing cycles.
Fiber Rod
Rod Material  Multi Core Glass Rod
Diameter  8mm; Bent
Transmission Ratio  > 85% (for wavelength 405 ~ 980nm)
Biocompatibility  Certification: DIN ISO 10993-5
Autoclaving Stability  Test conditions: 134°C /20 minutes cycle
Ferrule  Stainless Steel
Model No. Picture Laser Wavelength Output Power Power Density
Battery Operation Time
w/o Fiber Rod w/ Fiber Rod
Klas-D50 Click to Enlarge 660nm 50mW 40mW 0.08 9 Class IIIa
Klas-D61 100mW 80mW 0.16 5 Class IIIa
Klas-D81 Click to Enlarge 808nm 110mW 90mW 0.18 4 Class IIIb
   Laser Effective Area = Laser Beam Spot Size…0.5 cm²

  Treatment Time (second) = Dose (J/cm3) x 1000 x Laser Beam Spot Size (cm²)
End Power (mW) x Energy Loss Factor (/cm)

Treatment Time Calculation Table- Klas series
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    ISO 13485
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Watch Video

Does laser light penetrate through clothes?
Creator: Dr. Jan Tunér and Dr. Lars Hode (time: 3:20)
Low Level Lasers in Dentistry
Dentistry Therapy Protocol
Klas Batteries Installation Guide
Klas-D50; -D61
Meets FDA (CDRH) Class IIIa Safety Regulation
Treatment Time Calculation Table
- Klas series
Download PDF File Klas-D
User's Guide
  Download PDF File LLLT Dental Laser Comparison Table  
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