LASER TECHNICIAN CERTIFICATION EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES || 100% GUARANTEED PASS <BRAND NEW VERSION>

LASER TECHNICIAN CERTIFICATION EXAM STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES || 100% GUARANTEED PASS &lt;BRAND NEW VERSION&gt; 1. Which is not a characteristic of a true laser? A) Coherent B) Broad Spectrum C) Collimated D) Monochromatic - ANSWER B) Broad Spectrum 2. How does light Interact with tissue? A) absorption B) reflection C) scattering D) transmission E) all of the above - ANSWER E) all of the above 3. Name three chromophores that are targeted by IPL/BBL A) water, melanin found in hair, oxyhemoglobin B) melanin, tattoo ink, porphyrins C) melanin, oxyhemoglobin, porphyrins D) oxyhemoglobin, water, porphyrins - ANSWER C) melanin, oxyhemoglobin, porphyrins 4. What is not a factor affecting depth of penetration A) spot size B) wavelength C) pulse width D) power - ANSWER C) pulse width 5. What is a factor in determining skin type on the fitz scale A) hair color B) skin color C) ethnic background D) sun sensitivity E) all of the above - ANSWER E) all of the above 6. The thermal relaxation time of the epidermis is estimated at about - ANSWER 3-10 ms depending on thickness 7. Wavelengths under ____ are strongly absorbed by blood micro-vessels and therefore cannot be used for hair reduction - ANSWER 600nm 8. Wavelengths above ____ are strongly absorbed by water is tissue - ANSWER 1100 nm 9. Wavelengths bad for dark skin - ANSWER 640-694 nm 10. Recommended treatments for Fitz 1-3 - ANSWER 6 11. Recommended treatments for fitz 4-6 - ANSWER 7-10 12. The risk of side effects will increase with higher ____ settings - ANSWER Fluence 13. Hertz - ANSWER Number of pulses per second 14. Spray tan or bronzers should be avoided for ______ prior to treatment - ANSWER 3 weeks 15. Laser is an acronym for - ANSWER Ligh amplification stimulated by the emission of radiation 16. In the early 1900s ____ described the process of stimulated emission, the basis for laser physics - ANSWER Albert Einstein 17. True or false, atoms consist of negatively charged electrons that revolve around a positively charged nucleus in a specific orbit or shells - ANSWER True 18. An atom with an electron located anywhere but its lowest orbit is said to be ____ and has more than its minimum amount of energy - ANSWER Excited 19. It can be raised to one of its ____ states by either thermal excitation or stimulated absorption - ANSWER Excited 20. Spontaneous emissions of radiation is all of the following except: A) random emission B) thermal excitation C) multiple wavelengths D) coherent light E) independent photons - ANSWER D) coherent light 21. True or false, in contrast to spontaneous emission, stimulated emission is organized and of the same wavelength - ANSWER True 22. An exited atom can be brought down to its ground state by ___ it with a photon having the same ____ as the photon to be emitted - ANSWER stimulating, frequency 23. A true laser is an example of a light created by the .... - ANSWER Stimulated emission of radiation 24. Four laser mediums - ANSWER Liquid, electronic, gas, solid 25. Once there are enough atoms within the medium that have reached an ___ excited state and have their upper levels filled, a population inversion is said to have occured - ANSWER Excited 26. True or false, without a population inverse, the chance of stimulated emission is high - ANSWER False 27. Identical photons begin to multiply or amplify as they reflect back and forth between two... - ANSWER Mirrors 28. Mirrors are located at either end of the lasing device, one mirror is ____ to allow light to escape - ANSWER Semi-transparent 29. Since the photons are identical, one pure wavelength of light will be produced which is ____ ( a pure color) - ANSWER Monochromatic 30. Light escaped out of the semi-transparent mirror creating a ___ beam of light (locked in a phase) - ANSWER Coherent 31. A true laser beam is... - ANSWER Coherent, collimated, monochromatic 32. Radiation refers to the _____ of energy from one area to another - ANSWER Transfer 33. A ___ form of radiation will supply enough energy to move an electron to a higher energy level exciting the atom - ANSWER Non-ionizing 34. A __ form of radiation has enough power to remove an electron from an atom or molecule, this form can cause cell - ANSWER Ionizing, mutation 35. Electromagnetic radiation waves are described as ... - ANSWER Wavelength, frequency, amplitude, velocity 36. What are the three properties of lasers that are not shared by intense pulsed light (IPL)? - ANSWER 1. Lasers are monochromatic (IPL is polychromatic) 2. Lasers have coherent energy (IPL is incoherent) 3. Lasers' energy is collimated (IPL is divergent) 37. What does it mean that lasers are monochromatic and IPL is polychromatic? - ANSWER Laser light contains 1 wavelength and 1 color, which usually treats one chromophore. IPL targets multiple chromophores with visible and infrared light 38. What does it mean that lasers have coherent energy and IPL is incoherent? - ANSWER Laser light travels as a single unit of energy which is precise and able to be manipulated. IPL can travel in different directions causing forward and backward scatter 39. What does it mean that lasers energy is collimated and IPL is divergent? - ANSWER Laser photons are parallel, the beam has minimal divergence helping laser light to remain in phase for extended distances. IPL has forward and backward scatter 40. What are the four laser tissue interactions? - ANSWER 1. Absorption 2. Reflection 3. Transmission 4. Scattering 41. What is selective photo thermolysis? - ANSWER Targeting a specific chromophore with precise wavelength of light and accurate duration of pulse for adequate thermal energy (staying within TRT) to chromophore and maintaining minimal to no damage to surrounding area 42. What is a LED device? - ANSWER Light emitting diode devices that are non-ablative, non-thermal and stimulate Photo modulation in cells which triggers a bio chemical response that speeds up cellular metabolism. This can help suppress aging, speed healing, and reduce inflammation 43. Define the two types of radio frequency devices. - ANSWER Monopolar and bipolar. Monopolar devices use electrical energy which creates resistance that is converted to heat and exits body through dispersing electrode. Bipolar have electrical current contained within handpiece by having opposite charges on opposite ends. 44. What are the two principal aging processes? - ANSWER Extrinsic aging, intrinsic ageing. Intrinsic ageing is genetics and gravity, extrinsic ageing this portion for which we are responsible and external factors 45. What are the two main layers of the skin? - ANSWER Epidermis, dermis 46. What are GAGs? - ANSWER glycosaminoglycans which are polysaccharide chains that can bind water up to 1000x their weight. GAG's attract moisture, aged skin appears to have less GAG's 47. What is NMF? - ANSWER Natural moisturizing factors, found in upper skin layer (stratum corneum) allowing cells to bind with water. NMF produces soft, flexible skin 48. Why is TEWL important? - ANSWER Transepidermal water loss is important because this water loss is through evaporation through our skin and can be replaced with water intake 49. IPLs (Intense Pulsed Light Systems) fall under the same ANSI requirements as Laser devices. - ANSWER False 50. Laser Safety eyewear are guaranteed to protect the wearer from even direct laser impacts into their eyes. - ANSWER False 51. Which is a non-beam laser hazard? - ANSWER Laser plume 52. The Nominal Hazard Zone (NHZ) around the laser is: - ANSWER The area where skin or eye injury may result from the laser during normal use 53. Which Optical Density (OD) of safety glasses offers the highest degree of protection from a Nd:Yag laser? - ANSWER 7.0 54. Surgical or Aesthetic laser systems which can vaporize or photocoagulate tissues are classified by ANSI as: - ANSWER Class IV Systems 55. Which organization can levy large fines against an institution/office in the U.S. for violation of laser safety standards? - ANSWER OSHA Occupational Safety & Health Administration 56. Laser Safety eyewear must be worn in the: - ANSWER Nominal Hazard Zone (NHZ) 57. The laser which presents a burn hazard only to the surface of the eye and not to the retina is: - ANSWER CO2 58. The Laser Treatment Controlled Area (LTCA) is: - ANSWER Limited to access by authorized personnel trained in laser safety, The entire room where the laser is operated 59. Laser Safety eyewear should: - ANSWER Be labeled with the wavelength and optical density (OD) for which they afford protection, Be worn within the NHZ, Be available upon entry to the LTCA 60. For those U.S. States beginning to impose requirements on nonphysician operators to obtain licensing to perform cosmetic laser procedures, the most common entry level requirement is: - ANSWER Documented and accredited training in laser theory and aesthetic applications and safety 61. Notwithstanding regulations, IPLs (Intense Pulsed Light Systems) may be safely used for patient treatment without any eye protection for either the patient or operator - ANSWER False 62. Who determines licensing or authorization to perform laser hair removal by non-physicians in the U.S.? - ANSWER Each State's Medical Board or Legislature 63. Photon-induced Photoacoustic Streaming or PIPS creates thermal damage. Also, It travels 3-dimensionally wherever there is fluid. a. The first statement is true. The second statement is true. b. The first statement is true. The second statement is false. c. The first statement is false. The second statement is false d. The first statement is false. The second statement is true. - ANSWER d. The first statement is false. The second statement is true. 64. A pulpotomy and stainless steel crown can be done without anesthetic when completed with a laser. A frenectomy done with a laser requires sutures. a. True, True b. True, False c. False, False d. False, True - ANSWER b. True, False 65. Using a soft tissue laser for a frenectomy is a better option for your patient because a. There's a minimal bleeding if a laser is used b. Sutures can be placed immediately if a laser is used c. The patient will heal faster if a laser is used d. Both A & C - ANSWER d. Both A & C 66. An orthodontist may refer a patient to a periodontist that uses a laser for: a. Uncovering of unerupted teeth b. Extraction of erupted supernumerary teeth c. Bracket removal d. All of the above - ANSWER a. Uncovering of unerupted teeth (Halket would do all of these as a periodontist but mainly A & B) 67. The AAPD recognizes the use of lasers as a(n) _______ and ________ method of providing soft and hard tissue dental procedures for infants, children, adolescents, and persons with special care needs a. Mandatory, standard b. Alternative, complementary c. Professional, skilled d. Absolute, required - ANSWER b. Alternative, complementary 68. All of the following can be done using an Er:Yag laser EXCEPT a. Permanent tooth uncovering b. Infant lingual frenectomy c. Debonding ceramic brackets d. Weld a metal arm on an orthodontic appliance → Nd:YAG does this - ANSWER d. Weld a metal arm on an orthodontic appliance → Nd:YAG does this 69. An 8 year old patient comes into your office for the first time. The mother explains that the child has had terrible anxiety when it comes to visiting the dentist and will put up a fight as soon as she sees the needle for the local anesthesia. What would you recommend? a. Hide the needle from the child and do not warn them before injecting b. Turn down the patient, as there is no way you can help solve their concerns c. Let the mother know that laser treatment reduces the need of injected local anesthesia d. Ensure the mother and child that you are a skilled clinician, so the injection won't even hurt - ANSWER c. Let the mother know that laser treatment reduces the need of injected local anesthesia 70. Which of these is NOT one of the general indications that photobiomodulation is typically used for? a. Promotion of wound healing b. Tissue regeneration c. Direct caries removal d. Benefits immune system health - ANSWER c. Direct caries removal 71. Photobiomodulation: a. Increases ATP and reduces oxidative stress b. Decreases ATP and reduces o xidative stress c. Increases ATP and increases o xidative stress d. Decreases ATP and increases o xidative stress - ANSWER a. Increases ATP and reduces oxidative stress 72. Photobiomodulation is inhibitory for the following processes, EXCEPT: (this is different from the slide on the video). a. Pain b. Tissue regeneration c. Inflammation d. Aberrant immune responses - ANSWER b. Tissue regeneration