Lasers range from compact soft tissue diodes that fit on a counter to all-tissue systems that cost as much as a CBCT. They are also one of the most misunderstood categories in dental equipment. Buyers compare wattage and price when the more important questions are wavelength, delivery system, consumable costs, training, service support and the safety program the office must run.
This guide explains the main dental laser types, which practices use which, day-to-day operation, maintenance, troubleshooting, the regulatory and safety framework (FDA, ANSI Z136.3, state rules), and how to approach new and used purchases. It is equipment and business education. Clinical indications, settings and technique come from training and the manufacturer's instructions for use (IFU).
Key takeaways
- Wavelength determines tissue interaction. Diodes (roughly 445 to 980 nm) are soft tissue lasers. Erbium lasers (2,780 and 2,940 nm) and 9,300 nm CO2 lasers can treat hard and soft tissue. 10,600 nm CO2 and Nd:YAG (1,064 nm) are used mainly on soft tissue.
- FDA regulates lasers both as radiation-emitting products (21 CFR 1040.10 and 1040.11) and as medical devices, generally cleared through 510(k).
- ANSI Z136.3 (current edition 2024) is the consensus standard for health care laser safety. It calls for a laser safety officer and a hazard analysis for Class 3B and Class 4 lasers, which includes most surgical dental lasers.
- Protective eyewear must be rated for the specific wavelength. Glasses for a diode do not protect against an erbium or CO2 laser.
- Whether hygienists may use lasers, and for what, varies by state. A few states prohibit it and many regulations are silent.
- For used lasers, service availability, fiber and tip costs, and software or license transfer can matter more than the purchase price.
What a dental laser does and how it works
A laser produces light at a single wavelength (or a small set of wavelengths). When that light reaches tissue, it is absorbed, scattered, reflected or transmitted. What it does depends on which molecules in the tissue absorb that wavelength. Water, hydroxyapatite, hemoglobin and melanin all absorb differently across the spectrum, so a wavelength well absorbed by water behaves very differently from one absorbed mostly by pigment.
- Diode lasers emit in the visible or near-infrared range. Common dental diodes use about 810, 940 or 980 nm; some newer units use 445 nm blue light. They are absorbed by pigment and hemoglobin and are used on soft tissue, typically in contact mode with a fiber tip. Much of the cutting effect comes from a heated tip.
- Erbium lasers (Er:YAG at 2,940 nm and Er,Cr:YSGG at 2,780 nm) are very strongly absorbed by water. With a water spray they ablate enamel, dentin and bone as well as soft tissue.
- CO2 lasers at 10,600 nm are well absorbed by water and have long been used for soft tissue. A 9,300 nm CO2 wavelength, used by Convergent Dental's Solea, is well absorbed by hydroxyapatite and is marketed for hard and soft tissue.
- Nd:YAG lasers (1,064 nm) are near-infrared soft tissue lasers used notably in periodontal protocols; Millennium Dental Technologies' PerioLase MVP-7 is the best known dental example.
Parts you should know
- Console: the laser source, power supply, cooling and controls.
- Delivery system: an optical fiber (diodes, Nd:YAG), a fiber or waveguide, or an articulated arm or hollow waveguide (some erbium and CO2 systems).
- Handpiece and tips: tips may be single-use (many diodes use disposable pre-initiated tips) or reusable and wear over time (erbium sapphire or quartz tips).
- Water and air supply: for hard tissue lasers, a spray system fed by a reservoir or the unit's lines.
- Foot pedal: wired or wireless.
- Key switch or code, emergency stop, and interlock connector: safety controls required on higher-class lasers.
- Protective eyewear: labeled with the wavelength and optical density it covers.
Which type does your practice need?
| Type | Wavelength | Tissue | Typical buyer | Cost and upkeep profile |
|---|---|---|---|---|
| Diode | About 445, 810, 940, 980 nm | Soft tissue | General practices, hygiene-heavy practices, ortho | Lowest price; ongoing tip or fiber cost; simple service |
| Er:YAG | 2,940 nm | Hard and soft | Restorative and surgical practices wanting all-tissue capability | High price; handpiece and tip wear; service contracts common |
| Er,Cr:YSGG | 2,780 nm | Hard and soft | Same as above | High price; tip wear; service dependency on one manufacturer |
| CO2 (9,300 nm) | 9,300 nm | Hard and soft | High-volume restorative practices | Among the highest prices; manufacturer service important |
| CO2 (10,600 nm) | 10,600 nm | Soft tissue | Surgical and soft tissue users | Varies by generation; older units on used market |
| Nd:YAG | 1,064 nm | Soft tissue (periodontal protocols) | Periodontists and perio-focused GPs | High price; tied to training programs |
| Dual-wavelength systems | For example Er:YAG plus Nd:YAG | Hard and soft | Practices wanting broad indications | Highest complexity and price |
Decision guide
- You mainly want troughing, frenectomies, gingival contouring, and hygiene-adjunct uses: a diode. Compare it with an electrosurgery unit, which is cheaper but has its own cautions.
- You want to prepare teeth or treat bone: an erbium or 9,300 nm CO2 system. Build a realistic production model before buying: which procedures, how many per month, what fee changes, and what chair time is saved. Treat any vendor ROI model as a sales document.
- Periodontal practice using a specific protocol: the protocol usually dictates the laser, as with Nd:YAG and LANAP training.
- Space and utilities: diodes need an outlet. Larger systems need floor space, a dedicated outlet per the manufacturer's site requirements, and sometimes water and air connections. Get the installation requirements in writing before you buy.
- Staff: someone must serve as laser safety officer and keep training and logs current.
How to use it: daily operation
General steps only. The laser's IFU and your office laser safety procedures govern.
Start of day
- Confirm the laser is stored secured (key removed or code-locked) when not in use.
- Inspect the console, fiber or arm, handpiece and foot pedal for damage. Check fibers for kinks or cracks along their length.
- Check wavelength-specific eyewear for the operator, assistant and patient: labels legible, lenses not scratched, frames intact.
- For hard tissue lasers, fill the water reservoir with the water type the IFU specifies and run any purge or test cycle.
- Run any self-test the IFU requires and confirm there are no error codes.
Per patient
- Post the laser warning sign at the entry to the treatment area and close the door if that is part of your controlled area procedure.
- Remove or cover reflective objects near the field where practical.
- Give everyone in the room, including the patient, the correct eyewear before the laser is armed.
- Fit a new or sterilized tip; initiate or cleave diode fibers as the IFU directs.
- Select the procedure preset or settings, and have the operator confirm them before arming.
- Keep the laser in standby whenever it is not actively being used, and position high-volume evacuation to capture plume.
Between patients and end of day
- Place the laser in standby or off; remove the key or lock it.
- Discard single-use tips; clean and sterilize reusable handpieces and tips per IFU.
- Clean and disinfect the console and cables with approved disinfectants.
- Clean eyewear per the manufacturer's instructions.
- Record use in the laser log if your safety program keeps one.
Maintenance schedule
| Task | Frequency | Who | Notes |
|---|---|---|---|
| Inspect fiber, arm, handpiece, pedal | Daily | Assistant | Remove damaged fibers from use |
| Inspect and clean eyewear | Daily | Assistant | Replace scratched or unlabeled eyewear |
| Clean and sterilize handpieces and reusable tips | After each patient | Sterilization staff | Follow cycle limits; tips wear and lose efficiency |
| Change or cleave fiber, replace single-use tips | Per patient or per IFU | Operator or assistant | Budget this as a per-procedure cost |
| Water reservoir and spray line care (hard tissue lasers) | Daily to weekly per IFU | Assistant | Use the water and cleaners the IFU specifies |
| Check handpiece windows and mirrors (where applicable) | Weekly or per IFU | Trained staff | Dirty optics reduce output and can damage components |
| Laser safety program review | Annually | Laser safety officer | Update hazard analysis, training records, signage and eyewear inventory |
| Calibration and preventive maintenance | Per manufacturer, often annually | Manufacturer or authorized service | Output verification requires proper test equipment |
| Internal repairs, source or lamp replacement | As needed | Factory-trained technician only | Class 4 lasers carry high voltage and optical hazards |
Troubleshooting
| Symptom | Likely causes | What to try | When to call a technician |
|---|---|---|---|
| Laser will not arm | Key or code, interlock connector open, emergency stop pressed, door interlock | Check key, interlock plug and emergency stop per IFU | If all are correct and it still will not arm |
| Weak or inconsistent cutting (diode) | Tip not initiated or damaged, fiber end dirty or broken, wrong preset | Replace tip or re-cleave fiber, confirm settings | If output stays low with new tips |
| Weak cutting (erbium or CO2) | Worn tip, dirty handpiece window, water or air settings, low output | Replace tip, clean window per IFU, check spray | If output remains low; calibration may be due |
| No water spray | Empty reservoir, clogged line, pinched tubing | Refill, check tubing, run purge | If lines stay blocked |
| Fiber breaks repeatedly | Sharp bends, pedal pressed with fiber kinked, handling | Review fiber handling and routing | If breaks continue with correct handling |
| Aiming beam missing | Fiber damage, dirty optics, aiming source failure | Replace tip or fiber, clean optics per IFU | If aiming beam still missing |
| Error code or overheating warning | Cooling issue, blocked vents, internal fault | Clear vents, allow cool-down, follow the IFU for the code | Any repeating code or service code |
| Wireless pedal not responding | Battery, pairing, interference | Replace battery, re-pair per IFU | If pairing fails with a fresh battery |
| Unexpected tissue effect or patient discomfort | Settings, technique, wrong preset | Stop and review settings | If a device fault is suspected, stop using it and contact the manufacturer |
Safety and compliance
FDA
FDA regulates lasers under the radiation-emitting product performance standards in 21 CFR 1040.10 and 1040.11, which define laser classes and require labeling and safety features. FDA's laser products page explains that medical lasers must also meet medical device requirements, typically premarket notification (510(k)). Cleared indications matter: a laser is cleared for specific uses, and marketing claims outside those uses are a red flag.
ANSI Z136.3 and the laser safety officer
ANSI Z136.3, published by the Laser Institute of America, is the American National Standard for the safe use of lasers in health care, including medical and dental offices. The current edition is 2024. For Class 3B and Class 4 lasers, it calls for a laser safety officer (LSO) who conducts a hazard analysis, verifies protective eyewear and barriers, and oversees training and procedures. The 2024 edition also clarifies that a third-party laser provider cannot replace an LSO or a formal safety program. In a dental office the LSO is often the dentist or a trained team member.
A basic office laser safety program usually covers: the nominal hazard zone (the area where exposure could exceed safe limits), controlled-area signage, eyewear with the correct wavelength and optical density for each laser, key control, written procedures, training records, plume control and incident reporting. OSHA does not have a laser-specific standard for health care, but it can cite general duty and PPE requirements, and OSHA's plume page recommends local smoke evacuation.
State rules
- Registration: some states regulate lasers through their radiation control programs. Texas, for example, requires a certificate of registration and a designated LSO for Class 3B and Class 4 lasers under 25 Texas Administrative Code 289.301. Check your state.
- Hygienist and assistant scope: rules vary widely. A January 2025 summary by the Academy of Laser Dentistry counted most jurisdictions allowing some hygienist laser use under conditions, four prohibiting it, and roughly 15 with no explicit rule. Where allowed, uses are often limited to non-cutting procedures and require specific training hours and supervision. Confirm with your state board before scheduling.
- Training: manufacturers, the Academy of Laser Dentistry and continuing education providers offer courses; some states specify minimum hours. Keep certificates in the personnel file.
Fire, oxygen and infection control
Class 4 lasers can ignite materials, especially in oxygen-enriched environments. Coordinate laser use with nitrous oxide and supplemental oxygen according to the IFU and your fire safety procedures; NFPA 99 addresses fire and medical gas risk in health care settings, adopted differently by state and local authorities. For infection control, handpieces and reusable tips are processed per IFU and CDC guidance; hard tissue lasers that use water spray should follow the manufacturer's water quality instructions and your waterline program.
Buying new vs. used
Lasers depreciate quickly, which makes used units tempting. The catch is that a laser is only as good as its service support. Before buying, answer three questions: who will service this exact model, what does a year of consumables cost, and can the software, warranty and training transfer to you? The used laser market guide goes deeper on resale values.
Manufacturer changes matter. BIOLASE, maker of Waterlase and Epic lasers, filed for Chapter 11 in October 2024. After a court-supervised auction, its assets were acquired by MegaGen Implant, according to 2025 trade press reports. If you are considering a used BIOLASE unit, confirm current service, parts and software support directly with the company before buying. The same diligence applies to any model whose maker has been acquired or has discontinued the line; Ultradent, for example, lists the Gemini EVO as unavailable and points buyers to the Gemini Nova.
Used laser inspection checklist
- Exact model, wavelength, serial number and manufacture date confirmed
- Manufacturer or authorized service confirms the unit is serviceable and not flagged as stolen or reported lost
- Service history and last calibration or preventive maintenance record
- Output verified by the manufacturer or an authorized technician with proper test equipment
- Pulse or hour count, flashlamp or source life (for lasers that report it)
- Fiber, arm or waveguide inspected for damage; spare fibers or tips included
- All handpieces present and functioning; ask for replacement cost of each
- Wavelength-specific eyewear included, or budget for new sets
- Key, interlock connector, foot pedal and power cord included
- Software version, any license or activation, and transfer fee confirmed in writing
- Training availability for new owners and any certification requirement for warranty or support
Red flags. No service history on a hard tissue laser. A seller who cannot demonstrate firing into a power meter or target. Missing key or interlock plug. Proprietary tips no longer sold. "Software locked, needs reactivation" with no quote from the manufacturer. Eyewear that does not list the laser's wavelength. Imported units with no FDA clearance information.
Rough price ranges and ongoing costs
Rough ranges that vary widely by model, generation, condition, region and year. Used figures reflect the range of reseller listings seen in 2026, not appraisals.
| Category | New (rough) | Used (rough) | Ongoing costs to budget |
|---|---|---|---|
| Soft tissue diode | A few thousand to around $10,000 | Often under $1,000 (older, as-is) to about $5,000 | Single-use tips or fiber, eyewear, occasional handpiece |
| Erbium all-tissue | Tens of thousands to over $100,000 | Often under $10,000 for older units to $30,000 or more for recent ones | Tips, handpieces, service contract, calibration |
| 9,300 nm CO2 | Among the most expensive dental lasers | Recent reseller listings for earlier generations ranged from about $10,000 to $30,000 | Service contract, handpiece and consumables, software |
| Nd:YAG (periodontal) | Tens of thousands, often bundled with training | Varies widely | Fiber, training and protocol costs |
Lifespan varies: diodes are often replaced for newer features after 5 to 10 years; larger systems can run longer with service, but support usually ends before the hardware does. Financing and tax treatment can change the math; see Section 179 and leasing vs. financing.
Brands and models you will see
Examples include:
- Diodes: Ultradent Gemini and Gemini Nova (810 and 980 nm), BIOLASE Epic series, AMD Lasers Picasso, Dentsply Sirona SiroLaser Advance and SiroLaser Blue, and CAO Group Precise lasers.
- Erbium: BIOLASE Waterlase (Er,Cr:YSGG, including Waterlase iPlus) and Fotona LightWalker (Er:YAG combined with Nd:YAG).
- CO2: Convergent Dental Solea (9,300 nm), sold in several generations, and older 10,600 nm soft tissue units on the used market.
- Nd:YAG: Millennium Dental Technologies PerioLase MVP-7.
Related guides
A laser decision is mostly a practice economics and safety decision. These pages help frame both:
- Dental lasers on the used market
- Dental electrosurgery units, the lower-cost soft tissue alternative
- Air polishers and prophy equipment for hygiene department planning
- Is your hygiene department profitable?
- Buying used equipment online safely and the marketplace
Always follow the manufacturer's instructions for use (IFU) for your specific model. Repairs involving electrical, pressure vessel, radiation, or gas line work belong with a qualified technician. Infection control and radiation rules vary by state. Prices are rough ranges that vary by model, condition, region, and year. ChairsideSource is not affiliated with any manufacturer named here.