Laser Dentistry: What It Can (and Can't) Treat [2026 Guide]
Lasers sound futuristic in dentistry. But reality is messier. Dental lasers excel at specific tasks but are overstated for others. Understanding what lasers can actually do—and where they're marketing hype—helps you make informed treatment decisions.
What Dental Lasers Can Do
| Application | Type of Laser | Effectiveness | Cost Premium |
|---|---|---|---|
| Gum reshaping (cosmetic) | Er:YAG, CO2 | Excellent | £200-400 more |
| Soft tissue surgery (benign growths) | Er:YAG, CO2 | Excellent | £200-500 more |
| Cavity preparation (specific cases) | Er:YAG | Good | £100-200 more |
| Root canal disinfection | Nd:YAG | Moderate | £100-300 more |
| Teeth whitening (acceleration) | Diode | Minimal | £50-100 more |
| Gum pocket reduction | Nd:YAG | Moderate | £300-600 more |
| Frenulum removal | Er:YAG, CO2 | Excellent | £200-400 more |
| Oral ulcer treatment | Diode | Moderate | £100-200 more |
Types of Dental Lasers Used
Er:YAG Laser (Erbium-doped yttrium aluminum garnet)
- What it does: Cuts hard tissue (tooth, bone) and soft tissue (gums)
- Best for: Cavity preparation, bone removal, soft tissue surgery
- Advantage: Precise cutting, minimal heat damage
- Disadvantage: Expensive equipment, requires specific training
CO2 Laser
- What it does: Cuts soft tissue precisely
- Best for: Gum reshaping, ulcer removal, frenulum removal
- Advantage: Excellent for aesthetic outcomes
- Disadvantage: Can overheat if not properly cooled
Nd:YAG Laser
- What it does: Penetrates soft tissue and root surfaces
- Best for: Root canal disinfection, bacterial reduction
- Advantage: Can reach into root canal system
- Disadvantage: Evidence of clinical benefit is weak
Diode Laser
- What it does: Soft tissue ablation, some disinfection
- Best for: Gum pocket reduction, tooth whitening (questionably)
- Advantage: Small, portable, relatively affordable
- Disadvantage: Less precise than CO2 or Er:YAG
Where Lasers Actually Excel
1. Cosmetic Gum Reshaping
What it does: Removes excess gum tissue to reveal more tooth Effectiveness: Excellent; precise, bloodless, minimal scarring Evidence: Well-established success Cost: £400-800 (vs. £200-400 with scalpel, but laser results are neater) Verdict: Lasers genuinely superior here
2. Removing Small Soft Tissue Growths
What it does: Removes benign growths (fibromas, papillomas) from gums or cheeks Effectiveness: Excellent; minimal bleeding, no stitches needed Evidence: Well-proven Cost: £300-600 with laser; £200-400 with scalpel + stitches Verdict: Lasers are better (less invasive, no sutures)
3. Frenulum Removal (Tongue Tie)
What it does: Removes restrictive tissue under tongue Effectiveness: Excellent, particularly for infants Evidence: Strong; especially popular for pediatric tongue-tie Cost: £400-600 laser; £300-400 scalpel Verdict: Laser is better (less bleeding for patients, faster healing)
Where Lasers Are Overstated
1. Cavity Preparation
Claims: "Laser cavities are pain-free and better" Reality: - Er:YAG can remove decay - But it's slower than traditional bur - Bur removes decay just as effectively - No proven superiority in outcome - Costs £100-200 more
Verdict: Unnecessary premium for equivalent result
2. Root Canal Disinfection
Claims: "Laser kills bacteria inside the canal" Reality: - Nd:YAG can kill some bacteria - But mechanical cleaning + irrigation (traditional method) does this equally well - No studies show laser-treated canals last longer - Adds £100-300 to cost - Slows down treatment
Verdict: Marketing; traditional method is as effective and faster
3. Teeth Whitening Acceleration
Claims: "Laser activates whitening gel for faster results" Reality: - Similar issue to blue light whitening - Peroxide does the whitening - Laser adds minimal benefit (if any) - Adds £50-100 to cost - Studies show no superiority
Verdict: Skip it; gel alone works nearly as well
4. Gum Disease Treatment
Claims: "Laser kills bacteria and promotes healing" Reality: - Laser can reduce bacteria temporarily - But traditional scaling + root planing achieves same clinical outcomes - Laser doesn't replace the need for good home care - Costs significantly more - No evidence of better long-term results
Verdict: Not better than traditional treatment; costs more
Where Lasers Have Moderate Benefit
1. Gum Pocket Reduction
What it does: Shrinks periodontal pockets using laser energy Evidence: Moderate—helps in some cases, minimal in others Cost: Significantly more (£300-600+) Verdict: May help, but traditional scaling + maintenance does too
2. Oral Ulcer Treatment
What it does: Accelerates healing of canker sores Evidence: Moderate; some pain relief, possibly faster healing Cost: £100-200 per treatment Verdict: Helpful for severe ulcers; unnecessary for minor ones
The Real Issue: Laser Marketing
Dental practices use lasers for marketing: - "State-of-the-art laser technology" - "Painless laser procedure" - "Advanced laser dentistry"
Reality check: Technology != better outcome.
A traditional scalpel in an expert's hands is often better than a laser in average hands.
Questions to Ask If Laser Is Recommended
- "Is laser necessary for my specific case, or is it optional?"
- Necessary: Soft tissue surgery, cosmetic reshaping
- Optional: Root canals, whitening, gum disease
-
Your choice: If optional, ask if traditional method is available
-
"Will laser improve my outcome compared to traditional treatment?"
- Be skeptical of marketing answers
- Ask for evidence
-
"Faster" and "painless" aren't the same as "better"
-
"What's the cost difference, and is it covered by insurance?"
- Many insurers don't cover laser premiums
- You're paying the difference
-
Sometimes substantial
-
"How many of these procedures have you done with laser?"
- Experience matters
- Newer technology requires competence
- Ask about complication rates
Laser vs. Traditional: Cost-Benefit
| Scenario | Laser Advantage? | Worth the Extra Cost? |
|---|---|---|
| Cosmetic gum reshaping | Yes—cleaner results | Yes (£200-400 premium) |
| Removing gum growth | Yes—less invasive | Yes (£100-200 premium) |
| Tongue tie in infant | Yes—less bleeding | Yes (£100-200 premium) |
| Root canal therapy | No—similar outcome | No (skip the premium) |
| Teeth whitening | No—minimal benefit | No (skip the premium) |
| Gum disease treatment | Maybe—unclear benefit | Questionable (£300-600 premium) |
| Simple cavity filling | No—slower, same result | No (use traditional bur) |
The Honest Assessment
Lasers are genuinely better for: Soft tissue surgery, cosmetic procedures, and cases where precision and minimal bleeding matter.
Lasers are overstated for: Hard tissue work, disinfection, and "acceleration" of healing.
The pattern: Lasers excel when the outcome is what matters (cosmetic gum reshaping looks better). Lasers are unnecessary when the outcome is the same (cavity removal; the result is the same whether bur or laser did it).
Finding Practices That Use Laser Appropriately
Good signs: - Dentist recommends laser for specific reasons (cosmetics, precision) - Not routinely offered for everything - Can explain why laser is better than alternative - Doesn't oversell "painless" or "advanced"
Red flags: - "All our procedures use laser for best results" - Can't explain why laser is necessary for your case - Significantly higher prices with laser - Pushes laser on routine procedures
The Bottom Line
Lasers are tools. Good tools in the right hands for the right job. But they're not universally better.
For soft tissue surgery and cosmetic work: Lasers genuinely shine.
For most other applications: You're mostly paying for modern marketing and questionable benefits.
Before accepting a laser procedure, ask: "Would the outcome be meaningfully different without laser?" If the answer is no, it's optional. If it's optional and costs more, decline unless you specifically want the (possibly marginally) better experience.
Modern doesn't mean better. A sharp scalpel in expert hands often beats expensive equipment in average hands. Ask why laser is necessary for YOUR case, not why it's nice to have.