Walk into a modern dental office today and there's a decent chance the "drill" you're bracing for isn't a drill at all. Laser dentistry has moved from a niche novelty to a mainstream tool used for everything from gum recontouring to cavity prep, and in many cases it means less bleeding, less swelling, and little or no need for anesthesia. But "dental laser" isn't one single product — it's a category that spans several very different technologies, each built around a different wavelength, and each sold by a handful of competing manufacturers with their own strengths and trade-offs. This article breaks down how dental lasers work, then compares the brands and models patients and practices are most likely to encounter.
Every dental laser is defined by its wavelength, and the wavelength determines what kind of tissue it can safely and effectively treat. Diode lasers and Nd:YAG lasers are absorbed well by pigmented, blood-rich soft tissue, which makes them excellent for gum contouring, frenectomies, and canker sore treatment, but they aren't designed to cut through enamel or bone. Erbium lasers (Er:YAG and Er,Cr:YSGG) are strongly attracted to water molecules, which happen to make up a large percentage of both tooth structure and soft tissue — this is why "all-tissue" lasers like Biolase's Waterlase line use this wavelength, often paired with a fine water spray that also helps limit heat buildup. CO2 lasers, meanwhile, are traditionally used for soft tissue only, with one notable exception (Solea) engineered around a specific 9.3-micron wavelength that the manufacturer says allows it to cut hard tissue as well. Some devices, like Fotona's LightWalker, combine two wavelengths (Nd:YAG and Er:YAG) in a single unit to widen the range of procedures a single machine can handle.
The dental laser market is dominated by a relatively small group of manufacturers, each associated with a flagship platform. Below is a side-by-side look at the systems dentists, hygienists, and patients are most likely to come across, along with the general pros and cons associated with each.
For a practice, the "best" laser depends heavily on which procedures it needs to support and who will be using it. Diode lasers remain the most common entry point because they're affordable, portable, and simple enough that hygienists can operate them for procedures like soft-tissue troughing or aphthous ulcer treatment. All-tissue systems like Waterlase and Solea cost significantly more but let a single machine replace both a drill and a soft-tissue laser, which can streamline workflow and reduce the number of instruments a patient needs to be exposed to during treatment. Dual-wavelength platforms like Fotona's LightWalker sit in between, trading some simplicity for versatility across specialties, including elective procedures like NightLase that a purely restorative laser can't offer.
For patients, the practical differences between brands are less important than the differences between laser categories. A diode or CO2 soft-tissue laser used for a frenectomy or gum recontouring generally means less bleeding and a faster recovery than a scalpel. An all-tissue laser used for a cavity can mean less vibration, less noise, and in many cases no need for a numbing injection at all. Independent research comparing systems like Solea, Waterlase, and Fotona's LightWalker has found their thermal effects on tooth pulp are broadly comparable to one another and safely below the threshold associated with pulp damage, suggesting that, for hard-tissue work, the choice between top-tier systems often comes down to a dentist's training and preference rather than a meaningful difference in safety.
Last Update: August 2026