LANAP and Laser Gum Surgery: What the Evidence Actually Shows

Search for gum disease treatment in Austin and laser treatment appears near the top, usually with the words “no cutting, no sutures, no downtime.” Patients arrive at consults asking for it by name. This article sets out what the procedure is and what the research has found, so that the decision rests on evidence rather than on which office has the better advertising.

What Laser Gum Treatment Is

Lasers are used in periodontal treatment in three ways. As an add-on to conventional scaling and root planing, where the laser is run inside the pocket after the root has been cleaned. As a stand-alone treatment in place of scaling. And as part of a branded surgical protocol, of which the best known is LANAP, the Laser-Assisted New Attachment Procedure, which uses one manufacturer’s Nd:YAG laser to remove the lining of the pocket, follows with ultrasonic root cleaning, and finishes with a second laser pass meant to form a stable clot that seals the pocket while it heals.

Different lasers do different things. Diode and Nd:YAG lasers act mostly on soft tissue and bacteria. Er:YAG lasers can remove hard deposits and bone. Studies of one are not evidence for another, which is one reason the literature is hard to summarize and easy to quote selectively.

What the Reviews Have Found

The largest independent assessment is the American Academy of Periodontology’s best-evidence review. In Journal of Periodontology, Chambrone and colleagues screened 475 papers and included 28 randomized trials of infrared lasers for moderate to severe periodontitis. Adding a laser did improve pocket depth and attachment level in the pooled results. But the differences were, in the authors’ word, modest, under one millimeter, the certainty of the evidence was rated low to moderate, and most of the resulting clinical recommendations were graded weak or based on expert opinion.

The European review two years later reached the same place from a different direction. In Journal of Clinical Periodontology, Salvi and colleagues examined adjunctive lasers and photodynamic therapy added to non-surgical instrumentation in untreated periodontitis, found high variability in the laser results at six months, and noted that only two of the laser studies had reported any patient-centered outcome. Their conclusion was that the available evidence is limited by the small number of controlled studies and their differing designs, and that patient-reported benefits remain to be demonstrated. That review fed into the European Federation of Periodontology’s treatment guideline, the S3-level clinical practice guideline for stage I to III periodontitis, which built its recommendations on fifteen commissioned systematic reviews and did not make lasers part of routine treatment.

The bluntest summary is in Periodontology 2000, where Cobb reviewed 118 human clinical studies spanning 25 years and concluded that the evidence remains conflicted and insufficient to suggest that adding a laser to a periodontal protocol produces antimicrobial or healing outcomes superior to traditional therapy. He also explains why the literature reads the way it does: most studies are small, their laser settings vary even within one wavelength, their follow-up is short, and many did not mask the examiner. The Academy’s earlier 2011 position statement had said much the same with less data.

What the LANAP Studies Show

The evidence for the branded protocol specifically is thinner than the advertising suggests, and it is worth reading what the studies say rather than what is said about them.

The histology paper that LANAP marketing rests on is Nevins and colleagues, 2012, in the International Journal of Periodontics and Restorative Dentistry. Eight patients with twelve teeth already scheduled for extraction had full-mouth LANAP; nine months later the teeth were removed and examined under the microscope. Five of the ten teeth analyzed showed some periodontal regeneration, meaning new cementum, ligament and bone; one showed new attachment; four had healed by a long junctional epithelium, which is how a pocket ordinarily heals after any treatment. The authors’ own conclusion was that the protocol can induce regeneration and should be investigated further in long-term trials against conventional therapy.

The clinical follow-up from the same group, a nine-month study of eight patients, found that deep sites improved: pockets that started at five millimeters or more averaged 6.5 millimeters before and 3.9 after. Those are good numbers. They are also numbers without a comparison group. Conventional scaling and root planing, and conventional surgery, also reduce deep pockets substantially, which is why an eight-patient study without a control arm cannot tell a patient whether the laser did better, the same, or worse. The authors say so themselves: the results should be compared with conventional therapy in long-term trials. More than a decade on, that comparison has still not been published at a scale that would settle it.

What This Means for a Patient

Three honest statements can be made from the research.

Lasers are not harmful when used properly, and adding one to conventional treatment may help slightly. The measured benefit is small enough that it is unlikely to change whether a tooth is kept.

No controlled trial has shown a laser protocol, LANAP included, producing better outcomes than conventional non-surgical or surgical treatment. Claims that it does rest on small uncontrolled studies and on a histology paper the authors themselves called preliminary.

The comfort claim, that laser treatment hurts less and heals faster, is the part patients care about most and the part with the least data. Conventional periodontal surgery is also considerably more comfortable than its reputation; does periodontal surgery hurt sets out what recovery actually involves.

Austin Periodontal Associates does not offer LANAP or laser pocket treatment. On the evidence above, a laser adds cost without a demonstrated gain over conventional care done well.

What determines whether gum disease is controlled is the diagnosis, the stage and grade of the disease, how thoroughly the roots are cleaned, whether pockets that persist are treated surgically, and whether the patient keeps the maintenance schedule. Periodontitis stages and grades explains the classification, and gum disease treatment covers the sequence used at Austin Periodontal Associates: instrumentation, re-evaluation, and surgery only where pockets remain, with regeneration where the shape of the defect allows it.

Questions Worth Asking Whoever You See

• What stage and grade is my periodontitis, and what would the treatment be without a laser?
• What specifically is the laser expected to add in my case, in millimeters or in teeth saved?
• Is there a controlled study comparing this protocol with conventional treatment, and what did it find?
• What is the plan if the pockets are still there at re-evaluation?
• What does maintenance look like afterward, and how often?

A periodontist who answers those directly has thought about the case. An answer that begins with the equipment has not.

If a laser treatment plan has already been proposed, a second opinion at Austin Periodontal Associates is an exam, a staging, and a written plan to compare with it. Request a consult in North Austin, or call (512) 346-6097.