Heliored red light therapy mouthpiece supporting gum health and oral inflammation

Gingivitis vs Periodontitis

July 31, 2026

Bleeding when you brush is common enough that most people ignore it. That is understandable and it is also the single most consequential thing you can get wrong about your mouth, because the difference between the two conditions it might indicate is the difference between something fully reversible and something permanent.

The distinction in one line

Gingivitis is inflammation of the gum tissue. It is reversible.

Periodontitis is inflammation that has progressed to destroy the bone and connective tissue holding your teeth in place. That damage is permanent. It can be stabilised, not undone.

Gingivitis, left alone, can progress to periodontitis. Not everyone with gingivitis develops it, since susceptibility varies with genetics, smoking, diabetes and other factors, but the pathway runs one way.

How common is this?

Gum disease is one of the most prevalent conditions in the UK adult population. National dental health surveys have consistently found that the large majority of adults show some sign of gum disease, and a meaningful minority have periodontitis at a level that threatens tooth stability.

So if you have bleeding gums, you are not unusual, and you also should not treat it as normal. Common is not the same as fine.

Gingivitis: what to look for

Signs: gums bleed when brushing or cleaning between teeth; gums look red or puffy rather than pale pink and firm; some tenderness; persistent bad breath.

What is happening: plaque accumulates at the gum margin and your immune system responds to it. That response is inflammation. Crucially, at this stage there is no loss of bone or attachment. Your gum tissue is irritated, not damaged.

The good news: gingivitis is fully reversible with consistent plaque removal. Not "manageable", reversible. Improve your cleaning and the inflammation usually resolves within a couple of weeks.

What to do:

Brush twice daily, two minutes, soft bristles, gentle pressure, angled at 45 degrees to the gum line
Clean between your teeth every day with interdental brushes or floss. This is where most gingivitis starts and where a toothbrush cannot reach
See a hygienist for a professional clean to remove hardened tartar
Give it two to three weeks of genuinely consistent effort before judging

If bleeding has not improved after three weeks of proper cleaning, see a dentist.

Periodontitis: what to look for

Signs: everything above, plus gums pulling back from teeth making them look longer; increased sensitivity as roots become exposed; persistent bad taste; teeth feeling loose or shifting; bite feeling different; pus at the gum line; gaps opening between teeth.

What is happening: the inflammatory response has extended below the gum line. The junction between gum and tooth breaks down, forming a periodontal pocket, a space where bacteria live that no toothbrush can reach. The immune response in that pocket damages the periodontal ligament and the alveolar bone anchoring the tooth.

The hard truth: lost bone and attachment do not come back on their own. Periodontitis can be stabilised, halted and kept under control indefinitely, with proper treatment and maintenance. It cannot be reversed at home.

What to do: see a dentist. Not next month. This needs professional assessment and treatment, likely involving deep cleaning below the gum line, possibly referral to a periodontist, and a long-term maintenance schedule.

The numbers your dentist uses

Pocket depth. Measured in millimetres between gum and tooth. 1-3mm is healthy. 4-5mm indicates early to moderate periodontitis. 6mm or more is advanced and hard to clean at home.

BPE (Basic Periodontal Examination). The standard UK screening. Your mouth is divided into six sextants, each scored 0 to 4: 0 healthy; 1 bleeding on probing; 2 plaque retention factors; 3 pockets of 4-5mm; 4 pockets of 6mm or deeper.

BOP (Bleeding on Probing). The percentage of sites that bleed when probed. The most useful single number for tracking progress, because it responds relatively quickly to changes in your routine.

Ask for your numbers. You are entitled to them, and they turn a vague sense of "my gums are a bit dodgy" into something you can track.

Why this matters beyond your mouth

A substantial body of research has documented associations between periodontal disease and systemic conditions including cardiovascular disease and diabetes. The relationship with diabetes appears bidirectional: poorly controlled blood sugar worsens gum disease, and gum disease appears to complicate glycaemic control.

The nature of these relationships is still being worked out, and association is not causation. But the associations are consistent enough that periodontal health is increasingly treated as part of general health rather than a purely dental issue. Worth knowing, not worth panicking about.

What genuinely helps, in order of impact

Cleaning between your teeth, daily. The highest-impact change most people can make, and the one most people skip. A toothbrush cleans about 60% of tooth surface. Gum disease starts in the other 40%.
Brushing properly rather than harder. Pressure causes recession without improving plaque removal.
Regular professional cleaning. Tartar is hardened plaque and cannot be removed at home.
Stopping smoking. One of the strongest modifiable risk factors. It also restricts blood flow to gum tissue, which masks bleeding, meaning smokers can have significant disease with fewer warning signs.
Managing diabetes if you have it.
Supportive tools, once the fundamentals are in place. Genuinely supplementary: useful additions to a solid routine, useless as substitutes for one.

Where light therapy sits in this

Photobiomodulation has been studied in dentistry primarily as an adjunct to conventional periodontal treatment. Clinical research has examined red and near-infrared light applied alongside standard non-surgical treatment, with some studies showing improvement in bleeding measures over standard treatment alone. Blue light at 450-470nm has separately been studied for its antibacterial action against porphyrin-producing oral bacteria.

That is the honest position: a supportive tool with a reasonable rationale and a growing evidence base, sitting on top of the fundamentals above. The Heliored Dual Light Therapy Oral Device is built for that role.

What it is not is a reason to skip your dentist. If you have pockets over 4mm, you need professional treatment, and no home device changes that.

The one-minute version

Bleeding gums, no recession, no loose teeth - likely gingivitis. Fully reversible. Improve your cleaning, especially between teeth. Reassess in three weeks.
Bleeding plus recession, sensitivity, loosening or shifting teeth - possible periodontitis. See a dentist now.
Not sure - see a dentist. Pocket depths take five minutes to measure and answer the question definitively.

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