Gum Disease on Your Treatment Plan: BPE Scores and Deep Cleaning Explained

Somewhere on your treatment plan, or in the notes your dentist printed out, there’s probably a little grid of six numbers. It might look like 2 1 2 / 3 2 3, or it might just say “BPE 323/423”. Most people skip past it to get to the prices. That’s a mistake, because those six digits explain why your dentist wants you to see the hygienist three times before they’ll touch the veneers you actually came in for.

This guide covers what a BPE score means and how it turns into “deep cleaning” on a quote. It also shows how to get ChatGPT or Claude to help you check whether the gum section of your plan makes sense.

What BPE stands for and how the grid works

BPE is the Basic Periodontal Examination. “Periodontal” just means the gums and the bone holding your teeth in. UK dentists are expected to do one at every new-patient exam and at regular check-ups for adults, following British Society of Periodontology (BSP) guidance.

To do it, the dentist splits your mouth into six sections, called sextants, and runs a thin probe with a ball on the end gently around the teeth in each one. They write down only the worst reading they find in each section. The result goes in a grid that maps onto your mouth as if you were looking at your own face from the front:

          Upper right | Upper front | Upper left
BPE:          3       |      2      |     3
          ------------+-------------+------------
          Lower right | Lower front | Lower left
BPE:          4       |      2      |     3

On a printout that often collapses to 323/423 or 3 2 3 4 2 3. Each number runs from 0 to 4, and sometimes one has an asterisk after it.

What each number means

The jump from 2 to 3 matters most. A code 2 means dirty but not yet damaged: tartar is irritating the gum, but the gum is still sitting where it should. A code 3 or 4 means the gum has come away from the tooth and formed a pocket. Pockets are where periodontitis lives, and periodontitis destroys the bone holding your teeth. It doesn’t hurt much, which is why so many people are surprised to see it on a plan.

How a 3 or a 4 turns into “deep cleaning”

A normal scale and polish cleans the visible tooth and just under the gum line. When a pocket is 5 or 6 mm deep, the bacteria and hardened tartar sit far below where that clean reaches. Getting them out needs a different procedure, which shows up on quotes under several names:

• Root surface debridement (RSD)
• Non-surgical periodontal therapy
• Subgingival scaling
• Root planing
• “Deep clean” or “perio treatment”

They’re all broadly the same thing. The clinician numbs the area and cleans the root surfaces inside the pockets, usually one or two quadrants (quarters of the mouth) per visit. A few months later they re-measure the pockets to see what’s healed. That re-measure is the “re-evaluation” or “6-point pocket chart” line you might see on your plan.

Your notes may also include a diagnosis written in the current UK and European format, something like:

Generalised periodontitis, Stage III, Grade B
Currently unstable
Risk factors: smoker (10/day)

Stage (I to IV) describes how much damage there is already. Grade (A to C) is how fast it’s likely to progress. “Unstable” means there’s active disease right now, which is exactly why the cosmetic work has been pushed back.

Why hygiene comes before cosmetic work

This is the part people push back on, and it’s the part your dentist is right about.

Inflamed gums bleed. Bleeding ruins the accuracy of impressions and digital scans for crowns and veneers, and it stops composite bonding from sticking properly. Bonding needs a completely dry surface.

Then there’s what happens after treatment. When gum inflammation settles, the swollen gum shrinks back by a millimetre or so. If a crown or veneer was made to sit at the old, puffy gum line, a dark edge or a gap can appear above it once the gums heal. You’d have paid for a cosmetic result that looks worse three months later.

Implants are the starkest case. Putting an implant into a mouth with active periodontitis raises the risk of peri-implantitis, the implant version of gum disease, which can lose you the implant. Braces and clear aligners such as Invisalign move teeth through bone, and doing that while bone is actively being lost can speed the loss up. Whitening gel on inflamed gums simply hurts more.

So when a plan says “Phase 1: periodontal therapy, Phase 2: re-evaluation, Phase 3: bonding”, that order protects the money you’re about to spend on Phase 3. If a plan for veneers or implants has no gum section at all and your BPE has 3s or 4s in it, that’s the plan you should be worried about.

What it costs: NHS and private

On the NHS in England, a check-up with a scale and polish that’s clinically needed sits in Band 1. Root surface debridement over several visits falls under Band 2, which covers all the Band 2 treatment in one course however many appointments it takes. At the 2025/26 rates that was £27.40 for Band 1 and £75.30 for Band 2. Check nhs.uk for the current figure, as the charges usually change each April. Scotland, Wales and Northern Ireland charge differently, so look up your own nation’s fees.

The NHS does not cover purely cosmetic polishing, and many NHS practices have long waits for hygienist time. That’s often why patients get offered the gum treatment privately even when the check-up was NHS.

Private prices vary a lot by region. These are typical UK ranges, not quotes:

That last row catches people out. After deep cleaning, BSP guidance generally points towards more frequent maintenance, often every three months at first. Over a year that can cost more than the initial treatment, so ask for it in writing.

A worked example

Say your plan reads:

BPE: 323/423
Dx: Generalised periodontitis Stage III Grade B, unstable
1. Full perio chart                      £95
2. RSD x 4 quadrants @ £180              £720
3. Re-evaluation + chart (3 months)      £95
4. Composite bonding UR2-UL2 (4 teeth)   £1,400  (to follow once stable)
Total                                    £2,310

Read it from the BPE outward. Four sextants scored 3 or above and one scored 4, so full-mouth charting is the standard next step, and that’s line 1. Deep cleaning all four quadrants fits a picture where most sections have pockets. The re-evaluation is how anyone will know the treatment worked. The bonding has been deliberately parked until the gums are stable.

Here’s what’s not there: no maintenance cost after the re-evaluation, and no mention of what happens if some pockets stay at 6 mm. Those are the two questions to take back to the practice. £180 per quadrant is mid-range for a private practice outside central London. If you were quoted £350 per quadrant in a market town, you’d have reason to ask why.

Using ChatGPT or Claude to check your plan

AI tools are good at decoding jargon and spotting what’s missing. They can’t look in your mouth, and they don’t know your local prices with any reliability, so use them to prepare questions, not to overrule your dentist.

Before you paste anything, take out your name, date of birth, NHS number and the practice address. Then give ChatGPT, Claude, Gemini or Microsoft Copilot something like this:

I'm a UK patient with no dental training. My dentist gave me this
treatment plan. Please:
1. Explain my BPE score sextant by sextant in plain English.
2. Explain the diagnosis line.
3. Tell me whether the order of treatment makes sense and why.
4. List anything that seems to be missing (e.g. maintenance, re-assessment,
   referral) and questions I should ask my dentist.
5. Don't guess at prices. Tell me what I should compare instead.

BPE: 323/423
Dx: Generalised periodontitis Stage III Grade B, unstable
[paste the rest of the plan here]

Asking the tool not to guess at prices matters. Chatbots will happily invent a “typical cost” that’s out of date or based on US figures. Compare prices yourself instead: phone two other practices nearby, or check their published fee lists. Most private practices put their hygiene and perio fees online.

The same prompt is useful for a second opinion. If another dentist’s plan skips the gum work and goes straight to veneers, paste both plans in and ask the AI to compare how each one handles the BPE findings. The gap usually jumps out. There’s a fuller walkthrough of reading every section of a quote, not just the gum part, in our guide to treatment plans explained.

Questions worth asking at the practice

• Which sextants scored 3 or 4, and which teeth were the deepest?
• Is this being done by the dentist, a hygienist or a therapist, and is the price per quadrant or for the whole course?
• When is the re-evaluation, and what happens if pockets are still deep after it?
• How often will I need maintenance afterwards, and what does each visit cost?
• If I’m NHS, can the deep cleaning be done under Band 2 here, and how long is the wait?
• Would you refer me to a periodontist for any of this?

A practice that answers all six without hesitating, and puts the maintenance cost on paper, is treating your gums as the foundation they are. If the answers get vague, or someone suggests doing the veneers first and “sorting the gums later”, go back to the six numbers on that grid. They’re the clearest evidence you have about which plan to trust.