Grey Bands She Had Been Covering With Her Hand for Thirty Years

Quick answer: Tetracycline staining sits inside the dentine, laid down while the teeth were forming, so it cannot be polished or bleached away in any ordinary sense. Extended whitening improves some cases considerably; the more severe banded cases usually need veneers.

The call

She had a particular way of talking, with her upper lip held low, that she had developed in her teens and no longer noticed doing.

Ilana, 43, from Sheinfeld, had been given tetracycline for recurrent infections as a young child in the early 1980s. She had never been told why her teeth were grey. She had assumed, for years, that she had simply not looked after them.

What we found

Uniform grey-brown discolouration across all the visible teeth, arranged in horizontal bands of varying intensity — darker in some zones than others, running across the teeth rather than in patches.

The banding pattern is the identifying feature. It reflects the timing of the drug: tetracycline binds to calcium and is incorporated into whatever tooth structure is being laid down at that moment, so each course of antibiotics is recorded as a band, and the position of the band tells you the age at which it was given.

Her teeth were otherwise sound. Good gum health, no decay, no wear.

Why whitening struggles. Ordinary staining sits on or near the enamel surface — tea, coffee, wine, smoking — and peroxide oxidises it readily. Tetracycline staining is chemically bound within the dentine, beneath the enamel, spread through the full thickness of the tooth. Peroxide has to diffuse the whole way through, and the pigment is far more resistant.

Severity matters for the prognosis, and it is worth grading honestly:

• Mild — light yellow or grey, uniform, no banding. Responds reasonably well to extended whitening.
• Moderate — darker, more saturated, still fairly uniform. Partial improvement.
• Severe — dark grey or blue-grey with pronounced banding. Whitening alone rarely satisfies.

Hers was moderate to severe, with clear banding in the middle third of the crowns.

We photographed and shade-matched everything before starting, which matters here more than usual — change is gradual, and without a record people underestimate how far they have come.

What we did

Extended whitening first, for four months. Not the usual two to three weeks: tetracycline cases need months of nightly low-concentration whitening, and the improvement continues slowly throughout.

The reasoning for trying first, even with a moderate-to-severe case, is that whitening is reversible and removes no tooth structure. Veneers are permanent. Doing the reversible thing first is the right order, and if it gets close enough, nothing irreversible has been done.

At four months, the overall shade had lightened noticeably and the background grey had softened. The bands, however, remained visible — and in a sense more so, because the surrounding tooth had lightened while the bands lagged.

Then the honest conversation. She could stop here with a real improvement, or accept veneers on the six upper front teeth to mask the banding. We showed her the photographs from four months earlier and let her decide over several weeks rather than in the chair.

She chose veneers, on the upper six only. We used minimally prepared ceramic veneers with an opaque layer in the ceramic to block the underlying grey, which is the technical requirement in these cases — a standard translucent veneer over a dark tooth shows the darkness through it.

The lower teeth were left as they were, lightened by the whitening, and matched acceptably.

The outcome

Fitted over two visits. At three years the veneers are intact and the colour is stable.

The change she mentions is not the shade. It is that she no longer holds her lip down when she speaks, which she had not consciously known she was doing until she stopped.

What to do if this happens to you

1. Find out what caused it. Tetracycline, fluorosis and trauma look different and need different treatment.
2. Try whitening first. It is reversible, removes nothing, and works better than most people expect.
3. Allow months, not weeks, for whitening in these cases.
4. Get photographs and shade records at the start. Gradual change is easy to underestimate.
5. Ask about opaque layering if veneers are planned over dark teeth. It is essential.
6. Do not decide in the chair. Take the photographs home and think about it.

Discoloured teeth you have never had explained? Ramat Beit Shemesh Urgent Dental Care will identify the cause before recommending treatment. 055-985-8845 · WhatsApp https://wa.me/972559858845 · Harav Kook 28/1, Beit Shemesh

This is a composite clinical story. It reflects a presentation we see regularly in Beit Shemesh and Ramat Beit Shemesh; the name and details are illustrative and are not those of a real patient.