Hall Crowns: Fixing a Cavity Without the Drill

Which teeth it works for

Hall crowns are for baby back teeth (molars) with decay that hasn't reached the nerve.

It's a good fit when:

• The decay is moderate to deep but the nerve is healthy
• Your child is anxious, very young, or finds conventional treatment difficult
• The tooth has years left before it's due to come out
• Good for 1 - 3 teeth but not for a full mouth full of cavities

It isn't right when:

• There are signs the nerve is involved — ongoing toothache, night pain, swelling, or a bump on the gum
• The x-ray shows infection at the root
• The tooth is too broken down to hold a crown
• The tooth is about to fall out anyway

In those cases we'd recommend a pulpotomy with a conventional crown, or removing the tooth. We check carefully before choosing this route — sealing decay over an unhealthy nerve would cause problems rather than solve them.

What happens at the appointment

First, spacers. Most children need small soft rubber rings placed between the teeth for a few days beforehand or about 30 mins in-office prior to fitting a crown. These gently create the fraction of a millimeter of space the crown needs. They can feel tight or odd — like food stuck between the teeth — and that feeling settles. Soft foods for a day or two help.

Then the crown. We select the right size, fill it with cement, and seat it over the tooth. We'll ask your child to bite down to push it fully into place.

We clean up the edges and check everything.

That's the whole appointment. No numbing, no drilling, and usually just a few minutes in the chair.

What to expect afterward

The bite will feel high at first. This is expected and worth preparing for. The crown adds a little height, so for the first days your child may notice their teeth meeting differently on that side. Their bite adjusts on its own over the following weeks — usually within a month, and often sooner. We don't grind the crown down to speed this up, because that adjustment happens naturally and reliably.

They can eat straight away, though soft foods are easier for the first day.

Some gum tenderness is normal for a day or two.

Brush and floss it like any other tooth. The crown can't decay, but the gum around it still needs care.

Call us if pain develops rather than settles, if there's swelling, or if the crown ever feels loose.

Questions parents ask

Will the decay keep growing under the crown?

No. Sealed away from food and saliva, the bacteria can't survive, and the decay arrests. This has been demonstrated in studies following these teeth over years.

How long does it last?

The goal is for it to stay put until the baby molar falls out naturally, taking the crown with it. Most do.

Does it really not hurt?

There's no injection and no drilling, so there's nothing to numb. Children feel pressure while the crown is seated, and the spacers can feel tight beforehand, but the appointment itself isn't painful.

Why doesn't every dentist do this?

It runs against how many of us were trained — the instinct to remove all decay is deeply ingrained. The evidence has caught up faster than the habit. It's now widely used in the UK and increasingly in the US.

Is it as good as a regular filling or crown?

For a suitable tooth, studies show comparable success. The important word is suitable — the technique depends on choosing the right tooth, which is our job.

It's silver, isn't it?

Yes. Hall crowns are stainless steel and go on back molars, where they aren't visible when your child smiles. Our page on crowns covers this in more detail.