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Winnipeg North Dental
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All about the cusps

Inlays & Onlays for Kildonan Residents

Those small peaks on your molars quietly settle which restoration a damaged tooth may need. Kildonan residents can see how, then have their own tooth examined at our Winnipeg clinic.

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A small feature that matters

Run Your Tongue Over a Molar and You Will Find Them

The top of a back tooth is not flat. It rises into several rounded points, called cusps, with a central valley running between them. Those points meet the opposite teeth when you chew, which means they take a lot of the force.

When a tooth is damaged, one of the first questions is whether the cusps are still sound. That single observation shapes much of the choice between an inlay and an onlay, though it is not the whole picture. If you live in Kildonan, an area of Winnipeg, the examination happens at Winnipeg North Dental on McPhillips Street.

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Valley damage

Trouble confined to the central chewing area may suit a restoration kept inside the peaks.

Peak damage

Once a cusp has been weakened, the design may need to extend over that point.

Whole-tooth damage

Widespread weakening can shift the discussion toward a crown and its fuller coverage.

Inside or over

One word separates these restorations.

Both are custom-made pieces for selected back teeth with moderate decay, fracture or failing dental work. An inlay sits inside the cusps, while an onlay goes over at least one.

Inside the peaks: an inlay

Think of a piece that fills the valley and leaves all the peaks exposed as natural tooth. That can work when the surrounding structure is suitable.

  • Rebuilds the central part of the chewing surface.
  • Keeps every cusp as your own enamel.
  • Relies on sturdy walls on each side.

Over the peaks: an onlay

This version climbs up and across the weakened cusps to give them extra coverage, and it does so without wrapping around the whole tooth.

  • Covers whichever cusps have been selected.
  • Leaves remaining surfaces as they are.
  • Is shaped to take part in your bite.

Cusps are only one factor. Cracks, decay, root health and bite are also reviewed before anyone can say which design suits a given tooth.

From examination to bonding

How a cusp decision turns into a restoration.

Once the dentist has judged the cusps and the rest of the tooth, and you have agreed on a plan, the work generally unfolds along these lines.

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  1. 01

    Judging the structure

    The peaks and walls are examined along with any cracks, your bite and the health of the root.

  2. 02

    Shaping the space

    With the area usually numbed, damaged material is cleared away and the tooth is given a clean form that can support the new piece.

  3. 03

    Capturing the details

    A scan or impression records the tooth, its neighbours and how your teeth come together, and a shade gets selected as well.

  4. 04

    Fitting and securing

    The finished piece is tried against your bite and adjusted as needed, then bonded in place and polished. A temporary may protect the tooth beforehand.

Ahead of your exam

Notice where the trouble seems to be.

You cannot assess a cusp yourself, but your observations can still be helpful. Pay attention to how the tooth behaves for a few days if it is safe and comfortable to do so.

Avoid testing a tooth by biting hard on it. If a peak has broken away or the tooth is painful, call the clinic.

Things to mention

  • Whether a corner or point of the tooth feels chipped or sharp.
  • Which foods or kinds of bite make you aware of it.
  • Any filling or other work you know of in that tooth.
  • What you take regularly, along with any recent shift in your health.
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Working on a molar

Reaching those peaks is less daunting than it sounds.

Knowing what happens during preparation can take away some of the mystery. The dentist can tell you which part of the tooth is being worked on if you would like to hear about it.

Numbing comes first

Local anesthetic is the usual approach for preparing a tooth, whichever design has been chosen.

An odd bite at first

A reshaped peak can feel unfamiliar when you close, so tell the dentist if something feels off.

Short-lived sensitivity

Tooth sensitivity is possible following treatment, and it is expected to fade with time.

Protecting the peaks

Cusps still need looking after.

Bonding the restoration does not end the job. The natural cusps next to it, and the edge where they meet it, still rely on your daily care.

01

No tearing or prying

Treat restored molars as chewing teeth only, and leave packages and thread to the scissors.

02

Careful around the edge

Clean the line between the piece and your enamel with particular attention each day.

03

Speak up about changes

Phone us if your bite feels high, sensitivity lingers, a rough spot appears or the piece seems to move.

How a restoration performs depends on many things, among them remaining tooth, bonding, moisture control, grinding and hygiene. Material alone does not decide it.

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Winnipeg North Dental

Unit-5 2358 Mcphillips Street, Winnipeg, MB R2V 4J6
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Having your cusps checked

An Examination at Our McPhillips Street Clinic

Your cusps get their close look at Winnipeg North Dental, Unit 5, 2358 McPhillips Street, Winnipeg, when you come from Kildonan. Use the directions link to plan your way there.

When you send a request, a short note on where the tooth feels damaged is plenty. Someone from the office will respond about a time, and pain should be reported by phone.

Questions about coverage?

Talk with our team before your visit or learn about CDCP.

A little clarity before your visit

Your questions, answered.

Helpful details about inlays & onlays in Kildonan.

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What exactly is a cusp?

It is one of the raised points on the chewing surface of a back tooth. Most molars have several, and they fit against the opposing teeth when you close.

Can a cusp break off on its own?

A cusp weakened by decay, a crack or a large older repair can give way during ordinary chewing. If one has come off, call the clinic and describe what happened.

How many cusps can an onlay cover?

It can extend over one or more of them, depending on which have been weakened. If so much of the tooth needs protection that an onlay no longer makes sense, a crown may be discussed.

Are inlays used on front teeth, which have no cusps?

These restorations are generally for selected back teeth. A front tooth has a different shape and job, so the dentist would talk about what suits it instead.

Will my restored tooth still have peaks?

Yes. The piece is shaped to restore a working chewing surface and is checked against your bite before being bonded.

How can someone from Kildonan find out what shape their cusps are in?

Ask for an assessment here or by phoning (204) 338-3003. It happens at Unit 5, 2358 McPhillips Street, Winnipeg, MB R2V 4J6, at a time the office confirms with you.

Have a look at yours

Find out how your cusps are doing.

Send a brief request for a visit to our Winnipeg clinic, and the office will reply with timing. If a tooth is sore or broken, a phone call is the right first step.

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