← All explanationsCervical tooth defect

What is a notch near the gum line?

A cervical tooth defect is loss of hard tissue near the junction of crown and root. It may look rounded or wedge-shaped. Assessment first distinguishes decay from non-carious wear.

For training & practice ↓

Fictional teaching image of a small cervical defect on a premolar. — Simplified teaching model · not a diagnosis or outcome

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A sensitive location

Thin protective layers or exposed dentine at the tooth neck may become sensitive. Not every visible defect causes pain.

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Do not guess the cause

Acid exposure and mechanical wear can interact. Shape alone does not prove incorrect brushing or tooth grinding.

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Consider symptoms and progression

Monitoring, reducing contributing factors, treating sensitivity or restoration may be appropriate. The mere presence of a notch does not require a filling.

Watch the short explanation ↓

At a glance

What should be noticed?

Sensitivity and visible changes.

How is it monitored?

Document the finding and compare when needed.

What can be discussed?

Diet, brushing habits and suitable protection.

Knowledge in motion

Explained in 36 seconds.

Three steps. No audio.
Each scene can also be selected manually.

Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available below.

Read the film text in English

A sensitive location
Thin protective layers or exposed dentine at the tooth neck may become sensitive. Not every visible defect causes pain.
Do not guess the cause
Acid exposure and mechanical wear can interact. Shape alone does not prove incorrect brushing or tooth grinding.
Consider symptoms and progression
Monitoring, reducing contributing factors, treating sensitivity or restoration may be appropriate. The mere presence of a notch does not require a filling.

Often confused

Cervical defect versus gum recession

A defect involves missing hard tooth tissue; recession exposes a root because the gum margin has moved. Both can coexist.

Quick answers

Would harder brushing help?

No. Pressure cannot remove the defect and may add unnecessary stress. Technique should be adapted.

Will the missing tissue grow back?

Established tissue loss does not simply regrow. Prevention can help reduce further damaging exposure.

Do I need a filling?

Depth, progression, sensitivity and structural condition matter. Examination informs the decision.

At the practice

For a personal discussion

Editorially suggested question to discuss with Dr Niusha Barahmand Pour:

Which factors matter in my case, and would monitoring initially be appropriate?

A sensitive notch can be assessed specifically.

Discuss cervical tooth sensitivityAppointment selection at Doctolib

Meet Dr. Niusha Barahmand Pour ↗

Learning layer for training & practiceUnderstand terminology and deepen knowledge

Cervical: At the neck of a tooth.
NCCL: Non-carious cervical lesion.
Dentine: Tissue beneath enamel or root cementum.

Make the distinction

A defect involves missing hard tooth tissue; recession exposes a root because the gum margin has moved. Both can coexist.

Knowledge questionWhat does a wedge shape alone establish?

For learning, not for assessing personal symptoms. Your answer is not stored or sent.

The exact cause.
A shape requiring assessment.
Decay that always needs treatment.

View answer

A shape requiring assessment.

Describing shape does not determine its cause.

Sources and context

Editorial research: 2026-11-02. General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.