← All explanationsGingival margin

What is the gum edge beside a tooth called?

The gingival margin is the visible edge of the gums around a tooth. It borders the entrance to the narrow gum crevice. Swelling or recession can change its position; appearance alone does not establish the cause.

For training & practice ↓

Fictional front teeth with visible gingival margins; not a pocket measurement. — Simplified teaching illustration · not a patient case or treatment outcome

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An edge around the tooth

The margin follows the tooth contour. The crevice between tooth and gum may be assessed with a fine probe.

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Plaque at the boundary

Plaque may collect near the margin. Suitable gentle cleaning reaches this boundary without forceful scrubbing.

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Discuss changes

Repeated bleeding, swelling or recession needs assessment. A photograph alone measures neither pocket depth nor bone support.

Watch the short explanation ↓

At a glance

What is the margin?

The gum edge beside the tooth.

What helps daily?

Gentle cleaning at the tooth–gum boundary.

When should it be checked?

For recurrent bleeding, swelling or recession.

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

An edge around the tooth
The margin follows the tooth contour. The crevice between tooth and gum may be assessed with a fine probe.
Plaque at the boundary
Plaque may collect near the margin. Suitable gentle cleaning reaches this boundary without forceful scrubbing.
Discuss changes
Repeated bleeding, swelling or recession needs assessment. A photograph alone measures neither pocket depth nor bone support.

Often confused

Gum margin or crown margin?

The gingival margin is tissue. A crown margin is the edge of an artificial crown.

Quick answers

Is the margin a gum pocket?

No. It is the edge; a pocket is a deepened space alongside the tooth.

Is brushing-related bleeding normal?

Repeated bleeding needs assessment. Continue gentle cleaning and ask for suitable technique guidance.

Does the edge show the exact bone level?

No. Additional findings are needed, sometimes including justified X-rays.

At the practice

For a personal discussion

An editorially suggested question for a discussion with Dr med dent Niusha Barahmand Pour:

Is irritation limited to the margin, or are other supporting tissues involved?

The gum edge bleeds or has changed? An examination can tell more than a mirror.

Arrange a gum checkAppointment selection at Doctolib

Meet Dr. Niusha Barahmand Pour ↗

Learning layer for training & practiceUnderstand terminology and deepen knowledge

Marginal: Located at an edge.
Sulcus: The narrow crevice between tooth and gum.
Recession: Movement of the gum margin towards the root.

Make the distinction

The gingival margin is tissue. A crown margin is the edge of an artificial crown.

Knowledge questionWhat cannot be reliably assessed from a photograph alone?

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

The shape of the visible tooth crowns.
The depth of a gum pocket.
Whether teeth are present.

View answer

The depth of a gum pocket.

Pocket depth requires clinical assessment.

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.