← All explanationsDistal occlusion (Class II relationship)

What does a distal bite relationship mean?

Distal occlusion describes a posterior dental relationship in which the lower arch lies further back relative to the upper arch than in a neutral relationship. Tooth positions and bony jaw relationships may contribute differently. Increased overjet can occur but is not the definition.

For training & practice ↓
SMILE meets DESIGN
Fictional lateral teaching model with a distal lower dental relationship relative to the upper posterior teeth. Focus: Upper posterior tooth.AI-generated
Idealized example of posterior dental relationships. It shows neither the cause nor jaw-base size or position by itself.
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Assess posterior contacts

Classification concerns the relationship of the upper and lower posterior teeth. Looking only at the front teeth in a mirror is insufficient.

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Separate teeth and jaw bases

A distal dental relationship does not automatically mean that the lower jaw alone is too small or too far back. Several factors may contribute.

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Consider the whole finding

Growth, tooth inclination, overlap and function are assessed together. They determine whether and how orthodontic treatment is appropriate.

At a glance

Direction?

Front-to-back relationship of dental arches.

Only overjet?

No.

Assessment?

Distinguish tooth positions and jaw bases.

Knowledge in motion

Explained in 36 seconds.

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

Distal occlusion (Class II relationship): short film

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
  1. Assess posterior contacts

    Classification concerns the relationship of the upper and lower posterior teeth. Looking only at the front teeth in a mirror is insufficient.

  2. Separate teeth and jaw bases

    A distal dental relationship does not automatically mean that the lower jaw alone is too small or too far back. Several factors may contribute.

  3. Consider the whole finding

    Growth, tooth inclination, overlap and function are assessed together. They determine whether and how orthodontic treatment is appropriate.

Often confused

Class II division 1 and division 2

Both involve distal posterior relationships. Their characteristic upper-incisor appearances and inclinations differ; individual patterns vary.

Quick answers
Is it the same as increased overjet?

No. Overjet measures horizontal incisor distance; distal occlusion describes the sagittal posterior dental relationship.

Is the lower jaw always too small?

No. Dental and skeletal relationships require separate assessment.

Are elastics or surgery always needed?

No. Treatment and appliances follow individual findings, not the label alone.

At the practice

For a personal discussion

Editorially suggested question to discuss with Dr Niusha Barahmand Pour:

Which parts of my finding concern the teeth and which concern the jaw bases?

Questions about bite relationships can be assessed through the tooth contacts and specialist orthodontic input where appropriate.

Discuss the bite relationshipAppointment selection at Doctolib
Meet Dr. Niusha Barahmand Pour ↗
Learning layer for training & practiceUnderstand terminology and deepen knowledge
Distal
Away from the dental midline; in this bite context, further back.
Sagittal
Relating to the front-to-back direction.
Angle classification
Description of dental relationships, particularly those of the first permanent molars.

Make the distinction

Both involve distal posterior relationships. Their characteristic upper-incisor appearances and inclinations differ; individual patterns vary.

Knowledge questionWhat does distal occlusion primarily describe?

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

  1. The sagittal posterior dental relationship.
  2. Always the length of the lower jaw alone.
  3. Only vertical front-tooth overlap.
View answer

The sagittal posterior dental relationship.

Dental relationships, jaw bases and overjet are different aspects of assessment.

Sources and context

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