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Teeth

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...

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Related Experiment Video

Updated: Apr 17, 2026

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

Retention in orthodontics.

C D Johnston¹, S J Littlewood²

¹Centre for Dentistry, Queen's University Belfast &Belfast Health and Social Care Trust, Grosvenor Road, Belfast, BT12 6BP;

British Dental Journal

|February 17, 2015

Summary

This summary is machine-generated.

Orthodontic retainers are crucial for preventing tooth movement after braces. Understanding retainer types, wear, and management is essential for maintaining long-term orthodontic results and oral health.

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Last Updated: Apr 17, 2026

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Area of Science:

Dentistry
Orthodontics
Periodontics

Background:

Orthodontic treatment requires retention to prevent relapse.
Relapse is caused by periodontal fiber forces, occlusal contacts, and age-related dentofacial changes.
Patient and practitioner understanding of retainer importance is vital for stable outcomes.

Purpose of the Study:

To review different types of orthodontic retainers.
To discuss indications, duration of wear, and management of retainers.
To emphasize the role of general dental practitioners in retainer support.

Main Methods:

Literature review of removable and fixed orthodontic retainers.
Analysis of factors influencing orthodontic outcome stability.
Discussion of retainer management to minimize adverse effects.

Main Results:

Various removable and fixed retainer types exist with specific indications.
Proper retainer management is key to preventing oral health issues and relapse.
General dental practitioners play a significant role in patient retainer compliance.

Conclusions:

Consistent retainer use is essential for long-term orthodontic success.
Understanding retainer options and management optimizes patient outcomes.
Collaboration between orthodontists, patients, and general dentists ensures retainer efficacy.