Author: Dr Shaun Goh
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Treatment Indications & Timings
Clinical Assessment & Presentations
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Description
Crowding
“Crowding represents a discrepancy between the size of the dental arch and the size of the teeth.”
– Cobourne and DiBiase 2010
Severities of crowding:
![](https://i0.wp.com/theorthoguide.org/wp-content/uploads/2021/02/Crowding-combination-diagram-summary-revised.jpg?resize=662%2C233&ssl=1)
Treatment Indications & Timings
Early treatment indications:
➤ Moderate crowding
➤ Severe crowding
➤ Early loss of primary canines
➤ Prevention of crowding
Clinical Assessment & Presentations
Intra-oral Features
![](https://i0.wp.com/theorthoguide.org/wp-content/uploads/2021/02/Crowding-b-displaced-canine.jpg?resize=256%2C157&ssl=1)
Different crowding severities
![](https://i0.wp.com/theorthoguide.org/wp-content/uploads/2021/02/Crowding-impacted-second-and-third-molars.jpg?resize=261%2C156&ssl=1)
Posterior crowding
![](https://i0.wp.com/theorthoguide.org/wp-content/uploads/2021/02/Crowding-late-incisor-crowding.jpg?resize=675%2C214&ssl=1)
Late incisor crowding
Diagnosis & Considerations
Diagnosis
- Tooth-jaw size discrepancy (Primary Crowding)
- Loss of arch length (Secondary Crowding)
- Late incisor crowding (Tertiary Crowding)
Clinical Considerations
- Soft tissue equilibrium
- Do wisdom teeth cause crowding?
- Transient crowding?
- Treatment timing
Treatment Options
Click a treatment category to explore.
➤ Early treatment
➤ Comprehensive orthodontics
Associated Problems
Ectopic canines | Ectopic premolars | Ectopic molars | Class I | Class II | Class III | Posterior crossbites