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Premolar extraction protocols Part 2 What you may not know…
Premolar extraction protocols Part 1 What you may not know…
IPR accuracy exposed! What this study reveals may surprise you
Does Trimline matter in Aligners?
Open bite + Aligners = Gold standard?
Do you know how to do IPR safely?
How well do aligners perform in closing premolar extraction spaces?
Extrusion movements with Clear Aligners
Fixed braces vs Clear Aligners
Bite Jump with Clear aligners
How should we close a Maxillary Diastema with Clear Aligners?
Gum recession during Aligner treatment - What should you do?
The importance of attachments during expansion
Dental alveolar expansion with clear aligners - tips
Understanding Aligner Limitations in Arch Expansion 📚🔍
Ghost IPR in Clear Aligners
Peg laterals and Clear Aligners
Clear Aligner Patient Tips
Expansion with Clear Aligners
Upper Sequential Distalisation amount
Difficult Movements with Clear Aligners

Premolar extraction protocols Part 1 What you may not know…

I need my premolars extracted - are clear aligners suitable for me?

Premolar extraction protocols Part 1 - What you may not know…


Extraction cases with aligners is challenging and results in:

• Extrusion of incisors, mesial crown tipping of posterior teeth, intrusion of premolars (bowing effect) and uncontrolled tipping of incisors

• Bowing effect is commonly seen in extraction cases or when closing large spaces with aligners

• Mesial crown tipping of the posterior teeth and anterior extrusion during retraction.


In general, there are two types of extraction protocols

• “M Pattern” vs “Frog Pattern”


“M Pattern”

• One step protocol, retraction of canine followed by en-masse of anterior four teeth

• Canine distalise to middle of the extraction space and then all anterior 6 teeth retracts together


“Frog Pattern”

• Multi-step protocol, canine retracted to half of extraction space → incisors retracted until contact with canine → canine continue to retract half of the residual space → All anterior teeth then retracts at the same time


So...M pattern vs frog pattern Which one is better?

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