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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

Do you know how to do IPR safely?

We must know how much thickness of enamel we have at the interproximal contact areas!

Sarig et al. 2015 measured the proximal enamel thickness (PET) of complete maxillary and mandibular dentition contact areas using extracted teeth


5 common features were found in both maxillary and mandibular arch

1. Thickness increased progressively from lower incisor (0.63mm) to first molar (1.48mm)

2. Anterior teeth PETs are <1mm, posterior teeth PETs are between 1.1mm and 1.5mm

3. PETs of both maxillary and mandibular teeth were similar (except for incisors)

4. Only the PETs of the lateral incisor – canine interface are different (the other adjacent PETs are similar)

5. The contact area becomes located more gingival progressively from incisor to first molar.


Conclusions

• Guideline of maximal IPR of 0.5mmbetween anterior teeth.

• In the posterior teeth 1mm maximumcould be removed (presuming an equal amount is removed from each side)

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