🚨Precision Cuts vs. Buttons: Making the Right Choice in Aligner Therapy🚨

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  🚨Precision Cuts vs. Buttons: Making the Right Choice in Aligner Therapy🚨 As an orthodontist working with both fixed appliances and aligners, one of the most common clinical decisions faced is: When precision cuts and buttons should be used ? Through understanding of the fundementals of biomechanics in orthodontics, this comparison might help you in your cases: Precision Cuts - ✓ The preferred choice for Class II correction and deep bite cases ✓ Particularly effective for preventing unwanted retroclination ✓ Patient-friendly with no additional bonding required ✓ Biomechanical insight: Functions similarly to applying elastics on rectangular heavy wires in fixed appliances, offering excellent torque control and equally distibuted forces. Buttons - ✓ For combined movements: extrusions, rotations, and significant root control ✓ Requires bonding (which can be a patient compliance consideration) ✓ Delivers direct force application when needed ✓ Biomechanical...
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Thermoformed vs 3D Printed Aligners

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Jindal et al. 2019 presented a successfully 3D printed 0.75 mm thick clear aligner using
Dental Long Term (LT) clear resin and compared its mechanical and geometrical properties to a conventionally manufactured thermoformed Duran clear dental aligners. 

Dental Long Term (LT) clear resin and compared its mechanical and geometrical properties to a conventionally manufactured thermoformed Duran clear dental aligners. 

It was suggested that 3D printed resin-cured clear dental aligners are more suitable because
they have better geometric accuracy and mechanical resistance.


In early 2018, EnvisionTEC Inc. announced launch of E-Ortholign, a new material for the
direct 3D printing of clear thermoformed aligners .

This clear resin is marketed as biocompatible, stable, flexible and strong material for the direct 3D printing of esthetic retainers,Direct 3D printing of clear thermoformed aligners .

This clear resin is marketed as biocompatible, stable, flexible and strong material for the direct 3D printing of esthetic retainers.


To sum up
Direct 3D printing of aligners offers several advantages over conventional fabrication:




- Edges are softer and do not need trimming or smoothing
- Undercuts analysis is digitally defined
- Intra-aligner thickness is customizable, which may reduce the need of attachments that causes reducing the transparency of clear aligners.

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