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Class II extraction treatment with aligners: a reliable approach
L' Orthodontie Francaise
|July 12, 2022
Summary
This study presents a digital planning protocol for Class II malocclusion treatment using maxillary first premolar extraction. The Invisalign G6 protocol effectively manages space closure and root parallelism in adult patients.
Area of Science:
- Orthodontics
- Digital Dentistry
Background:
- Class II malocclusion is commonly treated by extracting maxillary first premolars to reduce overjet.
- Aligner orthodontics has advanced, but complex apical movements remain challenging.
Purpose of the Study:
- To describe a digital planning protocol for space closure in adult Class II malocclusion.
- To present the clinical application of the G6 protocol for premolar extraction cases.
Main Methods:
- Utilized a digital planning protocol for maxillary first premolar extraction in Class II malocclusion.
- Applied the Invisalign G6 protocol with SmartStage™ and SmartForce™ technologies.
- Managed anchorage and extraction space closure through digital overcorrection (overtipping).
Main Results:
- Achieved proper overjet (OVJ) and overbite (OVB) in all patients.
- Established a Class II molar relationship and Class I canine relationship.
- Maintained facial balance and smile arc aesthetics.
Conclusions:
- The Invisalign G6 protocol enables effective space closure and root parallelism in extraction cases.
- Digital planning and specific protocols enhance control over complex tooth movements.
- This approach facilitates stable Class I canine and Class II molar relationships.
