Focusing on the Vertical Dimension
Author: Dr. Maria Magallon
Precise Planning with the FAS® Aligner System – Flexible, Individual, and Clinically Relevant
The vertical dimension is a key parameter in orthodontic treatment planning. It affects not only occlusion but also aesthetics and long-term stability. The FAS® Aligner System from Forestadent offers a modern, digitally supported solution—optionally with 3D analysis, yet also fully compatible with a traditional workflow. A true all-in-one package with exclusive features for every type of orthodontic treatment.
Fig. 1:Three-dimensional analysis of the patient’s real condylar rotation axis.
Flexibility as Needed – Conventional or 3D
A core feature of FAS® is the freely selectable planning strategy. Clinicians decide for themselves: conventional, proven planning—or, optionally, precise 3D analysis using CBCT and real final-arch calculation.
The 3D-supported planning provides additional security, but it is not mandatory. This makes FAS® suitable for both simple and complex cases—from aesthetic corrections to comprehensive interdisciplinary treatment.
Fig. 2:Three-dimensional assessment of the ideal vertical dimension.
Limitations of Conventional Analyses
Traditional cephalometric analyses—such as those by McNamara or Steiner—provide valuable reference values, but they are based on normative data and a two-dimensional perspective. The individual biomechanical structure of the temporomandibular joint is usually not taken into account.
In complex cases with vertical or sagittal discrepancies, this may lead to misjudgments. Here, FAS® offers a decisive advantage with its optional final-arch analysis based on real condylar rotation.
Targeted Influence on the Vertical Dimension
Especially in patients with a posteriorly rotated mandible and an increased vertical dimension, FAS® enables targeted mandibular anterior rotation—typically achieved through posterior intrusion. The results are both aesthetically and functionally relevant:
- Reduced gingival exposure
- Improved jaw projection
- More harmonious facial profile
Fig. 3: Required compensation in the transverse and vertical planes when adjusting the vertical dimension in a Class II patient with a posteriorly rotated mandible.
This planning approach is particularly effective in Class II cases. In Class III cases, however, the same rotation can be counterproductive—precise analysis is therefore essential.
Fig. 4: Required compensation in the vertical and sagittal planes when adjusting the vertical dimension in a Class III patient with a posteriorly rotated mandible.
Early Detection of Transversal Compensation Needs
Anterior rotation affects not only the sagittal but also the transverse relationship. Often, overexpansion of the maxilla becomes necessary to achieve harmonious occlusion.
If this is not recognized early, functional limitations or exceeding skeletal boundaries may occur. Once again, accuracy in planning ensures stability in outcomes.
Fig. 5: Necessary maxillary overexpansion to compensate for mandibular width in a Class III patient with an increased vertical dimension beyond skeletal limits.
One System for the Entire Field of Orthodontics
FAS® is not just a modern aligner system—it is a fully comprehensive planning tool for all areas of orthodontics. It integrates:
- Conventional or 3D-based planning
- Patient-specific biomechanics
- Intelligent digital tools for control across all spatial planes
True to the motto:
“An all-in-one package—with exclusive features for successful treatment in every aspect of orthodontics.”
The vertical dimension is not a static measurement but a dynamic planning factor. With the FAS® Aligner System, simple and complex cases can be treated flexibly and individually—with or without 3D analysis. Those seeking planning reliability, predictability, and long-term stability will find a dependable partner in FAS® for modern orthodontics.
Experience It Live: FAS® at the TPAO in Cologne
Visitors to the TPAO in Cologne will have the opportunity to explore the FAS® Aligner System at the Forestadent booth and learn about its wide range of applications.
