CAD/CAM digital techniques offer greater precision and predictability for TAD placement and molar movement compared to conventional methods, especially when combined with aligners and sliders for distalization or mesialization. • Conventional TAD placement relies on manual positioning, often guided by anatomical landmarks and clinician experience. While effective, it can lead to variability in outcomes and increased risk of root proximity or implant failure. • CAD/CAM-guided TAD insertion uses digital planning and 3D-printed surgical guides, enhancing accuracy, safety, and reproducibility. This method allows for optimal angulation and depth control, especially in anatomically challenging areas like the anterior palate. • The Benefit for Aligner Technique integrates aligners with mini-implant-borne sliders (e.g., Beneslider) to overcome limitations of aligner-only treatments. This hybrid approach enables bodily molar movement with minimal tipping and anchorage loss. • Staging is critical: Initial TAD-based anchorage stabilizes the arch, followed by sequential aligner activation to guide tooth movement. CAD/CAM-designed sliders can be customized for each patient, improving biomechanics and reducing unwanted side effects like midline shifts or arch rotation. • Distalization using TADs is a well-established method for treating Class II malocclusions. It creates space without extractions and avoids reliance on patient compliance with headgear or elastics. • Devices like the Beneslider or Distalslider, anchored in the anterior palate, provide controlled distal movement of molars with minimal tipping. CAD/CAM customization enhances fit and force distribution, shortening treatment time and improving outcomes. • Mesialization, though less common, is used in cases requiring space closure or correction of Class III malocclusions. • TAD-supported mechanics allow for bodily mesial movement of molars, especially when combined with aligners or power arms. CAD/CAM planning ensures precise force vectors and minimizes unwanted side effects like root resorption or anchorage loss. These advanced techniques are transforming orthodontic biomechanics, offering clinicians powerful tools to achieve complex tooth movements with greater control and patient comfort.


Learning Objectives
After this lecture, you will be able to see the advantages of new CAD/CAM techniques for TADs
After this lecture, you will be able to know different TAD borne distalization mechanics
After this lecture, you will be able to know anchorage demands for upper space closure