Achieving true molar intrusion has long been a challenge in orthodontics due to the resistance posed by the surrounding anatomical structures and the tendency for reciprocal forces to cause unwanted movements in adjacent teeth. Traditional mechanics relying on inter-arch elastics or extraoral appliances often result in significant side effects, making them less effective for pure vertical control. However, the advent of skeletal anchorage using mini-screws has revolutionized molar intrusion, providing a reliable and predictable approach to managing vertical discrepancies, particularly in patients with anterior open bites or excessive lower facial height.

Mini-screws serve as absolute anchorage units, allowing for direct force application to the molars without affecting other teeth. By placing strategically positioned mini-screws in the posterior maxilla—either in the interradicular space or the palatal region—clinicians can generate controlled intrusive forces that act efficiently on the molars. The biomechanics of this approach facilitate true intrusion rather than mere tipping or extrusion of opposing teeth, leading to significant improvements in occlusal balance and facial aesthetics. Furthermore, mini-screws offer a minimally invasive and cost-effective alternative to more aggressive treatment modalities such as orthognathic surgery or long-term use of high-pull headgear.

Clinical studies have demonstrated that mini-screw-supported molar intrusion can lead to substantial vertical reduction while minimizing root resorption and periodontal complications when executed with appropriate force levels. Additionally, the stability of the results is enhanced when followed by a retention phase that allows for proper soft tissue adaptation. As orthodontists continue to refine the use of skeletal anchorage, mini-screws remain a cornerstone for addressing vertical discrepancies, proving that genuine molar intrusion is not only feasible but also highly effective in comprehensive orthodontic treatment planning.