Three-dimensional printed J-hook headgear: Bridging traditional and contemporary orthodontic practices

Abstract

The J-hook headgear, a once essential appliance in orthodontic biomechanics, has seen a marked decline in use because of the rise of temporary skeletal anchorage devices and shifting clinical preferences. Despite its historical success in managing Class II malocclusions and providing precise biomechanical control, limitations in availability have posed challenges for practitioners requiring noninvasive and effective alternatives. This study revisits the clinical utility of the J-hook headgear, evaluates its advantages and limitations compared with temporary skeletal anchorage devices, and introduces a novel solution through additive manufacturing. By leveraging 3-dimensional (3D) printing technology, a customizable and cost-effective design was developed using biocompatible materials. The proposed 3D-printed J-hook offers enhanced patient comfort and adaptability to various clinical needs and ensures the continued relevance of this appliance in contemporary orthodontic practice. Freely accessible 3D models are provided to encourage adoption, innovation, and further improvement. This approach highlights the potential of modern fabrication techniques in preserving valuable orthodontic tools while enhancing their clinical applicability.