Abstract

Orthodontic expansion remains a cornerstone in the management of transverse discrepancies, functional malocclusions, and space deficiency. This webinar provides a comprehensive overview of expansion screws and removable orthodontic appliances, bridging fundamental principles with contemporary clinical applications.

The session will begin by revisiting the biomechanics and indications of expansion screws within removable appliances, emphasizing force systems, activation protocols, and patient compliance. A detailed discussion will follow on functional appliances, particularly the Twin Block, highlighting its role in sagittal correction and growth modulation.

Participants will explore maxillary splints used in conjunction with headgear, with a focus on anchorage control and orthopedic effects. The lecture will also cover various removable expansion appliances, including maxillary expanders and anterior/posterior bite planes, outlining their indications, design considerations, and limitations.

Transitioning to fixed approaches, the webinar will compare removable expanders with fixed maxillary expansion devices, discussing clinical decision-making, efficiency, and stability. Finally, the session will introduce the digital workflow for maxillary expanders, demonstrating how CAD/CAM technologies enhance precision, customization, and laboratory communication. Real clinical scenarios will be used to illustrate the transition from conventional to digital orthodontics.

This webinar aims to equip clinicians with a structured approach to selecting and designing expansion appliances, while embracing the evolving digital landscape in orthodontics.

Learning Objectives

By the end of this webinar, participants will be able to: 

• Discuss the biomechanics and clinical indications of expansion screws in removable orthodontic appliances. 
• Explain the design, mechanism, and clinical application of Twin Block appliances and maxillary splints for headgear. 
• Differentiate between removable and fixed maxillary expansion appliances in terms of efficiency, indications, and limitations. 
• Demonstrate the appropriate use of anterior and posterior bite planes in managing vertical discrepancies. 
• Illustrate the digital workflow for designing and fabricating maxillary expanders using CAD/CAM technologies.

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