Full-Digital Manni Telescopic Herbst: structural innovation and digital manufacturing

Area of Science:

• Orthodontics
• Biomaterials Engineering
• Digital Dentistry

Background:

• Skeletal Class II malocclusion, often due to mandibular retrusion, is prevalent and challenging to treat.
• Traditional Herbst Appliances can cause dental side effects and mechanical issues.
• A novel, digitally manufactured appliance is needed to improve outcomes.

Purpose of the Study:

• To introduce the structurally innovative Full Digital Manni Telescopic Herbst (MTH) Appliance.
• To detail its digital manufacturing process and clinical benefits.
• To evaluate its effectiveness in treating Class II malocclusion.

Main Methods:

• Utilized a fully digital workflow: CAD/CAM design, intraoral scanning, and additive manufacturing.
• Integrated a full-coverage mandibular splint with precision-engineered components.
• Clinically implemented and evaluated the MTH appliance.

Main Results:

• Demonstrated excellent fit and high mechanical reliability.
• Significantly reduced lower incisor proclination and provided vertical control.
• Minimized complications like debonding and fractures, with digital reproducibility for component replacement.

Conclusions:

• The MTH appliance improves skeletal correction, anchorage, and control of vertical and sagittal dimensions.
• The digital workflow enhances fabrication accuracy, patient comfort, and efficiency.
• This appliance represents a new standard in Class II treatment, combining digital precision and biomechanical efficacy.