EBO Case Presentation – Premolar Extractions and T-Loop Mechanics in Class II Correction

In this European Board of Orthodontics case presentation, Dr Caroline Vecchione (France) presents the treatment of a 15-year-old patient with Class II Division 1 malocclusion, bimaxillary protrusion, mandibular retrusion and a unilateral crossbite. The case explores treatment planning without surgery, premolar extractions, segmented mechanics, T-loop space closure, and retention, highlighting the value of careful case analysis and clinical reflection.

Learning outcomes:

• Understand the diagnostic and treatment planning considerations for a Class II Division 1 case with bimaxillary protrusion, mandibular retrusion and transverse discrepancy.
• Explore the use of premolar extractions, segmented mechanics, maxillary expansion and T-loop space closure in non-surgical orthodontic camouflage treatment.
• Evaluate the clinical decision-making involved when orthognathic surgery is declined and treatment objectives must be adapted accordingly.
• Appreciate the role of retention planning and long-term stability assessment in supporting reflective clinical practice.

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