International Journal of Oral and Maxillofacial Surgery
Technical NoteOrthognathic SurgeryVirtual model surgery and wafer fabrication for orthognathic surgery
Section snippets
Case report
An 18-year-old male complained of a prognathic mandible. Clinical evaluation, lateral cephalometric analysis and model analysis revealed a concave profile with mandibular protrusion and normodivergent pattern, reverse overjet (–4.0 mm), Class III molar relationship, upper and lower arch length discrepancies (–2 mm and –5 mm, respectively) and lower dental midline deviation to the right side (Fig. 1). The patient had a history of fixed orthodontic treatment with non-extraction for 5 years.
The
Discussion
Recently, the concept of 3D-VMS was introduced.1, 8 Song and Baek8 compared the accuracy of model surgery between 3D-VMS and MMS. The errors with 3D-VMS (0.00–0.35 mm) were less than with MMS (0.00–0.94 mm), so they concluded that 3D-VMS was more accurate and clinically acceptable than MMS.8
In the present case, only 3D-CT data and preoperative dental casts with CR bite were needed for 3D-VMS. With the 3D-VMS program (3Txer version 2.0, Orapix), many laboratory based steps including face-bow
Competing interests
None declared.
Funding
None.
Ethical approval
Not required.
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