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Case Presentation: Impacted cuspids with Wilson 3D Bimetric Distalizing Arch

Case Details

Class I skeletal case with 1/2 cusp Cl II molar occlusion with excessive overjet (6mm) and excessive overbite. Large maxillary lateral incisors and bilateral facially impacted maxillary cuspids.

Doctor Name: Paul R. Robinson, DMD
Doctor Location: Grapevine, Texas
Age: 13
Gender: male
Start Date: 2009-02
End Date: 2011-03
Class: 2
Treatment Plan: Place full lower arch appliances (RMO synergy brackets) and limited maxillary appliances (Bracket U 1’s and Band U 6’s) ; The plan involved utilizing a Wilson 3D Bimetric Maxillary Distalizing arch and excellent elastic wear to distalize the 6’s without proclination of the U 1’s; Typically, I will bond the U 2’s when utilizing the Wilson arch, but it was decided not to bond the U 2’s in this case due to their protrusion related to the proximity of their root apices with the impacted U 3’s. Excellent elastic cooperation was needed by the patient in this scenario to prevent excessive proclination of the U 1’s. Following achievement of a super Class I molar with Wilson arch, the U 4’s and 5’s were bonded and were retracted individually against a round SS wire with circle stops at the mesial of the U 6 bands to maintain anchorage; Class II elastics from the U 4’s to L 7’s were utilized during bicuspid retraction; After the bicuspids were fully retracted, the U 3’s were exposed and traction was placed to distalize these teeth into the spaces created with the Wilson arch and elastics. After the 3’s were clear of the root apices of the U 2’s, these teeth were bonded and aligned with an auxiliary NiTi wire; Alignment was completed and proper overbite and overjet were achieved. No interproximal reduction was performed for the oversized maxillary lateral incisors, since the patient was happy with the esthetics of the case and the occlusion fit well.
Products Used:
  • Accessories
  • Nickel Titanium Wire
  • Synergy Brackets
  • Wilson