【Chris Chang Ortho】CC455.
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- čas přidán 27. 08. 2024
- Chris' Top 11 Cases: 3. Full-Cusp CII Malocclusion w/ Bilateral Buccal Crossbite in an Adult
Full-Cusp Class II Malocclusion with Bilateral
Buccal Crossbite (Scissors-Bite) in an Adult
Abstract
Full-cusp Class II malocclusion with posterior buccal crossbite and an overjet exceeding 10mm, usually requires orthognathic surgery for an optimal correction. However, the use of extra-alveolar bone screws for anchorage has expanded the therapeutic envelope for conservative, nonextraction treatment. The dentoalveolar correction was facilitated by a 5-7mm retraction of the entire maxillary arch to achieve a Angle Class I molar relationship. Near ideal dental alignment was accomplished with passive self-ligating brackets, early light short elastics, posterior cross elastics, and bite turbos on lower molars. This challenging malocclusion with a discrepancy index (DI) of 22 was treated in 26 months to a Cast-Radiograph Evaluation (CRE) score of 22 and a Pink & White Esthetic Score of 3. (Int J Ortho Implantol 2015;37:60-79).
Key words:
excessive overjet, Angle Class II molar relationship, OrthoBoneScrew, extra-alveolar miniscrews, posterior buccal crossbite, Damon self-ligating brackets, early light short elastic, posterior criss-cross elastics, posterior bite turbos.
Great job.❤👌👍
Thank you very much for this nice video. .
Chris! Whats the point of high or low torque braces if you only use max 17x25 wire?
How to prevent the "wedge effect" when we do whole arch distalization. The overall superimposition show that SN-MP angle even decreased after using cross elastic to correct the posterior cross-bite. Please let me know hot to control the vertical dimension. Thanks a lot
in my opinion IZC screw does posterior rotation on upper arch because under the resistance center of maxillary dent.
Why was posterior bite ramp preferred to anterior one in this case