【Chris Chang Ortho】CC455.

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.

[@subhash7408]

Great job.❤👌👍

[@MBasha-zk9fe]

Thank you very much for this nice video. .

[@OrthoArt]

Chris! Whats the point of high or low torque braces if you only use max 17x25 wire?

[@anakin430]

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

[@semihcankaya]

in my opinion IZC screw does posterior rotation on upper arch because under the resistance center of maxillary dent.

[@siddharthshah8228]

Why was posterior bite ramp preferred to anterior one in this case