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Asymmetric elastics for Class III subdivision

American Journal of Orthodontics and Dentofacial Orthopedics, 2010-12-01, Volume 138, Issue 6, Pages 688-688, Copyright © 2010 American Association of Orthodontists

Congratulations to Dr Janson and his coauthors for their successful treatment of an interesting and complicated case (Janson G, de Freitas MR, Araki J, Franco EJ, Barros SEC. Class III subdivision malocclusion corrected with asymmetric intermaxillary elastics. Am J Orthod Dentofacial Orthop 2010;138:221-30). However, their report raised certain questions and observations.

Considering the title and references in the article regarding asymmetric treatment, I failed to understand the photographs in Figure 4 showing symmetrical use of Class III elastics, particularly since the legend refers to asymmetric Class III elastics. Additionally, the authors stated that the anterior diagonal elastic is not shown but failed to indicate the direction of wear. With apologies for nit-picking, that question arose as a result of my confusion regarding the symmetrical Class III elastics illustrated.

Since a functional shift often accompanies an anterior crossbite, I would like to have read a functional evaluation of the case and to have learned to what extent, if any, mandibular repositioning contributed to the correction.

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It is infinitely easier to be a critic of an article than to be an author and a clinician. So, once again, congratulations on your report and the quality of your results.