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January JADA looks at changes in facial profile resulting from orthodontic treatment

January 04, 2017

By Michelle Manchir

No significant difference exists between the changes in patients' facial profiles as a result of orthodontic treatment with and without extraction of four premolars in terms of esthetic outcomes, according to a systematic review published in the January issue of The Journal of the American Dental Association.

Following a review of randomized clinical trials and observational studies comparing the two types of treatment (with and without premolar extraction), researchers concluded that for patients who initially had greater lip protrusion and more convex facial morphologies, premolar extractions tended to be beneficial to the soft tissue structure.

However, patients treated without extractions endured "significantly shorter" duration of orthodontic treatment, according to the article.

"This research will help both clinicians in their decision making, and researchers in preparing new studies," said Dr. Walter Iared, corresponding author of the article and a researcher at the department of emergency medicine and Evidence-Based Medicine at the Federal University of Sao Paulo in Brazil.

The entire article is online.

Other highlights of the January issue of JADA include an article evaluating levels of dentist participation in Medicaid; a systematic review of the efficacy and safety of Chinese patent medicines for recurrent aphthous stomatitis; and a case report about a resection of an ameloblastoma in a pediatric patient and its reconstruction using tissue engineering and costochondral rib graft.

Every month, JADA articles are published online at in advance of print publication. The entire January issue is online.