Premolar extraction in orthodontics: Does it have any effect on patient's facial height?

Journal of International Society of Preventive & Community Dentistry
Abdol-Hamid Zafarmand, Mohamad-Mahdi Zafarmand

Abstract

Facial esthetics is an important part of the orthodontic treatment. Many cases frequently require premolar extraction, either for relief of crowding or for profile change. Supposedly, extraction provides some vertical reduction. This investigation challenges the clinical effects of such treatment protocols. This was a retrospective and quasi-experimental study. Records of 60 patients in their post-pubertal age were randomly selected for this study. The criteria for case selection were: Class II Division I malocclusion with either two upper or four upper and lower first premolars extraction. Patients were not vertical-sensitive type of face. Pre- and post-treatment X-rays were scanned and digitized with Dolphin V 10.0 software. The X-rays of both groups were compared based upon the following cephalometric measurements: Lower anterior facial height (LAFH), Me-PP, Pal-MeGe, LAFH/total anterior facial height (TAFH) × 100, upper anterior facial height (UAFH)/TAFH × 100, U6 to PP, L6 to MP, and U6D-PTV. In the four bicuspid group, a statistically significant increase was observed in all measurements: 2.53 mm increase in LAFH (P ≤ 0.04), 2.92 mm increase in Me-PP (P ≤ 0.01), 0.65° increase in Pal-MeGe (P ≤ 0.02), 0.66° increase in LAF...Continue Reading

References

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Citations

Mar 24, 2016·Dental press journal of orthodontics·Camila de S DardengoJonas Capelli Júnior
Nov 22, 2017·Dental press journal of orthodontics·Shuka MoshiriKi Beom Kim
May 10, 2020·Dentistry Journal·Antonino Lo GiudiceRiccardo Nucera

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SPSS
Dolphin V
MeGo
Pal

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