Efficiency of Molar Distalization with the XBow Appliance Related to Second Molar Eruption StageReport as inadecuate




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distalization, XBow

McGrath, Lisa C

Supervisor and department: Dr. Flores-Mir Dentistry - Orthodontics

Examining committee member and department: Dr. Paul Major Dentistry Roger Toogood Engineering Dr. Giseon Heo Dentistry

Department: Medical Sciences-Dentistry

Specialization: Orthodontics

Date accepted: 2012-07-31T12:03:31Z

Graduation date: 2012-11

Degree: Master of Science

Degree level: Master's

Abstract: Title: Efficiency of Molar Distalization with the XBow Appliance Related to Second Molar Eruption Stage.Objectives: To make a quantitative evaluation on lateral cephalograms of horizontal, vertical and angular changes in the position of the maxillary first molar when it is distalized with the XBow appliance. Specifically, these changes will be evaluated and compared in the presence and absence of erupted maxillary second molars to determine if there is an optimal time to treat.Methods: Lateral cephalograms were retrospectively obtained at the start and after completion of all active treatment with the XBow appliance. In one group of patients distal movement of the maxillary first molars was performed before the eruption of maxillary second molars; in the other group of patients both first and second maxillary molars were simultaneously moved distally. All cephalograms were superimposed on palatal plane using the method of best-fit. Changes in the position of the maxillary first molar were measured as differences between specific landmarks before and after treatment.Results: A MANOVA revealed that the eruption stage of the maxillary second molar did not have a significant effect on the change in position of the maxillary first molar after treatment with a XBow appliance. Conclusion: When using the XBow appliance in the late-mixed to early-permanent stage of dentition, distalization of the maxillary first molar is likely no more effective before the eruption of the maxillary second molar.

Language: English

DOI: doi:10.7939-R36Q5V

Rights: Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.





Author: McGrath, Lisa C

Source: https://era.library.ualberta.ca/


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University of Alberta Efficiency of Molar Distalization with the XBow Appliance Related to Second Molar Eruption Stage by Lisa Cecilia McGrath A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Orthodontics Medical Sciences - Dentistry ©Lisa Cecilia McGrath Fall 2012 Edmonton, Alberta Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only.
Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the authors prior written permission. Dedication This work is dedicated to Rich and Jaylee. I had the easy part. Abstract Title: Efficiency of Molar Distalization with the XBow Appliance Related to Second Molar Eruption Stage. Objectives: To make a quantitative evaluation on lateral cephalograms of horizontal, vertical and angular changes in the position of the maxillary first molar when it is distalized with the XBow appliance.
Specifically, these changes will be evaluated and compared in the presence and absence of erupted maxillary second molars to determine if there is an optimal time to treat. Methods: Lateral cephalograms were retrospectively obtained at the start and after completion of all active treatment with the XBow appliance.
In one group of patients distal movement of the maxillary first molars was performed before the eruption of maxillary second molars; in the other group of patients both first and second maxillary molars were...





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