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Vertical Skeletal Changes after Extraction and Nonextraction Orthodontic Treatment.
Hafiza Z Shafique1, Rumeesha Zaheer1, Abdullah Jan1
1Orthodontics Department, Armed Forces Institute of Dentistry, Rawalpindi, Pakistan.
European Journal of Dentistry
|July 5, 2022
Summary
Orthodontic premolar extractions significantly increase vertical dimensions compared to nonextraction cases. This study highlights the impact of extraction on facial growth, particularly in borderline patients.
Area of Science:
- Orthodontics
- Dentofacial Orthopedics
- Cephalometric Analysis
Background:
- Orthodontic extraction remains a controversial topic in clinical practice.
- Assessing the impact of premolar extractions on vertical facial dimensions is crucial for treatment planning.
Purpose of the Study:
- To compare changes in vertical dimensions between patients undergoing orthodontic premolar extractions and those treated without extractions.
- To evaluate the cephalometric effects of orthodontic treatment with and without premolar extractions on vertical facial growth.
Main Methods:
- A sample of 60 borderline patients were divided into extraction and nonextraction groups.
- Pretreatment and posttreatment cephalometric measurements were recorded and analyzed.
- Statistical comparisons included paired t-tests, independent t-tests, and F-tests.
Main Results:
- The extraction group showed significant increases in mandibular plane angle, palatal plane angle, Frankfort mandibular plane angle, and y-axis.
- Posttreatment, the sella nasion-gonion-gnathion angle, total anterior facial height, and lower anterior facial height were significantly greater in the extraction group.
- The Jarabak ratio was significantly lower in the extraction group compared to the nonextraction group.
Conclusions:
- Orthodontic premolar extractions lead to a significant increase in vertical dimension compared to nonextraction treatment.
- These findings underscore the substantial impact of orthodontic extractions on the vertical facial skeletal pattern.
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