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Changes in soft tissue profile after orthodontic treatment with and without extractions
1Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. ikocadereli@hotmail.com
Summary
Orthodontic treatment for Angle Class I malocclusion using first premolar extractions resulted in more retruded upper and lower lips compared to non-extraction cases. This finding impacts facial profile considerations in orthodontic planning.
Area of Science:
- Dentistry
- Orthodontics
- Facial Profile Analysis
Background:
- Orthodontic treatment aims to correct malocclusions and improve facial aesthetics.
- The decision to extract teeth, specifically first premolars, is a common consideration in orthodontic treatment planning for Angle Class I malocclusions.
- Understanding the impact of extraction versus non-extraction on soft tissue facial profiles is crucial for achieving optimal treatment outcomes.
Purpose of the Study:
- To compare the soft tissue facial profile changes in Angle Class I malocclusions treated with and without the extraction of four first premolars.
- To evaluate the specific effects of first premolar extraction on lip position within the facial profile.
- To provide data-driven insights for orthodontists regarding treatment decisions and their aesthetic consequences.
Main Methods:
- A retrospective study involving 80 patients diagnosed with Angle Class I malocclusion.
- Patients were divided into two groups: 40 treated with extraction of maxillary and mandibular first premolars, and 40 treated without extractions.
- Lateral cephalometric radiographs were analyzed before and after orthodontic treatment to assess soft tissue changes.
Main Results:
- Patients who underwent first premolar extraction exhibited significantly more retruded upper and lower lips post-treatment compared to the non-extraction group.
- Soft tissue analysis revealed distinct differences in lip prominence between the two treatment modalities.
- No significant differences were noted in other soft tissue parameters, highlighting lip position as a key differentiator.
Conclusions:
- Extraction of the four first premolars in Angle Class I malocclusion treatment leads to a more retruded soft tissue profile, particularly affecting lip position.
- Orthodontists should carefully consider the potential for lip retrusion when planning extraction treatments for Class I malocclusions.
- These findings contribute to a better understanding of the cephalometric and aesthetic outcomes associated with different orthodontic approaches.