Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction
Background: Facial asymmetries are common in patients with skeletal class III malocclusion and posterior crossbite. Maxillary expansion and protraction (ME&P) and then fixed orthodontic treatment may affect positively on these asymmetries.Objectives: We aimed to investigate the effects of ap...
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University of Anbar
2023-06-01
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| Series: | Al-Anbar Medical Journal |
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| Online Access: | https://amj.uoanbar.edu.iq/article_177947_39c1945b8d181362dd54d4bf529ee238.pdf |
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| author | Nisreen M. Saleh Neslihan Senisik Luay Zaidan |
| author_facet | Nisreen M. Saleh Neslihan Senisik Luay Zaidan |
| author_sort | Nisreen M. Saleh |
| collection | DOAJ |
| description | Background: Facial asymmetries are common in patients with skeletal class III malocclusion and posterior crossbite. Maxillary expansion and protraction (ME&P) and then fixed orthodontic treatment may affect positively on these asymmetries.Objectives: We aimed to investigate the effects of applying ME&P by the rapid maxillary expansion (RME) and face mask and then fixed orthodontic treatment on soft tissue asymmetries in adolescent patients with skeletal class III malocclusion and posterior crossbite. For this purpose, the 3D facial imaging system of stereophotogrammetric (3dMD) recordings was analyzed quantitatively in the pre-treatment (T0), ME&P (T1), and post-fixed orthodontic treatment periods (T2). Materials and methods: The study included 28 (11 females, 17 males) individuals with skeletal class III malocclusion and posterior cross-bite (5 patients with bilateral and 23 patients with unilateral cross-bite) and soft tissue facial convexity angle of 175.11º±1.06º with a mean age of 9.37 ± 0.54 years. Three-dimensional photographs were taken from the individuals before the ME&P (T0), 6 months after the ME&P procedure and before starting fixed orthodontic treatment (T1), and after removing all orthodontic appliances from the mouth at the end of the fixed orthodontic treatment (T2). 3dMD Vultus® software was used to evaluate the data of 34 linear and 16 volumetric as a total of 50 measurements in soft tissue analysis.Results: The right-left volume differences, the Root Mean Square (RMS) values, and linear width measurements in the upper, mid, and lower face regions when evaluated at the T1-T0, T2-T1, and T2-T0 period intervals, were found to a decrease in these values and improvement of asymmetry.Conclusion: The asymmetry in the soft tissue in all face regions was corrected with ME&P and fixed orthodontic treatment. The most obvious asymmetry improvement occurs in the lower face area. It should be taken into consideration that asymmetry will improve with RME and face mask application and fixed orthodontic treatment in adolescents with Class III malocclusion and posterior cross-bite and treatment planning should be done according to that. |
| format | Article |
| id | doaj-art-6c2dfb1c181c48fca3e22034876e2437 |
| institution | DOAJ |
| issn | 2706-6207 2664-3154 |
| language | English |
| publishDate | 2023-06-01 |
| publisher | University of Anbar |
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| series | Al-Anbar Medical Journal |
| spelling | doaj-art-6c2dfb1c181c48fca3e22034876e24372025-08-20T02:49:19ZengUniversity of AnbarAl-Anbar Medical Journal2706-62072664-31542023-06-01191242910.33091/amj.2023.177947177947Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and ProtractionNisreen M. Saleh0Neslihan Senisik1Luay Zaidan2Ramadi First Sector for Healthcare, Al-Anbar Health Directorate, Ramadi, Anbar, IraqDepartment of Orthodontics, Faculty of Dentistry, Suleyman Demirel University, Isparta, TurkeyRamadi First Sector for Healthcare, Al-Anbar Health Directorate, Ramadi, Anbar, Iraq.Background: Facial asymmetries are common in patients with skeletal class III malocclusion and posterior crossbite. Maxillary expansion and protraction (ME&P) and then fixed orthodontic treatment may affect positively on these asymmetries.Objectives: We aimed to investigate the effects of applying ME&P by the rapid maxillary expansion (RME) and face mask and then fixed orthodontic treatment on soft tissue asymmetries in adolescent patients with skeletal class III malocclusion and posterior crossbite. For this purpose, the 3D facial imaging system of stereophotogrammetric (3dMD) recordings was analyzed quantitatively in the pre-treatment (T0), ME&P (T1), and post-fixed orthodontic treatment periods (T2). Materials and methods: The study included 28 (11 females, 17 males) individuals with skeletal class III malocclusion and posterior cross-bite (5 patients with bilateral and 23 patients with unilateral cross-bite) and soft tissue facial convexity angle of 175.11º±1.06º with a mean age of 9.37 ± 0.54 years. Three-dimensional photographs were taken from the individuals before the ME&P (T0), 6 months after the ME&P procedure and before starting fixed orthodontic treatment (T1), and after removing all orthodontic appliances from the mouth at the end of the fixed orthodontic treatment (T2). 3dMD Vultus® software was used to evaluate the data of 34 linear and 16 volumetric as a total of 50 measurements in soft tissue analysis.Results: The right-left volume differences, the Root Mean Square (RMS) values, and linear width measurements in the upper, mid, and lower face regions when evaluated at the T1-T0, T2-T1, and T2-T0 period intervals, were found to a decrease in these values and improvement of asymmetry.Conclusion: The asymmetry in the soft tissue in all face regions was corrected with ME&P and fixed orthodontic treatment. The most obvious asymmetry improvement occurs in the lower face area. It should be taken into consideration that asymmetry will improve with RME and face mask application and fixed orthodontic treatment in adolescents with Class III malocclusion and posterior cross-bite and treatment planning should be done according to that.https://amj.uoanbar.edu.iq/article_177947_39c1945b8d181362dd54d4bf529ee238.pdffacial asymmetriesstereophotogrammetryclass iii malocclusionposterior cross-bitemaxillary expansion and protraction |
| spellingShingle | Nisreen M. Saleh Neslihan Senisik Luay Zaidan Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction Al-Anbar Medical Journal facial asymmetries stereophotogrammetry class iii malocclusion posterior cross-bite maxillary expansion and protraction |
| title | Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction |
| title_full | Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction |
| title_fullStr | Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction |
| title_full_unstemmed | Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction |
| title_short | Evaluation of Orthodontic Treatment Success in Terms of Symmetry in Patients with Class III Malocclusion after Maxillary Expansion and Protraction |
| title_sort | evaluation of orthodontic treatment success in terms of symmetry in patients with class iii malocclusion after maxillary expansion and protraction |
| topic | facial asymmetries stereophotogrammetry class iii malocclusion posterior cross-bite maxillary expansion and protraction |
| url | https://amj.uoanbar.edu.iq/article_177947_39c1945b8d181362dd54d4bf529ee238.pdf |
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