Soosan Sadeghian; Mahsa Sadat Mortazavi; Mehrnoosh Kazemzadeh; Faegheh Gholinia
Abstract
Background and aim: Today, consideration of soft tissue, esthetic and appropriate facial harmony in patients have been regarded as the base for orthodontic treatments. Therefore, awareness of soft tissue profile changes during growth is essential for orthodontists. The purpose of this study is to determine ...
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Background and aim: Today, consideration of soft tissue, esthetic and appropriate facial harmony in patients have been regarded as the base for orthodontic treatments. Therefore, awareness of soft tissue profile changes during growth is essential for orthodontists. The purpose of this study is to determine the changes of soft tissue profile during growth in both sexes.
Materials and method: In this descriptive-analytical cross-sectional study, lateral cephalometric images of 60 individuals (30 boys and 30 girls) between 8 and 18 years old were studied. Cephalometric analysis was done and Independent T and Pearson Correlation tests were used for data analysis.
Results: Findings in the present study indicated that nose height, nose depth, lips height, upper lip thickness and soft tissue chin thickness increased significantly in the both sexes with increasing age. Increasing lip thickness in point Ls and lower lip thickness in point Li were only significant in boys group, whereas angle of soft tissue facial convexity excluding the nose and lower lip thickness had no significant increase in the both sexes. Angle of soft tissue facial convexity including the nose reduced significantly in both sexes with increasing age.Conclusion: Different measures change variously in males and females between 8 to 18 years old and being aware of these changes will help orthodontist in getting the best decision in preadolescent and adolescent treatment planning.
Valiollah Arash; Sina Haghanifar; Farhad Sobouti; Manouchehr Rahmati Kamel; khalil Barzegar
Abstract
Aim: The objective of this study was to compare and evaluate the effects of two functional appliances including modified activator and modified twin block appliances on the profiles of facial soft tissue. Methods: This study included 30 patients suffering from skeletal class II abnormalities. Participants ...
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Aim: The objective of this study was to compare and evaluate the effects of two functional appliances including modified activator and modified twin block appliances on the profiles of facial soft tissue. Methods: This study included 30 patients suffering from skeletal class II abnormalities. Participants were randomly allocated into one of two treatment groups for functional appliances, the modified twin block group and the modified activator group (ten girls and five boys, with a mean age of 10.4± 0.82 years in the modified twin block group; nine girls and six boys, with a mean age of 9.8± 0.94 years in the modified activator group). The mean duration of treatment was 20.4± 6 months in the modified activator group, and 17.9 ± 5 months in the modified twin block group which included the eight months of aftertreatment maintenance. Data were analyzed using a paired t-test and an independent samples t-test. Results: In the modified activator treatment group, changes in the labiomental angle (p=0.02), the angle of facial convexity (p=0.004), the Ls-S vertical (p=0.034), the distance between the labial surface of the upper central incisor and the upper lip (p=0.012), the Li-E Line (p=0.029), the total anterior facial height (p=0.008) and the pog’-S vertical (p=0.013) were significant. The difference between two groups was significant only in Li-E line.
Conclusion:The effects of modified activators and modified twin block appliances on the soft tissue profile was almost the same, and both resulted in significant alterations to the soft tissue profile.
