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Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance

BACKGROUND: The objectives of this study were to check the reliability of the five angular and two linear parameters for sagittal maxillo-mandibular discrepancy and to compare and correlate angular parameters with the ANB angle, and the linear parameter with Wits analysis. METHODS: The pre-treatment...

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Autores principales: Trivedi, Rahul, Bhattacharya, Amit, Mehta, Falguni, Patel, Dolly, Parekh, Harshik, Gandhi, Vaibhav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385035/
https://www.ncbi.nlm.nih.gov/pubmed/25769138
http://dx.doi.org/10.1186/s40510-015-0073-1
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author Trivedi, Rahul
Bhattacharya, Amit
Mehta, Falguni
Patel, Dolly
Parekh, Harshik
Gandhi, Vaibhav
author_facet Trivedi, Rahul
Bhattacharya, Amit
Mehta, Falguni
Patel, Dolly
Parekh, Harshik
Gandhi, Vaibhav
author_sort Trivedi, Rahul
collection PubMed
description BACKGROUND: The objectives of this study were to check the reliability of the five angular and two linear parameters for sagittal maxillo-mandibular discrepancy and to compare and correlate angular parameters with the ANB angle, and the linear parameter with Wits analysis. METHODS: The pre-treatment and post-functional lateral cephalograms of 25 subjects (17 males, 8 females) with class II division 1 malocclusion treated with twin block functional appliance were selected. Five angular (ANB, β angle, APDI, YEN angle, W angle) and two linear (Wits analysis, App-Bpp) parameters were traced on both sets of cephalograms. Paired Student’s t-test, one-way ANOVA, post hoc test, and Karl Pearson correlation statistical analysis were performed. RESULTS: All the parameters considered in our study showed highly significant difference in pre-treatment and post-functional values, suggesting their reliability (p < 0.0001). When ANB angle was compared with the other angular parameters, a highly significant change in the mean value of the difference in pre-treatment (T1) and post-functional (T2) values was noted (p < 0.001). No significant change was seen when comparing the mean value of the difference in T1 and T2 between linear parameters (p = 0.949). CONCLUSIONS: All the parameters used in the study can be reliably used to assess anteroposterior skeletal discrepancy. Whenever limitations of the ANB angle and Wits analysis are foreseen, the W angle and App-Bpp, respectively, can be reliably used. The YEN angle may reliably predict the post-functional change with the use of twin block appliance.
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spelling pubmed-43850352015-04-05 Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance Trivedi, Rahul Bhattacharya, Amit Mehta, Falguni Patel, Dolly Parekh, Harshik Gandhi, Vaibhav Prog Orthod Research BACKGROUND: The objectives of this study were to check the reliability of the five angular and two linear parameters for sagittal maxillo-mandibular discrepancy and to compare and correlate angular parameters with the ANB angle, and the linear parameter with Wits analysis. METHODS: The pre-treatment and post-functional lateral cephalograms of 25 subjects (17 males, 8 females) with class II division 1 malocclusion treated with twin block functional appliance were selected. Five angular (ANB, β angle, APDI, YEN angle, W angle) and two linear (Wits analysis, App-Bpp) parameters were traced on both sets of cephalograms. Paired Student’s t-test, one-way ANOVA, post hoc test, and Karl Pearson correlation statistical analysis were performed. RESULTS: All the parameters considered in our study showed highly significant difference in pre-treatment and post-functional values, suggesting their reliability (p < 0.0001). When ANB angle was compared with the other angular parameters, a highly significant change in the mean value of the difference in pre-treatment (T1) and post-functional (T2) values was noted (p < 0.001). No significant change was seen when comparing the mean value of the difference in T1 and T2 between linear parameters (p = 0.949). CONCLUSIONS: All the parameters used in the study can be reliably used to assess anteroposterior skeletal discrepancy. Whenever limitations of the ANB angle and Wits analysis are foreseen, the W angle and App-Bpp, respectively, can be reliably used. The YEN angle may reliably predict the post-functional change with the use of twin block appliance. Springer Berlin Heidelberg 2015-02-25 /pmc/articles/PMC4385035/ /pubmed/25769138 http://dx.doi.org/10.1186/s40510-015-0073-1 Text en © Trivedi et al.; licensee springer. 2015 This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Research
Trivedi, Rahul
Bhattacharya, Amit
Mehta, Falguni
Patel, Dolly
Parekh, Harshik
Gandhi, Vaibhav
Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title_full Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title_fullStr Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title_full_unstemmed Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title_short Cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
title_sort cephalometric study to test the reliability of anteroposterior skeletal discrepancy indicators using the twin block appliance
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385035/
https://www.ncbi.nlm.nih.gov/pubmed/25769138
http://dx.doi.org/10.1186/s40510-015-0073-1
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