TY - JOUR
T1 - Comparison of early treatment outcomes rendered in three different types of malocclusions
AU - Pangrazio-Kulbersh, Valmy
AU - Kang, He Kyong
AU - Dhawan, Archana
AU - Al-Qawasmi, Riyad
AU - Pacheco, Rafael Rocha
N1 - Publisher Copyright:
© 2018 by The EH Angle Education and Research Foundation, Inc.
PY - 2018/5
Y1 - 2018/5
N2 - Objective: To evaluate the outcome of early treatment in Class I, II, and III malocclusions based on the reduction of weighted Peer Assessment Rating (PAR) scores. Materials and Methods: Two hundred thirty subjects (female ¼ 105; male ¼ 125) selected from 400 cases were divided into three groups based on their malocclusions (Class I, II, and III). The PAR index was evaluated prior to early treatment (T0), at the end of phase I (T1), and after completion of phase II therapy (T2). The reliability of overall PAR scores was assessed by Bland-Altman plot and intraclass correlation coefficient. The starting age, total weighted PAR scores and their changes after phase I and II treatments, treatment time, and the percentage of correction in the three different malocclusions were assessed by repeated-measures analysis of variance with post hoc analysis. The level of significance was set at P, .05. Results: More than 30% reduction of the weighted PAR scores and less than 10 points of the remaining weighted PAR scores were observed in all malocclusion groups at T1. The Class III group had the highest percentage of correction during phase I treatment. Conclusions: Early treatment effectively reduced the complexity of Class I, II, and III malocclusions and accounted for 57%, 64%, and 76% of the total correction, respectively, after phase I treatment, as indicated by an overall reduction in weighted PAR scores. The Class III group responded most favorably to early treatment followed by the Class II group. (Angle Orthod. 2018;88:253-258).
AB - Objective: To evaluate the outcome of early treatment in Class I, II, and III malocclusions based on the reduction of weighted Peer Assessment Rating (PAR) scores. Materials and Methods: Two hundred thirty subjects (female ¼ 105; male ¼ 125) selected from 400 cases were divided into three groups based on their malocclusions (Class I, II, and III). The PAR index was evaluated prior to early treatment (T0), at the end of phase I (T1), and after completion of phase II therapy (T2). The reliability of overall PAR scores was assessed by Bland-Altman plot and intraclass correlation coefficient. The starting age, total weighted PAR scores and their changes after phase I and II treatments, treatment time, and the percentage of correction in the three different malocclusions were assessed by repeated-measures analysis of variance with post hoc analysis. The level of significance was set at P, .05. Results: More than 30% reduction of the weighted PAR scores and less than 10 points of the remaining weighted PAR scores were observed in all malocclusion groups at T1. The Class III group had the highest percentage of correction during phase I treatment. Conclusions: Early treatment effectively reduced the complexity of Class I, II, and III malocclusions and accounted for 57%, 64%, and 76% of the total correction, respectively, after phase I treatment, as indicated by an overall reduction in weighted PAR scores. The Class III group responded most favorably to early treatment followed by the Class II group. (Angle Orthod. 2018;88:253-258).
KW - Early treatment
KW - Occlusal changes
KW - PAR index
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U2 - 10.2319/091417-618.1
DO - 10.2319/091417-618.1
M3 - Article
C2 - 29513021
AN - SCOPUS:85046158632
SN - 0003-3219
VL - 88
SP - 253
EP - 258
JO - Angle Orthodontist
JF - Angle Orthodontist
IS - 3
ER -