scholarly journals Efficiency of compensatory orthodontic treatment of mild Class III malocclusion with two different bracket systems

2017 ◽  
Vol 22 (6) ◽  
pp. 49-55 ◽  
Author(s):  
Mônica L. C. Aragón ◽  
Lívia M. Bichara ◽  
Carlos Flores-Mir ◽  
Guilherme Almeida ◽  
David Normando
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Time ◽  
Peer Assessment ◽  
Randomized Study ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Missed Appointments ◽  
Significant Difference ◽  
Group 2 ◽  
Efficiency Comparison

ABSTRACT Objective: The purpose of this study was to assess the efficiency of compensatory orthodontic treatment of patients with mild Class III malocclusion with two preadjusted bracket systems. Method: Fifty-six matched patients consecutively treated for mild Class III malocclusion through compensatory dentoalveolar movements were retrospectively evaluated after analysis of orthodontic records. The sample was divided into two groups according to the brackets used: Group 1 = non-Class III compensated preadjusted brackets, Roth prescription (n = 28); Group 2 = compensated Class III preadjusted brackets, Capelozza III prescription (n = 28). Cephalometric analysis, number of appointments and missed appointments, months using Class III elastics, and bond/band failures were considered. Treatment time, Peer Assessment Rating (PAR) index at the beginning (PAR T1) and end of treatment (PAR T2) were used to calculate treatment efficiency. Comparison was performed using a MANOVA at p< 0.05. Results: Missed appointments, bond or band failures, number of months using the Class III intermaxillary elastics, and cephalometric measurements showed no statistically significant difference (p> 0.05) between groups. Patients treated with Roth brackets had a treatment time 7 months longer (p= 0.01). Significant improvement in the patient’s occlusion (PAR T2-T1) was observed for both groups without difference (p= 0.22). Conclusions: Orthodontic brackets designed for compensation of mild Class III malocclusions appear to be more efficient than non-compensated straight-wire prescription brackets. Treatment time for Class III patients treated with brackets designed for compensation was shorter than with Roth prescription and no difference in the quality of the occlusal outcome was observed. A prospective randomized study is suggested to provide a deeper look into this subject.

scholarly journals Modern trends in Class III orthognathic treatment: A time series analysis

2016 ◽  
Vol 87 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Chang-Hoon Lee ◽  
Hyun-Hee Park ◽  
Byoung-Moo Seo ◽  
Shin-Jae Lee
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Time Of Surgery ◽  
Series Analysis ◽  
Before And After

ABSTRACT Objective: To examine the current trends in surgical-orthodontic treatment for patients with Class III malocclusion using time-series analysis. Materials and Methods: The records of 2994 consecutive patients who underwent orthognathic surgery from January 1, 2004, through December 31, 2015, at Seoul National University Dental Hospital, Seoul, Korea, were reviewed. Clinical data from each surgical and orthodontic treatment record included patient's sex, age at the time of surgery, malocclusion classification, type of orthognathic surgical procedure, place where the orthodontic treatment was performed, orthodontic treatment modality, and time elapsed for pre- and postoperative orthodontic treatment. Results: Out of the orthognathic surgery patients, 86% had Class III malocclusion. Among them, two-jaw surgeries have become by far the most common orthognathic surgical treatment these days. The age at the time of surgery and the number of new patients had seasonal variations, which demonstrated opposing patterns. There was neither positive nor negative correlation between pre- and postoperative orthodontic treatment time. Elapsed orthodontic treatment time for both before and after Class III orthognathic surgeries has been decreasing over the years. Conclusion: Results of the time series analysis might provide clinicians with some insights into current surgical and orthodontic management.

scholarly journals Factors influencing orthodontic treatment time for non-surgical Class III malocclusion

2016 ◽  
Vol 24 (5) ◽  
pp. 431-436 ◽  
Author(s):  
Lívia Monteiro Bichara ◽  
Mônica Lídia Castro de Aragón ◽  
Gustavo Antônio Martins Brandão ◽  
David Normando
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Factors Influencing

Dentocraniofacial Morphology of 12 Japanese Subjects with Unilateral Cleft Lip and Palate with a Severe Class III Malocclusion: A Cephalometric Study at the Pretreatment Stage of Surgical Orthodontic Treatment

2001 ◽  
Vol 38 (6) ◽  
pp. 597-605 ◽  
Author(s):  
Chizu Tateishi ◽  
Keiji Moriyama ◽  
Teruko Takano-Yamamoto
Keyword(s):  
Orthodontic Treatment ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Effective Length ◽  
Maxillary Incisor ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Group 2 ◽  
Japanese Male Subjects ◽  
Male Subjects

Objective: The present study clarifies the dentocraniofacial morphology of patients with cleft lip and palate (CLP) with severe Class III malocclusion prior to surgical orthodontic treatment. Methods: The sample was 12 Japanese male subjects with repaired complete unilateral CLP (surgical CLP group; 21.2 ± 1.92 years in mean age). Two sets of patients without CLP Class III malocclusion, consisting of 19 male subjects treated by surgical orthodontic treatment (surgical Class III group; 23.4 ± 6.35 years in mean age) and 14 male subjects treated by nonsurgical orthodontic treatment (nonsurgical Class III group; 18.7 ± 3.49 years in mean age) were used as controls. Analyses were performed using lateral and posteroanterior (P-A) cephalograms. Results: (1) The surgical CLP group showed significantly smaller values for overjet, SNA angle, and inclination of the maxillary incisor as compared with those of the surgical and nonsurgical Class III controls. The values of SNB, mandibular effective length, and ramus height in the surgical CLP group were significantly smaller than those of the surgical Class III group but were similar to those of the nonsurgical Class III group. (2) The mandible and the upper and lower dental arches deviated laterally toward the cleft side. The displacement of the mandible was correlated with that of the maxilla. These results show that CLP patients who required surgical orthodontic treatment had a characteristic dentocraniofacial morphology, compared to controls without CLP with Class III malocclusion.

scholarly journals Comparison of Profile Attractiveness between Class III Orthodontic Camouflage and Predictive Tracing of Orthognathic Surgery

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Mohamad Nagi Bou Wadi ◽  
Karina Maria Salvatore Freitas ◽  
Daniel Salvatore Freitas ◽  
Rodrigo Hermont Cançado ◽  
Renata Cristina Gobbi de Oliveira ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Growth Patterns ◽  
Sample Population ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Subjective Analysis ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
The Mean

Objective. The aim of this study was to compare the profile attractiveness between orthodontic camouflage of the Class III malocclusion and the predictive tracing simulating orthognathic surgery evaluated by dentists and laypeople. Settings and sample population. The sample consisted of 21 patients (9 male; 12 female) with Class III malocclusion treated with orthodontic camouflage and Class III intermaxillary elastics. Material and Methods. The mean initial age of the patients was 24.38 years (SD 3.32), and the mean ANB angle was −1.91° (SD 0.83°). Patients presented skeletal Class III and normal growth patterns. Initial and final lateral cephalograms of each patient were used. The initial cephalogram was used to perform the treatment simulation of orthognathic surgery, and its silhouette was compared to the silhouette obtained from the final cephalogram after Class III orthodontic camouflage. A subjective analysis of profile attractiveness was performed by 47 laypeople and 60 dentists, with scores from 1 (less attractive) to 10 (most attractive). Mann–Whitney tests were used to compare profile attractiveness between the orthodontic treatment and the predictive tracing groups and between dentists and laypeople. Results. The predictive tracing of orthognathic surgery showed to be statistically significantly more attractive (mean score 4.57, SD 2.47) than that of the Class III camouflage orthodontic treatment (mean score 4.22, SD 2.40), with a mean numerical but significant difference of 0.35 (SD 2.01) (P<0.001). Laypeople were more critical than dentists in evaluating profile attractiveness, but numerical difference between the groups was also small. Conclusion. The profile silhouette of predictive tracing simulating orthognathic surgery showed to be more attractive than that of Class III camouflage orthodontic treatment; however, differences were small but statistically significant. Laypeople showed to be more critical than dentists.

scholarly journals Lip Morphological Changes and Differences before and after Orthodontic Treatment

2013 ◽  
Vol 1 (1) ◽  
pp. 5-12
Author(s):  
MR Islam ◽  
T Kitahara ◽  
L Naher ◽  
A Nakasima ◽  
I Takahashi
Keyword(s):  
Adult Female ◽  
Orthodontic Treatment ◽  
Morphological Changes ◽  
Class Ii ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Female Patients ◽  
Significant Difference ◽  
Before And After

Objectives: The objective of this study is to test the hypothesis that there is a difference in the morphology of the lips of Class II div 1 and Class III malocclusion, before and after orthodontic treatment. Methods: The sample subjects included 20 adult female patients with Angle Class II div 1 malocclusion and 30 adult female patients with dento-skeletal Class III malocclusion. Frontal photographs were taken both before and after orthodontic and/or orthognathic treatment. Thirty-five landmarks were placed on each tracing made from the photograph. Thereafter, landmarks were digitized into an x and y coordinates system with the subnasal point as the origin. The Class II pretreatment and posttreatment groups of rest and smile conditions were compared with the Class III group respectively, using t-tests. Results: In the Class II pretreatment group, upper and lower lips positioned downward than that in the Class III group. When smiling, there was no statistically significant difference between the two groups before treatment, whereas after orthodontic treatment both Class II and Class III groups showed the significant difference at rest and on smiling conditions. On smiling condition Class III group showed more upwards and lateral movement of the mouth corners than Class II group. Conclusion: Orthodontic treatment induced larger amount in movement of lips at smiling in both Class II and III patients, which may reflect the emotional changes in the patients after treatment. DOI: http://dx.doi.org/10.3329/bjodfo.v1i1.15971 Ban J Orthod & Dentofac Orthop, October 2010; Vol-1, No.1, 5-12

scholarly journals The effect of changes in primary attending doctor coverage frequency on orthodontic treatment time and results

2015 ◽  
Vol 85 (6) ◽  
pp. 1051-1056 ◽  
Author(s):  
Emily Caskey Peppers ◽  
V. Leroy Leggitt ◽  
Joseph M. Caruso ◽  
Roland Neufeld ◽  
James Green
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Time ◽  
Peer Assessment ◽  
Missed Appointments ◽  
Treatment Results ◽  
Patient Age ◽  
Quality Of Treatment ◽  
The Mean ◽  
Peer Assessment Rating

ABSTRACT Objective:  To determine whether changes in primary attending (PA) doctor coverage frequency caused an increase in orthodontic treatment time or a decrease in the quality of treatment results in a postgraduate orthodontic clinic. The effect of T1 Peer Assessment Rating (PAR) scores on PA doctor coverage frequency, treatment times, and results was also evaluated. Materials and Methods:  A sample of 191 postorthodontic subjects was divided into three groups based on PA doctor coverage (high, medium, or low). Treatment times, treatment results, and other variables were compared between the three PA coverage groups. Additionally, the sample was divided into three groups based on T1 PAR scores. Attending coverage frequency, treatment times, and results were compared between the T1 PAR groups. Results:  No statistically significant differences were found in treatment time (P  =  .128) or results (P  =  .052). There were no statistically significant differences in the mean scores for T1 PAR (P  =  .056), T2 PAR (P  =  .602), patient age at T1 (P  =  .747), total appointments (P  =  .128), missed appointments (P  =  .177), or cancelled appointments (P  =  .183). Statistically significant differences were found between the low T1 PAR group and the medium and high T1 PAR groups (attending coverage, P  =  .008; results, P &lt; .001; treatment time, P  =  .001). Conclusions:  Under the conditions of this study, variations in PA doctor coverage frequency did not lengthen orthodontic treatment or reduce the quality of treatment results. Low T1 PAR scores were associated with less PA coverage, less change in PAR, and shorter treatment times.

scholarly journals Prevalence of Malocclusion and Orthodontic Treatment Needs in Down Syndrome Sudanese Individuals

2014 ◽  
Vol 4 (2) ◽  
pp. 32-36
Author(s):  
Hiba A. Ibrahim ◽  
Amal H. Abuaffan
Keyword(s):  
Down Syndrome ◽  
Orthodontic Treatment ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Treatment Needs ◽  
Angle Class ◽  
Alpha Level ◽  
History Of ◽  
Angle Class Iii Malocclusion ◽  
Angle Class Iii

Objective: To determine prevalence of malocclusion and orthodontic treatment needs in Down syndrome individuals among Sudanese population in Khartoum area.Materials & Method: A total of 75 (37 males and 38 females) Down syndrome individuals age ranging from 6-28 years were clinically examined after obtaining their guardian’s consent, malocclusion was determined based on Angle and Incisor classification. Exclusion criteria were included individuals who had history of extraction and orthodontic treatment.Data was analysed by using SPSS Version 17, at an alpha level 0.05 and 95% confidence limits.Result: Angle Class III and Incisor III malocclusion represents the most prevalent type of malocclusions (58.7%) Angle classification, (53.3%) Incisors classification. Angle Class III malocclusion was more frequent among females (60.5%) than in males (56.8%). Themajority of individuals with Down syndrome are in need of orthodontic treatment (85.3%).Conclusion: The prevalence of malocclusion and orthodontic treatment need among Sudanese Down syndrome individuals was high. Angle and Incisor Class III malocclusion representing commonest trait of malocclusion with more frequency in femalesthan males.Key word: down syndrome, Class III malocclusion, orthodontic treatment

scholarly journals Treatment time, outcome, and anchorage loss comparisons of self-ligating and conventional brackets

2012 ◽  
Vol 83 (2) ◽  
pp. 280-285 ◽  
Author(s):  
Ferdinand M. Machibya ◽  
Xingfu Bao ◽  
Lihua Zhao ◽  
Min Hu
Keyword(s):  
Treatment Time ◽  
Peer Assessment ◽  
Steel Wire ◽  
Skeletal Changes ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Conventional Brackets ◽  
Orthodontic Patients ◽  
Anchorage Loss ◽  
Mandibular Incisors

ABSTRACT Objective: To compare the treatment time, outcome, and anchorage loss among orthodontic patients treated by self-ligating brackets (SLBs) and conventional brackets (CBs). Materials and Methods: A retrospective cohort study compared 34 patients (SLB group) treated by SmartClip brackets (3M Unitek, Monrovia, Calif) to 35 patients (CB group) treated by conventional preadjusted Victory series brackets (3M Unitek) and ligated by stainless steel wire ligatures. Pretreatment (T1) and posttreatment (T2) lateral cephalograms were traced and analyzed using Pancherz sagittal-occlusion analysis to obtain skeletal and dental changes in the maxilla and the mandible. The dental cast models were assessed by the Peer Assessment Rating (PAR) Index for the treatment outcomes. Results: The mean treatment time for SLBs (19.19 months) did not show a statistically significant difference from 21.25 months of CBs; the treatment time and pretreatment PAR scores were strongly correlated. There was no difference in anchorage loss between the SLB and CB groups. There were significant dental and skeletal changes among adolescent orthodontic patients regardless of the bracket used. The lingual inclination of the mandibular incisors in the CB group was 3.62° more than in the SLB group (P &lt; .01). Conclusions: The treatment time and anchorage loss are not influenced by the type of bracket used. There are significant dental and skeletal changes among adolescent orthodontic patients regardless of the bracket used. There is significantly greater lingual inclination of mandibular incisors in the CB group than in the SLB group.

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