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 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 The duration of pubertal growth peak among three skeletal classes

2016 ◽  
Vol 21 (5) ◽  
pp. 67-74 ◽  
Author(s):  
Waqar Jeelani ◽  
◽  
Mubassar Fida ◽  
Attiya Shaikh ◽  
◽  
...  
Keyword(s):  
Class Ii ◽  
Growth Potential ◽  
Class I ◽  
Maturation Stage ◽  
Class Iii ◽  
Pubertal Growth ◽  
Lateral Cephalograms ◽  
Wide Range ◽  
Significant Difference ◽  
The Mean

ABSTRACT Introduction: Pubertal growth peak is closely associated with a rapid increase in mandibular length and offers a wide range of therapeutic modifiability. Objective: The aim of the present study was to determine and compare the mean ages of onset and duration of pubertal growth peak among three skeletal classes. Methods: A retrospective cross-sectional study was conducted using lateral cephalograms of 230 subjects with growth potential (110 males, 120 females). Subjects were categorized into three classes (Class I = 81, Class II = 82, Class III = 67), according to the sagittal relationship established between the maxilla and the mandible. The cervical vertebral maturation stage was recorded by means of Baccetti's method. The mean ages at CS3 and CS4 and the CS3-CS4 age interval were compared between boys and girls and among three skeletal classes. Results: Pubertal growth peak occurred on average four months earlier in girls than boys (p = 0.050). The average duration of pubertal growth peak was 11 months in Class I, seven months in Class II and 17 months in Class III subjects. Interclass differences were highly significant (Cohen's d > 0.08). However, no significant difference was found in the timing of pubertal growth peak onset among three skeletal classes (p = 0.126 in boys, p = 0.262 in girls). Conclusions: Girls enter pubertal growth peak on average four months earlier than boys. Moreover, the duration of pubertal growth peak is on average four months shorter in Class II and six months longer in Class III subjects as compared to Class I subjects.

scholarly journals The effects of tongue plate and tongue appliance on maxillary deficiency in growing patients

2020 ◽  
Vol 7 (4) ◽  
pp. 259-267
Author(s):  
Jamilian Abdolreza ◽  
◽  
Nucci Ludovica ◽  
Amini Ehsun ◽  
Toliat Mitra ◽  
...  
Keyword(s):  
Randomized Trial ◽  
Smooth Surface ◽  
Wilcoxon Test ◽  
Treatment Modalities ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Plate Group ◽  
Lateral Cephalograms ◽  
The Mean ◽  
Maxillary Deficiency

Objectives The purpose of this randomized trial study was to compare the effects of tongue plate and tongue appliance in the treatment of Class III malocclusion with maxillary deficiency in growing patients. Material and Methods 40 patients (19 males, 21 females) with maxillary deficiency were selected. 20 patients (9 boys, 11 girls) with the mean age of 9.3±1.2 were treated with tongue plate. 20 patients (10 boys, 10 girls) with the mean age of 10.1±0.7 were treated by tongue appliance. Lateral cephalograms obtained at the beginning and end of the study were analyzed. Results Paired t-tests and Wilcoxon test showed that SNA and ANB significantly increased in both groups. The Mann-Whitney test showed that there were no statistically significant differences between the two groups except for Jarabak ratio. Jarabak increased by 0.6±3.2° in the tongue appliance group and it decreased 0.4±1.6° in the tongue plate group (p<0.03). Conclusion Both treatment modalities were successful in moving the maxilla forward. The crib of the tongue appliance might bother the tongue and consequently parents are complaining about minor inflammation of the tongue. The smooth surface of the tongue plate might therefore confer some advantages to this system as compared to the tongue plate.

scholarly journals Factors associated with long-term vertical skeletal changes induced by facemask therapy in patients with Class III malocclusion

2017 ◽  
Vol 88 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Hee-Jong Kwak ◽  
Hae-Jin Park ◽  
Yoon-Ji Kim ◽  
Dong-Yul Lee
Keyword(s):  
Multivariate Linear Regression Analysis ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Short Term ◽  
Gonial Angle ◽  
Skeletal Changes ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
The Mean

ABSTRACT Objectives: This study investigated the long-term vertical skeletal changes induced by facemask therapy in patients with Class III malocclusion and different vertical skeletal patterns. Materials and Methods: A total of 54 patients (20 boys and 34 girls; mean age, 7.7 ± 2.0 years) with Class III malocclusion who were successfully treated with facemask therapy were included in this study. Vertical skeletal changes (overbite depth indicator, angle between the Sella-Nasion (SN) plane and Gonion-Gnathion (GoGn) line, angle between the Frankfort horizontal (FH) plane and mandibular plane, gonial angle, and angle between the SN plane and palatal plane) were measured on lateral cephalograms from before treatment (T0) to after facemask therapy (T1) and from T0 to after retention (T2). Multivariate linear regression analysis was used to study the associations of the patients' skeletal patterns with the short-term (T0–T1) and long-term (T0–T2) vertical skeletal changes as a result of facemask therapy. Results: The mean treatment period of facemask therapy (T0–T1) was 1.4 ± 0.6 years, and the mean retention period (T1–T2) was 6.9 ± 2.6 years. Age at T0 was significantly correlated with vertical skeletal changes from T0 to T1. Differences in the treatment results between sexes were not significant. The angle between point A-point B line and mandibular plane to mandibular plane angle at T0 and the angle between the FH plane and mandibular plane at T0 were significant predictors for short-term and long-term changes. Changes in the Sella-Nasion-point A from T0 to T1 and from T1 to T2 significantly affected vertical changes in the short term and long term, respectively. Conclusions: Vertical skeletal changes as a result of facemask therapy are significantly associated with severity of the skeletal Class III malocclusion and mandibular plane angulation before treatment and the amount of forward maxillary growth during the treatment and retention periods.

scholarly journals Compensatory orthodontic treatment of skeletal Class III malocclusion with anterior crossbite

2014 ◽  
Vol 19 (1) ◽  
pp. 113-122 ◽  
Author(s):  
José Valladares Neto
Keyword(s):  
Case Report ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Cranial Base ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Orthodontic Movement ◽  
Main Complaint ◽  
Clinical Stability

INTRODUCTION: This case report describes the orthodontic treatment of an adult patient with skeletal Class III malocclusion and anterior crossbite. A short cranial base led to difficulties in establishing a cephalometric diagnosis. The patient's main complaint comprised esthetics of his smile and difficulties in mastication. METHODS: The patient did not have the maxillary first premolars and refused orthognathic surgery. Therefore, the treatment chosen was orthodontic camouflage and extraction of mandibular first premolars. For maxillary retraction, the vertical dimension was temporarily increased to avoid obstacles to orthodontic movement. RESULTS: At the end of the treatment, ideal overjet and overbite were achieved. CONCLUSION: Examination eight years after orthodontic treatment revealed adequate clinical stability. This case report was submitted to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as part of the requirements to become a BBO diplomate.

scholarly journals Effects of Presurgical Mandibular Incisor Decompensation on Long-Term Outcomes of Class III Surgical Orthodontic Treatment

2021 ◽  
Vol 10 (13) ◽  
pp. 2870
Author(s):  
Jung-Sub An ◽  
Wonchae Jeong ◽  
Liselotte Sonnesen ◽  
Seung-Hak Baek ◽  
Sug-Joon Ahn
Keyword(s):  
Orthodontic Treatment ◽  
Group Differences ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Long Term Outcomes ◽  
Mandibular Incisor ◽  
Skeletal Class ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

This research aimed to evaluate the effects of presurgical mandibular incisor decompensation on long-term outcomes of Class III surgical orthodontic treatment. Thirty-five patients with skeletal Class III malocclusion who received conventional surgical orthodontic treatment were included. Mandibular incisor brackets with −6° of inclination were placed normally in 18 patients (NB group) and inversely in 17 patients (RB group). Between-group differences and relationships between incisal and skeletal variables were analyzed based on lateral cephalograms at pretreatment, presurgery, postsurgery, posttreatment, and retention. Mandibular incisors were more labially inclined in the RB group than in the NB group from presurgery to retention. No significant between-group differences were observed in presurgical and postsurgical skeletal relationships. The NB group exhibited a larger overjet with deficient interincisal contact at postsurgery than the RB group. Skeletal Class III relationship was also more severe in the NB group at retention. More lingually inclined mandibular incisors at presurgery and larger overjet at postsurgery were correlated with a more severe skeletal Class III relationship at retention. Thus, establishing appropriate postsurgical overjet by sufficient presurgical mandibular incisor decompensation may play a significant role in postsurgical stability of Class III surgical orthodontic treatment.

scholarly journals Minimizing the compensatory effects of the Class III malocclusion orthodontic treatment with Biofunctional preadjusted prescription – Case report

2021 ◽  
Vol 10 (9) ◽  
pp. e57110917934
Author(s):  
Wilton Souza Rêgo Netto ◽  
Raquel Amarante ◽  
Roberto Grec ◽  
Ricardo Cesar Gobbi de Oliveira ◽  
Renata Cristina Gobbi de Oliveira ◽  
...  
Keyword(s):  
Case Report ◽  
Side Effects ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Facial Appearance ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Incisors ◽  
Mandibular Incisors

Introduction: Class III malocclusion has skeletal and dental components that can often impair the patient's facial appearance. Its treatment may involve orthognathic surgery or compensatory orthodontics. Case report: This case report presents a Class III malocclusion compensatory orthodontic treatment performed with the Biofunctional prescription brackets. Biofunctional prescription presents a torque value of 0° for the maxillary incisors and +10° for the mandibular incisors, which counteracts to the side effects of the use of Class III intermaxillary elastics, minimizing it, providing a more stable, aesthetic and with a healthier periodontal occlusion. Conclusion: The Class III malocclusion compensatory orthodontic treatment performed with Biofunctional prescription obtains satisfactory results, even depending on the patient collaboration with the use of intermaxillary elastics.

scholarly journals Long-Term Outcomes of Class III Treatment with Mandibular Cervical Headgear Followed by Fixed Appliances

2009 ◽  
Vol 79 (5) ◽  
pp. 828-834 ◽  
Author(s):  
Tiziano Baccetti ◽  
Diego Rey ◽  
Giovanni Oberti ◽  
Franka Stahl ◽  
James A. McNamara
Keyword(s):  
Skeletal Maturity ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Two Phase ◽  
Fixed Appliance ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Fixed Appliances

Abstract Objective: To evaluate the stability of the outcomes of mandibular cervical headgear (MCH) and fixed appliance–treated Class III patients at a long-term posttreatment (5 years) observation, compared with well-matched untreated Class III controls, following a previous report on the short-term outcomes of this protocol. Materials and Methods: The treated group consisted of 20 patients with dentoskeletal Class III malocclusions treated with a two-phase protocol consisting of MCH and fixed appliances, while the control group comprised 18 untreated subjects with similar dentoskeletal Class III malocclusion. Lateral cephalograms of both patients and controls were analyzed at two time points: posttreatment (PT), after two-phase treatment; and long term (LT). All patients were at a postpubertal stage of skeletal maturity at PT, and they showed CS6 at LT, thus revealing completion of pubertal craniofacial growth. Results: In the long term, the treatment group showed significantly smaller values for mandibular length (Co-Gn), SNB angle, maxillomandibular differential, and molar relation. When compared with the controls, the treated patients exhibited also greater values for ANB angle, Wits appraisal, and overjet at LT. No significant difference between the two groups was found for the changes occurring from PT to LT. Conclusions: Favorable dentoskeletal outcomes induced by MCH and fixed appliances remained stable in the long term; untreated Class III malocclusion did not show any tendency toward self-improvement during the postpubertal interval.

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