Changes in Soft Tissue Profile during the Treatment of Class III Malocclusion

1987 ◽  
Vol 14 (4) ◽  
pp. 243-249 ◽  
Author(s):  
W. J. S. Kerr ◽  
T. R. Ten Have
Keyword(s):  
Soft Tissue ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Profound Change ◽  
Soft Tissue Profile ◽  
Before And After ◽  
The Mean ◽  
Function Regulator ◽  
Removable Appliances

The changes in soft tissue profile for 66 Angle's Class III malocclusion subjects treated either with the Function Regulator, or Upper Removable Appliances, or the Edgewise Appliance were assessed by comparing cephalometric radiographs taken before and after correction of the anterior occlusion. While the mean soft tissue profile in all groups improved in relation to a Control Group, the F R. III Group demonstrated the most profound change.

Skeletal, Dental and Soft Tissue Changes in Postural Class III Malocclusion Treated with a Maxillary Removable Appliance

2007 ◽  
Vol 31 (2) ◽  
pp. 149-152
Author(s):  
Elham Abu Alhaija
Keyword(s):  
Soft Tissue ◽  
Treated Patient ◽  
Treated Group ◽  
T Test ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Soft Tissue Profile ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Removable Appliance

Objective: This longitudinal retrospective cephalometric study was undertaken in an attempt to evaluate the effect of upper removable appliances on the hard and soft tissue structures in subjects with postural Class III. Methods: The material consisted of cephalometric films of 17 Class III patients (8 females and 9 males, with a mean age of 10.10 ± 1.63). Each treated patient was matched before treatment with Class III subject for sex and age. Differences in treated group at T1 and T2 and between treated and untreated groups were examined using paired t-test and independent t-test respectively. Results: Treated and untreated Class III subjects differed in mandibular prognathism (SNB, P<0.01). Upper incisors proclined and inter-incisal angle reduced during treatment (P<0.001). Soft tissue A point moved anteriorly as maxillary incisors were proclined (P<0.05). Soft tissue profile was improved (NNP, P<0.05; NAP, P<0.01). Conclusion: Skeletal, dental and soft tissue changes were found in patients treated by upper removable appliance in postural Class III patients. Clinical relevance: upper removable appliance is an efficient method to procline upper incisors in postural Class III malocclusion and may be of greater influence in improving soft tissue profile.

scholarly journals Changes in soft tissue profile during the treatment of Class III malocclusion treated with Class III activator

2013 ◽  
Vol 2 (2) ◽  
pp. 24-29
Author(s):  
MSA Mamun ◽  
MLA Hyder ◽  
MZ Hossain
Keyword(s):  
Soft Tissue ◽  
Treated Patient ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Facial Profile ◽  
Skeletal Class ◽  
Soft Tissue Profile ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Cephalometric Study

Objective: This longitudinal retrospective cephalometric study was undertaken in an attempt to evaluate the effect of Class III activator on the soft tissue structures in subjects with skeletal Class III. Methods: The material consisted of cephalometric films of 26 Class III patients (13females and 13 males, with a mean age of 13.58±4.38 years). Each treated patient was matched before treatment with Class III subject for sex and age. Differences at T1 and T2 were examined using paired t-test. Results: After treatment the patients' soft tissue profile improved significantly compare with before treatment. Conclusion: Soft tissue changes were found in patients treated by Class III activator in skeletal Class III patients. Clinical relevance: Class III activator may be an efficient method to improving soft tissue facial profile in Skeletal Class III malocclusion. DOI: http://dx.doi.org/10.3329/bjodfo.v2i2.16160 Ban J Orthod & Dentofac Orthop, April 2012; Vol-2, No.2, 24-29

scholarly journals Characteristics of soft tissue profile in patients with skeletal class III

2006 ◽  
Vol 53 (3) ◽  
pp. 166-173 ◽  
Author(s):  
Zorana Stamenkovic ◽  
Nenad Nedeljkovic
Keyword(s):  
Soft Tissue ◽  
Clinical Examination ◽  
Vertical Direction ◽  
Control Group ◽  
Class Iii ◽  
Skeletal Class ◽  
Skeletal Malocclusion ◽  
Soft Tissue Profile ◽  
School Of Dentistry ◽  
Experimental Group

Introduction: Patients with skeletal class III have typical characteristics of soft tissue profile. Aim: The aim of this study was to determine characteristics of soft tissue profile in patients with skeletal class III and to find possible significant differences between these patients and patients in the control group (without malocclusion in sagittal direction). Methods: Twenty patients of the Department of Orthodontics, Belgrade School of Dentistry, were included in this study. Average age in this group was 8 years and 5 months. In experimental group there were 13 girls and 7 boys. Changes in soft tissue profile by clinical examination, photographic and cephalometric analysis were determinated during the whole diagnostic procedure. In the clinical examination, type of profile, characteristics of lips, facial harmony in vertical direction and the angle of mandibular plane were analyzed. On lateral cephalometrics, the following parameters were measured and analyzed: sagittal parameters SNA, SNB and ANB and parameters in Schwarz, Ricketts and Holdaway analysis of soft tissue profile. Results: Patients in the experimental group had significantly different changes in soft tissue profile. It was the consequence of existing skeletal malocclusion in sagittal direction. Statistically, differences were significant (p<0.01) Conclusion: Measurements and analysis showed that patients had typical severe concave profile. Most often, the position of soft tissue structures did not compensate skeletal anomalies.

scholarly journals INFLUENCE OF GROWTH IN TREATED CLASS III GROWING PATIENTS WITH FACE MASK THERAPY AND UNTREATED PATIENTS

2019 ◽  
Vol 31 (4) ◽  
pp. 883-888
Author(s):  
Sofija Carceva Shalja ◽  
Sandra Atanasova
Keyword(s):  
Negative Impact ◽  
Face Mask ◽  
Treated Group ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Protraction ◽  
Before And After ◽  
Maxillary Deficiency ◽  
Observation Period

Developing Class III Malocclusion in most of the cases affects dentofacial appearance. The goal of this study is to investigate the changes in the facial appearances in treated patients withFace mask orthopedic treatment and untreated Class III patients. The sample consisted 49 patients (boys and girls),with average age of 9 years, who had a Class III Malocclusion with an anterior crossbite and a component of maxillary deficiency. 28 of them were treated with protraction Face mask- Delair mask (petit tipe), and the other 21 were presenting the control group consisted of untreated Class III Patients.In treated group pretreatment and posttreatment cephalometric radiographs from 28 patients(15 males and 13 females) were analyzed and compared with the results of cephalometric analyzes in untreated group(observation period of 1 year). Results from these study showed forward displacement of maxilla(SNA p<0.05),increasing of maxillary length(Co-A p<0.05)correction of maxillary-mandibular relationship(ANB p<0.05) in treated group while in untreated groupvalues for the parameters in the upper jaw and inter jaw relationship before and after the observation period of 1 yearshowed no statistically significant changes pointing to the negative impact of incorrect skeletal terms in Class III growing patients.Based on our findings we can concluded that in Class III patients there is a big motivation for orthodontic treatment because their dentofacial appearance deviates from sociocultural norms.Therefore, an important objective of accepting maxillary protraction treatment in Class III malocclusion is providing nonsurgical alternative in the treatment and improving the physico-social wellbeing and appearance of the patients, especially during their teenage years.

scholarly journals Orthopedic Effect of Chin Cup during Mixed Dentition Stage

2017 ◽  
Vol 18 (5) ◽  
pp. 410-414
Author(s):  
Mohamed I Hashem ◽  
Zeeshan H Ahmad ◽  
Sukumaran Anil ◽  
Khalid J Alanazi
Keyword(s):  
Treated Group ◽  
Mixed Dentition ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Skeletal Changes ◽  
Before And After

ABSTRACT Introduction Chin cup (CC) therapy has been used as the traditional appliance for treating class III malocclusion during mixed dentition period. The aim of this study was to investigate the effect of CC on the improvement of skeletal and dentoalveolar skeletal changes in class III patients during mixed dentition stage. Materials and methods A total of 30 patients (7–9 years old) with skeletal class III malocclusion were selected based on clinical and cephalometric examination. Out of 30 patients, 20 underwent CC therapy. All orthodontic records and measurements were taken before and after treatment. Similar records were collected from the control group. The lateral cephalometric films were traced before and after treatment and analyzed. Results There was a significant improvement in maxillary and the mandibular skeletal measurements after CC therapy. Improvement of ANB angle and an increase in Wits appraisal have been detected in the treated group according to intermaxillary skeletal variables. Conclusion The study concluded that the CC therapy is effective for correcting skeletal class III malocclusion along with positive changes in the dentoskeletal variables during the mixed dentition stage. How to cite this article Al-Khalifa HN, Hashem MI, Alanazi KJ, Anil S. Orthopedic Effect of Chin Cup during Mixed Dentition Stage. J Contemp Dent Pract 2017;18(5):410-414.

Induced Premaxillary Suture Fusion: Class III Malocclusion Model

2008 ◽  
Vol 87 (9) ◽  
pp. 856-860 ◽  
Author(s):  
W.H. Ruan ◽  
J.N. Winger ◽  
J.C. Yu ◽  
J.L. Borke
Keyword(s):  
Cranial Base ◽  
Craniofacial Morphology ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Obvious Change ◽  
Before And After ◽  
Suture Fusion ◽  
The Relationship ◽  
Experimental Group

The etiology of class III malocclusion remains unknown. The present study investigates the relationship between craniofacial morphology and premaxillary suture fusion to test the hypothesis that class III malocclusion may be related to premaxillary suture fusion. Cyanoacrylate was applied to immobilize the left premaxillary suture in the experimental group. Sham surgeries in rats were used for controls. Dental impressions and radiographs were taken before and after surgery for comparison of craniofacial differences between groups. Overall cranial base lengths, craniofacial widths, and craniofacial angulations related to the anterior base showed significant differences between groups. At the end of the experiment, the growth of the snout in the experimental group was inhibited and deviated to the treated side, while no obvious change was seen in the control group. The results show that induced premaxillary suture fusion can affect craniofacial morphology and indicate that premature premaxillary suture fusion may result in class III malocclusion.

scholarly journals Soft Tissue Characteristics and Gender Dimorphism in Class III Malocclusion: a Cephalometric Study in Adult Greeks

2017 ◽  
Vol 21 (3) ◽  
pp. 162-166
Author(s):  
Smaragda Kavvadia ◽  
Sossani Sidiropoulou-Chatzigianni ◽  
Georgia Pappa ◽  
Eleni Markovitsi ◽  
Eleftherios G. Kaklamanos
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Upper Lip ◽  
Gender Dimorphism ◽  
Skeletal Class ◽  
Soft Tissue Profile ◽  
Lateral Cephalograms ◽  
Males And Females ◽  
Tissue Characteristics

SummaryBackground/Aim: Class III malocclusion case are considered complex problems associated with unacceptable esthetics. The purpose of the present study was to assess the characteristics of the soft tissue profile and investigate the possible gender differences in adult Greeks with Class III malocclusion. Material and Methods: The material of the study comprised of 57 pretreatment lateral cephalograms of adult patients with Class III malocclusion aged 18 to 39 years. Eleven variables were assessed. The variables were measured and the mean, minimum and maximum and standard deviations were calculated. Parametric and non-parametric tests were used to compare males and females patients. Results: The total sample was characterized by concave skeletal profile. Male patients exhibited greater nose prominence and superior sulcus depth, longer distance from subnasale to the harmony line, more concave profile, thicker upper lip and larger upper lip strain. Conclusions: Many significant differences were noted in soft tissue characteristics between males and females with skeletal Class III malocclusion, suggesting possible gender dimorphism.

Mandibular Position in Class III Malocclusion

1988 ◽  
Vol 15 (4) ◽  
pp. 241-245 ◽  
Author(s):  
W. J. S. Kerr ◽  
T. R. TenHave
Keyword(s):  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Displacement ◽  
General Significance ◽  
Mandibular Position ◽  
Before And After ◽  
Skull Radiographs

Lateral skull radiographs of 66 subjects with Class III malocclusion, characterized by lingual occlusion of the upper incisors and a degree of overbite, taken before and after treatment were compared with a Control Group of similar mean age and interval between films. Vertical, Horizontal and Oblique measurements were made to establish the part played by overclosure and anterior displacement of the mandible in the aetiology of Class III malocclusion. The results suggest that both may play a part but that the former is of more general significance than the latter.

scholarly journals Analysis of MYO1H Gene Polymorphism in Skeletal Class-III Malocclusion Due to Mandibular Prognathism

2021 ◽  
Author(s):  
Anjana Atteeri ◽  
Praveen Kumar Neela ◽  
Pavan Kumar Mamillapalli ◽  
Vasu M. Sesham ◽  
Sreekanth Keesara ◽  
...  
Keyword(s):  
Local Population ◽  
Research Work ◽  
Control Group ◽  
Study Group ◽  
Genome Wide Association Studies ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Mandibular Prognathism ◽  
Skeletal Class ◽  
Increased Risk

Abstract Background Mandibular prognathism (MP) is a craniofacial deformity resulting from the combined effects of environmental and genetic factors. Although various linkage and genome-wide association studies for mandibular prognathism have identified multiple strongly associated regions and genes, the causal genes and variants responsible for the deformity remained ambiguous. Aim This research work was aimed to study the association between polymorphism rs10850110 of the MYO1H gene and skeletal class-III malocclusion in our local population. Materials and Methods Thirty patients with skeletal class III due to mandibular prognathism in the study group and 30 patients with skeletal class I in the control group were selected for this study. These patients were from both sexes and above age 10 years. Based on the cephalometric values, patients were categorized into study and control groups. SNB (angle between sella, nasion and point B at nasion) greater than 82 degrees with an ANB (angle between point A, nasion and point B at nasion) of less than 0 degrees in the study group and ANB (angle between point A, nasion and point B at nasion) of 2 to 4 degrees in the control group were categorized. The polymorphism (rs10850110) of the MYO1H gene was genotyped using polymerase chain reaction and restriction fragment length polymorphism. Associations were tested with SNP exact test using SNPstats software. Results The single-nucleotide polymorphism rs10850110 showed a statistically significant association with mandibular prognathism. The G allele of marker rs10850110 (5′ of myosin1H - MYO1H) was overrepresented when compared with the “A” allele in mandibular prognathism cases (p < 0.0001), and this was very significant. Conclusion These results suggest that the rs10850110 polymorphism of the MYO1H gene is associated with an increased risk for mandibular prognathism.

Sign in / Sign up

Export Citation Format

Share Document