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 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 Three-dimensional analysis of molar compensation in patients with facial asymmetry and mandibular prognathism

2015 ◽  
Vol 86 (3) ◽  
pp. 421-430 ◽  
Author(s):  
Svetlana Tyan ◽  
Hong-Sik Park ◽  
Munkhshur Janchivdorj ◽  
Sun-Ho Han ◽  
Su-Jung Kim ◽  
...  
Keyword(s):  
Facial Asymmetry ◽  
Root Apex ◽  
Occlusal Plane ◽  
Control Group ◽  
Class Iii ◽  
Mandibular Prognathism ◽  
Skeletal Class ◽  
Mandibular Asymmetry ◽  
Experimental Group ◽  
Maxillary Arch

ABSTRACT Objective:  To evaluate the characteristic transverse dental compensations in patients with facial asymmetry and mandibular prognathism and to compare features of dental compensations between two types of mandibular asymmetry using 3-dimensional (3D) cone-beam computed tomography (CBCT). Materials and Methods:  Seventy-eight adult patients with skeletal Class I (control group; n  =  33; 19 men and 14 women) or skeletal Class III with facial asymmetry (experimental group; n  =  45; 23 men and 22 women) were included. The experimental group was subdivided into two groups according to the type of mandibular asymmetry: translation type (T-type; n  =  20) and roll type (R-type; n  =  19). CBCT images were acquired before orthodontic treatment and 3D analyses were performed. Results:  The transverse dental distance was significantly different between the two groups only at the palatal root apex of the maxillary first molar (P &lt; .05). In the experimental group, the first molar axes were compensated significantly on both arches except the maxillary nondeviated side. The vertical molar heights were different between the two groups only on the maxillary arch (P &lt; .001). The R-type showed greater mandibular ramal length difference and menton deviation than the T-type (P &lt; .001). In the R-type, transverse compensation of the maxillary first molars was more obvious than with the T-type, which resulted in canting in the maxillary occlusal plane. Conclusions:  Mandibular asymmetry with prognathism showed a characteristic transverse dental compensation pattern. The mandibular asymmetry type influenced the amount and direction of molar compensation on the maxillary arch.

scholarly journals Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage

2013 ◽  
Vol 83 (4) ◽  
pp. 630-640 ◽  
Author(s):  
Shushu He ◽  
Jinhui Gao ◽  
Peter Wamalwa ◽  
Yunji Wang ◽  
Shujuan Zou ◽  
...  
Keyword(s):  
Principal Component ◽  
Open Bite ◽  
Control Group ◽  
Vertical Position ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Mini Implants ◽  
Experimental Group ◽  
Lower Incisors

ABSTRACT Objective: To evaluate the effect of the multiloop edgewise arch wire (MEAW) technique with maxillary mini-implants in the camouflage treatment of skeletal Class III malocclusion. Materials and Methods: Twenty patients were treated with the MEAW technique and modified Class III elastics from the maxillary mini-implants. Twenty-four patients were treated with MEAW and long Class III elastics from the upper second molars as control. Lateral cephalometric radiographs were obtained and analyzed before and after treatment, and 1 year after retention. Results: Satisfactory occlusion was established in both groups. Through principal component analysis, it could be concluded the anterior-posterior dental position, skeletal sagittal and vertical position, and upper molar vertical position changed within groups and between groups; vertical lower teeth position and Wits distance changed in the experimental group and between groups. In the experimental group, the lower incisors tipped lingually 2.7 mm and extruded 2.4 mm. The lingual inclination of the lower incisors increased 3.5°. The mandibular first molars tipped distally 9.1° and intruded 0.4 mm. Their cusps moved 3.4 mm distally. In the control group, the upper incisors proclined 3°, and the upper first molar extruded 2 mm. SN-MP increased 1.6° and S-Go/N-ME decreased 1. Conclusions: The MEAW technique combined with modified Class III elastics by maxillary mini-implants can effectively tip the mandibular molars distally without any extrusion and tip the lower incisors lingually with extrusion to camouflage skeletal Class III malocclusions. Clockwise rotation of the mandible and further proclination of upper incisors can be avoided. The MEAW technique and modified Class III elastics provided an appropriate treatment strategy especially for patients with high angle and open bite tendency.

scholarly journals Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

2020 ◽  
Vol 77 (4) ◽  
pp. 395-404
Author(s):  
Vladimir Sinobad ◽  
Ljiljana Strajnic ◽  
Tamara Sinobad
Keyword(s):  
Sagittal Plane ◽  
Control Group ◽  
Class Iii ◽  
Mandibular Prognathism ◽  
Skeletal Class ◽  
Gonial Angle ◽  
Face Height ◽  
Group 2 ◽  
Bimaxillary Surgery ◽  
Experimental Group

Bacground/Aim. Recently, maxillary and bimaxillary surgery gained the primacy in the surgical correction of class III deformities. The aim of this investigation was to compare the changes in the skeletal relationships in patients with mandibular prognathism after bimaxillary surgery. Methods. The study included 70 subjects divided into three groups. Twenty class III patients of the experimental group 1 underwent bilateral sagittal ramus osteotomy and twenty patients of the experimental group 2 were subjected to bimaxillary surgery. The control group consisted of 30 subjects with skeletal class I and physiological occlusion. Cephalometric research was conducted on 110 lateral cephalometric radiographs made in subjects of the experimental groups 1 and 2 before and after surgery and in subjects of the control group. Using the computer program ?Dr. Ceph?, 30 linear and angular skeletal variables were analyzed on each radiograph. Results. Bimaxillary osteotomies changed most of variables that characterize the mandibular prognathism. The changes in the sagittal plane included the significant increase of sella-nasion to the A point (SNA) angle (by 4? on the average) and the A point to B point (ANB) angle (6?), and significant reduction in angles sellanasion to the B point (SNB) (3?), gonial angle (ArGoMe) (8?), gonial angle inferior (NGoMe) (6.2?), and Bj?rks sum (7?). The vertical relationships were normalized by significant reduction in overall anterior face height N-Me (by 5 mm on the average), the lower anterior face height ANS-Me (4 mm), significant increase in the total posterior face height S-Go (2.5?3 mm), lower posterior face height PNS-Go (4 mm), and significant reduction of the basal and mandibular plane angles. Conclusion. Compared to the isolated mandibular operations, bimaxillary surgery changes more efficiently the sagittal and vertical skeletal relations in patients with class III deformities and harmonizes more successfully the entire skeletal facial profile.

Nasalance Scores as a Function of Skeletal Malocclusion of English-Speaking Adults in the North Indian Population

2021 ◽  
pp. 1-10
Author(s):  
Sanjeev Verma ◽  
Nameksh Raj Bhupali ◽  
Satinder Pal Singh ◽  
Dharam Vir ◽  
Chaman Lal
Keyword(s):  
Class Ii ◽  
Normative Values ◽  
Control Group ◽  
Class Iii ◽  
Skeletal Class ◽  
The North ◽  
Skeletal Malocclusion ◽  
Skeletal Class Ii ◽  
Group 3 ◽  
Group 1

<b><i>Objective:</i></b> The objective of this study is quantitative assessment of nasalance for skeletal Class I (normative values), Class II, and III malocclusion in the English language for the North Indian population and to compare the normative values with the nasalance scores obtained from individuals with skeletal Class II and III malocclusion and to evaluate the normative values as a function of gender. <b><i>Material and Methods:</i></b> The study was conducted on a total sample of 200 patients with 100, 50, and 50 in group 1 (control group, Skeletal Class I), group 2 (Skeletal Class II), and group 3 (Skeletal Class III), respectively. ANB angle (anteroposterior angle formed by point A, nasion, and point B) measured on lateral cephalogram was used to categorize the patients into 3 groups. The normative nasalance scores were compared for males and females in the control group. The nasalance scores of skeletal Class II and III subjects were compared to the combined normative scores of the control group. The NasalView was used for the objective assessment of nasalance. Oral syllables (/pa/and/pi/), nasal syllables (/ma/and/mi/), and 3 passages (Zoo passage, Rainbow passage, and Nasal sentences) were used to determine the nasalance scores. <b><i>Results:</i></b> The intragroup comparison of nasalance scores in group 1 showed statistically significant differences for different stimuli. The gender-related comparison showed no statistically significant differences in nasalance scores. The intergroup comparison of nasalance scores for skeletal malocclusion showed no statistically significant differences for different stimuli except statistically significant lower nasalance values for nasal sentences in group 3 compared to the control group. <b><i>Conclusion:</i></b> The study concluded that the nasalance scores for nasal sentences in skeletal Class III malocclusion were significantly lower than in the control group and were not statistically significant between the 3 groups for all other stimuli.

scholarly journals Comparison of three-dimensional soft-tissue evaluations between skeletal and pseudo-class III malocclusions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Burak Kale ◽  
Muhammed Hilmi Buyukcavus
Keyword(s):  
Soft Tissue ◽  
Demographic Data ◽  
Three Dimensional ◽  
Middle Part ◽  
Class I ◽  
Control Group ◽  
Class Iii ◽  
Upper Lip ◽  
Linear Measurements ◽  
Skeletal Class

Abstract The aim of our study was to compare soft tissue measurements with 3D imaging methods in individuals with untreated skeletal and pseudo-Class III malocclusions. The study sample consisted of 75 patients (38 males, 37 females, mean age 12.41 ± 2.35 years) with pseudo- and true skeletal Class III malocclusions and skeletal Class I malocclusions. Soft tissue evaluations of all patients were performed using 3D stereophotogrammetric facial images. In our study, 26 landmarks, 17 linear measurements, 13 angular measurements, and 5 volume measurements were made using the 3dMD Vultus software. The significance was determined to be p < 0.05 in ANOVA, Tukey tests. No significant differences were found among the groups in terms of demographic data (p > 0.05). The skeletal Class I control group had a significantly more extended upper lip and vermillion length as compared to the Class III groups. The soft tissue convexity angle and upper nasal angle were found to be wider in the Class III malocclusion group compared to those in the Class I control group. While the pseudo-Class III group had a significantly lower midface volume, chin volume was significantly higher in the skeletal class group. Upper lip volume was significantly higher in the Class I group. Using 3dMD for guiding clinicians in the differential soft and hard tissue diagnosis of pseudo-Class III malocclusions, differences were revealed in Class I patients in the middle part of the face. In the differential diagnosis of true Class III malocclusions, chin volume was found to be different from that of Class I patients.

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.

Evaluation of Soft Tissue Profile Change Following Bi-maxillary Surgery in Dento-skeletal Class III by Photogrammetric Analysis

2016 ◽  
Vol 15 (2) ◽  
pp. 1-11
Author(s):  
Andrea Torroni ◽  
Giulio Gasparini ◽  
Alessandro Moro ◽  
Gianmarco Saponaro ◽  
Enrico Foresta ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Skeletal Class ◽  
Soft Tissue Profile ◽  
Maxillary Surgery ◽  
Profile Change

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.

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