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.

scholarly journals Assessment of Immediate Skeletal Changes after Alternate Rapid Maxillary Expansion and Constriction – A Case Report

2021 ◽  
Vol 10 (34) ◽  
pp. 2954-2959
Author(s):  
Shilpa Venkatesh Pharande
Keyword(s):  
Case Report ◽  
Rapid Maxillary Expansion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Posterior Crossbite ◽  
Skeletal Changes ◽  
Before And After ◽  
Opening And Closing

The Alt-RAMEC protocol was introduced by Liou in the year 2005. It allows for sutural mobilisation by opening and closing the RME screw for 7-9 weeks. Maxillary protraction after the use of Alt-Ramec (alternate rapid maxillary expansion and contraction) protocol is an efficient method for early treatment of skeletal Class III malocclusion. This case report shows the results of using a hyrax bonded maxillary expander with the Alt-RAMEC protocol to treat a maxillary hypoplasia Class III malocclusion. A 12-year-old patient with skeletal class III malocclusion with anterior as well as the unilateral posterior crossbite was treated using this protocol. CBCT scans were taken before and after expansion. These CBCT scans were used for assessing and analysing the skeletal changes that have occurred after using the AltRamec protocol. The objective of this case report is to assess skeletal changes after using the Alt-RAMEC protocol.

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 Correlation between sagittal jaw position and jaw relationship in children with skeletal class III malocclusion

2018 ◽  
Vol 146 (1-2) ◽  
pp. 12-19
Author(s):  
Zdenka Stojanovic ◽  
Zlata Brkic ◽  
Predrag Vucinic ◽  
Predrag Nikolic ◽  
Marjan Marjanovic
Keyword(s):  
Test Group ◽  
Mixed Dentition ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Everyday Work ◽  
Group 2 ◽  
Jaw Position ◽  
Group 1

Introduction/Objective. The evaluation of sagittal jaw relationship is crucial in orthodontic diagnostics, orthodontic treatment planning, and monitoring of its results. A large number of parameters have been established for their assessment. The aim of this study was to determine the significance of the correlation between the indicators of sagittal jaw relationship, ANB, AOBO, AFBF, NAPg, and OJ, one with another, and with indicators of the sagittal position of the jaws, SNA and SNB, in children with skeletal class III malocclusion. Methods. A total of 100 children with mixed dentition, of both genders, based on the profile cephalometric analysis, were divided into two equal groups: group 1 (test group) ? children with skeletal class III (n = 50), group 2 (control group) ? children with skeletal class I (n = 50). Results. In children with skeletal class III malocclusion, significant correlations were found among the indicators of sagittal jaw relationships ANB, AOBO, AFBF, NAPg, OJ, mutually, except between AOBO and AFBF. Significant correlations of these parameters were also found with the SNB angle, but not with the SNA angle. Conclusion. Confirmed significant correlation between tested indicators in the sagittal jaw relation indicates that, if we find skeletal jaw relationship class III, or just a simple reversed incisors overbite in children in routine application of any of the above mentioned parameters in everyday work, it should be indubitably checked and monitored using a larger number of parameters, especially those that define the sagittal position of the mandible.

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.

scholarly journals Analysis of Tongue Function from the Orthodontist’s Point of View: Not Only a Matter of Deglutition

2021 ◽  
Vol 11 (6) ◽  
pp. 2520
Author(s):  
Andrea Deregibus ◽  
Simone Parrini ◽  
Maria Chiara Domini ◽  
Jacopo Colombini ◽  
Tommaso Castroflorio
Keyword(s):  
Point Of View ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Hypoplasia ◽  
Skeletal Class ◽  
Posterior Crossbite ◽  
Rest Position ◽  
Functional Aspects ◽  
Angle Class Iii Malocclusion

Many studies report that maxillofacial growth is influenced by genetic and environmental elements and that incorrect breathing, chewing, sucking, and swallowing are promoting factors of malocclusion. This study aims to evaluate the function and the influence of the tongue positions in patients with Angle class III malocclusion, maxillary hypoplasia, and posterior crossbite. One hundred patients, aged between 6 and 12 years old, were enrolled for the study. In the first group, patients with a diagnosis of class III malocclusion, affected by maxillary hypoplasia, skeletal class III, and posterior dental crossbite were recruited. In the control group, not treated patients with no malocclusion, skeletal class I, and without posterior dental crossbite were selected. Regarding atypical deglutition, no statistical differences were reported between the two groups, and 14% of patients reported ankyloglossia. Statistical differences were found in tongue rest position and during the execution of “hold and pull” and “chuck” exercises. Results obtained in this observational study showed that the clinician (orthodontist or general dentist) should analyze the presence/absence of atypical swallowing, the anatomical and functional aspects, and the tongue behavior in the rest position.

Effects of Combined Bonded Maxillary Expansion and Face Mask on Dental Arch Length in Patients with Skeletal Class III Malocclusions

2017 ◽  
Vol 41 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Fatma Deniz Uzuner ◽  
Duygu Öztürk ◽  
Selin Kale Varlık
Keyword(s):  
Face Mask ◽  
Mixed Dentition ◽  
Dental Arch ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Palatal Rugae ◽  
Dental Arch Length ◽  
Orthodontic Models

Objective: To evaluate the effects of combined rapid maxillary expansion (RME) and face mask (FM) therapy during the mixed dentition period on the dental arch length in patients with skeletal Class III malocclusion. Study Design: We evaluated pre- and post-treatment orthodontic models of 52 patients (25 girls, 27 boys) aged 8–12 years with skeletal Class III malocclusion(ANB&lt;0) accompanied by maxillary transverse deficiency and retrognatism treated by bonded RME-FM therapy for a mean duration of 8 months. Palatal rugae, the cusp tips of permanent first molars, deciduous molars/permanent premolars, deciduous canines and the incisal edges of permanent central incisors were marked on orthodontic models, which were then photocopied. Inter-molar, inter-premolar and inter-canine widths; the arch length; the arch depth and molar and incisor sagittal movements were measured on these photocopies. Statistical comparisons were made using paired t-tests. Results: Inter-molar, inter-premolar and inter-canine widths and the arch length showed significant increases after treatment, while the arch depth showed a significant decrease (p&lt;0.001 for all). Conclusions: With the study limitations, our results suggest that combined RME-FM therapy increases the arch length in the mixed dentition of patients with skeletal Class III malocclusion.

scholarly journals Stability Factors After Double-Jaw Surgery in Class III Malocclusion

2008 ◽  
Vol 78 (6) ◽  
pp. 1141-1152 ◽  
Author(s):  
Manuela Mucedero ◽  
Antonella Coviello ◽  
Tiziano Baccetti ◽  
Lorenzo Franchi ◽  
Paola Cozza
Keyword(s):  
Clinical Trials ◽  
Treatment Strategies ◽  
Control Group ◽  
Quality Level ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Medical Subject Headings ◽  
Method Error ◽  
Skeletal Class ◽  
Jaw Surgery

Abstract Objective: To identify the stability factors of skeletal Class III malocclusion after double-jaw surgery by a systematic review of the literature. Materials and Methods: The survey covered the period from September 1959 to October 2007 and used the MeSH, Medical Subject Headings. The inclusion criteria were stability of bimaxillary surgery of the permanent dentition, adult patients with skeletal Class III malocclusion, a follow-up of at least 12 months, randomized and nonrandomized controlled clinical trials (RCCTs; CCTs), prospective and retrospective studies with and without concurrent untreated as well as normal controls, and clinical trials (CTs) comparing at least two treatment strategies without any untreated or normal control group. Results: The search strategy resulted in 1783 articles. After selection according to the inclusion/ exclusion criteria, 15 articles qualified for the final review analysis. Quality was low in two studies, medium in twelve, and medium/high in one article, which was represented by a RCT (randomized clinical trial). Most of the studies had sufficient sample size, method error analysis, and adequate statistical methods. Thus, the quality level of the studies was sufficient to draw evidence-based conclusions. Conclusions: Surgical correction of skeletal Class III malocclusion after combined maxillary and mandibular procedures appears to be stable for maxillary advancements up to 5 mm and for the correction of presurgical sagittal intermaxillary discrepancies smaller than 7 mm.

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 Two-phase treatment of patients with crossbite and tendency toward skeletal Class III malocclusion

2014 ◽  
Vol 19 (4) ◽  
pp. 122-135
Author(s):  
Maria de Lourdes Machado Bayerl
Keyword(s):  
Female Patient ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Two Phase ◽  
Skeletal Class ◽  
Skeletal Changes ◽  
Angle Class ◽  
Skeletal Pattern ◽  
Angle Class Iii Malocclusion ◽  
Angle Class Iii

Angle Class III malocclusion is characterized by an inadequate anteroposterior dental relationship which may or may not be accompanied by skeletal changes. In general, patients are distressed by a significantly compromised facial aspect which, when associated with a deficient middle third, encourages patients to seek treatment. This article reports a two-phase treatment carried out in a female patient aged six years and six months with a tendency towards a Class III skeletal pattern. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO). It is representative of the Discrepancy Index (DI) category, and fulfills part of the requirements for obtaining BBO Diploma.

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.

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