scholarly journals Stability of bimaxillary surgery on Class III malocclusion treatment

2012 ◽  
Vol 17 (6) ◽  
pp. 41-51 ◽  
Author(s):  
Fernando Antonio Gonçalves ◽  
Vânia Célia Vieira de Siqueira
Keyword(s):  
Muscle Adaptation ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Mandibular Setback ◽  
Skeletal Malocclusion ◽  
Lateral Cephalograms ◽  
Maxillary Surgery ◽  
Bimaxillary Surgery ◽  
Student’S T ◽  
The Stability

OBJECTIVE: To evaluate the stability of bimaxillary surgery in patients with skeletal malocclusion, with the use of rigid internal fixation. METHODS: Lateral cephalograms from 20 patients, 11 males and 9 females, mean age of 26 years and 1 month, were evaluated before surgery, immediately post-operative and at least 6 months after surgery. Nineteen cephalometric measurements were evaluated, and the results were statistically analyzed by means of the Student's t test and the Kruskal-Wallis test. RESULTS: The Le Fort I maxillary advancement surgery showed almost no relapse. There was lack of stability of mandibular setback, with relapse of 37.33% on point B, due to counterclockwise rotation of the mandible between post-operative periods, occurred by better intercuspation after surgery and muscle adaptation. The results showed the same tendencies for both genders. CONCLUSION: It was concluded that on the bimaxillary surgery treatment of Class III malocclusion, the maxillary surgery was very stable, but the mandibular setback recurred. No statistical differences were found in surgical stability between genders.

scholarly journals Case Report: Orthosurgical Management of Skeletal Class III Malocclusion

2020 ◽  
Vol 54 (2) ◽  
pp. 150-156
Author(s):  
Sanjeev Verma
Keyword(s):  
Case Report ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Comprehensive Management ◽  
Mandibular Setback ◽  
Lower Jaw ◽  
History Of ◽  
Bimaxillary Surgery ◽  
Type 3

VG, 25-year-old male, presented with c/c of forwardly placed lower jaw and history of unsatisfactory previous orthodontic treatment. Extraorally, the patient had asymmetrical face and concave profile, competent lips, positive lip step, and chin deviated toward left side by 2 mm. Intraorally, the patient had Angle’s class III type 3 malocclusion with an overjet of (–1) mm, overbite of 0%, and cross-bite wrt 12, 21. The patient was skeletal class III due to macrognathic and prognathic mandible with hypodivergent growth pattern, and proclined upper and retroclined lower incisors. The patient was managed orthosurgically with bimaxillary surgery (maxillary advancement 3 mm + mandibular setback 7 mm) after presurgical decompensation. The case report discusses in detail the diagnosis and comprehensive management of the skeletal class III case.

scholarly journals Osteossíntese no Tratamento Cirúrgico dos Prognatismos: Estado da Arte

2017 ◽  
Vol 30 (3) ◽  
pp. 224
Author(s):  
Nuno Durão ◽  
José Amarante
Keyword(s):  
Relevant Literature ◽  
Inferior Alveolar Nerve ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Sagittal Split Ramus Osteotomy ◽  
Acceptable Alternative ◽  
Mandibular Setback ◽  
Common Technique ◽  
The Stability

Introduction: Prognathism is a common skeletal facial abnormality, associated with class III malocclusion, often with repercussions in quality of life. In addition to orthodontic treatment, sagittal split ramus osteotomy is the most common technique for its correction, and segment osteosynthesis is an important element of the post-surgical outcome.Materials and Methods: A search for relevant literature was conducted in the PubMed/MEDLINE database and in other relevant sources.Results: The stability of different fixation methods, their repercussions on inferior alveolar nerve lesions, and the type of material are among the most researched subjects.Discussion: Recent research about the type of osteosynthesis applied in the sagittal split ramus osteotomy for mandibular setback is discussed.Conclusion: Miniplates appear to be the better option for fixation of sagittal split osteotomy for mandibular setback. Bioabsorbable osteosynthesis may be an acceptable alternative to titanium.

Quantitative Analysis of Body Posture and Its Correlation With Cervical Posture in Various Malocclusions

2021 ◽  
Author(s):  
Shruthi Pradeep ◽  
Priyanka Venkatasubramanian ◽  
Ratna Parameswaran ◽  
Devaki Vijayalakshmi
Keyword(s):  
Class Ii ◽  
Body Posture ◽  
Force Platform ◽  
Class I ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Skeletal Malocclusion ◽  
Lateral Cephalograms ◽  
Cervical Posture

Abstract BACKGROUND: Considering that malocclusions can cause cervico-mandibular and cervico-cranial disorders, the aim of this study is to investigate whether there are significant differences in posture in subjects with skeletal class I, class II and skeletal class III malocclusion METHODS: A clinical study conducted on 90 subjects with Angle`s class I, II, III skeletal malocclusion. Standardized Casts of the subjects were used to analyze the tooth characteristics. Lateral cephalograms were used to assess cervical posture through cervical skull Rocabado analysis. A customized force platform with pressure sensors were used for posture analysis. RESULTS: There is a difference in body posture in subjects with skeletal class I, class II and class III malocclusion and a positive correlation between body posture and cervical posture is found in subjects with these classes of skeletal malocclusion. Subjects with class I malocclusion were found to have a normal cervical and body posture. Strain values from the force platform showed equal distribution of strain on both the feet. Subjects with class II malocclusion were found to have a forward cervical posture with the forward lean of body posture. Subjects with class III skeletal malocclusion were found to have a backward cervical posture with the posterior lean of body posture. CONCLUSION: The results suggest that different classes of malocclusion present with an alteration in cervical and body posture. Correction of the malocclusion or an intervention plan for the prevailing malocclusion should be done as early as possible which can be used to correct the posture thereby restoring the equilibrium of the body.

scholarly journals Correction of severe facial asymmetry: A case with fractured condyle

2019 ◽  
Vol 9 ◽  
pp. 59-64
Author(s):  
Ramesh Agrawal ◽  
Dolly P. Patel ◽  
Bhagyashree B. Desai
Keyword(s):  
Facial Asymmetry ◽  
Post Treatment ◽  
Radiographic Examination ◽  
Rigid Fixation ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
History Of ◽  
Condylar Head ◽  
The Stability ◽  
The Right

The current paper depicts the challenges faced during the treatment of a complicated case of mandibular condylar head fracture, facial asymmetry, and centric relation-centric occlusion (CR-CO) discrepancy along with Class III malocclusion. A 20-year-old female reported with the chief complaint of difficulty in chewing and concern with her appearance due to deviated jaw and had a history of trauma over chin region. The clinical and radiographic examination revealed significant facial asymmetry with long face, right-sided deviation of the mandible, fractured condyle, CR-CO discrepancy, cross- bite with Class III malocclusion, and a missing mandibular single incisor along with non-vital 21 and 22. She was treated with 0.022 MBT appliance along with guiding plane for CR-CO correction followed by asymmetric bilateral sagittal split osteotomy and differential set back on the right and left sides and finally rigid fixation. A good facial profile and functional occlusion were achieved and non-vital 21 and 22 were esthetically rehabilitated with PFM crowns. The stability of surgical as well as orthodontic corrections was excellent and appreciable in the records obtained 2-year post-treatment. When faced with mutilated malocclusion, with multiple problems, sequential correction of functional malocclusion with dental decompensation followed by skeletal correction with surgical approach has yielded a appreciable facial correction with good stability showing 2-year post-treatment follow-up.

scholarly journals Management Of Mandibular Lateral Incisor Agenesis With Skeletal Class III Malocclusion by Space Closing Technique

2018 ◽  
Vol 1 (2) ◽  
pp. 93
Author(s):  
Fidiyah Inayati ◽  
I Gusti Aju Wahju Ardani
Keyword(s):  
Lateral Incisor ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Crowding ◽  
Skeletal Class ◽  
Dental Esthetics ◽  
Skeletal Malocclusion ◽  
Anterior Teeth ◽  
Space Closure ◽  
Closure Method

Background: Patients with congenital absence of a mandibular lateral incisor are often found having difficulty in achieving adequate functional occlusion. It may affect esthetics, mastication, speech, and occlusal balance. Purpose: This paper reported an agenesis treatment of one mandibular lateral incisor case using a space closure method. Case: A twenty-three years old female patient with agenesis of tooth 42, mandibular anterior crowding, multiple diastema on mandibular anterior teeth, and skeletal class III malocclusion. Case Management: Space closure method was chosen to correct the agenesis by considering the class III skeletal malocclusion and multiple diastema condition. Conclusion: Space closure method treatment improved the patient’s facial and dental esthetics, and it provided a good functional occlusion, despite the absence of a mandibular lateral incisor, which generally impairs the adequate incisal guidance.

Comparison of skeletal anchorage and tooth-borne maxillary protraction followed by fixed appliance in Class III malocclusion

2019 ◽  
Vol 42 (2) ◽  
pp. 193-199 ◽  
Author(s):  
Sang-Hoon Lee ◽  
Sang-Duck Koh ◽  
Dong-Hwa Chung ◽  
Jin-Woo Lee ◽  
Sang-Min Lee
Keyword(s):  
Phase Ii ◽  
Class I ◽  
Skeletal Anchorage ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Fixed Appliance ◽  
Skeletal Class ◽  
Maxillary Protraction ◽  
Lateral Cephalograms ◽  
Residual Growth

Summary Objectives The purpose of this study was to compare the results of skeletal anchorage (SAMP) and tooth- borne (TBMP) maxillary protraction followed by fixed appliance in growing skeletal Class III patients. Materials and methods Patients treated with maxillary protraction were selected and classified into two groups (SAMP: n = 19, mean age = 11.19 years; TBMP: n = 27, mean age = 11.21 years). Lateral cephalograms taken before treatment (T0), after the maxillary protraction (T1), and after the fixed appliance treatment (T2) were analysed and all variables were statistically tested to find difference between the two groups. Results Compared to the TBMP, the SAMP showed significant forward growth of maxilla (Co-A point and SN-Orbitale) and improvement in intermaxillary relationship (ANB, AB to mandible plane, and APDI) after the overall treatment (T0–T2), with no significant sagittal changes in maxilla or mandible throughout the fixed appliance treatment (T1–T2). Limitations In maxillary protraction, effects of skeletal anchorage were retrospectively compared with those of dental anchorage, not with Class I or III control. Conclusions and implications After maxillary protraction, skeletal and tooth-borne anchorage did not cause significant differences in the residual growth of maxilla throughout the phase II treatment. Orthopaedic effects with skeletal anchorage showed appropriate stability in maxilla and intermaxillary relationship even after fixed appliance treatment.

scholarly journals Prognosis Prediction for Class III Malocclusion Treatment by Feature Wrapping Method

2009 ◽  
Vol 79 (4) ◽  
pp. 683-691 ◽  
Author(s):  
Bo-Mi Kim ◽  
Bo-Yeong Kang ◽  
Hong-Gee Kim ◽  
Seung-Hak Baek
Keyword(s):  
Statistical Methods ◽  
Classification Accuracy ◽  
Prediction Accuracy ◽  
Support Vector ◽  
Second Phase ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Prognosis Prediction ◽  
Lateral Cephalograms ◽  
Sequential Forward Search

Abstract Objective: To use the feature wrapping (FW) method to identify which cephalometric markers show the highest classification accuracy in prognosis prediction for Class III malocclusion and to compare the prediction accuracy between the FW method and conventional statistical methods such as discriminant analysis (DA). Materials and Methods: The sample set consisted of 38 patients (15 boys and 23 girls, mean age 8.53 ± 1.36 years) who were diagnosed with Class III malocclusion and received both first-phase (orthopedic) and second-phase (fixed orthodontic) treatments. Lateral cephalograms were taken before (T0) and after first-phase treatment (T1) and after second-phase treatment and retention (T2). Based on the measurements taken at the T2 stage, the patients were allocated into good (n = 20) or poor (n = 18) prognosis groups. Forty-six cephalometric variables on T0 lateral cephalograms were analyzed by the FW method to identify key determinants for discriminating between the two groups. Sequential forward search (SFS) algorism and support vector machine (SVM) were used in conjunction with the FW method to improve classification accuracy. To compare the prediction accuracy of the FW method with conventional statistical methods, DA was performed for the same data set. Results: AB to mandibular plane angle (°) and A to N-perpendicular (mm) were selected as the most accurate cephalometric predictors by both the FW and DA methods. However, classification accuracy was higher with the FW method (97.2%) compared with DA (92.1%), because the FW method with SFS and SVM has a more precise classification algorithm. Conclusions: The FW method, which uses a learning algorithm, might be an effective alternative to DA for prognosis prediction.

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.

Sign in / Sign up

Export Citation Format

Share Document