scholarly journals Three-dimensional evaluation of changes in upper airway volume in growing skeletal Class II patients following mandibular advancement treatment with functional orthopedic appliances

2018 ◽  
Vol 88 (5) ◽  
pp. 552-559 ◽  
Author(s):  
Stig Isidor ◽  
Gabriele Di Carlo ◽  
Marie A. Cornelis ◽  
Flemming Isidor ◽  
Paolo M. Cattaneo
Keyword(s):  
Upper Airway ◽  
Class Ii ◽  
Class I ◽  
Mandibular Advancement ◽  
Functional Appliance ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Partial Volumes ◽  
Functional Appliances ◽  
Age Range

ABSTRACT Objectives: The aim of this study was to assess three-dimensionally the upper airway changes following functional appliance treatment in growing Class II patients. Materials and Methods: Pre-and post-treatment Cone beam computed tomography scans of 20 patients (age range: 9 to 12; mean: 11.4 ± 1.0 years) were retrieved from the list of patients previously treated with functional appliances in the Postgraduate Clinic at the Section of Orthodontics, Aarhus University, Denmark. Total and partial volumes of the upper airway (ie, lower nasopharynx, velopharynx, and oropharynx) were calculated. To rule out the effect of growth, the changes in the functional appliance group were compared to an age-matched Class I group of 18 patients (age range: 8 to 14; mean: 11.8 ± 1.4 years). Results: In the functional appliance group, all the partial and total volumes were significantly larger at the end of treatment when compared to the start of treatment (P < .003). On the other hand, when comparing the changes for the total and partial volumes of the upper airway in the functional appliance group with the Class I group, a statistical difference was seen only for the oropharynx (P = .022) and total volume (P = .025), with the functional appliance group showing a larger volume increment. Conclusions: An increase in the upper airway volume was found after treatment with functional appliances. This difference was mainly related to the changes at the oropharynx level, which differed significantly from what was observed in the Class I group.

Evaluation of Upper Airway Dimensional Changes and Hyoid Position Following Mandibular Advancement in Patients With Skeletal Class II Malocclusion

2012 ◽  
Vol 23 (6) ◽  
pp. e623-e627 ◽  
Author(s):  
Nanda Kishore Sahoo ◽  
Balakrishnan Jayan ◽  
N. Ramakrishna ◽  
Sukbir Singh Chopra ◽  
Gagandeep Kochar
Keyword(s):  
Upper Airway ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Dimensional Changes ◽  
Skeletal Class Ii

scholarly journals Management of severe Class II malocclusion with sequential modified twin block and fixed orthodontic appliances

2016 ◽  
Vol 6 ◽  
pp. 113-118
Author(s):  
Sonal Chowdhary
Keyword(s):  
Class Ii ◽  
Mandibular Advancement ◽  
Orthodontic Appliances ◽  
Class Ii Malocclusion ◽  
Functional Appliance ◽  
Deep Bite ◽  
Twin Block ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Fixed Orthodontic Appliances

Functional appliance is an effective way of treating skeletal Class II malocclusion in children and adolescents. A 12 months stepwise mandibular advancement protocol with Herbst appliance has been proved to enhance condylar growth and improve mandibular prognathism. The present case report documents a 12-year-old boy presenting with Angle’s Class II, division 1 malocclusion associated with excessive overjet (11 mm), 100% deep bite, and retrognathic mandible. He was treated by a phase I growth modification therapy using twin block appliance with lip pads in a stepwise mandibular advancement protocol followed by a phase II preadjusted Edgewise appliance therapy.

scholarly journals Three-dimensional study of the upper airway in different skeletal Class II malocclusion patterns

2018 ◽  
Vol 89 (1) ◽  
pp. 93-101
Author(s):  
Fernando C. Brito ◽  
Daniel P. Brunetto ◽  
Matilde C. G. Nojima
Keyword(s):  
Linear Regression Analysis ◽  
Three Dimensional ◽  
Upper Airway ◽  
Class Ii ◽  
Class I ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Intergroup Comparison ◽  
Reconstruction Software

ABSTRACT Objectives: To characterize upper airway volume and morphology in patients with different skeletal patterns of Class II malocclusion compared to Class I. Materials and Methods: A total of 197 individuals who had cone-beam computed tomography were allocated into groups according to ANB, SNA, and SNB angles (Class I, Class II maxillary protrusion, Class II mandibular retrusion), each subdivided into hypodivergent, normal, and hyperdivergent. Nasopharynx (NP), oropharynx (OP), and hypopharynx (HP) were assessed with three-dimensional image reconstruction software. Results: Intergroup comparison did not detect significant differences in volume and morphology of NP, OP, and HP. The males displayed larger OP and HP volume than the females. Positive correlations between age and NP, OP, HP volume and between craniocervical angle and OP and HP volume were observed. Linear regression analysis detected a tendency for OP and HP volume to increase as maxillary and mandibular length increased. Conclusions: Upper airway volume and morphology were similar in different skeletal patterns of Class II malocclusion. Actual upper and lower jaw lengths were more closely related to upper airway volume and morphology than the angles that reflected their position relative to the cranial base.

scholarly journals Management of Class II Division 1 Subdivision malocclusion using unilateral bicuspid extractions and fixed functional appliance: A Two Year Follow-Up

2021 ◽  
Vol 8 (1) ◽  
pp. 12-19
Author(s):  
Sarvraj Kohli ◽  
Virinder Kohli ◽  
Gagan Deep Kochhar
Keyword(s):  
Class Ii ◽  
Mandibular Advancement ◽  
Treatment Modalities ◽  
Functional Appliance ◽  
Skeletal Class ◽  
Fixed Functional Appliance ◽  
Skeletal Class Ii ◽  
Division 1 ◽  
Unique Approach ◽  
Class Ii Division 1

Introduction:  Management of Class II Subdivision cases pose a clinical dilemma and require a careful diagnosis to ascertain the source of asymmetry. Various treatment modalities involving: different protocols of tooth extractions; molar distalization; fixed functional appliances or orthognathic surgery have been proposed for the same. Objective:       This article reports a unique approach for management of a severe skeletal Class II with Angle’s Class II Division 1 subdivision malocclusion using unilateral bicuspid extractions in mandibular and maxillary arches  and a fixed functional appliance. Results:         A 13 year 1 month old male in CVMI transition stage was successfully treated. Extraction of #44 was done to alleviate crowding in the mandibular anterior region and #15 was extracted to protract #16 to achieve a Class II molar relationship. A pre-functional Class II molar and canine relationship with co-incident midlines was achieved. The functional phase consisted of a fixed functional appliance (Forsus FRD) for mandibular advancement to correct the severe skeletal Class II. Class I molar and canine relationships were achieved with reduction of facial convexity and overjet. Result remained stable 24 months after treatment. The improvement can be quantified by the reduction in scores of orthodontic indices measured pre and post treatment. Conclusions:                        Management of Class II subdivision malocclusion requires careful planning. This paper presents a unique approach utilizing unilateral extractions and fixed functional appliance to address severe skeletal Class II discrepancy and the subdivision dilemma.

scholarly journals Treatment of Skeletal Class II Malocclusion Using a Fixed Functional Appliance

2013 ◽  
Vol 3 (3) ◽  
pp. 153-158
Author(s):  
Manish Suresh Sonawane ◽  
Girish Ramchandra Karandikar ◽  
Shaili Sanjay Shah ◽  
Vinayak Shridharrao Kulkarni ◽  
Hitesh Jagadish Burad
Keyword(s):  
Female Patient ◽  
Class Ii ◽  
Patient Comfort ◽  
Class Ii Malocclusion ◽  
Initial Alignment ◽  
Functional Appliance ◽  
Skeletal Class ◽  
Fixed Functional Appliance ◽  
Skeletal Class Ii ◽  
Functional Appliances

ABSTRACT Treatment of class II malocclusion has always been an enigma to the orthodontic fraternity. Noncompliant correction of class II malocclusion using fixed functional appliances at the deceleration stage of growth has gained tremendous popularity in the recent times. Aim of the illustrated article is to demonstrate the efficacy of a fixed functional appliance in correction of class II malocclusion. We are reporting a 12-year-old female patient with a skeletal class II malocclusion treated using the Forsus appliance. Forsus FRD was the best option considering age, patient comfort, ease of installation, predictable results and patient compliance. The appliance was worn for 5 months after the initial alignment with fixed mechanotherapy (MBT 0.022"). The mandible was brought forward to a class I skeletal and dental relationship by the end of this phase of treatment. How to cite this article Shah SS, Karandikar GR, Sonawane MS, Kulkarni VS, Burad HJ. Treatment of Skeletal Class II Malocclusion Using a Fixed Functional Appliance. J Contemp Dent 2013;3(3):153-158.

Uso de propulsor mandibular fixo Flex Developer como recurso no tratamento da Classe II em paciente não colaborador

2020 ◽  
Vol 13 (52) ◽  
pp. 40-51
Author(s):  
Renato Barcellos Rédua
Keyword(s):  
Upper Airway ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Advantages And Disadvantages ◽  
Skeletal Class Ii ◽  
High Incidence ◽  
Therapeutic Alternatives ◽  
Smile Aesthetics ◽  
Treatment Alternatives

Class II malocclusion has a high incidence in the population, which may compromise smile aesthetics, occlusion function and stability. Skeletal Class II may affect facial aesthetics and upper airway volume. Class II malocclusion is routinely associated with skeletal Class II condition, having as treatment alternatives the use of Extra Buccal Appliance (EBA) or removable or fixed propulsor appliance. This article describes a case of a patient who did not accept the use of EBA and so it was fitted a Flex Developer propulsor for Class II correction and discussed the advantages and disadvantages of therapeutic alternatives for Class II correction.

scholarly journals Steering the Mandible in the Right Direction : Forsus Case Series

2021 ◽  
pp. 030157422110054
Author(s):  
Prachi Gohil ◽  
Sonali Mahadevi ◽  
Bhavya Trivedi ◽  
Neha Assudani ◽  
Arth Patel ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Case Series ◽  
Treatment Compliance ◽  
Class Ii ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Technological Advances ◽  
Functional Appliances ◽  
The Right ◽  
Mandibular Retrognathia

We are in the process of discovery of new vistas for technological advances in terms of various appliances with a vision of making orthodontic treatment compliance free as well as successful. Due to improved technology, the enigma of treating the Class II syndrome is palliated. “Out of the box” thinking has become a norm to treat certain situations that were not corrected in noncompliant patients. Fixed functional appliances are valuable tools introduced to assist the correction of skeletal Class II malocclusion with mandibular retrognathia at the deceleration stage of growth for achieving stable results. In this direction a case series is reported of patients having the above conditions and undergoing orthodontic treatment using a Forsus FFA. Joining hands with technology is a win-win situation for both the patient and the orthodontist.

scholarly journals Treatment of Class II Div 2 Malocclusion using PowerScope: A Case Report

2018 ◽  
Vol 8 (1) ◽  
pp. 63-67
Author(s):  
Luv Agarwal ◽  
Kamlesh Singh ◽  
Ragni Tandon
Keyword(s):  
Case Report ◽  
Class Ii ◽  
Substantial Improvement ◽  
Adolescent Male ◽  
Forward Movement ◽  
Active Growth ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Aesthetic Appearance ◽  
Functional Appliances

Correction of skeletal Class II malocclusion has become a major challenge for orthodontists. Class II jaw discrepancies characterized by mandibular deficiency are treated with fixed functional appliances when there is no active growth present. This case report illustrates the application of PowerScope in 16 years young adolescent male having skeletal Class II Div 2 with mandibular deficiency who was reported with forwardly and irregularly placed upper front teeth with closed bite. The case was treated initially with MBT 0.022” prescription followed by PowerScope. Successful results were obtained with a substantial improvement in facial profile, skeletal jaw relationship and overall aesthetic appearance. PowerScope produced a significant forward movement of mandible which obliterated the need of extractions

scholarly journals Anatomical characteristics of mandibular bone in skeletal Class I, II and III patients by using cone beam computed tomography images in an iranian population

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Mohammad Zandi ◽  
Abbas Shokri ◽  
Vahid Mollabashi ◽  
Zahed Eghdami ◽  
Payam Amini
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Class Ii ◽  
Class I ◽  
Cone Beam ◽  
Class Iii ◽  
Anatomical Characteristics ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Ramus Height

Objetive: This study aimed to compare the anatomical characteristics of the mandible in patients with skeletal class I, II and class III disorders using cone beam computed tomography (CBCT). Material and Methods: CBCT scans of patients between 17 to 40 years taken with NewTom 3G CBCT system with 12-inch field of view (FOV) were selected from the archive. Lateral cephalograms were obtained from CBCT scans of patients, and type of skeletal malocclusion was determined (Class I, II or III). All CBCT scans were evaluated in the sagittal, coronal and axial planes using the N.N.T viewer software. Results: The ramus height and distance from the mandibular foramen to the sigmoid notch in class II patients were significantly different from those in skeletal class I (P < 0.005). Distance from the mandibular canal to the anterior border of ramus in class III individuals was significantly different from that in skeletal class I individuals (P < .005). Conclusion: Length of the body of mandible in skeletal class I was significantly different from that in skeletal class II and III patients. Also, ramus height in skeletal class I was significantly different from that in skeletal class II patients. CBCT had high efficacy for accurate identification of anatomical landmarks.   Keywords Prognathism; Retrognathism; Mandible; Anatomy; Cone beam computed tomography.

scholarly journals A combined Surgical-Orthodontic treatment in skeletal Class II malocclusion patients

2021 ◽  
Vol 3 (2) ◽  
pp. 82-87
Author(s):  
Prathyaksha Shetty ◽  
Dipjyothi Baruah ◽  
Amit Rekhawat ◽  
Karthik Cariappa ◽  
Sujala Ganapati Durgekar ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Sagittal Split Osteotomy ◽  
Skeletal Class Ii ◽  
Facial Esthetics ◽  
Bilateral Sagittal Split Osteotomy ◽  
Common Problems

Skeletal Class II malocclusion with mandibular deficiency is one of the most common problems that patients seek treatment. Adult patients with severe skeletal Class II malocclusion need orthognathic surgery for successful treatment. Bilateral sagittal split osteotomy (BSSO) is the most often preferred technique for these patients. This case report briefs about two male patient of age 24 years presented with Class II Skeletal relation, mesoprosopic facial form, horizontal growth pattern and Angle’s Class II div 1 malocclusion who were treated with Bilateral sagittal split osteotomy (BSSO) mandibular advancement. The ideal anteroposterior relation was established along with a Class I molar, incisor, canine relationship and ideal overjet, overbite and the overall facial esthetics were significantly improved. Combined surgical-orthodontic treatment aims to obtain a more harmonious facial, skeletal, dental and soft tissue relationship with an added patient self esteem.

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