scholarly journals Prevalence Of Removable Functional Appliance Usage In The Management Of Class II Malocclusion

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 100-106
Author(s):  
Jagadheeswari Ramamoorthy ◽  
Remmiya Mary Varghese ◽  
Geo Mani
Keyword(s):  
Class Ii ◽  
Open Bite ◽  
Growth Potential ◽  
Class Ii Malocclusion ◽  
Age Group ◽  
Functional Appliance ◽  
Mandibular Growth ◽  
Twin Block ◽  
Functional Appliances ◽  
Set Up

A Removable functional appliance is composed of polished acrylic shields and stainless steel wires prescribed for patients with more pronounced class II malocclusion or open bite. These appliances work comfortably with a patient’s inherent growth to produce the desired Skeletal or Dental development. It can be achieved by dentoalveolar effects, alteration of soft tissue and utilisation of greater Mandibular growth potential. The commonly used Removable functional appliances are Twin Block appliance, Activator, Bionator, Frankel appliance, etc. This study aims to assess the frequency of the usage of removable functional appliances in a hospital based set up. The data of patients undergoing Removable functional appliance therapy was retrieved from the case sheets of the patients.The collected data was tabulated in Excel and statistically analysed with the help of SPSS software. From the results obtained, Twin block appliance was the most prevalent Removable functional appliance with a frequency of 60.6%. Frankel appliance and Activator each had a frequency of 9.1%. Twin block appliances were mostly preferred for males than females whereas Activator is preferred mostly for females. Based on the age, Twin block appliance was preferred for the age group 10-15 years, Frankel appliance for 5-10 years, Activator and Other appliances for 10-15 years. Therefore, within the limits of this study, we observed that Twin block appliance was the most preferred Removable functional appliance used in the management of Class II malocclusion and the most common age group receiving appliance therapy is 10-15 years.

scholarly journals Evaluation of changes seen in TMJ after mandibular advancement in treatment of Class II malocclusions, with functional appliances, a CBCT study

Biomedicine ◽  
2021 ◽  
Vol 41 (2) ◽  
pp. 236-242
Author(s):  
Ram Mohan Parvathy ◽  
Sandeep Shetty ◽  
Parveen Katheesa
Keyword(s):  
Three Dimensional ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Class Ii Malocclusion ◽  
Functional Appliance ◽  
Functional Therapy ◽  
Twin Block ◽  
Functional Appliances ◽  
Level Of Significance ◽  
Forsus Fatigue Resistant Device

Introduction and Aim: Various functional appliances are developed to remodel the glenoid fossa and, thereby change the position of the mandible and correct Class II malocclusion. Many diagnostic aids have already been used to evaluate the changes ,but Cone Beam computed tomography (CBCT), three -dimensional diagnostic tool is rarely used .So this study was conducted with an aim is to evaluate the changes seen in the temporomandibular joint (TMJ) after mandibular advancement in class II malocclusions with functional appliance therapy, using CBCT, and also to assess and compare the efficacy of Twin Block, Power Scope and Forsus Fatigue Device used for the correction of class II malocclusion.Materials and Methods: The retrospective study was performed using the 52 CBCT scans of 26 patients with class II malocclusion due to retrognathic mandible. The subjects were divided into three groups based on appliance (Twin Block, Power Scope and Forsus Fatigue Resistant Device) used for the treatment. The changes seen in TMJ after mandibular advancement and condylar response to functional therapy was evaluated using the six. Data obtained were subjected to one-way Anova analysis with Posthoc Tukey test. Software SPSS version 20 was used to analyse the data. The level of significance was set at p < 0.05.Results: In subjects treated with Twin Block, the condyle was displaced slightly downwards and anteriorly; and condylar height was reduced. The decrease in the anterior and superior joint spaces were also found. In subjects treated with PowerScope and Forsus Fatigue Resistant Device, there was an increase in condylar height and width with a decrease in anterior and superior joint space.Conclusion: All three appliances were found to bring about changes in TMJ structures, but amongst them the Twin block has proved to be more efficient.

scholarly journals Study of Functional Appliance for Treatments of Children and Adolescents with Class II Malocclusion

2020 ◽  
Vol 47 (3) ◽  
pp. 235-247
Author(s):  
Himchan Kang ◽  
Koeun Lee ◽  
Misun Kim ◽  
Okhyung Nam ◽  
Hyo-seol Lee ◽  
...  
Keyword(s):  
Class Ii ◽  
Optimal Timing ◽  
Class Ii Malocclusion ◽  
Functional Appliance ◽  
Twin Block ◽  
Pubertal Growth ◽  
Functional Appliances ◽  
Maxilla And Mandible ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to evaluate the skeletal and dentoalveolar effects and optimal timing for treatment of class II malocclusion with functional appliances in children and adolescents.A group of 30 patients with class II malocclusion were divided into 3 groups according to their use of functional appliance: Twin block, Activator, Fränkel appliance. The group was also divided into 2 groups according to the cervical vertebrae maturation method. Lateral cephalometric radiographs were analyzed pretreatment (T0) and posttreatment (T1). Among the functional appliances, treatment with Twin block and Activator showed significant increase in the length of the mandible (Co-Gn) and the lower anterior facial height (ANS to Me), whereas the overjet and overbite were significantly reduced. Treatment with Fränkel appliance showed significant improvement in the relationship of maxilla and mandible. In addition, if the functional appliance was used during the period of pubertal growth peak, there was a significant increase in mandibular length, improvement in the relationship of maxilla and mandible, labial inclination of lower incisors and decrease in overjet compared to the treatment before pubertal growth peak. Therefore, this study indicates that using functional appliances for patients with class II malocclusion is effective and the optimal timing for using functional appliances is during pubertal growth peak.

scholarly journals Short-term Anteroposterior Treatment Effects of Functional Appliances and Extraoral Traction on Class II Malocclusion

2007 ◽  
Vol 77 (5) ◽  
pp. 907-914 ◽  
Author(s):  
Gregory Stylianos Antonarakis ◽  
Stavros Kiliaridis
Keyword(s):  
Literature Search ◽  
Meta Analysis ◽  
Class Ii ◽  
Published Data ◽  
Class Ii Malocclusion ◽  
Random Effects Model ◽  
Block Group ◽  
Short Term ◽  
Twin Block ◽  
Functional Appliances

Abstract Objective: To evaluate the anteroposterior short-term skeletal and dental effects on Class II malocclusion in growing patients following treatment with functional appliances (activators or twin block), extraoral traction, or combination appliances (appliances with both functional and extraoral traction components), based on published data. Materials and Methods: A literature search was carried out identifying a total of nine prospective clinical trials. The data provided in the publications underwent meta-analysis using the random effects model with regard to SNA, SNB, ANB, and overjet. Results: All appliance groups showed an improvement in sagittal intermaxillary relationships (decrease in ANB) when compared to untreated subjects. Activators and twin block appliances accomplish this mainly by acting on the mandible (increases in SNB) while twin block appliances also seem to act on the maxilla (decrease in SNA). Extraoral traction appliances achieve this by acting on the maxilla (decreases in SNA). Combination appliances mainly act on the mandible (increase in SNB). Activators, twin block, and combination appliances also reveal a decrease in overjet, which is not the case in the singular use of extraoral traction. Conclusions: Intermaxillary changes being present in all appliance groups, anteroposterior treatment response following the use of functional appliances and/or extraoral traction in growing class II malocclusion patients is most evident in one of the two jaws (mandible for activators and combination appliances and maxilla for extraoral traction) except for the twin block group, which shows changes on both jaws.

scholarly journals Skeletal Class II Malocclusion Treatment with Combined Twin Block and Lip Bumper Appliances: A Case Report

2021 ◽  
Vol 16 (Supp. 1) ◽  
pp. 87-94
Author(s):  
Hilda Fitria Lubis ◽  
Nurhayati Harahap ◽  
Ananda Permata Sari
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Condylar Cartilage ◽  
Lower Lip ◽  
Mandibular Growth ◽  
Twin Block ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Lip Bumper

Functional appliances have been used over a century in clinical orthodontic treatments for skeletal Class II malocclusion patients. Its popularity is attributed to its high patient adaptability and ability to produce rapid treatment changes. The twin block and lip bumper can be combined depending on the patient’s cases. The purpose of therapy with twin block is effective in mandibular growth deficiencies to induce supplementary lengthening of mandibular by stimulating increased growth at the condylar cartilage. The patient was a ten-year-old male patient with skeletal Class II malocclusion. He had a convex facial profile, SNA (sella, nasion, A point) angle of 77.5°, SNB (sella, nasion, B point) angle of 73.0°, ANB (A point, nasion, B point) angle of 4.5°, overjet of 6.5 mm, overbite of 11/41 = 5.0 mm, 21/31 = 4.5 mm, abnormal upper labial frenulum, crossbite in the second left premolar of maxilla, crowded anterior teeth of mandibular, deficiency of mandibular growth, lower lip sucking habit, anterior teeth of maxilla with diastema and proclination. Orthodontic treatment for patient is a combination of twin block and lip bumper appliances. After seven months, frenectomy is used to eliminate and correct the spacing in the frenulum. After 10 months, the patient’s skeletal and profile had improved to skeletal Class I malocclusion, SNA angle of 78.0°, SNB angle of 75.0°, ANB angle of 3.0°, overbite and overjet of 4.0 mm, and the lower lip sucking habit had stopped. Twin block and lip bumper appliances are particularly good alternative treatment in managing selected cases of skeletal Class II malocclusion.

A Functional Appliance System for the Correction of Class II Relationships

1989 ◽  
Vol 16 (3) ◽  
pp. 169-176 ◽  
Author(s):  
M. J. Trenouth
Keyword(s):  
Case Report ◽  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Posterior Arch ◽  
Class Ii Malocclusion ◽  
Maxillary Expansion ◽  
Functional Appliance ◽  
Twin Block ◽  
Arch Width ◽  
Removable Appliance

A technique is described for the correction of Class II malocclusion involving a functional appliance and consisting of three phases. 1. Adjustment of posterior arch width and dental alignment, using semi-rapid maxillary expansion by means of an upper removable appliance, to co-ordinate the anticipated positions for the arches. 2. Correction of the Class II dental relationships using a modification of the twin-block functional appliance. 3. Retention, using an upper removable appliance with a very steep anterior bite plane. The technique is illustrated by a case report.

scholarly journals Dentoskeletal effects of Class II malocclusion treatment with the Twin Block appliance in a Brazilian sample: A prospective study

2014 ◽  
Vol 19 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Luciano Zilio Saikoski ◽  
Rodrigo Hermont Cançado ◽  
Fabrício Pinelli Valarelli ◽  
Karina Maria Salvatore de Freitas
Keyword(s):  
Class Ii ◽  
Growth Potential ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Twin Block ◽  
Brazilian Sample ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Intergroup Comparison

OBJECTIVE: The aim of this study was to assess the dentoskeletal effects of Class II malocclusion treatment performed with the Twin Block appliance. METHODS: The experimental group comprised 20 individuals with initial mean age of 11.76 years and was treated for a period of 1.13 years. The control group comprised 25 individuals with initial mean age of 11.39 years and a follow-up period of 1.07 years. Lateral cephalograms were taken at treatment onset and completion to assess treatment outcomes. Intergroup comparison was performed by means of the chi-square and independent t tests. RESULTS: The Twin Block appliance did not show significant effects on the maxillary component. The mandibular component showed a statistically significant increase in the effective mandibular length (Co-Gn) and significant improvement in the maxillomandibular relationship. The maxillary and mandibular dentoalveolar components presented a significant inclination of anterior teeth in both arches. The maxillary incisors were lingually tipped and retruded, while the mandibular incisors were labially tipped and protruded. CONCLUSIONS: The Twin Block appliance has great effectiveness for correction of skeletal Class II malocclusion in individuals with growth potential. Most changes are of dentoalveolar nature with a large component of tooth inclination associated with a significant skeletal effect on the mandible.

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 Management of Severe Class II Malocclusion with Fixed Functional Appliance: Forsus

2011 ◽  
Vol 12 (3) ◽  
pp. 216-220 ◽  
Author(s):  
PS Vijayalakshmi ◽  
AS Veereshi
Keyword(s):  
Case Report ◽  
Significant Role ◽  
Orthognathic Surgery ◽  
Class Ii ◽  
Permanent Teeth ◽  
Class Ii Malocclusion ◽  
Functional Appliance ◽  
Growth Modulation ◽  
Fixed Functional Appliance ◽  
Functional Appliances

ABSTRACT Background Management of class II malocclusion in adolescent patients by growth modulation is one of the most debated topics in orthodontics. Noncompliance has been a major concern for orthodontists. Case report This case report describes the management of severe class II malocclusion in adolescent patient using functional appliance system—Forsus to correct class II problems, which is clipped on to bands. This appliance has several advantages, as the patient cannot remove it. It acts on the teeth and jaws for 24 hours each day, patient cooperation is not a problem, and as a result the treatment time is short. There is lot of controversy about the use of functional appliances. Conclusion This case report illustrates that even today, functional appliances have a significant role in the management of class II malocclusion by using growth modulation. The growth modulation minimizes the necessity of extraction of permanent teeth and probably orthognathic surgery. Clinical significance Functional appliances have a significant role in the management of class II malocclusion. The growth modulation minimizes the necessity of extraction of permanent teeth and probably orthognathic surgery. How to cite this article Vijayalakshmi PS, Veereshi AS. Management of Severe Class II Malocclusion with Fixed Functional Appliance: Forsus. J Contemp Dent Pract 2011; 12(3):216-220.

Comparative Analysis of Dentoskeletal Changes of the Twin Block Appliance and the AdvanSync2 Appliance in Treatment of Skeletal Class-II Malocclusion in Pakistani Population: A Randomized Clinical Trial

2021 ◽  
Author(s):  
Fareena Ghaffar ◽  
Abdullah Jan ◽  
Obaid Akhtar ◽  
Alaina T. Mughal ◽  
Rooma Shahid ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Class Ii ◽  
Growth Spurt ◽  
Class Ii Malocclusion ◽  
Twin Block ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Significant Difference ◽  
Functional Appliances

Abstract Objective This study aimed to compare dentoskeletal changes in skeletal class-II malocclusion with removable twin block appliance and fixed AdvanSync2 appliance. Materials and Methods A prospective randomized clinical trial was conducted over a span of 1 year at AFID at Rawalpindi. Thirty patients with skeletal class-II malocclusion, 16 males (53.3%) and 14 females (46.6%), were randomly selected and divided in two equal groups (15 each) to be treated with either fixed functional appliances (FFAs) or with removable functional appliances (RFAs). Out of 30 patients, 15 between cervical vertebral maturation (CVM) stages of 2 and 3 were treated with RFA (twin block appliances) and remaining 15 between CVM stages of 4 and 5 were treated with FFA (AdvanSync2 appliances). Pretreatment (T1) and posttreatment (T2), angular variable, and linear variable were measured to compare the dentoskeletal effects between the two groups. Statitical Analysis Paired sample t-test was used to assess significant difference between variables at T1 (Pre-treatment) and T2 (Post-treatment) stage for both RFA and FFA group. Comparison among the RFA and FFA group was made using non-parametric Mann-Whitney U Test. IBM SPSS version 25.0 was used for evaluation. Results No significant difference was found in angular variables between the RFA and FFA groups (p > 0.05) with the exception of linear variables. Sella-posterior nasal spine (S-PNS) length significantly increased and Jarabak's ratio significantly decreased for FFA group (p = 0.010 and 0.045, respectively), when compared with RFA group. Conclusion Both the appliances, twin block (RFA) and AdvanSync2 (FFA), are effective for correction of skeletal class-II malocclusion. Both the appliances produced similar effects in the sagittal plane but for better vertical control twin block should be the appliance of choice. AdvanSync2 appliance could be preferred over twin block appliance when dentoalveolar and slight retrusive effect on the maxilla is desired especially for individuals in postpubertal growth spurt.

scholarly journals Dentoskeletal effects of Twin Block appliance in patients with Class II malocclusion

2021 ◽  
Author(s):  
Mahamad Irfanulla Khan ◽  
Praveen Kumar Neela ◽  
Nayeem Unnisa ◽  
Ajit Kumar Jaiswal ◽  
Nadeem Ahmed ◽  
...  
Keyword(s):  
Class Ii ◽  
Post Treatment ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Mandibular Growth ◽  
Twin Block ◽  
Lateral Cephalograms ◽  
Division 1 ◽  
Pre Treatment ◽  
Class Ii Division 1

Background and aim. Class II malocclusions are most commonly seen in orthodontic practice and in the recent times Twin Block appliance has been the most popular and widely used among removable functional appliances for the correction of Class II malocclusion in growing patients. The aim of this retrospective study was to evaluate the dentoskeletal effects produced by the Twin Block appliance for the correction of Class II division 1 malocclusion with retrognathic mandible. Methods. Pre-treatment (T1) and post-treatment (T2) lateral cephalograms of 30 patients treated with Twin Block appliance (mean age  =  10.8 ± 1.2 years) for the correction of class II division 1 malocclusion were compared with the 30 untreated class II control patients (mean age 11.2 ± 0.8 years) who did not undergo any treatment during this period. Both the groups were evaluated for the dentoskeletal changes using 24 angular and linear cephalometric measurements. The differences between the pre and post-treatment were calculated using a paired t-test. Results. The cephalometric analysis revealed that the Twin Block appliance stimulated mandibular growth and statistically significant differences were found between the two groups. Twin Block patients showed a statistically very high significant (p<0.001) increase in mandibular length (6.02 mm) compared with the control group (0.3 mm). ‘Headgear effect’ on the maxilla, increase in lower anterior facial height, significant reduction of overjet, overbite and Class I molar relationship was achieved in the Twin Block group. However, no significant changes appeared in the control group. Conclusion: The results of the present study conclude that the Twin Block appliance is effective in the treatment of Class II malocclusion and this is due to a combination of skeletal and dentoalveolar changes in both the arches.

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