scholarly journals Treatment effects produced by the Twin-block appliance vs the Forsus Fatigue Resistant Device in growing Class II patients

2015 ◽  
Vol 85 (5) ◽  
pp. 784-789 ◽  
Author(s):  
Veronica Giuntini ◽  
Andrea Vangelisti ◽  
Caterina Masucci ◽  
Efisio Defraia ◽  
James A. McNamara Jr ◽  
...  
Keyword(s):  
Observation Interval ◽  
Growth Stimulation ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Twin Block ◽  
Fixed Appliances ◽  
Cephalometric Changes ◽  
Control Samples ◽  
Mandibular Incisors ◽  
Forsus Fatigue Resistant Device

ABSTRACT Objective:  To compare the dentoskeletal changes produced by the Twin-block appliance (TB) followed by fixed appliances vs the Forsus Fatigue Resistant Device (FRD) in combination with fixed appliances in growing patients having Class II division 1 malocclusion. Materials and Methods:  Twenty-eight Class II patients (19 females and 9 males; mean age, 12.4 years) treated consecutively with the TB followed by fixed appliances were compared with a group of 36 patients (16 females and 20 males; mean age, 12.3 years) treated consecutively with the FRD in combination with fixed appliances and with a sample of 27 subjects having untreated Class II malocclusion (13 females and 14 males; mean age, 12.2 years). Mean observation interval was 2.3 years in all groups. Cephalometric changes were compared among the three groups by means of ANOVA and Tukey's post hoc tests. Results:  The FRD produced a significant restraint of the maxilla compared with the TB and control samples (SNA, −1.1° and −1.8°, respectively). The TB sample exhibited significantly greater mandibular advancement and greater increments in total mandibular length than either the FRD or control groups (SNB, 1.9° and 1.5°, respectively; and Co-Gn, 2.0 mm and 3.4 mm, respectively). The FRD produced a significantly greater amount of proclination of the mandibular incisors than what occurred with the TB or the control samples (2.9° and 5.6°, respectively). Conclusion:  The TB appliance produced greater skeletal effects in terms of mandibular advancement and growth stimulation while the Forsus caused significant proclination of the mandibular incisors.

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 Comparison of twin block appliance and Forsus Fatigue Resistant Device therapies on uvulo-glossopharyngeal dimensions: A retrospective study

2021 ◽  
Vol 11 ◽  
pp. 23-31
Author(s):  
Mehmet Ali Yavan ◽  
Merve Aycan ◽  
Dicle Aksoyler ◽  
Aysegul Essiz
Keyword(s):  
Retrospective Study ◽  
Class Ii ◽  
Post Treatment ◽  
Mandibular Advancement ◽  
Functional Therapy ◽  
Twin Block ◽  
Oropharyngeal Airway ◽  
Lateral Cephalograms ◽  
Functional Appliances ◽  
Forsus Fatigue Resistant Device

Objectives: The aim of this study was to compare the effects of two different functional appliances on skeletal, dental, and uvulo-glossopharyngeal dimensions. Materials and Methods: Pre- and post-treatment lateral cephalograms of 50 adolescent Class II patients with a retrognathic mandible were obtained from an archive and divided into two groups according to functional therapy. Twenty-five patients (14 females, 11 males, mean age: 13.5 ± 2.8) who were treated with Forsus Fatigue Resistant Device (FFRD) and 25 patients (17 females, eight males, mean age: 12.5 ± 0.4) who had received functional therapy through the twin block (TWB) were enrolled. Skeletal, dentoalveolar, tongue, uvula, hyoid position, and oropharyngeal airway parameters were measured using the Dolphin software, and uvulo-glossopharyngeal area measurements were performed with the AutoCAD software. Results: The TWB group exhibited remarkable mandibular advancement compared to the FFRD group (P < 0.05). Both of the treatments proclined mandibular incisors, and tongue dimensions increased significantly in both groups (P < 0.05). While the hyoid point moved forward and the oropharyngeal area increased significantly in the TWB group, no significant changes were observed in the FFRD group. The comparison of the TWB and FFRD groups with regard to uvulo-glossopharyngeal dimensions showed no significant differences between the groups (P > 0.05). Conclusion: Changes in uvulo-glossopharyngeal dimensions did not significantly vary between the two different functional therapies.

scholarly journals Three-dimensional effects of the mini-implant–anchored Forsus Fatigue Resistant Device: A randomized controlled trial

2015 ◽  
Vol 86 (2) ◽  
pp. 292-305 ◽  
Author(s):  
Sherif A. Elkordy ◽  
Amr M. Abouelezz ◽  
Mona M. Salah Fayed ◽  
Khaled H. Attia ◽  
Ramy Abdul Rahman Ishaq ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Three Dimensional ◽  
Class Ii ◽  
Control Group ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Skeletal Effects ◽  
Implant Anchorage ◽  
Mandibular Incisors ◽  
Forsus Fatigue Resistant Device

ABSTRACT Objective:  To detect three-dimensionally the effects of using mini-implant anchorage with the Forsus Fatigue Resistant Device (FFRD). Materials and Methods:  The sample comprised 43 skeletal Class II females with deficient mandibles. They were randomly allocated into three groups: 16 patients (13.25 ± 1.12 years) received FFRD alone (Forsus group), 15 subjects (13.07 ± 1.41 years) received FFRD and mini-implants (FMI group), and 12 subjects (12.71 ± 1.44 years) were in the untreated control group. Three-dimensional analyses of cone beam computed tomographic images were completed, and the data were statistically analyzed. Results:  Class I relationship and overjet correction were achieved in 88% of the cases. None of the two treatment groups showed significant mandibular skeletal effects. In the FMI group, significant headgear effect, decrease in maxillary width, and increase in the lower facial height were noted. In the FMI group, retroclination of maxillary incisors and distalization of maxillary molars were significantly higher. Proclination and intrusion of mandibular incisors were significantly greater in the Forsus group. Conclusions:  FFRD resulted in Class II correction mainly through dentoalveolar effects and with minimal skeletal effects. Utilization of mini-implant anchorage effectively reduced the unfavorable proclination and intrusion of mandibular incisors but did not produce additional skeletal effects.

scholarly journals Class II subdivision treatment with the Forsus Fatigue Resistant Device vs intermaxillary elastics

2016 ◽  
Vol 87 (3) ◽  
pp. 371-376 ◽  
Author(s):  
Isil Aras ◽  
Aylin Pasaoglu
Keyword(s):  
Treatment Phase ◽  
Class Ii ◽  
Occlusal Plane ◽  
Comprehensive Treatment ◽  
Fixed Appliance ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Fixed Appliances ◽  
The Difference ◽  
Mandibular Incisors

ABSTRACT Objective: To compare the effectiveness of comprehensive fixed appliance treatments implemented in combination with Forsus or intermaxillary elastics in Class II subdivision subjects. Materials and Methods: Twenty-eight Class II subdivision patients were allocated to two groups using matched randomization: Forsus group (mean age, 14.19 ± 1.02 years) and elastics group (mean age, 13.75 ± 1.16 years). Patients received fixed appliance therapy in combination with either Forsus or intermaxillary elastics. The study was conducted on lateral cephalograms and digital models acquired before orthodontic treatment and 10–12 weeks after the fixed appliances were removed. Results: The treatment phase comprising the use of Forsus (4.53 ± 0.91 months) was significantly shorter compared with elastics application (6.85 ± 1.08 months). This was also true for comparing duration of overall comprehensive treatment in both groups. Extrusion and palatal tipping of maxillary incisors and clockwise rotation of the occlusal plane were greater in the elastics group (P &lt; .05). The mandibular incisors were proclined in both groups (P &lt; .001), but no significant difference was observed between groups (P &gt; .05). The mandibular incisors showed intrusion in the Forsus group and extrusion in the elastics group; the difference between groups was significant (P &lt; .05). Overbite was decreased in both groups (P &lt; .001) in similar amounts. Improvement in overjet, mandibular midline deviation, and correction of molar relationship on the Class II side were greater in the Forsus group (P &lt; .05). Conclusion: Forsus is more effective for correcting Class II subdivision malocclusion in a shorter treatment period with minimal patient compliance required.

scholarly journals Mode of correction is related to treatment timing in Class II patients treated with the mandibular advancement locking unit (MALU) appliance

2017 ◽  
Vol 87 (3) ◽  
pp. 363-370
Author(s):  
Muhsin Candir ◽  
Heidi Kerosuo
Keyword(s):  
Group Treatment ◽  
Treatment Initiation ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Skeletal Maturation ◽  
Total Change ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

ABSTRACT Objective: To investigate the proportion of skeletal/dentoalveolar components for correction of Class II malocclusion in relation to the pubertal growth peak (PGP) among patients treated with the mandibular advancement locking unit (MALU) appliance. Materials and Methods: We conducted a retrospective study of 27 orthodontic patients (age range: 12–18 years; mean age 14.9 years) with skeletal Class II Division 1 malocclusion who were treated with the MALU appliance until they reached Class I occlusion with overjet and overbite within normal range. Pretreatment (T1) and posttreatment (T2) lateral cephalograms were analyzed using standard cephalometrics and sagittal occlusion analysis to assess changes in the dentoalveolar and skeletal complex. The cervical vertebral maturation (CVM) method was used to determine participants' skeletal maturation in T1 cephalograms. Based on this maturation, participants were divided into two groups: the peak group (treatment initiation before or during PGP [peak group, n=15]) or the postpeak group (treatment initiation after the PGP [n = 12]). Results: No significant differences between groups were found at T1 for most of the skeletal and dental parameters investigated. At T2, the mean ANB angle and proclination of the mandibular incisors were significantly smaller in the peak group than in the postpeak group. In the peak group, skeletal correction comprised 54% and dental correction 46% of the total change at T2, while in the postpeak group the corresponding figures were 24% and 76%, respectively. Conclusions: Treatment initiated before or during PGP seems to result in a more favorable SNA/SNB relationship and less tipping of the mandibular incisors than when treatment is initiated after PGP.

scholarly journals Two Phase Therapy for Class II Division 1 Malocclusion - A Case Report

2017 ◽  
Vol 07 (03) ◽  
pp. 058-062
Author(s):  
Suraj Prasad Sinha ◽  
Akhil Shetty ◽  
M. S. Ravi ◽  
U.S. Krishna Nayak
Keyword(s):  
Case Report ◽  
Class Ii ◽  
Mandibular Advancement ◽  
Second Phase ◽  
Two Phase ◽  
Twin Block ◽  
Skeletal Class ◽  
Good Function ◽  
Skeletal Class Ii ◽  
Division 1

AbstractA 13 year old growing male reported with a complaint of forwardly placed upper front teeth. The case was diagnosed to be Skeletal Class II due to retrognathic mandible. Since the patient was in the growing phase, two phase treatment was planned. The First phase comprised of mandibular advancement using TWIN BLOCK. The final finishing and detailing was achieved in the Second phase of treatment using 0.022 MBT Prescription (self-legating) to produce well-aligned arches in good function and aesthetics.

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.

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