scholarly journals Class II correction in orthodontic patients utilizing the Mandibular Anterior Repositioning Appliance (MARA)

2019 ◽  
Vol 89 (3) ◽  
pp. 404-410 ◽  
Author(s):  
Anil Ardeshna ◽  
Frank Bogdan ◽  
Shuying Jiang
Keyword(s):  
Pearson Correlation ◽  
Class Ii ◽  
Maxillary Incisor ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Lateral Cephalograms ◽  
Orthodontic Patients ◽  
Mandibular Anterior Repositioning Appliance ◽  
And Control ◽  
Lower Molar

ABSTRACT Objectives: To evaluate skeletal and dentoalveolar changes produced by the Mandibular Anterior Repostioning Appliance (MARA) in the treatment of Class II malocclusion in adolescent patients. Materials and Methods: Lateral cephalograms of 24 patients, mean age 12.40 years, with a Class II malocclusion consecutively treated with MARA were compared with a historical control group. Changes were evaluated using the Pancherz superimposition and grid analysis pre- and posttreatment. Independent sample t-test, Mann-Whitney U-test, and Pearson correlation coefficient analysis were performed. Results: Significant differences were seen between the treatment and control groups during the 12 month period. Improvement in Class II relationship in the MARA group resulted from skeletal and dentoalveolar changes. There was a 7-mm molar correction and a 4.7-mm overjet reduction. There was also an increase in the mandibular base of 3.3 mm with the lower molar and incisor coming forward 2.6 mm and 2.2 mm, respectively. No significant headgear effect was shown on the maxilla. The maxillary incisor position remained unchanged, whereas the molar distalized 1.8 mm. The anterior lower facial height had an overall increase of 2.2 mm. Conclusions: The MARA was successful in achieving a Class I molar relationship and reducing the overjet in Class II malocclusions. This was the result of both skeletal and dentoalveolar changes.

scholarly journals Treatment Effects of the Herbst Appliance in Class II Malocclusion Patients after the Growth Peak

2020 ◽  
Author(s):  
Rodrigo Hermont Cançado ◽  
Guilherme Janson ◽  
Bryan Tompson ◽  
José Carlos de Castro Alvares ◽  
Fabrício Pinelli Valarelli ◽  
...  
Keyword(s):  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Control Groups ◽  
Lateral Cephalograms ◽  
Treatment Changes ◽  
Fixed Appliances ◽  
And Control ◽  
Experimental Group ◽  
Mandibular Incisors

Abstract Objective The aim of this study was to evaluate dentoskeletal changes in the treatment of Class II malocclusion with the Herbst Cantilever Bite Jumper (CBJ) appliance, associated with multibracket appliances after the growth peak, at pretreatment. Materials and Methods  A sample of 37 individuals was divided into two groups: the experimental group comprised 16 patients treated consecutively for a mean period of 2.52 years with the Herbst CBJ appliance associated with multibracket appliances. A total of 21 subjects (10 males and 11 females) with Class II malocclusion and mean age at T1 of 16.08 years were followed for a mean period of 2.12 years composed the control group. Comparisons between the two groups were performed using initial and final lateral cephalograms. Comparisons between experimental and control groups at pretreatment and of the treatment changes were performed by Mann–Whitney or independent t-tests. Results Experimental group exhibited a significantly greater labial inclination of the mandibular incisors in comparison to the control group. Additionally, significantly greater corrections in overbite, overjet, and molar relationship were observed in the experimental than in the control groups. Conclusion The effects of the Herbst CBJ appliance, associated with fixed appliances after the growth peak in Class II malocclusion treatment are correction in molar relationship toward a Class I relationship, decrease of the overjet, decrease of the overbite, and mandibular incisors labial inclination.

scholarly journals Treatment outcomes of Class II malocclusion cases treated with miniscrew-anchored Forsus Fatigue Resistant Device: A randomized controlled trial

2017 ◽  
Vol 87 (6) ◽  
pp. 824-833 ◽  
Author(s):  
Osama Eissa ◽  
Mahmoud El-Shennawy ◽  
Safaa Gaballah ◽  
Ghada El-Meehy ◽  
Tarek El Bialy
Keyword(s):  
Controlled Trial ◽  
Class Ii ◽  
Maxillary Incisor ◽  
Control Group ◽  
Mandibular Incisor ◽  
Treatment Groups ◽  
Lateral Cephalograms ◽  
Treatment Data ◽  
Group 2 ◽  
Forsus Fatigue Resistant Device

ABSTRACT Objective: To evaluate the skeletal, dental, and soft tissue effects of the Forsus Fatigue Resistant Device (FRD) used with miniscrew anchorage and compare them with those of the conventional Forsus FRD. Materials and Methods: This study was carried out on 38 patients. These patients were randomly allocated into three groups. The 14 patients in group 1 (aged 12.76 ± 1.0 years) were treated with the FRD appliance. In group 2, the 15 patients (aged 12.52 ± 1.12 years) received treatment with FRD using miniscrew anchorage, and the 9 patients in group 3 (aged 12.82 ± 0.9 years) received no treatment as a control group. Linear and angular measurements were made on lateral cephalograms before and immediately after Forsus treatment. Data were analyzed statistically using paired t-, ANOVA, and Tukey tests. Results: Class I molar relationship and overjet correction were achieved in both treatment groups. Although mandibular growth was statistically nonsignificant, there was a significant headgear effect on the maxilla. Mandibular incisor proclination, maxillary incisor retroclination, and distalization of maxillary molars were significant in both treatment groups. However, no significant differences were found between the treatment groups. Conclusions: Class II correction was mainly dentoalveolar in both treatment groups. Use of miniscrews with Forsus did not enhance mandibular forward growth nor prevent labial tipping of the mandibular incisors.

scholarly journals A Retrospective Cephalometric Evaluation of Dental Changes with Activator and Activator Headgear Combination in the Treatment of Skeletal Class II Malocclusion

2011 ◽  
Vol 12 (1) ◽  
pp. 14-18 ◽  
Author(s):  
G Anil Kumar ◽  
Amit Maheshwari
Keyword(s):  
Class Ii ◽  
Combination Group ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Functional Appliances

ABSTRACT Aim The aims of this study were to evaluate the dental changes brought about by activator and activator headgear combination (ACHG) and to determine whether we can achieve control over the lower incisor proclination which is a side effect of using functional appliances; or not, while treating cases of skeletal class II malocclusions. Methods Lateral cephalograms of 45 skeletal class II division 1 patients were selected for the study. Fifteen of them were successfully treated with an Andresen activator and the other 15 with an activator headgear combination. Fifteen class II subjects who had declined treatment served as the control group. Cephalometric landmarks were marked by one author to avoid interobserver variability. Results The results revealed that both the activator and the activator headgear combination significantly (p < 0.001) affected dental variables measured. The mandibular incisor proclination was effectively controlled in the activator headgear combination group. Conclusion An activator headgear combination would offer itself as a better option compared with activator alone in the treatment of skeletal class II malocclusions especially in cases with proclined mandibular incisors. Clinical significance When one of the treatment goals is to achieve a greater control over mandibular incisor proclination in the treatment of Skeletal Class II malocclusions, employing a combination of activator and headgear may substantially improve clinical outcomes. How to cite this article Lall R, Kumar GA, Maheshwari A Kumar M. A Retrospective Cephalometric Evaluation of Dental Changes with Activator and Activator Headgear Combination in the Treatment of Skeletal Class II Malocclusion. J Contemp Dent Pract 2011;12(1):14-18.

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 Evaluation of effect of PowerScopeTM class II corrector on skeletal, dental and Oro-pharyngeal airway dimension in Skeletal class II cases - A controlled prospective clinical study

2021 ◽  
Vol 7 (2) ◽  
pp. 144-149
Author(s):  
Vijaylaxmi Mendigeri ◽  
Sanjay Ganeshkar ◽  
Praveen Ramdurg ◽  
Shruti Singh ◽  
Nishi Grover ◽  
...  
Keyword(s):  
Class Ii ◽  
Control Group ◽  
Prospective Clinical Study ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Pharyngeal Airway ◽  
Skeletal Class Ii ◽  
And Control ◽  
Experimental Group ◽  
Lower Incisors

: The aim of this study was to evaluate the effect of PowerScope (Class II Corrector) on skeletal, dental and oro-pharyngeal airway dimensions in class II malocclusion with retrusive mandible. Twenty patients with age group of 11 to 14 were selected for this study. Experimental group underwent Power scope class II corrector therapy and control group, alignment of only upper arch respectively. Lateral cephalometric radiographs were taken in both experimental group and control group before and after 6 month of treatment. Sixteen measurements in that eight skeletal, five dental and three pharyngeal airway were assessed to know the effect of PowerScope Class II corrector on skeletal, dental and pharyngeal airway PowerScope Class II corrector after treatment showed significant change in SNB (P = 0.01*), ANB (P=0.001*), Inferior airway space (IAS) (P=0.006*), lower incisors position (P=0.0001*) and overjet (P=0.0001*) where as these values were insignificant on comparison with control group except for lower incisors position (P=0.001*) and overjet (P=0.0001*) indicating that PowerScope corrects class II malocclusion mainly by dento alveolar changes not have significant effect on skeletal and oro-pharyngeal airway. Power Scope (Class II corrector) corrects skeletal class II malocclusion mainly by dental changes and has insignificant effect on skeletal and oro-pharyngeal airway.

scholarly journals Morphometric analysis of long-term dentoskeletal effects induced by treatment with Balters bionator

2014 ◽  
Vol 85 (5) ◽  
pp. 790-798 ◽  
Author(s):  
Renato Bigliazzi ◽  
Lorenzo Franchi ◽  
André Pinheiro de Magalhães Bertoz ◽  
James A. McNamara ◽  
Kurt Faltin ◽  
...  
Keyword(s):  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Long Term Effects ◽  
Lateral Cephalograms ◽  
Long Term Follow Up ◽  
Long Term Observation ◽  
Mandibular Retrusion ◽  
Shape Changes

ABSTRACT Objective:  To evaluate the long-term effects of the standard (Class II) Balters bionator in growing patients with Class II malocclusion with mandibular retrusion by using morphometrics (thin-plate spline [TPS] analysis). Materials and Methods:  Twenty-three Class II patients (8 male, 15 female) were treated consecutively with the Balters bionator (bionator group). The sample was evaluated at T0, start of treatment; T1, end of bionator therapy; and T2, long-term observation (including fixed appliances). Mean age at the start of treatment was 10 years 2 months (T0); at posttreatment, 12 years 3 months (T1); and at long-term follow-up, 18 years 2 months (T2). The control group consisted of 22 subjects (11 male, 11 female) with untreated Class II malocclusion. Lateral cephalograms were analyzed at the three time points for all groups. TPS analysis evaluated statistical differences (permutation tests) in the craniofacial shape and size between the bionator and control groups. Results:  TPS analysis showed that treatment with the bionator is able to produce favorable mandibular shape changes (forward and downward displacement) that contribute significantly to the correction of the Class II dentoskeletal imbalance. These results are maintained at a long-term observation after completion of growth. The control group showed no statistically significant differences in the correction of Class II malocclusion. Conclusions:  This study suggests that bionator treatment of Class II malocclusion produces favorable results over the long term with a combination of skeletal and dentoalveolar shape changes.

scholarly journals Dentoskeletal effects produced by a Jasper Jumper with an anterior bite plane

2016 ◽  
Vol 86 (5) ◽  
pp. 775-781 ◽  
Author(s):  
Turi Bassarelli ◽  
Lorenzo Franchi ◽  
Efisio Defraia ◽  
Birte Melsen
Keyword(s):  
Matched Control ◽  
Class Ii ◽  
Control Group ◽  
Comprehensive Treatment ◽  
Class Ii Malocclusion ◽  
Significant Movement ◽  
Lateral Cephalograms ◽  
Division 1 ◽  
Student’S T ◽  
Class Ii Division 1

ABSTRACT Objective:  The aim of this retrospective study was to evaluate the dentoskeletal effects produced by a modified Jasper Jumper with an anterior bite plane for the correction of Class II division 1 malocclusion. Materials and Methods:  A sample of 32 growing patients (mean age  =  11.9 ± 1.4 years) with Class II division 1 malocclusion and increased overbite were treated with a modified Jasper Jumper (JJ) and anterior bite plane protocol and compared with a matched control group of 30 subjects with untreated Class II malocclusion (mean age 12.2 ± 0.8 years). Lateral cephalograms were taken before treatment (T1) and at the end of comprehensive treatment (T2). Mean treatment duration was 2.1 ± 0.4 years. The T1–T2 changes in the two groups were compared with Student’s t-tests for independent samples. Results:  The JJ group was successfully treated to a Class I occlusal relationship with a significant reduction in overjet (–3.9 mm, P &lt; .001) and overbite (–3.1 mm, P &lt; .001). The JJ group exhibited a significant increase in mandibular length and a significant improvement in maxillomandibular sagittal skeletal relationships. The lower incisors were significantly proclined, while the lower first molars demonstrated significant movement in a mesial direction. Conclusions:  Use of a modified JJ appliance and anterior bite plane is an effective protocol for the treatment of Class II malocclusion with increased overbite and greater skeletal (75%) than dentoalveolar (25%) effects mainly at the mandibular level.

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.

scholarly journals DENTOSKELETAL, SOFT TISSUE AND AIRWAY EFFECTS OF THE ADVANSYNC2 IN PATIENTS WITH CLASS II DIV 1 MANDIBULAR RETROGNATHISM: A RETROSPECTIVE STUDY

2020 ◽  
pp. 1-3
Author(s):  
Pasupureddi Keerthana ◽  
Prasad Chitra
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Lower Lip ◽  
Skeletal Class Ii ◽  
Nasolabial Angle ◽  
Soft Tissue Profile ◽  
Lateral Cephalograms ◽  
Mandibular Retrognathism

Objective: To evaluate dentoskeletal, soft tissue and airway changes in Class II malocclusion patients treated with AdvanSync2 Class II corrector in conjunction with fixed appliances. Methods: Forty-five subjects with skeletal and dental Class II malocclusion requiring fixed functional therapy were included. Pre-treatment cephalograms served as control group (Group 1), post treatment cephalograms of patients treated using AdvanSync2, as experimental group (Group 2). Changes in skeletal, dental, soft tissue profile and airway were analyzed on lateral cephalograms using 21 variables from multiple cephalometric analysis. Results were tabulated and data was analyzed using Wilcoxon signed rank test for linear parameters and paired student t test for angular parameters. Results: Maxillary skeletal and dental effects included restriction of growth, upper incisor retrusion and retroclination at p<0.001. Mandibular incisors proclined during treatment. Forward mandibular relocation was noted, though not statistically significant. Upper and lower lip repositioning was achieved, establishing lip competency. Changes in Z angle and nasolabial angle were positive, reducing facial convexity. Significant airway dimensional improvements were noted. Conclusion: AdvanSync2 Class II corrector was effective in treating skeletal Class II malocclusions with mandibular retrognathism. It produced its effects mainly through maxillary restriction and mandibular dentoalveolar changes which furthermore helped in achieving good soft tissue profiles in patients. Positive airway changes were also noted.

scholarly journals Stability of Class II Malocclusion Treatment with the Austro Repositioner Followed by Fixed Appliances in Brachyfacial Patients

2021 ◽  
Vol 18 (18) ◽  
pp. 9793
Author(s):  
Maria Dolores Austro-Martinez ◽  
Ana I. Nicolas-Silvente ◽  
Eugenio Velasco-Ortega ◽  
Alvaro Jimenez-Guerra ◽  
Jose A. Alarcon
Keyword(s):  
Test Group ◽  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Fixed Appliance ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lateral Cephalograms ◽  
Fixed Appliances ◽  
One Year

One of the goals of functional-appliance devices is to modify the vertical growth pattern, solving several kinds of malocclusion. This study aimed to evaluate Class II malocclusion treatment’s stability with Austro Repositioner, followed by fixed appliances, and assess its capacity to modify vertical dimensions in brachyfacial patients. A test group of 30 patients (16 boys and 14 girls, mean 11.9 years old) with Class II malocclusion due to mandibular retrognathism and brachyfacial pattern treated with Austro Repositioner and fixed appliance were compared to a matched untreated Class II control group of 30 patients (17 boys and 13 girls, mean age 11.7 years old). Lateral cephalograms were taken at T1 (initial records), T2 (end of treatment), and T3 (one year after treatment). Statistical comparisons were performed with a paired-sample t-test and two-sample t-tests. Significant improvements in the skeletal Class II relationship were observed in the treated group. The ANB angle decreased (4.75°), the SNB angle increased (3.92°), and the total mandibular length (Co-Pg) increased (8.18 mm) (p < 0.001). Vertical dimensions were also significantly modified, the FMA angle increased (3.94°), LAFH-distance increased (3.15 mm), and overbite decreased (3.35 mm). These changes remained stable one year after treatment. The Austro Repositioner was adequate for treating the skeletal Class II malocclusion resulting from the mandible retrusion in brachyfacial patients.

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