scholarly journals Dental, skeletal and soft tissue effects of the Distal Jet appliance: A prospective clinical study

2019 ◽  
Vol 24 (6) ◽  
pp. 56-64 ◽  
Author(s):  
Rachelle Simões Reis ◽  
José F. C. Henriques ◽  
Guilherme Janson ◽  
Karina Maria Salvatore Freitas ◽  
Wilana Moura
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Plane Angle ◽  
Tissue Effects ◽  
Mandibular Plane ◽  
Maxillary Incisors ◽  
Distal Jet ◽  
Mandibular Plane Angle

ABSTRACT Objective: This study evaluated the dental, skeletal and soft tissue effects in Class II malocclusion patients treated with Distal Jet appliance, compared to an untreated control group. Methods: 44 patients with Class II malocclusion were divided into two groups: Group 1 (experimental) - 22 patients, mean age of 12.7 years, treated with the Distal Jet appliance for a mean period of 1.2 years; Group 2 (control) - 22 untreated patients, mean age of 12.2 years, followed by a mean period of 1.2 years. Lateral cephalograms were obtained before treatment (T0) and at the end of the distalization (T1).Independent t test was used to identify intergroup differences. Results: When compared to control group, the Distal Jet produced a significant increase in mandibular plane angle (0.7 ± 2.0o). The maxillary second molars presented distal inclination (6.6 ± 3.8o), distalization (1.1 ± 1.1 mm) and extrusion (1.3 ± 2.1 mm). The maxillary first molars distalized by 1.2 ± 1.4 mm. The maxillary first premolars mesialized by 3.4 ± 1.1 mm. The maxillary incisors showed slight labial tipping of 4.3 ± 4.7o and were protruded by 2.4 ± 1.7 mm. There were no significant changes in the facial profile. The overjet increased 1.5 ± 1.1 mm and overbite had no significant changes. Conclusion: The Distal Jet appliance is effective to distalize the maxillary first molars, but promotes increase in mandibular plane angle, distal inclination, extrusion and distalization of maxillary second molars, mesialization of maxillary first premolars, proclination and protrusion of maxillary incisors, and increase in overjet, when compared to a control group.

scholarly journals Class II malocclusion treatment effects with Jones Jig and Distal Jet followed by fixed appliances

2017 ◽  
Vol 88 (1) ◽  
pp. 10-19 ◽  
Author(s):  
Lorena Vilanova ◽  
José Fernando Castanha Henriques ◽  
Guilherme Janson ◽  
Mayara Paim Patel ◽  
Rachelle Simões Reis ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Occlusal Plane ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Mandibular Incisor ◽  
Tissue Changes ◽  
Fixed Appliances ◽  
Soft Tissue Changes ◽  
Distal Jet

ABSTRACT Objectives: To compare the skeletal, dentoalveolar, and soft tissue changes in Class II malocclusion patients treated with Jones Jig and Distal Jet distalizers followed by fixed appliances. Materials and Methods: The experimental groups comprised 45 Class II malocclusion subjects divided into two groups. Group 1 consisted of 25 patients treated with the Jones Jig, and group 2 consisted of 20 patients treated with the Distal Jet. Group 3 comprised 19 untreated Class II subjects. Cephalograms were analyzed before and after orthodontic treatment. For intergroup comparisons, one-way analysis of variance and post hoc Tukey tests were performed. Results: During treatment, the experimental groups exhibited significant increases in occlusal plane inclination and maxillary second molar mesial tipping. Additionally, the molar relationship improved and overjet decreased significantly in the experimental groups. The Jones Jig group showed greater mandibular incisor proclination and greater overbite reduction than the control group. No significant intergroup differences in nasolabial angle changes were found. Conclusions: Treatment protocols using the Jones Jig and Distal Jet followed by fixed appliances were effective in correcting Class II malocclusion by means of dentoalveolar changes without significant skeletal and soft tissue changes. The experimental groups showed occlusal plane clockwise rotation and greater mesial tipping of maxillary second molars when compared to the untreated group.

Dental and skeletal effects after total arch distalization using modified C-palatal plate on hypo- and hyperdivergent Class II malocclusions in adolescents

2020 ◽  
Author(s):  
Chang Yoon Jung ◽  
Jae Hyun Park ◽  
Ja Hyeong Ku ◽  
Nam-Ki Lee ◽  
Yoonji Kim ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Study Group ◽  
Class Ii Malocclusion ◽  
Plane Angle ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Palatal Plate ◽  
Skeletal Effects ◽  
Facial Types

ABSTRACT Objectives To compare the dental and skeletal treatment effects after total arch distalization using modified C-palatal plates (MCPPs) on adolescent patients with hypo- and hyperdivergent Class II malocclusion. Materials and Methods The study group included 40 patients with Class II malocclusion (18 boys and 22 girls, mean age = 12.2 ± 1.4 years) treated with MCPPs. Fixed orthodontic treatment started with the distalizing process in both groups. Participants were divided into hypo- or hyperdivergent groups based on their pretreatment Frankfort mandibular plane angle (FMA) ≤22° or ≥28°, respectively. Pre- and posttreatment lateral cephalograms were digitized, and 23 variables were measured and compared for both groups using paired and independent t-tests. Results The hyper- and hypodivergent groups showed 2.7 mm and 4.3 mm of first molar crown distalizing movement, respectively (P < .001). The hypodivergent group had a slight 2.2° crown distal tipping of first molars compared with 0.3° in the hyperdivergent group. After distalization, the FMA increased 3.1° and 0.3°, in the hypodivergent and hyperdivergent groups, respectively (P < .001). SNA decreased in the hypodivergent group, while other skeletal variables presented no statistically significant differences in the changes between the groups. Conclusions The hypodivergent group showed more distal and tipping movement of the maxillary first molar and increased FMA than the hyperdivergent group. Therefore, clinicians must consider vertical facial types when distalizing molars using MCPPs in Class II nonextraction treatment.

scholarly journals The maxillary incisor display at rest: analysis of the underlying components

2018 ◽  
Vol 23 (6) ◽  
pp. 48-55 ◽  
Author(s):  
Waqar Jeelani ◽  
Mubassar Fida ◽  
Attiya Shaikh
Keyword(s):  
Soft Tissue ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Plane Angle ◽  
Upper Lip ◽  
Facial Height ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
The Relationship ◽  
Mandibular Plane Angle

ABSTRACT Introduction: Maxillary incisal display is one of the most important attributes of smile esthetics. Objective: The aim of this study was to determine the relationship between maxillary incisal display at rest (MIDR) and various soft tissue, hard tissue and dental components. Methods: A cross-sectional study was conducted on 150 subjects (75 males, 75 females) aged 18-30 years. The MIDR was recorded from the pretreatment orthodontic records. The following parameters were assessed on lateral cephalograms: ANB angle, mandibular plane angle, palatal plane angle, lower anterior and total anterior facial heights, upper incisor inclination, upper anterior dentoalveolar height, and upper lip length, thickness and protrusion. The relationship between MIDR and various skeletal, dental and soft tissue components was assessed using linear regression analyses. Results: The mean MIDR was significantly greater in females than males (p = 0.011). A significant positive correlation was found between MIDR and ANB angle, mandibular plane angle and lower anterior facial height. A significant negative correlation was found between MIDR and upper lip length and thickness. Linear regression analysis showed that upper lip length was the strongest predictor of MIDR, explaining 29.7% of variance in MIDR. A multiple linear regression model based on mandibular plane angle, lower anterior facial height, upper lip length and upper lip thickness explained about 63.4% of variance in MIDR. Conclusions: Incisal display at rest was generally greater in females than males. Multiple factors play a role in determining MIDR, nevertheless upper lip length was found to be the strongest predictor of variations in MIDR.

Dentoskeletal and Soft Tissue Effects in the Treatment of Class II Malocclusion with Klammt's Elastic Open Activator

2016 ◽  
Vol 17 (1) ◽  
pp. 63-69
Author(s):  
Sheila Marques Inamassu-Lemes ◽  
Acácio Fuziy ◽  
André Luiz Ferreira Costa ◽  
Paulo Eduardo Guedes Carvalho ◽  
Ana Carla Raphaelli Nahás-Scocate
Keyword(s):  
Soft Tissue ◽  
Conflicts Of Interest ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Lower Lip ◽  
Skeletal Changes ◽  
Tissue Effects ◽  
Age Range ◽  
Cephalometric Measurements ◽  
Lower Incisors

ABSTRACT Aim The purpose of this study was to evaluate the dentoskeletal and soft tissue effects resulting from treatment with Klammt's elastic open activator (EOA) functional orthopedic appliance in patients with Class II malocclusion characterized by mandibular deficiency. Materials and methods Teleradiographs were evaluated in the lateral aspect of the initial (T1) and final (T2) orthopedic phases for 16 patients with Class II, Division 1 malocclusion. The age range was from 9 to 11.2 years, with a mean age of 9.9 years. The cephalometric points were demarcated, and cephalometric measurements were obtained by the same investigator to avoid interobserver variability. Results The EOA promoted increased lower anterior facial height (LAFH), increased effective mandibular length, clockwise rotation of the mandible, retrusion and verticalization of the upper incisors, proclination and protrusion of the lower incisors, extrusion of the upper molars, mesial movement of the lower molars and anterior projection of the lower lip. Conclusion Skeletal changes characterized by an increase in mandibular length and dentoalveolar changes with an emphasis on the verticalization and retrusion of the upper incisors, proclination of the lower incisors and mesial positioning of the lower molars were key to improving the occlusal relationship and esthetic facial factors. Clinical significance The EOA is well indicated in patients with Class II malocclusion due to mandibular deficiency with increased overbite, proclined upper incisors and verticalized lower incisors. How to cite this article Inamassu-Lemes SM, Fuziy A, Costa ALF, Carvalho PEG, Nahás-Scocate ACR. Dentoskeletal and Soft Tissue Effects in the Treatment of Class II Malocclusion with Klammt's Elastic Open Activator. J Contemp Dent Pract 2016;17(1):63-69. Conflicts of Interest None declared

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