scholarly journals The Effect of High Frequency Vibration on Tooth Movement and Alveolar Bone in Non-Growing Skeletal Class II High Angle Orthodontic Patients: Case Series

2020 ◽  
Author(s):  
Tarek El-Bialy
Keyword(s):  
High Frequency ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Case Series ◽  
Class Ii ◽  
Posterior Teeth ◽  
High Frequency Vibration ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lower Incisors

This study presents a novel technique utilizing high frequency vibration to shorten treatment time and preserve alveolar bone in challenging orthodontic cases treated with Invisalign® clear aligners. Four non-growing orthodontic patients (age range 14-47 years old) with Class II skeletal patterns (convex profiles with retrognathic mandibles) who sought correction of their crowded teeth and non-surgical correction of their convex profiles were included in this study. These patients were treated using Invisalign clear aligners together with high frequency vibration (HFV) devices (120 Hz) (VPro5™) that were used by all patients for five minutes per day during active orthodontic treatment. Vertical control and forward rotation of the mandible for each patient was achieved through pre-programming the Invisalign to produce posterior teeth intrusion. Successful forward rotation of the mandibles achieved in all patients led to improvement of their facial convex profiles (ANB improved 2.1 + 0.5 degrees; FMA improved 1.2 +1.1 degrees). Dental decompensation was achieved by lingual tipping of the lower incisors and palatal root torque of upper incisors. The use of HFV together with Invisalign facilitated achieving these results within a 12+6 month period. In addition, more bone labial to the lower incisors after their lingual movement was noted. In conclusion, the use of HFV concurrent with SmartTrack Invisalign aligners allowed complex tooth movement and forward projection without surgery in non-growing patients with skeletal Class II relationships. The clinical impact and implications of this case series is that the use of HFV facilitates complex orthodontic tooth movement including posterior teeth intrusion and incisor decompensation in addition to increased bone formation labial to lower incisors that may minimize future gum recession due to their labial inclination.

scholarly journals The Effect of High-Frequency Vibration on Tooth Movement and Alveolar Bone in Non-Growing Skeletal Class II High Angle Orthodontic Patients: Case Series

2020 ◽  
Vol 8 (4) ◽  
pp. 110
Author(s):  
Tarek El-Bialy
Keyword(s):  
High Frequency ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Case Series ◽  
Class Ii ◽  
Posterior Teeth ◽  
High Frequency Vibration ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Lower Incisors

This study presents a novel technique utilizing high-frequency vibration to shorten treatment time and preserve alveolar bone in challenging orthodontic cases that have been treated with Invisalign® clear aligners. Four non-growing orthodontic patients (age range 14–47 years old) with Class II skeletal patterns (convex profiles with retrognathic mandibles) who sought correction of their crowded teeth and non-surgical correction of their convex profiles were included in this study. These patients were treated using Invisalign clear aligners together with high-frequency vibration (HFV) devices (120 Hz) (VPro5™) that were used by all patients for five minutes per day during active orthodontic treatment. Vertical control and forward rotation of the mandible for each patient was achieved through pre-programming the Invisalign to produce posterior teeth intrusion. Successful forward rotation of the mandibles achieved in all patients led to improvement of their facial convex profiles (apical base relationship (ANB) improved 2.1 ± 0.5 degrees; FMA (Frankfurt mandibular plane angle) improved 1.2 + 1.1 degrees). Dental decompensation was achieved by lingual tipping of the lower incisors and palatal root torque of upper incisors. The use of HFV together with Invisalign facilitated achieving these results within a 12 ± 6 months period. In addition, more bone labial to the lower incisors after their lingual movement was noted. In conclusion, the use of HFV concurrent with SmartTrack Invisalign aligners allowed complex tooth movement and forward mandibular projection without surgery in non-growing patients with skeletal Class II relationships. The clinical impact and implications of this case series are: (1) the use of HFV facilitates complex orthodontic tooth movement including posterior teeth intrusion and incisor decompensation; (2) forward mandibular projection of the mandible and increased bone formation labial to lower incisors can be achieved in non-growing patients that may minimize the need for surgical intervention in similar cases or gum recession due to lower incisors labial inclination.

Anterior Labial Alveolar Bone Thickness After Orthodontic Retraction Of Anterior Teeth

2021 ◽  
Vol 03 ◽  
Author(s):  
Hilda Fitria Lubis ◽  
Aditya Rachmawati ◽  
Stephani Tanius
Keyword(s):  
Alveolar Bone ◽  
Tooth Movement ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Bone Thickness ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Maxillary Incisors ◽  
The Relationship

Introduction: Correction of skeletal Class II malocclusion generally requires extraction of the premolars, followed by the retraction of the anterior teeth to reduce overjet. Morphometric evaluation of alveolar bone can be used to study the limitation of tooth movement to avoid adverse effects. The purpose of this study is to measure the changes in the bone thickness of the maxillary incisors in skeletal Class II malocclusion patients after retraction and determine the relationship between changes in bone thickness and the amount of retractions using lateral cephalometric radiographs. Materials and methods: The design of this study was to determine the cross-sectional changes in bone thickness in linear directions after retraction and the relationship between changes in bone thickness and the amount of retraction. Bone thickness in the linear directions was measured using digital cephalometric radiographs. Results: The measurement results from tracing 43 lateral cephalometric before and after anterior retraction treatment showed that there was a difference in alveolar bone thickness at the 9mm level from the CEJ in a linear direction on the anterior retraction of skeletal Class II malocclusion maxillary incisors (p <0.05), however, there was no difference in alveolar bone thickness at levels 3 and 6 mm from CEJ in the linear direction, and the angular direction (p> 0.05). Changes in alveolar bone thickness did not correlate with the amount of incisor retraction (p> 0.05). Conclusion: The results showed that the change in labial alveolar bone thickness was not significantly correlated to the amount of retraction.

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.

Evaluation of Cephalometric Standards for Zanjanian Population According to Downs' Analysis

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Katayoon Khaleghi ◽  
Azin Nourian ◽  
Pooya Ghorbankhan ◽  
Arash Farzan
Keyword(s):  
Statistical Analysis ◽  
Class Ii ◽  
Plane Angle ◽  
Gender Comparison ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Mandibular Plane ◽  
Significant Difference ◽  
Males And Females ◽  
Lower Incisors

Background: Following the morphological features of different races and ethnic groups, knowledge of standard dentofacial patterns of each ethnic group is essential. Therefore, this study aimed to explain cephalometric standards for the Zanjanian population according to Downs' analysis and compare them to Caucasian individuals. Methods: Seventy lateral cephalometries of Zanjanian adults (17 - 29 years old) who had been referred to a private orthodontic office in Zanjan, Iran with class I molar and canine relationship and normal overjet and overbite as well as minimum crowding/spacing/rotations were scanned and traced with the Novatech scanner and Dolphin software version 10. Next, statistical analyses were performed in order to compare the Zanjanian population to Caucasians. Results: We found a significant difference between males and females in terms of interincisal angle, incisor-occlusal angle, incisor-mandibular plane angle, upper incisor proclination, facial angle, and angle of convexity. Discussion: The analysis of six statistically significant parameters indicates that the upper and lower incisors in women of Zanjan were proclined and protruded compared with those of Caucasian subjects. Due to the statistical analysis on facial angle and angle of convexity, women also show more maxillary prognathism and skeletal class II pattern. Generally, a comparison of Zanjanian population cephalometrics based on Downs' analysis showed an increase in maxillary prognathism, maxillary and mandibular incisal protrusion and posterior rotation of the mandible. Conclusions: In conclusion, the Zanjanian population tends to have more dental and skeletal class II patterns than the Caucasians. In addition, gender comparison indicates lower and upper-incisors protrusion in women of Zanjan.

Orthodontic Treatment of Skeletal Class II Adolescent with Anterior Open Bite using Mini-Screws and Modified Palatal Anchorage Plate

2015 ◽  
Vol 39 (2) ◽  
pp. 187-192 ◽  
Author(s):  
YA Kook ◽  
JH Park ◽  
Y Kim ◽  
CS Ahn ◽  
M Bayome
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
And Control

This article presents a non-extraction orthodontic treatment case using mini-screws and a modified palatal anchorage plate (MPAP) to intrude the maxillary posterior teeth, and distalize the whole arch dentition and control the extrusion of the maxillary posterior dentition during distalization.

scholarly journals Effect of Incisor Angulation on Overjet and Overbite in Class II Camouflage Treatment

2007 ◽  
Vol 77 (6) ◽  
pp. 1011-1018 ◽  
Author(s):  
Yasinee Sangcharearn ◽  
Christopher Ho
Keyword(s):  
Class Ii ◽  
Regression Coefficients ◽  
Lower Incisor ◽  
Skeletal Class ◽  
Premolar Extraction ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Set Up ◽  
Extraction Treatment ◽  
Lower Incisors

Abstract Objectives: To determine the amount of variation in overjet and overbite that may result from changes in upper and lower incisor angulations following upper first premolar extraction treatment in Class II malocclusions. Materials and Methods: Typodonts were set up to simulate a skeletal Class II occlusion treated with upper first premolar extractions. The upper incisor angulation was altered through a range from 100° to 120° to the palatal plane by 2° increments. The overjet and overbite were measured with every 2° of upper incisor angulation change. A regression analysis was performed on the experimental data, and the regression coefficients, slope, and intercept were estimated. Results: Excessive proclination of the lower incisors will result in an abnormal overjet and overbite relationship for any magnitude of upper incisor angulation. A normal lower incisor angulation facilitates the attainment of an optimal occlusion. Excessive palatal root torque of the upper incisors will result in an increase in overjet and a consequent decrease in overbite. If the upper incisors are excessively retroclined, an edge-to-edge incisor relationship will result. Conclusion: Class II camouflage treatment with upper first premolar extractions requires correctly angulated incisors to achieve optimal buccal segment interdigitation and incisor relationship. Labial root torque and interproximal reduction of the lower anterior teeth should be considered when the lower incisors are excessively proclined.

Correction of skeletal Class II malocclusions with deep bite by rapid extrusion of posterior teeth

1984 ◽  
Vol 58 (6) ◽  
pp. 631-636 ◽  
Author(s):  
Michael R. Zetz ◽  
C.D. Dean ◽  
A.G. Burris ◽  
A.R. Griffith
Keyword(s):  
Class Ii ◽  
Posterior Teeth ◽  
Deep Bite ◽  
Skeletal Class ◽  
Skeletal Class Ii

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.

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