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 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.

scholarly journals Mini-implant Supported Lip Bumper

2021 ◽  
pp. 030157422110221
Author(s):  
Aravinthrajkumar Govindaraj ◽  
Ashwin Mathew George
Keyword(s):  
Normal Growth ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Lower Lip ◽  
Skeletal Class ◽  
Mini Implants ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Lip Bumper

Patients with a skeletal class II malocclusion are usually associated with a prognathic maxilla with orthognathic mandible or a retrognathic mandible with orthognathic maxilla or a combination of both. Patients with severe prognathic maxilla are usually associated with increased overjet which results in a lower lip trap. The lip trap should be managed the earliest as it will lead to further proclination of the upper anterior teeth and also hinder the normal growth of the mandible. To overcome the limitations of a conventional lip bumper, we arrived at an idea of fixed lip bumper supported using mini-implants.

Orthodontic Treatment of Maxillary Incisors with Severe Root Resorption Caused by Bilateral Canine Impaction in a Class II Division 1 Patient

2016 ◽  
Vol 40 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Na-Young Chang ◽  
Jae Hyun Park ◽  
Mi-Young Lee ◽  
Jin-Woo Cho ◽  
Jin-Hyoung Cho ◽  
...  
Keyword(s):  
Root Resorption ◽  
Class Ii ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Division 1 ◽  
Impacted Canine ◽  
Labial Side ◽  
Maxillary Incisors ◽  
Maxillary Dentition

This case report shows the successful alignment of bilateral impacted maxillary canines. A 12-year-old male with the chief complaint of the protrusion of his maxillary anterior teeth happened to have bilateral maxillary canine impaction on the labial side of his maxillary incisors. Four maxillary incisors showed severe root resorption because of the impacted canines. The patient was diagnosed as skeletal Class II malocclusion with proclined maxillary incisors. The impacted canine was carefully retracted using sectional buccal arch wires to avoid further root resorption of the maxillary incisors. To distalize the maxillary dentition, two palatal miniscrews were used. After 25 months of treatment, the maxillary canines were well aligned without any additional root resorption of the maxillary incisors.

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&reg; 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&trade;) 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.

scholarly journals Alveolar bone loss around mandibular anterior teeth in Class I, II, and III malocclusions: a CBCT evaluation study

2020 ◽  
Author(s):  
Zixiao Wang ◽  
Zhigui Ma ◽  
Chi Yang
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Class Ii ◽  
Alveolar Bone Loss ◽  
Class I ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Bone Thickness ◽  
Anterior Teeth ◽  
Significant Difference

Abstract Background: To quantitatively and qualitatively evaluate alveolar defects of mandibular anterior alveolar bone in three different types of malocclusion with cone-beam computed tomography (CBCT).Methods: A total of 542 teeth from 30 skeletal class I malocclusion (mean age: 19.26±5.63), 33 class II malocclusion (mean age: 19.36±4.17), and 28 class III malocclusion (mean age: 21.47±4.53) patients were evaluated with CBCT. Sagittal sectional views were evaluated with regard to labial and lingual alveolar bone thickness and vertical alveolar bone level. Analysis of variance and Tukey’s test were used for statistical comparisons at P<.05 Results: Qualitative analysis: Class II (64.47%) and Class III malocclusions (58.43%) had higher prevalence of dehiscence than Class I malocclusions (32.96%),P<0.05. No significant difference was found in the prevalence of fenestration among the three groups. Quantitative analysis: In general, Class II and III groups had lesser alveolar bone volume than the Class I group. Furthermore, the vertical alveolar height and coronal alveolar bone thickness in Class II malocclusion was significantly lesser than that in the Class III group. Conclusions: The Class II group, followed by the class III group, showed the most severe alveolar bone deficiency For these patients undergoing orthodontic treatment, special care should be taken to avoid aggravated preexisting alveolar bone loss in the mandibular anterior teeth.

ISW for the Treatment of Adult Skeletal Class II Case with Temporary Anchorage Device

2021 ◽  
pp. 1-6
Author(s):  
Huang Chun-Yi ◽  
◽  
Yu Jian-Hong ◽  
Lin Chih-Chieh ◽  
◽  
...  
Keyword(s):  
Case Report ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Invasive Treatment ◽  
Anterior Crowding ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Skeletal Class Ii ◽  
Mandibular Plane ◽  
Temporary Anchorage Device

Patients with a Class II malocclusion, proclination, severe crowding of the maxillary and mandibular anterior teeth, and high mandibular plane angles are a treatment-planning challenge. This case report describes an orthodontic treatment and maxillary premolar extraction without orthognathic surgery for a 18-year old man. Maximum anchorage is needed for upper anterior retraction by using Temporary Anchorage Device (TAD’s). The use of IME and ISW unilateral MEAW was important to relieve upper and lower anterior crowding. After treatment, the patient had a better profile, adequate overjet and overbite. This case report demonstrates that a minimally invasive treatment can successfully correct a severe skeletal Class II malocclusion with large overjet.

Uso de propulsor mandibular fixo Flex Developer como recurso no tratamento da Classe II em paciente não colaborador

2020 ◽  
Vol 13 (52) ◽  
pp. 40-51
Author(s):  
Renato Barcellos Rédua
Keyword(s):  
Upper Airway ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Advantages And Disadvantages ◽  
Skeletal Class Ii ◽  
High Incidence ◽  
Therapeutic Alternatives ◽  
Smile Aesthetics ◽  
Treatment Alternatives

Class II malocclusion has a high incidence in the population, which may compromise smile aesthetics, occlusion function and stability. Skeletal Class II may affect facial aesthetics and upper airway volume. Class II malocclusion is routinely associated with skeletal Class II condition, having as treatment alternatives the use of Extra Buccal Appliance (EBA) or removable or fixed propulsor appliance. This article describes a case of a patient who did not accept the use of EBA and so it was fitted a Flex Developer propulsor for Class II correction and discussed the advantages and disadvantages of therapeutic alternatives for Class II correction.

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