A cephalometric appraisal of hard and soft tissue changes in Class II, Division 1 (angle) malocclusions following orthodontic therapy

The present study was undertaken to evaluate and compare the skeletal, dental, and soft tissue changes in skeletal Class II division 1 cases treated with Twin Block and Clear Block appliances using a cephalogram. A total of 40 patients of age between 12-14 years were randomly divided into two equal groups. Group 1: treated with Twin Block appliance and Group 2: treated with Clear Block appliance. The pre-treatment lateral cephalogram was taken and skeletal, dental, and soft tissue parameters were evaluated and the appliance was delivered. After 8 months, another lateral cephalogram of all the cases was taken and analyzed. The pre and post-treatment values were compared between the two groups. The pre-treatment cases were almost comparable in skeletal, dental, and soft tissue features in both groups. There was a significant change in mandibular growth by SNB angle. The retrusion and extrusion of maxillary incisors as well as a proclination and extrusion of mandibular incisors were seen in group 1 while no change was observed in group 2. Treatment with Clear Block appliances has shown significant and favorable Skeletal, Dental and Soft tissue changes which are similar to already proven by the Twin Block appliance. Clear Block provides an esthetic and less bulky option for growth modification with similar results as compared to conventional Twin Block with the additional benefit of preventing lower incisor proclination.

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Dentoskeletal and Soft Tissue Effects of Mini-Implants in Class II division 1 Patients

The Angle Orthodontist ◽

10.2319/013008-52.1 ◽

2009 ◽

Vol 79 (2) ◽

pp. 240-247 ◽

Cited By ~ 24

Author(s):

Madhur Upadhyay ◽

Sumit Yadav ◽

K. Nagaraj ◽

Ravindra Nanda

Keyword(s):

Soft Tissue ◽

Treatment Effects ◽

Class Ii ◽

Complete Space ◽

Mini Implants ◽

Anterior Teeth ◽

Lateral Cephalograms ◽

Division 1 ◽

Soft Tissue Changes ◽

Class Ii Division 1

Abstract Objective: To examine the skeletal, dental, and soft tissue treatment effects of retraction of maxillary anterior teeth with mini-implant anchorage in nongrowing Class II division 1 female patients. Materials and Methods: Twenty-three patients (overjet ≥7 mm) were selected on the basis of predefined selection criteria. Treatment mechanics consisted of retraction of anterior teeth by placing mini-implants in the interdental bone between the roots of the maxillary first molar and second premolar. A force of 150 g was applied, bilaterally. Treatment effects were analyzed by taking lateral cephalograms and study casts at T1 (before initiation of retraction) and at T2 (after complete space closure). Results: The upper anterior teeth showed significant retraction (5.18 ± 2.74 mm) and intrusion (1.32 ± 1.08 mm). The upper first molar also showed some distal movement and intrusion, but this was not significant (P > .05). The upper and lower lips were retracted by 2.41 mm and 2.73 mm, respectively, and the convexity angle reduced by over 2° (P < .001). Conclusion: Mini-implants provided absolute anchorage to bring about significant dental and soft tissue changes in moderate to severe Class II division 1 patients and can be considered as possible alternatives to orthognathic surgery in select cases. (Angle Orthod. 2009:79; )

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Treatment effects of “PowerScope” fixed functional appliance – a clinical study

Folia Medica ◽

10.3897/folmed.63.e52892 ◽

2021 ◽

Vol 63 (2) ◽

pp. 253-263

Author(s):

Anirudh Kalra ◽

Vinit Swami ◽

Veera Bhosale

Keyword(s):

Clinical Study ◽

Soft Tissue ◽

Class Ii ◽

Functional Appliance ◽

Lateral Cephalogram ◽

Fixed Functional Appliance ◽

Division 1 ◽

Maxillary Molar ◽

Tissue Changes ◽

Soft Tissue Changes

Aim: To study the skeletal, dental effects and evaluate the soft tissue changes with PowerScope-fixed functional appliance in class II malocclusion. Materials and methods: This clinical study was carried out where a total of 10 growing (CVMS 3 and 4) Class II Division 1 malocclusion patients, indicated for treatment with fixed functional appliance were allocated based on specific inclusion criteria. PowerScope (American Orthodontics) was used as the fixed functional appliance. Skeletal, dental and soft tissue effects of the appliance with various angular and linear parameters on a digital lateral cephalogram were evaluated for all 10 participants. Records were collected before the insertion of PowerScope appliance (T0) and after 5 months, during the appliance removal (T1). All participants were treated with 0.018ʺ×0.025ʺ MBT (3M Unitek) prescription. Statistical analysis was performed using a paired t-test to compare individual mean changes for each treatment category.  Results: Statistically significant changes were seen in skeletal parameters such as forward positioning of the mandible with an increase in SNB angle and N perpendicular-Pogonion distance, the class II jaw base relationship improved with reduction in ANB angle and Wits appraisal. Significant changes were observed in dental parameters such as forward positioning of mandibular incisors, maxillary molar distalization and intrusion with reduction in overbite and overjet respectively. In the soft tissue, a significant improvement in facial profile was seen due to an increase in labiomental angle. Conclusions: The results of this study have shown that statistically significant changes in skeletal, dental and soft tissue parameters

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