scholarly journals Infra-Zygomatic Mini Screws Compared to High Pull Headgear for Distalization And Intrusion of Maxillary Molars in Growing Patients with Class II Malocclusion: A Randomized Clinical Trial

2021 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
Ahmed K. Afify ◽  
Amr E. El-Dakroury ◽  
Sherif A. El-Kordy ◽  
Mostafa M. El-Dawlatly
Keyword(s):  
Clinical Trial ◽  
Clinical Study ◽  
Treatment Duration ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Maxillary Molars ◽  
Randomized Clinical Study ◽  
Molar Intrusion ◽  
Before And After ◽  
Patient Cooperation

Objective: The aim of the present randomized clinical study was to evaluate the distalization and intrusion effect of an Infra-zygomatic mini-screws supported appliance and compare it with high pull headgear appliance in treatment of growing patients with class II malocclusion. Methodology: 22 growing boys aged between (10 to 12 years) with class II div 1 malocclusion randomly divided to 2 equal groups. The first group treated with high pull headgear with acrylic splint and the second one treated with an Infra-zygomatic mini-screws supported appliance. The treatment duration was 8 months for both groups. Lateral cephalometric radiographs were taken before and after the treatment for each patient to be analyzed. Results: The maxillary first molar distalization was 2.58±2.31 mm in head gear group and 1.53±2.83 mm in mini-screws group. There was no significant maxillary first molar intrusion in both groups. There were no significant differences between the two groups. Conclusions: the mini-screws supported appliance can be used as the fixed replacement of the removable high pull headgear appliance with no need for patient cooperation.

scholarly journals Comprehensive approach to simultaneous molar intrusion and canine retraction in the treatment of Class II anterior open bite using miniscrew anchorage

2020 ◽  
Vol 25 (3) ◽  
Author(s):  
Kaori Shirasaki ◽  
Yoshihito Ishihara ◽  
Hiroki Komori ◽  
Takashi Yamashiro ◽  
Hiroshi Kamioka
Keyword(s):  
Treatment Duration ◽  
Class Ii ◽  
Open Bite ◽  
Prolonged Treatment ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Canine Retraction ◽  
Maxillary Molars ◽  
Anterior Teeth ◽  
Molar Intrusion

ABSTRACT Introduction: Anterior open bite is one of the most difficult malocclusions to correct in orthodontic treatment. Molar intrusion using miniscrew anchorage has been developed as a new strategy for open bite correction; however, this procedure still has an important concern about prolonged treatment duration in the patient with anteroposterior discrepancy due to the separate step-by-step movement of anterior and posterior teeth. Objective: This article illustrates a comprehensive orthodontic approach for dentoalveolar open bite correction of an adult patient, by using miniscrew. Case report: A woman 19 years and 5 months of age had chief complaints of difficulty chewing with the anterior teeth and maxillary incisor protrusion. An open bite of -2.0 mm caused by slight elongation of the maxillary molars was found. The patient was diagnosed with Angle Class II malocclusion with anterior open bite due to the vertical elongation of maxillary molars. After extraction of the maxillary first premolars, concurrent movements of molar intrusion and canine retraction were initiated with the combined use of sectional archwires, elastic chains and miniscrews. Results: At 4 months after the procedure, positive overbite was achieved subsequent to the intrusion of maxillary molars by 1.5 mm and without undesirable side effects. Class I canine relation was also achieved at the same time. The total active treatment period was 21 months. The resultant occlusion and satisfactory facial profile were maintained after 54 months of retention. Conclusion: The presented treatment shows the potential to shorten the treatment duration and to contribute to the long-term stability for open bite correction.

scholarly journals Dentoskeletal Class II Malocclusion: Maxillary Molar Distalization with No-Compliance Fixed Orthodontic Equipment

2020 ◽  
Vol 8 (1) ◽  
pp. 26
Author(s):  
Vincenzo Quinzi ◽  
Enrico Marchetti ◽  
Luigi Guerriero ◽  
Floriana Bosco ◽  
Giuseppe Marzo ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Final Analysis ◽  
Class Ii ◽  
Dental Arch ◽  
Class Ii Malocclusion ◽  
Exclusion Criteria ◽  
Molar Distalization ◽  
Maxillary Molars ◽  
Maxillary Molar ◽  
Orthodontic Devices

Dentoskeletal class II malocclusion due to a protruded upper dental arch is a major reason for an orthodontic treatment. In these cases, the correction of class II can be hindered by molar distalization, obtained with ‘no-compliance therapy’ that involves the use of appliances which minimize the need for such co-operation and attempt to maximize the predictability of results. The aim of this review was to outline the effectiveness of no-compliance fixed orthodontic devices in the molar distalization. After selection according to the inclusion/exclusion criteria, 16 articles from 2000 to 2019 were qualified for the final analysis. The literature shows various no-compliance fixed devices whose effect is to distalize the maxillary molars. The present revision allows to conclude that there is a need to increase the number of studies, especially with regard to the most recently introduced devices in the literature. The analysed studies allow to hypothesize that these appliances act with a minimal variability of molar distalization and disto-inclination among them, although different effects among the appliances can be observed as regards to the anchorage.

scholarly journals Adequacy of molar distalization after second and third molar eruption- a case report

2018 ◽  
Vol 6 (2) ◽  
pp. 50
Author(s):  
Sarath Babu Balina ◽  
Durga Harsha G V ◽  
Padmapriya C V ◽  
Varma DPK ◽  
Goutham C V
Keyword(s):  
Third Molar ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Average Growth ◽  
Mini Implants ◽  
Maxillary Molars ◽  
Extraction Therapy ◽  
Patient Reported ◽  
Maxilla And Mandible ◽  
Third Molar Eruption

Adult patients with class II malocclusion can be treated routinely by extraction therapy. In the recent decades there was increasing popularity towards non-extraction treatment. Distalization of maxillary molars is one of the prime treatment modality to correct mild to moderate class II malocclusion cases with esthetically acceptable profile. A 16 years old female patient reported with irregularly placed upper front teeth and was diagnosed as Angle’s Class II malocclusion with orthognathic maxilla and mandible, average growth pattern. Treatment was planned to distalize the entire maxillary arch using mini implants as skeletal anchorage. 4.0 mm of maxillary molars were distalized, class I molar and canine relation were achieved bilaterally within span of 10 months without altering the patient’s existing profile.  

scholarly journals Frankel 2 appliance versus the Modified Twin Block appliance for Phase 1 treatment of Class II division 1 malocclusion in children and adolescents: A randomized clinical trial

2019 ◽  
Vol 90 (2) ◽  
pp. 202-208 ◽  
Author(s):  
Ciara Campbell ◽  
Declan Millett ◽  
Niamh Kelly ◽  
Marie Cooke ◽  
Michael Cronin
Keyword(s):  
Clinical Trial ◽  
Children And Adolescents ◽  
Randomized Clinical Trial ◽  
Treatment Duration ◽  
Phase 1 ◽  
Class Ii ◽  
Parent Perspectives ◽  
Twin Block ◽  
Division 1 ◽  
Class Ii Division 1

ABSTRACT Objective: To compare Phase 1 treatment, using the Frankel 2 (FR2) or the modified Twin Block (MTB), for Class II division 1 malocclusion in children and adolescents with respect to: treatment duration, number of appliance breakages, occlusal outcome, and patient and parent perspectives. Materials and Methods: Sixty participants with a Class II division 1 malocclusion were randomly assigned to either the FR2 or MTB appliance in a two-armed parallel randomized clinical trial with an allocation ratio of 1 to 1. Time to achieve a Class I incisor relationship was the primary outcome. The number of appliance breakages was recorded. The Peer Assessment Rating (PAR) index was used to evaluate pre- and post-treatment occlusal outcome on study models. Participants completed the child OHRQoL (oral health-related quality of life), Piers-Harris, Standard Continuum of Aesthetic Need (SCAN), and Oral Aesthetic Subjective Impact Score (OASIS) questionnaires pre- and post-treatment; parents completed a SCAN questionnaire. Results: Forty-two participants completed treatment (FR2: 20; MTB: 22). Multiple imputation was used to impute missing data for noncompleters. Mean treatment duration was similar for the two appliances (FR2: 376 days [SD 101]; MTB: 340 days [SD 102]; P = .41). There were no significant differences in mean number of appliance breakages (FR2: 0.3 SD 0.7; MTB: 0.4 SD 0.8; P = .67 or mean PAR score P = .48). Patient and parent perspectives did not differ between appliances (P > .05). Conclusions: Phase 1 treatment duration, number of appliance breakages, occlusal outcome, and patient and parent perspectives were similar in 11–14 year olds with Class II division 1 malocclusion treated using the FR2 or MTB appliance.

Bioreconstructive Poly-L/D-Lactide Implant Compared With Swanson Prosthesis in Metacarpophalangeal Joint Arthroplasty in Rheumatoid Patients: a Randomized Clinical Trial

2010 ◽  
Vol 35 (9) ◽  
pp. 746-753 ◽  
Author(s):  
P.B. Honkanen ◽  
R. Thonen ◽  
E.T. Skyttä ◽  
M. Ikävalko ◽  
M.U.K. Lehto ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Clinical Study ◽  
Randomized Clinical Trial ◽  
Joint Destruction ◽  
Metacarpophalangeal Joint ◽  
Joint Arthroplasty ◽  
Silicone Implant ◽  
Clinical Assessments ◽  
Randomized Clinical Study

It was hypothesized that the bioresorbable interposition implant might offer a viable alternative to conventional silicone implant arthroplasty in rheumatoid metacarpophalangeal joint destruction. A randomized clinical study was performed to compare a stemless poly-L/D-lactide copolymer 96: 4 (PLDLA) implant with the Swanson silicone implant. Results in 52 patients (53 hands and 175 joints) at a mean follow-up of 2 years (minimum 1 year) showed that the improvement in clinical assessments was comparable in both groups, except for better maintenance of palmar alignment in the Swanson group. The lack of implant fractures and intramedullary osteolysis were advantages of the PLDLA implant. The bioresorbable PLDLA interposition implant may offer an alternative tool for tailored reconstruction of rheumatoid metacarpophalangeal joints.

scholarly journals Effective and Efficient Correction of Severe Skeletal Class II Division 1 Malocclusion with Intermaxillary Elastics

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Mohammed K. Badri
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Division 1 ◽  
The Status ◽  
Patient Cooperation ◽  
Growth Modification ◽  
Class Ii Elastics ◽  
Class Ii Division 1

Treatment of Class II malocclusion accompanied with a skeletal discrepancy is challenging. The approach of correction depends on several factors such as the status and pattern of growth, severity of the malocclusion, and patient cooperation. This case report describes a successful management of a 12-year-old young adolescent boy that was presented with a Class II division 1 malocclusion with an underlying skeletal discrepancy in horizontal and vertical dimensions. Growth modification was achieved by means of bite opening and unlocking the mandible together with Class II elastics and mechanics. Treatment was highly effective and efficient by achieving all treatment goals within a period of 18 months.

scholarly journals The possibilities of computer simulation of the orthognatic surgical procedure in the treatment of class II malocclusion

2008 ◽  
Vol 55 (3) ◽  
pp. 147-153
Author(s):  
Jovana Milutinovic ◽  
Nenad Nedeljkovic ◽  
Predrag Nikolic
Keyword(s):  
Surgical Treatment ◽  
Computer Software ◽  
Class Ii ◽  
Second Step ◽  
Class Ii Malocclusion ◽  
Tissue Analysis ◽  
Computer Aided ◽  
Before And After ◽  
The Difference ◽  
School Of Dentistry

Aim: The aim of this study was to investigate the possibilities for computer-aided orthognathic surgery in the treatment of class II malocclusions. Materials and methods: Twelve patients treated at the Dept. of Orthodontics, School of Dentistry, Belgrade, were included in the study. Profile cephalometric analyses of all patients were conducted before and after the treatment. The first step was the profile cephalometric analysis before the treatment using the computer software Nemotec dental studio NX2005 and the second step was the computer-aided simulation using the same software. Results: The difference in the results was found in the soft-tissue analysis, which can be explained by the possibility of observing the instant changes in patients' profiles during the simulation of surgical treatment. Conclusion: Based on the results of the present study, it can be concluded that the computer-aided simulation provides a faster approach, a possibility to educate patients before the surgical treatment and a better clinician-patient communication.

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