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Download or read book A Cephalometric Appraisal of the Treatment Effects of Twin Block Functional-orthopaedic Appliance System written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eva-Maria Moll
Publisher :
ISBN 13 :
Total Pages : 69 pages
Book Rating : 4.:/5 (829 download)
Download or read book Treatment Effects of the Twin Block Functional Appliance and the Mandibular Anterior Repositioning Appliance (MARA) in Patients with Class II Malocclusions℗ written by Eva-Maria Moll and published by . This book was released on 2012 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: AbstractIntroduction: Class II malocclusions represent one of the most prevalent forms of malocclusion encountered in routine orthodontic practice. In order to correct a Class II malocclusion, miscellaneous orthopedic functional appliances with a broad spectrum of diverse appliance designs have been continuously developed. While the Twin Block is known as one of the best researched functional appliances, only few studies have evaluated the treatment efficacy of the Mandibular Anterior Repositioning Appliance (MARA) since its development in 1991. Thus, the purpose of this retrospective study was to evaluate and compare the skeletal and dentoalveolar effects of the Twin-block and the Mandibular Anterior Repositioning Appliance (MARA) in the treatment of adolescent patients with Class II malocclusions compared to controls. Materials and Methods: The present retrospective study was carried out on three samples: a Twin Block sample, a MARA sample, and a control sample.^The study was based on the evaluation of the lateral cephalometric radiographs of a total of 96 cases at T1 (pre-functional treatment), as well as at T2 (post-functional treatment/ equivalent timeframe in controls). The Twin Block sample with 37 cases represented the largest sample, consisting of 24 females and 13 males. It was treated by the inventor Dr. Clark in his private practice in Fife, Scotland, UK. The average age for the Twin Block group at T1 is 11 years of age. The MARA group consisted of a total of 34 cases: 16 females and 18 males. The average age of the MARA sample at T1 was consistent with the Twin Block sample (11 years of age). The MARA sample was respectively treated by its inventor Dr. Toll, Bad Soden, Germany. The control group was based on 25 cases (12 female and 13 male) obtained from the Michigan growth study. The untreated control group was matched to the MARA sample.^Lateral cephalometric radiographs were taken at the beginning of treatment (T1) and post-functional treatment (T2). Cephalometric changes were evaluated using the Clark analysis including 27 measurements. The MARA, and the control sample were evaluated by an independent commercial company, Rocky Mountain Data Systems, using Joe Ceph by Rocky Mountain Orthodontics. The Twin-Block sample was analyzed by Dr. Clark using Quick CephTM. Results: The results showed that sagittal correction of Class II appeared to be mainly achieved by dental changes, being accompanied by skeletal adaptation. A positive influence of the position of point Pogonion could be achieved in both groups resulting in a considerable decrease of the facial convexity. Skeletal alterations that contributed to skeletal adapations mainly took place in the mandibular ramus, while these changes were significant different form the controls.^No significant alteration of the mandibular plane angle could be determined in all three groups. The current study showed a lower incisors flaring of 5. 47 degree with the MARA appliance and 2. 11 degree with the Twin Block. The effects on the upper incisors varied between the two functional appliances. Slight protrusion of the upper incisors took place with the MARA (+5. 06 degree) and a significant retroclination occurred with the Twin Block ( -12. 42 degree). Accordingly, the interincisal angle decreased in the Twin Block sample and increased on the other hand with the MARA. No significant change of the incisor position of the controls was present. Incisor overjet decreased of about 7. 03 mm in the Twin Block group and 2. 46 mm in the MARA sample. Incisor overbite decreased about 1. 34 mm with the Twin Block and 2. 92 mm with the MARA. Molar relation was corrected in both functional groups resulting in a Class I relation, while no change appeared in the control sample.^While a slight distalizing effect on the upper first molars could be seen in the Twin Block sample ( -0. 06 mm), no such effect could be determined for the MARA appliance (+0. 96 mm). Conclusion: Both appliances resulted in a Class I relationship. Skeletal changes were very similar in both appliances. Overall the Twin Block seemed to be slightly superior to the MARA appliance. Key words: Fixed functional appliance; Twin Block; MARA; Class II malocclusion; Clark analysis.
Author : William Clark
Publisher : JP Medical Ltd
ISBN 13 : 9351523144
Total Pages : 580 pages
Book Rating : 4.3/5 (515 download)
Download or read book Twin Block Functional Therapy written by William Clark and published by JP Medical Ltd. This book was released on 2014-09-30 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twin Block appliances are simple bite blocks that are designed for full-time wear. They achieve rapid functional correction of malocclusion (misalignment of upper and lower teeth) by the transmission of favourable occlusal forces to occlusal inclined planes that cover the posterior teeth. The forces of occlusion are used as the functional mechanism to correct the malocclusion (www.twinblocks.com). Beginning with an introduction to orthodontics and twin blocks, the next chapters describe growth studies and diagnosis and treatment planning. Each of the following sections discusses the use of twin blocks for different types of malocclusion. With a focus on the latest developments in functional therapy, the book offers guidance on diagnosis, treatment planning, case selection, appliance design and clinical management. Written by the internationally recognised Orthodontist William Clark from Fife, UK, who also invented Twin Blocks, this comprehensive guide includes nearly 600 clinical photographs and illustrations. Key points Comprehensive guide to use of Twin Blocks in treatment of malocclusion Focus on latest developments in functional therapy Written by UK-based inventor of Twin Blocks Includes nearly 600 images and illustrations
Author : Paul H. Ling
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.:/5 (223 download)
Download or read book Orthopaedic and Orthodontic Treatment Effects Using the Clark Twin Block Functional Appliance written by Paul H. Ling and published by . This book was released on 1998 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines dental and skeletal changes of Class II division I patients treated with the Clark Twin Block functional appliance.
Author : Padhraig S. Fleming
Publisher : John Wiley & Sons
ISBN 13 : 111867054X
Total Pages : 176 pages
Book Rating : 4.1/5 (186 download)
Download or read book Orthodontic Functional Appliances written by Padhraig S. Fleming and published by John Wiley & Sons. This book was released on 2016-04-19 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive specialist manual covering the science and practice of functional appliance therapy Integrates clinical and academic elements with emphasis on evidence-based research and its clinical application Suitable for trainee and practicing orthodontists Includes more than 600 photographs to enhance clarity of topics covered Features contributions from top clinicians and researchers in the field
Author : Hans Pancherz
Publisher : Quintessence Publishing (IL)
ISBN 13 : 9781850971696
Total Pages : 0 pages
Book Rating : 4.9/5 (716 download)
Download or read book The Herbst Appliance written by Hans Pancherz and published by Quintessence Publishing (IL). This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a research-based book on the clinical use of the Herbst appliance in the management of Class 2 malocclusions. Different clinical problems and questions are addressed in the light of the corresponding research existing. Thus, in contrast to other Class 2 alternative treatments, the Herbst appliance approach is based on scientific research.
Author : Abbie Schaefer Horky
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Cephalometric Comparison of Two Phase Treatment with the Twin Block and Stainless Steel Crown Herbst Appliances written by Abbie Schaefer Horky and published by . This book was released on 2002 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lee W. Graber
Publisher : Elsevier Health Sciences
ISBN 13 : 0323069932
Total Pages : 1106 pages
Book Rating : 4.3/5 (23 download)
Download or read book Orthodontics - E-Book written by Lee W. Graber and published by Elsevier Health Sciences. This book was released on 2011-06-16 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt: A leading orthodontics reference, Orthodontics: Current Principles and Techniques, 5th Edition provides the latest information from the best experts in the field. It reflects today's emerging techniques, including new information on esthetics, genetics, cone-beam and other three-dimensional technologies, and evidence-based treatment. Coverage of diagnosis and treatment ranges from basic to highly complex situations, all in a concise, extensively illustrated format. Also included with this edition is a companion website that includes an electronic version of all chapters, supplemental content in select chapters, and a complete image collection to help with research and presentations. Written by Lee W. Graber, Robert L. Vanarsdall Jr., and Katherine W. L. Vig, along with a team of expert contributors, this is your go-to book for the practical orthodontic information you can use every day. Comprehensive coverage includes foundational theory and the latest on materials and techniques used in today's practice. Full-color photographs make it easy to see and distinguish the subtle differences that are necessary to mastering treatment planning. More than 2,500 images include a mixture of radiographs, clinical photos, and anatomic or schematic line drawings, showing examples of treatments, techniques, and outcomes. Detailed case studies guide you through the decision-making process, showing the consequences of various treatment techniques over time. Extensive references cite the latest in orthodontic research, so it's easy to follow up on evidence-based information. Authoritative research is provided by a team of three experienced, renowned authors/editors along with a team of worldwide experts. Cutting-edge content includes the latest concepts and techniques in orthodontics, including new coverage of temporary anchorage devices, self-ligating bracket biomechanics, clear aligner treatments, technological advances in imaging, and lasers. Improved organization separates topics into six parts and 29 chapters, enhancing both learning and research. Chapter outlines serve as a handy reference tool for practitioners and researchers. New lead author Dr. Lee Graber adds a fresh perspective to the experience of authors Drs. Robert Vanarsdall Jr., and Katherine W. L. Vig. Access to a companion website includes an electronic version of all chapters, plus case studies, a complete image collection, and supplemental content.
Author : Abdulfatah Hanoun
Publisher :
ISBN 13 :
Total Pages : 91 pages
Book Rating : 4.:/5 (874 download)
Download or read book Treatment Effects of the Forsus Fatigue Resistance Device and Twin Block Appliance in Patients with Class II Malocclusions written by Abdulfatah Hanoun and published by . This book was released on 2013 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Class II malocclusions are of interest to the practicing orthodontists because they constitute a significant percentage of the cases they treat. Over the years, a substantial number of approaches and appliances had been developed for Class II malocclusion treatment. The concept of fixed functional appliance such as Forsus appliance was suggested as an option to overcome the lack of compliance with some patients. Many studies were published about Twin Block but only few studies have evaluated the treatment effects of the Forsus Appliance. Objectives: This study will evaluate the effects of the Forsus appliance in comparison with Twin Block appliance and a non-treated control group for the treatment of Class II malocclusion. Methods: The present retrospective study was carried out on three groups: Twin Block group (37 subjects, mean age 11. 2 Y), Forsus group (30 subjects, mean age 12. 9 Y), and a non-treated control group (25 subjects, mean age 12. 6 Y). The study was based on the evaluation of the lateral cephalometric radiographs of pre-treatment, as well as at T2 (posts appliance removal/ equivalent timeframe in controls. Cephalometric changes were evaluated using the Clark analysis including 27 measurements. Results: The results showed that sagittal correction of Class II appeared to be mainly achieved by dentoalveolar change changes only in Forsus group. The Twin Block appliance therapy was able to induce both skeletal and dentoalveolar changes. A favourable influence on the facial convexity could be achieved in both groups. In the Twin Block group, skeletal alterations that contributed to skeletal correction mainly took place in the mandibular ramus, while these changes were significant different form the controls. The effects on the upper incisors varied between the two functional appliances. Large significant upper incisors retroclination occurred with the Twin Block ( -12. 42 degree) while - 4℗ʻ only observed in Forsus group. The lower incisors were proclined slightly more in Forsus than Twin Block group. No significant change of the incisor position of the controls was present. Incisor overjet reduction was larger in amount in Twin Block (7. 03 mm) and 4 mm in the Forsus group. The overjet correction was about 60% of the initial overjet in both experimental groups. Molar relation was corrected in both functional groups resulting in a Class I relation, while no change appeared in the control sample.
Author :
Publisher : Brindusa Covaci
ISBN 13 : 3950314571
Total Pages : 269 pages
Book Rating : 4.9/5 (53 download)
Download or read book The International Conference Education and Creativity for a Knowledge based Society – Medine and Dental Medicine, 2012 written by and published by Brindusa Covaci. This book was released on with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rohan Kirtane
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Cephalometric Evaluation of Skeletal and Dentoalveolar Effects of Twin-Block Appliance and Van Beek Headgear-activator (vBHGA) in the Correction of Class II Malocclusion written by Rohan Kirtane and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: To evaluate the cephalometric skeletal and dentoalveolar short-term effects of Twin Block (TB) and van Beek Headgear Activator (vBHGA) appliances, in the correction of skeletal Class II malocclusion (ANB≥5) in growing patients as determined by the CVM method, in comparison with a growing untreated control. Materials and Methods: Pre (T1) and post-functional appliance (T2) lateral cephalograms were retrospectively obtained for the vBHGA (n=46), TB (n=45), and control (n=45) groups. The groups were also stratified into horizontal or vertical using Jarabak ratio values. A customized cephalometric analysis and superimposition-based measurements were performed. Analysis of Covariance (ANCOVA) regression models at the 5% level of significance were used. Results: Both appliances equally improved the jaw relationship. For vBHGA, they were: ANB (1.590; p=0.00) and Harvold Difference (2.51mm; p
Download or read book The Twin Block Appliance, a Cephalometric Analysis of Vertical Control written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1860 pages
Book Rating : 4.:/5 (319 download)
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1999 with total page 1860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter M. G. O'Brien
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (222 download)
Download or read book A Comparison of the Treatment Effects of the Medium Opening Activator and Clark Twin Block Appliances written by Peter M. G. O'Brien and published by . This book was released on 1997 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William T. Mahon
Publisher :
ISBN 13 :
Total Pages : 141 pages
Book Rating : 4.:/5 (269 download)
Download or read book A Cephalometric Appraisal of Class II Functional Appliance Therapy written by William T. Mahon and published by . This book was released on 1982 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Martyn T. Cobourne
Publisher : Springer Nature
ISBN 13 : 303157530X
Total Pages : 182 pages
Book Rating : 4.0/5 (315 download)
Download or read book Orthodontic Management of Class II Malocclusion written by Martyn T. Cobourne and published by Springer Nature. This book was released on with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (244 download)
Download or read book Cephalometric Changes Observed Following Long Term Use of the Bimler Functional Appliance in Class II Division 1 Malocclusions written by and published by . This book was released on 2008 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bimler appliance is one of many functional appliances developed during the evolution of functional orthodontics and is still used to treat patients today. Dr. Bimler was a firm believer that functional appliances should treat the patient to their individual limits of adaptability, and treating beyond this adaptability was an invitation for future relapse. The goal of this study was to evaluate cephalometric changes observed in Class II division 1 patients who received long-term therapy utilizing the Bimler appliance. Twenty-five patients (15 females and 10 males) for inclusion in this study were drawn from records donated to the University at Buffalo School of Dental Medicine from the practice of the late HP Bimler in Wiesbaden, Germany. All patients showed Class II division 1 malocclusions at the start of treatment, were treated solely using the Bimler appliance for an extended treatment period, and had initial, progress, and final cephalometric radiographs available. Each radiograph was digitized and traced by a single operator utilizing the Dolphin Imaging System, and a cephalometric analysis was completed. From the results, it would appear that saggital correction in Class II division 1 cases was achieved mainly via dental changes, with only a minor contribution by changes in skeletal relationships. Treatment effects of the Bimler appliance showed statistically significant changes from baseline (P0.05) for all measures except FMA, interincisal angle, and Wits. The decrease in overjet was achieved both by a significant uprighting of the maxillary incisors ( -6.04) and flaring (proclination) of the lower incisors (4.956) over the entire treatment period. Significantly larger effects were seen during the initial treatment period (T1-T2) compared to the later treatment period (T2-T3) for ANB, ANS-Me, U1-SN, and L1-MP (p0.05). These measures accounted for most of the treatment effect of the appliance that could not be attributed to normal growth alone. Results from this study suggests that clinicians who utilize the Bimler appliance to treat Class II division 1 cases should expect to see a majority of the correction during the first 24 months of treatment, and should expect diminished treatment effects should the therapy continue significantly beyond that point.
