Treatment Effects of the Twin Block Functional Appliance and the Mandibular Anterior Repositioning Appliance (MARA) in Patients with Class II Malocclusions℗ PDF Download
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Author: Eva-Maria Moll
Publisher:
ISBN:
Category :
Languages : en
Pages : 69
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Book Description
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: Eva-Maria Moll
Publisher:
ISBN:
Category :
Languages : en
Pages : 69
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Book Description
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: Moschos A. Papadopoulos
Publisher: Elsevier Health Sciences
ISBN: 0723433917
Category : Medical
Languages : en
Pages : 413
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Book Description
Section I CLASS II ORTHODONTIC TREATMENT AND COMPLIANCE 1. The problem of compliance in orthodontics 2. Classification of the non-compliance appliances used for Class II correction Section II NTER-MAXILLARY APPLIANCES USED FOR THE MANAGEMENT OF CLASS II NON-COMPLIANT PATIENTS 3. Overview of the inter-maxillary non-compliance appliances 4. The Herbst appliance 5. The Cantilever Bite Jumper 6. The Ritto Appliance(R) 7. The Mandibular Protraction 8. The Mandibular Anterior Repositioning Appliance 9. Energy management: The philosophy behind fixed intermaxillary mechanics 10. The Jasper Jumper 11. The Flex Developer 12. The Eureka Spring 13. The Twin Force Bite Corrector in the correction of Class II malocclusion in adolescent patients 14. The Sabbagh Universal Spring Section III INTRA-MAXILLARY DISTALIZATION APPLIANCES USED FOR THE MANAGEMENT OF CLASS II NON-COMPLIANT PATIENTS 15. Overview of the intra-maxillary non-compliance distalization appliances 16. The Pendulum appliance 17. The Penguin Pendulum 18. Non-compliance Class II treatment with the Distal JetAldo Carano 19. The Keles Slider appliance for bilateral and unilateral maxillary molar distalization 20. The Jones Jig and modifications 21. The use of magnets for maxillary molar distalization 22. The First Class appliance 23. An effective and precise method for rapid molar derotation Section IV INTRA-MAXILLARY APPLIANCES WITH ABSOLUTE ANCHORAGE USED FOR THE MANAGEMENT OF CLASS II MALOCCLUSION 24. Overview of the intra-maxillary non-compliance appliances with absolute anchorage 25. The use of implants as absolute anchorage for Class II correction 26. The use of onplants for maxillary molar distalization Section V CLINICAL EFFICACY OF THE NON-COMPLIANCE APPLIANCES 27. Clinical efficacy of the non-compliance appliances used for Class II orthodontic correction.
Author: Martyn T. Cobourne
Publisher: Springer Nature
ISBN: 303157530X
Category :
Languages : en
Pages : 182
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Book Description
Author: Padhraig S. Fleming
Publisher: John Wiley & Sons
ISBN: 1118670574
Category : Medical
Languages : en
Pages : 169
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Book Description
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: 9781850971696
Category : Malocclusion
Languages : en
Pages : 0
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Book Description
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: Moschos A. Papadopoulos
Publisher: Elsevier Health Sciences
ISBN: 0702054291
Category : Medical
Languages : en
Pages : 416
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Book Description
The book offers a comprehensive and critical review which presents not only the principles and techniques involved in the use of skeletal anchorage techniques and devices (such as orthodontic implants, miniscrew implants and mini plates), but also the scientific evidence available regarding the use of these contemporary applications and their clinical efficacy. • Provides an introduction to the conventional and noncompliance treatment of Class II malocclusion • Provides an introduction to the use of skeletal anchorage reinforcement approaches in orthodontics • Outlines the clinical considerations required for the use of skeletal anchorage devices in orthodontics • Explains the insertion and removal procedures of orthodontic implants, miniscrew implants and mini plates • Discusses the use of orthodontic implants for the treatment of Class II malocclusion • Explains the use of mini plates and zygomatic anchorage for the treatment of Class II malocclusion • Discusses the use of mini-screw implants for the treatment of Class II malocclusion • Explains the use of skeletal anchorage reinforcement of the noncompliance devices used for the treatment of Class II malocclusion • Explores the efficiency of skeletal anchorage and its risk management
Author: Lee W. Graber
Publisher: Elsevier Health Sciences
ISBN: 0323069932
Category : Medical
Languages : en
Pages : 1106
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Book Description
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: Jeffrey C. Posnick
Publisher: Elsevier Health Sciences
ISBN: 0323791832
Category : Medical
Languages : en
Pages : 2304
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Book Description
**Selected for Doody's Core Titles® 2024 in Oral & Maxillofacial Surgery** Find the latest thinking on the evaluation and treatment of dentofacial deformities! Principles and Practice of Orthognathic Surgery, 2nd Edition covers the concepts and skills required to diagnose and correct dentofacial deformities. Featuring thousands of images, this guide addresses planning, surgical techniques, surgical complications, classic growth patterns, and presentations of dentofacial deformity including common malformations, cleft jaw, and post-traumatic deformities, as well as aesthetic considerations. Case studies and step-by-step videos help you apply concepts and achieve real-life solutions. Written by Jeffrey C. Posnick, a noted expert in facial plastic surgery, this valuable reference will take your orthognathic skills to the next level. An enhanced eBook version included with every new print purchase provides access to a complete, fully searchable version of the text, along with videos of procedures, and much more — available on a variety of devices. - More than 8,000 photos and illustrations boost your understanding of key points and surgical techniques. - Logically organized material aids your thinking prior to developing treatment plans and executing surgery. - Current surgical protocols for Oral and Maxillofacial Surgeons and Orthodontics put you at the forefront of the orthognathic surgery field. - NEW! In-depth content revision and clear artwork are added to this edition. - NEW! Virtual Surgical Planning chapter examines how VSP provides a useful tool for planning surgeries prior to entering the operating room. - NEW! 45 videos depict step-by-step approaches to essential orthognathic procedures and techniques. - NEW! Enhanced eBook version included with every new print purchase provides access to a complete, fully searchable version of the text, along with videos of procedures and much more! - NEW! More case studies are included, each demonstrating long-term results. - NEW! Up-to-date review and analysis of research literature is added.
Author: Lee W. Graber
Publisher: Elsevier Health Sciences
ISBN: 8131247163
Category : Medical
Languages : en
Pages : 1203
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Book Description
Comprehensive, cutting-edge content prepares you for today's orthodontics! Orthodontics: Current Principles and Techniques: 1st South Asia Edition provides evidence-based coverage of orthodontic diagnosis, planning strategies, and treatment protocols, including esthetics, genetics, temporary anchorage devices, aligners, technology-assisted biomechanics, and much more. From respected editors Lee Graber, Robert Vanarsdall, Katherine Vig, and Greg Huang, along with a veritable Who's Who of expert contributors, this classic reference has a concise, no-nonsense approach to treatment that makes it the go-to book for orthodontic residents and practitioners - Comprehensive coverage provides a one-stop resource for the field of orthodontics, including foundational theory and the latest on the materials and techniques used in today's practice. - Experienced, renowned editors lead a team of expert, international contributors, bringing the most authoritative clinical practice and supporting science from the best and brightest in the industry. - More than 3,400 images include a mixture of radiographs, full-color clinical photos, and anatomic or schematic line drawings, showing examples of treatment, techniques, and outcomes. - Extensive references make it easy to look up the latest in orthodontic research and evidence-based information, and all references also appear online. - Detailed, illustrated case studies show the decision-making process, showing the consequences of various treatment techniques over time
Author: Mosby
Publisher: Elsevier Health Sciences
ISBN: 0323225683
Category : Medical
Languages : en
Pages : 488
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Book Description
Get all the review and testing practice you need to pass the NBDE Part II! Providing the most up-to-date information on the biomedical and dental sciences addressed in Part II of the National Board Dental Examination (NBDE) - including Endodontics, Operative Dentistry, Oral/Maxillofacial Surgery and Pain Control, Oral Diagnosis, Orthodontics and Pediatric Dentistry, Patient Management, Periodontics, Pharmacology, and Prosthodontics - this complete exam review features an easy-to-use outline format that mirrors the topic progression of the NBDE. Plus, it's loaded with informative examples and illustrations, endless practice questions reflecting the latest question types, and customizable testing modes to ensure you are fully prepared to tackle every aspect of Part II of the NBDE! Easy-to-use outline format organizes essential data and key points in a clean, streamlined fashion. Exam-based progression of topics presents sections and topics in the same order as they appear on the actual exam. Practice exams with approximately 450 questions appear at the end of the book along with the correct answers and rationales. Approximately 400 diagrams and photographs provide visual evidence to support key biomedical and dental topics. Tables and text boxes provide supplementary information and emphasize important data from the text. NEW! Online resources on the companion Evolve website include: Database of exam questions Timed practice exams Custom test generator to mimic the NBDE II Sample cases Answers and rationales Downloadable apps NEW! Practice and testing modes for NBDE II review allow you to test yourself via category or in a testing format that allows you to create an unlimited number of unique practice tests with instant feedback. UPDATED! New test items types in practice exams include multiple correct answer, extended matching, and answer ordering question types that are found on the latest NBDE exam from the Joint Commission on National Dental Examinations (JCNDE).
