Background: Intrusion of posterior maxillary teeth using TADs or mini-plates provides an alternative to orthognathic surgery in the correction of anterior open bite malocclusion. Hypothesis: Anterior open bites can be effectively and efficiently closed orthodontically by posterior intrusion using temporary anchorage devices placed in the infrazygomatic buttress. Methods: Primary and secondary variables associated with open bite closure were measured three times on pre (T1) and post (T2) treatment lateral cephalograms of 25 patients treated for anterior open bite malocclusion with infrazygomatic TADs. Means were compared by t-test and mixed model analysis using vertical growth groupings. Results: Mean posterior molar intrusion (U6-PP) was 1.65 mm. This secondarily produced significant reductions in mandibular plane angle (SN-GoGn), overbite (OB), overjet (OJ) interincisal angle, ANB, SNB, WITS, and lower face height (LFH). Conclusion: Infrazygomatic TADs provide an acceptable treatment alternative to orthognathic surgery in the treatment of anterior open bite malocclusion by intrusion of posterior maxillary dentition.

Provides the latest information on all aspects of using temporary anchorage devices in clinical orthodontics, from diagnosis and treatment planning to appliances and applications Written by some of the world’s leading experts in orthodontics, Temporary Anchorage Devices in Clinical Orthodontics is a comprehensive, up-to-date reference that covers all aspects of temporary anchorage device (TAD) use in contemporary orthodontics. Taking a real-world approach to the subject, it covers topics ranging from diagnosis and treatment planning to the many applications and management of complications. Case studies demonstrate the concepts, and high-quality clinical photographs support the text throughout. The book begins with an overview of clinical applications and fundamental principles of TADs. It then goes on to cover biomechanical considerations for controlling target tooth movement with TADs. Biomechanical simulations for various clinical scenarios treated with TADs are addressed next, followed by an examination of histological aspects during the healing process and anatomical considerations with TADs. Other chapters cover: Class II Correction with TADs, Distalization with TADs, TAD-anchored Maxillary Protraction, Maxillary Expansion with TADs, Anterior Open Bite Correction with TADs, TAD-assisted Aligner Therapy, TADs vs. Orthognathic Surgery; Legal Considerations When Using TADs; and much more. Provides evidence-based information on the use of TADs, with a focus on improving outcomes for patients Considers topics ranging from diagnosis and treatment planning to specific clinical applications and appliances Takes a real-world clinical approach, with case studies demonstrating concepts Written by international experts in the field Presents hundreds of high-quality clinical photographs to support the text Temporary Anchorage Devices in Clinical Orthodontics is an essential resource for orthodontists and orthodontic residents.

Open-Bite Malocclusion: Treatment and Stability presents the etiology, treatment, and its stability of anterior open bite malocclusion in the early, mixed, and permanent dentitions. Special emphasis is devoted to orthodontic treatment and its stability in the permanent dentition because this is the time when treatment of open bite presents greater relapse. Appropriate for clinicians, orthodontic residents, and dental students, Open-Bite Malocclusion covers the most simple treatment approaches to the most complex, from orthodontic devices to tooth extraction to surgery. Unique to this book is the discussion of post-treatment stability. Drs. Janson and Valarelli highlight the post-treatment changes and presents strategies to increase treatment stability. This allows the clinician to be able to predict the stability probabilities when treating anterior open bite malocclusions in the permanent dentition either with or without extraction, orthodontic-surgical therapy, or with occlusal adjustment.

Introduction: Although there appears to be mounting evidence of benefits that TADs may offer in treatment of anterior open bite (AOB), there remains a lack of studies comparing outcomes and stability in patients treated with and without skeletal anchorage in growing versus non-growing individuals. The purpose of this study is to compare outcomes of AOB treatment with fixed appliances only (non-TADs) to treatment with fixed appliances in conjunction with TADs. Effects of growth and open-bite severity on treatment success and stability are explored. Methods: Pre- (T1) and post-treatment (T2) lateral cephalographs were compared for 68 TAD and 42 non-TAD AOB patients using a custom analysis. T1 and T2 intraoral photographs were also scored using the Photographic Open-bite Severity Index (POSI). One-year retention (T3) photographs were measured for 58 of these patients, also using the POSI scale. Multiple linear and logistic regression models were utilized to explore effects of growth, pre-treatment severity, and location of TAD placement on treatment success and stability. Results: Treatment success rates were similar between TAD (83.8%) and non-TAD (88.1%) AOB patients. Growth during treatment did not demonstrate a significant influence on treatment success (OB > 0). Growing and non-growing patients treated with TADs tended to show greater changes in cephalometric measurements than their non-TAD counterparts, particularly in change in lower face height, anterior face height, and maxillary molar vertical height. Patients with TADs in both arches tended to exhibit even more noticeable skeletal and facial changes, with reduced extrusion of incisors. Stability rates were higher for TAD patients (80.0%) compared to non-TAD patients (57.1%), and higher for non-growers (83.3%) compared to growers (50.0%), though these findings were not statistically significant. Conclusion: The success rates for patients treated orthodontically for anterior open bite in this study were high. The research suggests that beneficial vertical changes can be obtained with the use of skeletal anchorage for molar intrusion in open bite patients, particularly when it is utilized in both upper and lower arches. Open bite patients with growth potential may also benefit from the use of TADs during treatment, as it appears to limit the vertical growth pattern normally expected. Practitioners should be aware of the relapse potential in open bite patients, especially in growing patients.

Provides the latest information on all aspects of using temporary anchorage devices in clinical orthodontics, from diagnosis and treatment planning to appliances and applications Written by some of the world’s leading experts in orthodontics, Temporary Anchorage Devices in Clinical Orthodontics is a comprehensive, up-to-date reference that covers all aspects of temporary anchorage device (TAD) use in contemporary orthodontics. Taking a real-world approach to the subject, it covers topics ranging from diagnosis and treatment planning to the many applications and management of complications. Case studies demonstrate the concepts, and high-quality clinical photographs support the text throughout. The book begins with an overview of clinical applications and fundamental principles of TADs. It then goes on to cover biomechanical considerations for controlling target tooth movement with TADs. Biomechanical simulations for various clinical scenarios treated with TADs are addressed next, followed by an examination of histological aspects during the healing process and anatomical considerations with TADs. Other chapters cover: Class II Correction with TADs, Distalization with TADs, TAD-anchored Maxillary Protraction, Maxillary Expansion with TADs, Anterior Open Bite Correction with TADs, TAD-assisted Aligner Therapy, TADs vs. Orthognathic Surgery; Legal Considerations When Using TADs; and much more. Provides evidence-based information on the use of TADs, with a focus on improving outcomes for patients Considers topics ranging from diagnosis and treatment planning to specific clinical applications and appliances Takes a real-world clinical approach, with case studies demonstrating concepts Written by international experts in the field Presents hundreds of high-quality clinical photographs to support the text Temporary Anchorage Devices in Clinical Orthodontics is an essential resource for orthodontists and orthodontic residents.

Providing an introduction to current thinking and practice in orthodontics, this text covers all aspects of the field, including clinical practice and treatment planning.