Treatment Outcomes and Stability in Extraction Vs. Non-extraction Adult Anterior Open Bite Patients PDF Download
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Author: Jessica L. Collins Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Anterior open bite (AOB) correction is difficult to achieve and more difficult to maintain. Some orthodontists utilize extractions to assist in bite closure. This study aims to explore whether extractions in adult patients with AOB lead to improved treatment outcomes and better long-term stability. The pre- and post-treatment records of adult orthodontic patients with AOB were previously obtained through the National Dental Practice-Based Research Network (National Dental PBRN) as part of a larger study. These patients were treated with fixed appliances only. The total sample was divided into extraction and non-extraction groups. Frontal intraoral photographs were obtained at a long-term follow up timepoint for some of the patients. The Photographic Openbite Severity Index (POSI) was used to assess treatment success and stability. Skeletal, dental and soft tissue treatment outcomes were evaluated using cephalometric analysis. Pre- and post-treatment records were collected for 115 patients. Among this sample, 33 patients were treated with extractions and 82 were treated without extractions. Pre-treatment differences included a younger extraction group with more crowding and less history of previous orthodontic treatment. Orthodontists had similar success in achieving positive overbite of both central incisors when treating with (97%) or without extractions (92%). No clinically significant differences in skeletal outcomes were observed. The extraction group exhibited more lingual tipping and posterior movement of maxillary and mandibular incisors and less extrusion of mandibular incisors. These dental changes were paired with increased nasolabial angle and lip retraction. The sample size at the long term follow up was not sufficient to draw a significant conclusion regarding stability. In these adult patients, the rate of successful open bite closure was similar, with or without extractions. The extraction group displayed more retraction and lingual tipping of incisors, as well as increased retraction of soft tissues. Based on a limited sample, all patients in the extraction group had a stable result while 90% of patients in the non-extraction group maintained successful AOB correction at a one-year follow up.
Author: Jessica L. Collins Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Anterior open bite (AOB) correction is difficult to achieve and more difficult to maintain. Some orthodontists utilize extractions to assist in bite closure. This study aims to explore whether extractions in adult patients with AOB lead to improved treatment outcomes and better long-term stability. The pre- and post-treatment records of adult orthodontic patients with AOB were previously obtained through the National Dental Practice-Based Research Network (National Dental PBRN) as part of a larger study. These patients were treated with fixed appliances only. The total sample was divided into extraction and non-extraction groups. Frontal intraoral photographs were obtained at a long-term follow up timepoint for some of the patients. The Photographic Openbite Severity Index (POSI) was used to assess treatment success and stability. Skeletal, dental and soft tissue treatment outcomes were evaluated using cephalometric analysis. Pre- and post-treatment records were collected for 115 patients. Among this sample, 33 patients were treated with extractions and 82 were treated without extractions. Pre-treatment differences included a younger extraction group with more crowding and less history of previous orthodontic treatment. Orthodontists had similar success in achieving positive overbite of both central incisors when treating with (97%) or without extractions (92%). No clinically significant differences in skeletal outcomes were observed. The extraction group exhibited more lingual tipping and posterior movement of maxillary and mandibular incisors and less extrusion of mandibular incisors. These dental changes were paired with increased nasolabial angle and lip retraction. The sample size at the long term follow up was not sufficient to draw a significant conclusion regarding stability. In these adult patients, the rate of successful open bite closure was similar, with or without extractions. The extraction group displayed more retraction and lingual tipping of incisors, as well as increased retraction of soft tissues. Based on a limited sample, all patients in the extraction group had a stable result while 90% of patients in the non-extraction group maintained successful AOB correction at a one-year follow up.
Author: Guilherme Janson Publisher: John Wiley & Sons ISBN: 1118336003 Category : Medical Languages : en Pages : 446
Book Description
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.
Author: David Gu Publisher: ISBN: Category : Languages : en Pages : 36
Book Description
Introduction: Anterior openbite (AOB) malocclusion is challenging for practitioners to both treat and maintain treatment outcomes. There are many orthodontic treatment and retention modalities used to treat AOB patients, but there is no consensus on which modalities are most successful or stable. This study aims to investigate the overall stability of AOB orthodontic treatment approximately one year after treatment in an adult population distributed across the United States, as well as factors that influence treatment stability. Factors that are associated with patients' satisfaction with treatment are also described. Methods: Practitioners and their adult AOB patients were recruited through the National Dental Practice-Based Research Network. Patient dentofacial and demographic characteristics, practitioner demographic and practice characteristics, and factors relating to orthodontic treatment have been reported previously. Treatment stability was determined from end-of-treatment and post-treatment intraoral photographs. Patient satisfaction was determined from end-of-treatment and post-treatment questionnaires using five-point Likert-type scales and open-ended responses. Treatment was categorized into four main groups: aligners, fixed appliances, temporary anchorage devices (TADs), and orthognathic surgery. The effect of extraction of teeth on treatment outcomes was also investigated. Retention type was categorized into Essix-style, Hawley-style, or bonded retainers and regimens were classified as full-time or part-time wear. Results: Retention data were collected from 112 patients who had been in retention for at least 9 months since the end of active treatment. The mean post-treatment time was 1.21 years (SD= 0.34 years). There were no statistically significant differences in stability between treatment groups. Overall 89% of patients maintained positive overbite (as measured on the right central incisors) and 65% maintained overlap of all incisors. Extractions exhibited a trend to be associated with higher stability. High satisfaction was reported by patients at one-year post-treatment. There were no significant differences in stability or satisfaction between retention types or regimens. Conclusion: The stability of orthodontic treatment in adult AOB patients who participated in this study was high, regardless of treatment modality. Stability tended to be higher for patients who had extractions than those who did not. Additionally, the satisfaction in adult AOB patients was also high, regardless of retention type and regimen.
Author: Jason C. Johnson Publisher: ISBN: Category : Languages : en Pages : 47
Book Description
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.
Author: Jae Hyun Park Publisher: John Wiley & Sons ISBN: 1119513472 Category : Medical Languages : en Pages : 816
Book Description
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.
Author: Ravindra Nanda Publisher: Saunders ISBN: Category : Medical Languages : en Pages : 408
Book Description
This text provides state-of-the-art reference on the successful application of biomechanics in clinical orthodontics. It features comprehensive guidance on basic biomechanic principles to orthodontic problem resolution by focusing on the fundamentals, and shows how all techniques can apply biomechanical principles to improve the force delivery, understand and prevent side effects, and achieve predictable results. Comprehensive coverage of diagnosis, treatment planning, and biomechanical strategies provides knowledge of how to apply specific mechanisms to specific problems.
Author: Lauren Lewandowski Publisher: ISBN: Category : Languages : en Pages : 63
Book Description
Modern orthodontists have a variety of treatment techniques and appliances at their disposal to treat anterior open bite malocclusions. Patients are often involved in decisions regarding their treatment. It is largely unknown which aspects patients take into consideration when choosing an orthodontic treatment plan. The aim of this study is to investigate orthodontic treatment plan acceptance by adults with anterior open bite in the United States and to identify associations between treatment plan acceptance and practitioner demographics, patient demographics, and dentofacial characteristics. A prospective, observational 3.5-year cohort study enrolled the patients of 91 National Dental Practice-based Research Network orthodontists and dentists who routinely perform orthodontic treatment. 345 adult patients were ultimately included in the sample population. Practitioners filled out forms regarding their personal and practice demographics. They also recorded patient dentofacial characteristics and listed their recommended treatment plans. Patients answered survey questions regarding their demographics, treatment goals, treatment plan accepted, and if applicable, reasons for not accepting the most highly recommended treatment plan. Univariate and regression models were performed to see if there were any associations between the responses and likelihood of accepting the most highly recommended treatment plan. Overall, the most highly recommended treatment plan for adult patients with anterior open bite was accepted 78% of the time. Of the patients recommended to have surgery, 60% accepted the plan. Patients with a history of prior orthodontic treatment (p=0.01) and a concave profile (p=0.02) were more likely to accept the most highly recommended overall treatment plan. When a patient had insurance covering orthognathic surgery, they were more likely to accept a surgical treatment option (p=0.002). Patients with severe crowding were less likely to accept a surgical treatment plan (p=0.006). The most common reasons for declining the most recommended plans were not wanting jaw surgery, and considering the treatment to be too invasive, risky, and/or costly. Generally, patient acceptance decreases with increasing invasiveness of the proposed options. Prior orthodontic treatment, concave profile, and insurance covering orthognathic surgery were significant predictors of accepting the most highly recommended treatment plan. About 40% of patients who were recommended orthognathic surgery as the best treatment plan declined that option.
Author: Jessica L. Collins
Author: Jessica L. Collins
Author: Guilherme Janson
Author: Charles J. Bolender
Author: Edward Hartley Angle
Author: Victor L. Lee
Author: David Gu
Author: Jason C. Johnson
Author: Jae Hyun Park
Author: Ravindra Nanda
Author: Lauren Lewandowski