Download or read book Assessment of Tooth Movement in the Maxilla During Orthodontic Treatment Using Digital Recording of Orthodontic Study Model Surface Contours written by Angela Manbre Poulter Harris and published by . This book was released on 2006 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this project was to measure changes in dimension of the first three primary rugae and to evaluate tooth movement in the maxilla during orthodontic treatment in patients treated with and without premolar extractions.
Download or read book Novel Methods for Superimposition of Digital Maxillary Models and 3D Assessment of Orthodontic Tooth Movement written by Sameh Talaat and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tooth Movement written by Alpdogan Kantarci and published by Karger Medical Scientific. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the intention of improving the rate, quality, and stability of orthodontic tooth movement, those in the field are now moving toward accomplishing this 'acceleration' with minimally or non-invasive methods. New procedures have been widely tested in humans, animal models, and in vitro. While interest is growing both in the industry and at the clinical level, the understanding of the biology is limited. Considering that a simple increase in force will result in tooth morbidity and arrest of the tooth migration, a multi-disciplinary approach is critical for success. This publication brings together multi-disciplinary expertise on a wide variety of processes related to and involved in orthodontic tooth movement. The premise is that, by better understanding the biological structures and the mechanism through which they respond to biomechanical forces, one can get a better assessment of the 'acceleration'. This work presents research aimed at an improved understanding of conventional and accelerated orthodontic tooth movement from a biological perspective and will be of great value to clinicians, researchers, academics, and students.
Download or read book Evaluation of Transverse Bodily Tooth Movement and Its Effects on the Surrounding Hard Tissue written by Chad Jason Capps and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic expansion has been associated with uncontrolled tipping and alveolar bone loss. Recent research evaluating orthodontic expansion has shown osteoblastic activity on the buccal cortical bone apical to the dehiscence. We hypothesize that the negative effects seen during orthodontic expansion is a result of tipping rather than expansion. The aim of the present study was to produce buccal translation, with little or no coronal tipping, and evaluate hard tissue changes of the dental-alveolar complex. A prospective, randomized, split-mouth study was conducted with 11 patients (average age 14.1 years, range 12.5-16.9 years) requiring maxillary first premolar extractions for comprehensive orthodontic treatment. Pre and post-treatment records included models, photographs, and small field of view cone beam computed tomographic images (FOV CBCT) of the right and left maxillae. One maxillary first premolar was randomly chosen and moved to the buccal with 50 grams of force applied approximately at the tooth's center of resistance. The other premolar served as the control tooth. Forces were re-activated every 3 weeks for approximately 9 weeks of active movement, after which the tooth was held in place for 3 weeks to allow for maturation of the surrounding tissue. Pre and post treatment records were analyzed and superimposed to evaluate changes in the dental-alveolar complex. The results showed significant movement (0.96 mm, p=0.008) of the experimental premolar occurred 3 mm apical to the CEJ. There was minimal buccal tipping (2.2°, p=0.003). Maximum and minimum buccal bone heights decreased 0.60 mm (p=0.003) and 0.25 mm (p=0.262) respectively. The distribution of the maximum bone height measurement was bimodal, with 6 patients showing 0.42 mm (IQR -0.25 mm to 0.52mm) and 5 patients showing 8.3 mm (IQR 7.15 to 10.05) of vertical bone loss. Buccal bone thickness at the midline 3 mm apical to the CEJ decreased 0.63 mm (p=0.016). Based on direct measurements and CBCT superimpositions, buccal bone grew 0.46 mm (p=0.005) and 0.51 mm (p=0.036), respectively. Using light continuous forces, it is possible to produce buccal tooth movement with only limited amounts of tipping. With such movements buccal bone growth occurs, but there are potential limitations. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/152699
Download or read book Biological Mechanisms of Tooth Movement written by Vinod Krishnan and published by John Wiley & Sons. This book was released on 2009-03-09 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: The adaptation and development of biological concepts in orthodontics / Ze'evDavidovitch and Neal C. Murphy -- Biology of orthodontic tooth movement : an overview / Vinod Krishnan, Young Guk Park and Ze'ev Davidovitch -- The effects of mechanical loading on hard and soft tissues and cells / Itzhak Binderman . [und weitere] -- Genetic influences on orthodontic tooth movement / Maggie Zeichner-David -- The role of inflammation in defining the type and pattern of tissue response in orthodontic tooth movement / Masaru Yamaguchi -- Biological aspects of bone growth and metabolism in orthodontics / Song Chen, James K. Hartsfield Jr. and W. Eugene Roberts -- Markers of paradental tissue remodeling in the gingival crevicular fluid of -- Orthodontic patients / Laura R. Iwasaki and Jeffrey C. Nickel -- Effects of systemic diseases on orthodontic tooth movement / Ze'ev Davidovitch and Vinod Krishnan -- The effect of drugs and diet on orthodontic tooth movement / Vinod Krishnan and Ze'ev Davidovitch -- Biologically and clinically, what are optimal orthodontic forces and how are they applied in selective common malocclusions? / Vincent De Angelis and Ze'ev Davidovitch -- The biological background of relapse of orthodontic tooth movement / Jaap C. Maltha and Anne Marie Kuijpers Jagtman -- Mechanical and biological determinants of iatrogenic injuries in orthodontics / Vinod Krishnan.
Download or read book Three dimensional Image Analysis for Quantification of Tooth Movements and Landmark Changes written by Shuning Li and published by . This book was released on 2013 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantification of treatment outcomes (tooth displacement and bony changes) is the key to advance orthodontic research and improve clinical practices. Traditionally, treatment outcome were quantified by using two-dimensional (2D) cephalometric analysis. However, there are problems inherent in 2D analysis, such as tracing errors and inability to detect side-effects. Thus, a reliable three-dimensional (3D) image analysis method for treatment outcome quantification is of high interest. Systematic 3D image analysis methods were developed for digital dental cast models and Cone-Beam Computed Tomography (CBCT) models. A typical analysis procedure includes image reconstruction, landmarks identification, coordinate system setup, superimposition, and displacement or change calculation. The specified procedures for maxillary teeth displacements and anatomical landmarks movements were presented and validated. The validation results showed that these procedures were accurate and reliable enough for clinical applications. The 3D methods were first applied to a human canine retraction clinical study. The purposes of this study were to quantify canines and anchorage tooth movements, and to compare two commonly used canine retraction strategies, controlled tipping and translation. The canine results showed that (1) canine movements were linear with time; (2) the initial load system was not the only factor that controlled the canine movement pattern; and (3) control tipping was significantly faster than translation. The anchorage tooth results showed that (1) anchorage losses occurred even with transpalatal arch (TPA); (2) there was no significant difference in anchorage loss between the two treatment strategies; and (3) compared with removable TPA, fixed TPA appliance can significantly reduce the amount of anchorage loss in the mesial-distal direction. The second clinical application for the 3D methods was a mandibular growth clinical trial. The purposes of this study were to quantify skeletal landmark movements, and compare two widely used appliances, Herbst and MARA. The results showed that (1) the Herbst appliance caused mandibular forward movement with backward rotation; and (2) the treatment effects had no significant differences by using either Herbst or MARA appliances. The two clinical applications validated the methods developed in this study to quantify orthodontic treatment outcomes. They also demonstrated the benefits of using the 3D methods to quantify orthodontic treatment outcomes and to test fundamental hypotheses. These 3D methods can easily be extended to other clinical cases. This study will benefit orthodontic patients, clinicians and researchers.
Download or read book Effective and Efficient Orthodontic Tooth Movement written by James A. McNamara and published by Needham Press. This book was released on 2011 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontics is the presumed beneficiary of a variety of new technologies and protocols intended to hasten tooth movement, improve outcomes, and streamline treatment. Some are supported by data, some are not. This volume focuses on the biology and biomechanics of tooth movement, with emphasis on effectiveness and efficiency. The claims of supporters -- ardent and otherwise -- are examined via evidence-based studies that look at such techniques du jour as corticotomies, self-ligating bracket systems, temporary anchorage devices, and proposed pharmacological adjuncts. In addition, canine impaction and primary failure of eruption are discussed. The genetic basis of such clinical problems as root resorption also is considered. Contributors to this volume include Charles Burstone, Peter Miles, Tiziano Baccetti, Nan Hatch, James Hartsfield, Haluk Y_eri, Ravindra Nanda, Peter Buschang, and Flavio Uribe, Lorenzo Franchi, Sylvia Frazier-Bowers, Dan Grauer, Laura Iwasaki, Giuseppe Perinetti and Chester Handelman.
Download or read book CD44 Animals Display Decreased Orthodontic Tooth Movement Using a Murine Model written by Siddharth Rajiv Vora and published by . This book was released on 2013 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future improvements in orthodontic treatment require a comprehensive understanding of the reaction of paradental structures to an applied force, at the cellular and molecular level. Recent advances in molecular biology techniques have established transgenic and knock-out mice as robust tools in studying various physiological and pathological processes. To successfully utilize this tool in orthodontic research, a good model for orthodontic tooth movement (OTM) in mice is needed. The aim of this study was to characterize a model of OTM that can be used in effectively and efficiently in mice. As opposed to prior models, which apply mesializing forces to molars using NiTi coil springs, we fabricated orthodontic springs from 0.010" stainless steel wires designed to move maxillary molars in the palatal direction. The use of radiographs to measure tooth movement in our method, allows for multiple and frequent measurement to be made from individual animals over the entire experimental period, with good reliability and accuracy. We tested this method in mice lacking the CD44 gene and compared them to control mice. CD44 is a cell surface receptor present on osteoclasts and believed to be important in cell adhesion, migration and function. Our data indicate that CD44-/- animals have reduced overall tooth movement when compared to controls and also have a larger lag phase before tooth movement is observed. These data support existing evidence that CD44 may be important in osteoclast function and bone resorption.
Download or read book The Influence of Orthodontic and Orthopaedic Therapy on Mandibular Motion written by Andrew Noel Quick and published by . This book was released on 2017 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic functional appliances for the correction of Class II malocclusions work by both dental and orthopaedic effects on the mandible. In asymmetrical Class II malocclusions, unilateral appliances can be used to effect correction on the affected side. Very little is known about the effect of functional appliances on mandibular kinematics in general, and to date, no data has been found on the effect of a unilateral functional appliance on mandible movement. Ten subjects were recruited for the study, five in a group with a bilateral fixed FORSUS® fatigue resistant appliance, and five with a unilateral FORSUS appliance. Three participants in the bilateral group were lost to the study, leaving seven participants in total. Where possible, jaw movement recordings were taken pre-treatment, pre-FORSUS appliance placement (ie, after fixed appliances had been placed), pos-FORSUS removal, and post-treatment. Recordings were done using a 12-camera opto-electric Eagle system that monitored movement of the lower jaw relative to the cranium by tracking reflective markers. The mandible markers were mounted on a splint that rigidly fixed to the lower jaw. Participants were requested to do two open-close movements, protrusion movement and both left and right lateral excursion movements. Data were processed using a Butterworth filter and standardized to 100 data points The data were exported to a spreadsheet, where maximum opening, protrusion and for the unilateral group, rotation around the vertical axis was assessed. Descriptive statistical analysis was used to assess the recordings. There was individual variation in the recordings, but results showed that the use of a unilateral FORSUS appliance does not appear to alter either open-close, protrusion or rotation. Assessment of bilateral FORSUS was made difficult with only two participants completing the study, with both showing individual variation on both measures of open-close and protrusion. In this group particularly, treatment effects may have confounded the recordings. The placement of fixed appliances did not influence mandibular kinematics, and there appeared to be little difference between repeat open-close recordings within any particular recording session. In conclusion, the results indicate that a unilateral fixed FORSUS appliance does not alter jaw function either during or post-orthodontic treatment. Further research is indicated with both unilateral and bilateral FORSUS appliances, especially with regards to mandibular kinematic with the appliance in situ.
Download or read book Assessment of Malalignment Factors Related to the Invisalign Treatment Time Using Artificial Intelligence written by Sanghee Lee (Professor of orthodontics) and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: There have been questions about the efficiency of aligner treatment. Previous studies do not support the efficiency of the clear aligner treatment, nor is what type of tooth movement significantly extends treatment time clearly reported. Deep learning technology allows assessing large quantities of categorized tooth movements in a 3-dimensional manner possible to evaluate the efficiency. Objectives: The aim of this study is to identify predictors regarding type and severity of the malocclusion affect total Invisalign treatment duration based on intraoral digital scan utilizing Artificial Intelligence (AI). We hypothesize that the type of tooth movement and the degree of malalignment can determine total Invisalign treatment time. Methods: The subject of this retrospective clinical cohort are the 116 patients treated with Invisalign appliance at the Ohio State University, graduate orthodontic clinic. The initial and final 3D digital models were collected. A deep learning method were used for automatic tooth segmentation and landmark identification. The six degrees of freedom (DOF), representing types of malalignment of each tooth, were measured. Linear regression was performed to find the contributing factor associated with treatment time. In addition, the PAR score and a composite score combining 6 DOFs were separately correlated to the treatment time. Results: Among 6 DOF, the absolute maximum tipping (p-value=0.0066) and torque (p-value=0.0303) are positively associated with the total number of trays, indicating that a degree increase in maximum absolute tipping and torque movement implies that the number of trays required increases by 3.05 and 1.73, respectively. The total number of trays and the composite score, combining 6 DOF, showed a higher correlation (correlation coefficient=0.8, p-value
Download or read book Adult Orthodontics written by Birte Melsen and published by John Wiley & Sons. This book was released on 2012-04-23 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a major new work dedicated to the increasingly prominent area of adult orthodontics. Written by renowned contributors from the orthodontic community and beyond, and compiled by a world-class editor, it provides an authoritative resource on the subject, marrying together clinical guidance with a thorough evaluation of the evidence base. The opening chapters provide the context for adult orthodontics, including patient demographics and aetiology, and the book goes on to detail treatment planning considerations, including patient case profiles, suggesting initial outcomes and longer term expectations. Interdisciplinary and multidisciplinary approaches are discussed, including the links between adult orthodontics and periodontics, prosthetics and temporomandibular disorders. The book is accompanied by a website containing further examples of case studies and a wealth of clinical images. Set to become the gold standard resource on the subject, this book will be invaluable to all those providing orthodontic treatment to adults and those dealing with orthodontics as part of the inter-disciplinary management of the adult dentition. KEY FEATURES • A major new work on an expanding area of orthodontic treatment • Covers patient demographics, aetiology, treatment planning and maintenance issues • Includes case studies, suggesting realistic and optimal short and long term outcomes • Highly illustrated with full colour clinical photos • Accompanied by a website with further material: www.wiley.com/go/melsen
Download or read book The Influence of Obesity on Orthodontic Tooth Movement a Clinical Study written by Hayder Saloom and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rationale behind this study is to detect the effect of obesity and/or orthodontic treatment on the levels of the selected biomarkers in different bio-fluids. The second study is a prospective cohort study in which data were collected from 12-18 years old normal weight and obese patients at 4 time-points: (T1) prior to treatment at the normal records appointment; (T2) 1 hour following placement of the fixed appliance; (T3) 1 week following placement of the fixed appliance; and (T4) at the end of alignment stage (0.019 x 0.025 - inch stainless steel archwire in the lower arch). The responses to orthodontic treatment were assessed in different ways: (1) Rate of tooth movement using dental study casts (T1, T3, T4); (2) Pain and discomfort using a self-reporting questionnaire (1st week); and (3) Biochemical assay of markers in UWMS, GCF and peripheral serum (T1, T2, T3, T4). The data of this study presented that the rate of OTM was significantly higher in obese patients compared to normal weight, and obese patients needed less time to achieve tooth alignment compared to normal weight, but this was non-significant. Obese patients experience higher mean pain than normal weight patients accompanied by higher consumption of analgesics. Alongside, GCF was more likely to express biochemical changes during OTM compared to UWMS and serum, with GCF-levels of leptin; resistin, MPO and RANKL were significantly different between obese and normal weight patients and associated with observed rates of OTM.
Download or read book Handbook of Research on Computerized Occlusal Analysis Technology Applications in Dental Medicine written by Kerstein, DMD, Robert B. and published by IGI Global. This book was released on 2014-10-31 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern medicine is changing drastically as new technologies emerge to transform the way in which patients are diagnosed, treated, and monitored. In particular, dental medicine is experiencing a tremendous shift as new digital innovations are integrated into dental practice. The Handbook of Research on Computerized Occlusal Analysis Technology Applications in Dental Medicine explores the use of digital tools in dentistry, including their evolution as well as evidence-based research on the benefits of technological tools versus non-digital occlusal indicators. Comprised of current research on clinical applications and technologies, this publication is ideal for use by clinicians, educators, and upper-level students in dentistry.
Download or read book Assessment of Mandibular Surface Changes During Growth and Development written by Eliana Sarit and published by . This book was released on 2017 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth of the mandible affects the outcome of orthodontic treatment in children. Traditionally, evaluation of mandibular growth uses 2D cephalometric analyses. While still used by orthodontists today, these 2D analyses are fraught with errors in measurement associated with interpreting 2D projections of 3D structures. Cone Beam Computer Tomography (CBCT) provides a means to study craniofacial structures in 3D. The objective of this study is to identify 3D topographical changes of mandible during the period of growth and development in orthodontic patients. Ten subjects with serial CBCT images were selected from the Bolton-Brush collection. The age of the subjects ranged from 8 to 14 years-old. Mandibular growth is evaluated using serial pairs of CBCT images which are segmented, superimposed using regional voxel-based mutual information, and quantitatively evaluated in AmiraXImage®. Surface topography changes over time in these 19 subjects are reported as follows: 56% of surface remodeling at a threshold of 0.5mm, median remodeling of 0.6mm, 0.8mm 0.6mm SD. Intra- and inter-rater ICC reliability for for surface generation (0.82 and 0.90, respectively) and superimpositions (0.94 and 0.93, respectively) demonstrate the reliability of the technique. The findings of this study support theories of bone remodeling reported in histological and radiographic studies of mandibular growth.
Download or read book Information Technology and Orthodontic Treatment written by Andrea M. Ferrara and published by Craniofacial Publications. This book was released on 2003 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer technology is having an increased impact on the practice of orthodontics, with digital imaging and radiography, three-dimensional virtual models, and various CAD/CAM technologies affecting everyday practice. This symposium addresses this change and how it has improved patient care.
Download or read book Proceedings written by Foundation for Orthodontic Research and published by . This book was released on 1982 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship of Tooth Movement to Measured Force Systems written by Zackary T. Faber and published by . This book was released on 2002 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
