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3 Dimensional Morphologic Analysis Of The Craniofacial Skeletal Complex Using Geometry Based Superimposition And Normalization
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Book Synopsis 3-dimensional Morphologic Analysis of the Craniofacial Skeletal Complex Using Geometry-based Superimposition and Normalization by : Jay Hyuck Sung
Download or read book 3-dimensional Morphologic Analysis of the Craniofacial Skeletal Complex Using Geometry-based Superimposition and Normalization written by Jay Hyuck Sung and published by . This book was released on 2013 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction : Cephalometrics is a radiographic technique used to analyze craniofacial structures for diagnostic or analytic purposes. However, conventional cephalometrics has many limitations, including the fact that it is entirely landmark-dependent and based on a 2-dimensional image. In previous studies, Fourier descriptors have been used to describe part of the craniofacial structure. However, these studies are insufficient providing a complete set of information to fully analyze craniofacial morphology. The aim of this study is to develop a true 3-dimensional description of the craniofacial structure that will provide the basis of morphologic analysis in a more comprehensive and effective way. Materials and Methods : CBCT images taken at UCLA School of Dentistry by the Newtom 3G CBCT scanner (Image Works) were collected. Samples with significant craniofacial defects were excluded. Using 10 samples without morphologic abnormality, the curved outline of the craniofacial structure was defined by collecting the coordinates of the points along the border of the shape. The superimposition and averaging was done using procrustes analysis. Geometric algebraic methods were used to combine all the curved outlines to construct an average shape of the whole craniofacial structure allowing for superimposition and comparison. Results : The outline of the skull was successfully aligned in 3-dimensional space to represent the craniofacial structure. The normalized form provided a basis for the comparison of an individual sample to the group average. The new method showed advantages over the conventional cephalometrics by eliminating the constraint factors of 2-dimensional images. This allows us to analyze difference and irregularities of craniofacial morphology in a more accurate and effective way. Conclusion : The curve and surface information extracted from CBCT image data could be used to find a normalization of the population, which is a basis for a 3-dimensional cephalometric analysis to overcome the limitations of conventional cephalometry.
Book Synopsis Craniofacial 3D Imaging by : Onur Kadioglu
Download or read book Craniofacial 3D Imaging written by Onur Kadioglu and published by Springer. This book was released on 2019-01-28 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed to serve as an up-to-date reference on the use of cone-beam computed tomography for the purpose of 3D imaging of the craniofacial complex. The focus is in particular on the ways in which craniofacial 3D imaging changes how we think about conventional diagnosis and treatment planning and on its clinical applications within orthodontics and oral and maxillofacial surgery. Emphasis is placed on the value of 3D imaging in visualizing the limits of the alveolar bone, the airways, and the temporomandibular joints and the consequences for treatment planning and execution. The book will equip readers with the knowledge required in order to apply and interpret 3D imaging to the benefit of patients. All of the authors have been carefully selected on the basis of their expertise in the field. In describing current thinking on the merits of 3D craniofacial imaging, they draw both on the available scientific literature and on their own translational research findings.
Book Synopsis Novel Average 3-D Skull Models: An Alternative to Cephalometry by : Yasas SHRI NALAKA JAYARATNE
Download or read book Novel Average 3-D Skull Models: An Alternative to Cephalometry written by Yasas SHRI NALAKA JAYARATNE and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional two-dimensional (2-D) cephalometric methods suffer from several inherent errors. With the introduction of Cone-beam Computed Tomography (CBCT), an accurate three-dimensional (3-D) representation of the craniofacial form could be generated. Objectives: The overall objective of this pilot study was to overcome limitations of traditional 2-D cephalometry by developing and testing a protocol for generating an average 3-D human skull using CBCT images. Specific goals were 1) To identify landmarks and regions on the skull appropriate for geometric morphometric analysis especially in relation to orthognathic surgery patients, 2) Develop protocol for applying geometric morphometric techniques to generate an accurate 3-D average skull model suitable for surgical orthodontic applications, 3) To compare the gender differences between the male and female average skull models, and 4) To explore the usefulness of the normalized skull models for diagnosis and evaluation of treatment outcomes. Methods: Thirty CBCT scans obtained from normodivergent adults with Class I skeletal pattern were used. Geometric morphometric analysis of these scans was performed with the Checkpoint software (Stratovan Corporation, Davis, CA). Eighteen landmarks and 8 patches with semi-landmarks encompassing a total of 666 points were identified on each 3-D surface model generated from the CBCT scan. Once homologs points were collected statistical shape analysis was performed using absolute averaging and Procrustes superimposition technique. Once population averages were computed, normalization was performed on two specimens with Class II and III skeletal malocclusions. Results: Simple linear measurements computed from 3D coordinate data revealed that males had a significantly larger anterior cranial base length, transverse dimensions and ramus height. Two 3-D skull models were generated for each gender based on the aforesaid absolute and Procrustes averaging techniques. Normalization of 3-D skulls with Class II and III deformities enabled the identification of most affected regions in the skull that needs to be corrected by orthognathic surgery. Conclusion: The constructed average 3-D skull models were a viable alternative to the traditional 2-D cephalometry. These models can be used for diagnosis, treatment planning and evaluating treatment outcomes.
Book Synopsis The Development of Quantifiable 3-Dimensional Korean Adult Normative Skulls and Its Clinical Application by : Peter Lee
Download or read book The Development of Quantifiable 3-Dimensional Korean Adult Normative Skulls and Its Clinical Application written by Peter Lee and published by . This book was released on 2016 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives: The establishment of a true 3-dimensional (3D) skeletal analysis of cone beam computed tomography (CBCT) images for orthodontic diagnoses has been a challenging endeavor, as previously proposed 3D analyses still rely upon 2-dimensional (2D) linear and angular measurements. In previous studies, the UCLA Section of Orthodontics, in a collaborative effort with the Laboratory of Neuro Imaging (LONI), developed a method for surface mapping a skull in three dimensions and expressing the curved outline of the structure using geometric algebraic methods. The long-term objective of the study is to establish a true three-dimensional (3D) skeletal analysis involving quantifiable 3D subnorms with respect to age, gender, and ethnicity. The specific aim of this study is to create a quantifiable 3D Korean adult normative skull that allows superimposition and comparison. Materials and Methods: Quantifying samples followed the inclusion criteria of Korean adult male/female of ages greater than 18 and skeletal class I relationship based on cephalometric analyses. Patients with craniofacial defects, significant skeletal asymmetry, and/or previous history of orthodontic treatment were excluded. Using 11 male and 13 female normative CBCT images, the surface map and curved outline of each skull were generated by projective mapping and harmonic interpolation, and acquisition of points along the surface, respectively. The Procrustes superimposition method was used for normalization of samples. Results: This normalized form provided a foundation for the comparison of an individual to the average, allowing sample differences to be visualized and quantified. The establishment of a linear distance map, directional vector map, and statistical map effectively showed clear deviation of individual skulls to the norm. Conclusion: The establishment of subnorms is a difficult task due to limited sample size from stringent inclusion and exclusion criteria, but can be successfully done utilizing the methods we developed. Further studies accounting for ethnicity, gender, and age will strengthen the diagnostic power of CBCT images in orthodontics.
Download or read book Facial Growth written by Donald H. Enlow and published by W.B. Saunders Company. This book was released on 1990 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Morphometrics with R by : Julien Claude
Download or read book Morphometrics with R written by Julien Claude and published by Springer Science & Business Media. This book was released on 2008-12-15 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to explain how to use R to perform morphometrics. Morpho- tric analysis is the study of shape and size variations and covariations and their covariations with other variables. Morphometrics is thus deeply rooted within stat- tical sciences. While most applications concern biology, morphometrics is becoming common tools used in archeological, palaeontological, geographical, or medicine disciplines. Since the recent formalizations of some of the ideas of predecessors, such as D’arcy Thompson, and thanks to the development of computer techno- gies and new ways for appraising shape changes and variation, morphometrics have undergone, and are still undergoing, a revolution. Most techniques dealing with s- tistical shape analysis have been developed in the last three decades, and the number of publications using morphometrics is increasing rapidly. However, the majority of these methods cannot be implemented in available software and therefore prosp- tive students often need to acquire detailed knowledge in informatics and statistics before applying them to their data. With acceleration in the accumulation of me- ods accompanying the emerging science of statistical shape analysis, it is becoming important to use tools that allow some autonomy. R easily helps ful?ll this need. Risalanguage andenvironment forstatisticalcomputingandgraphics. Although there is an increasing number of computer applications that perform morphometrics, using R has several advantages that confer to users considerable power and possible new horizons in a world that requires rapid adaptability.
Book Synopsis Handbook on Craniofacial Superimposition by : Sergio Damas
Download or read book Handbook on Craniofacial Superimposition written by Sergio Damas and published by Springer. This book was released on 2016-09-10 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive guide to a new soft computing technique which is used in complex forensic cases. The chapters include detailed technical and practical overviews, and discussions about the latest tools, open problems and ethical and legal issues involved. The book is closely associated with a successful research initiative, MEPROCS, and it will be of interest to researchers and practitioners in forensic medicine and computational intelligence.
Book Synopsis Morphological Integration by : Everett C. Olson
Download or read book Morphological Integration written by Everett C. Olson and published by University of Chicago Press. This book was released on 1999-10 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite recent advances in genetics, development, anatomy, systematics, and morphometrics, the synthesis of ideas and research agenda put forth in the classic Morphological Integration remains remarkably fresh, timely, and relevant. Pioneers in reexamining morphology, Everett Olson and Robert Miller were among the first to explore the concept of the integrated organism in both living and extinct populations. In a new foreword and afterword, biologists Barry Chernoff and Paul Magwene summarize the landmark achievements made by Olson and Miller and bring matters discussed in the book up to date, suggest new methods, and accentuate the importance of continued research in morphological integration. Everett C. Olson was a professor at the University of Chicago and at the University of California, Los Angeles. He was a former president of the Society of Vertebrate Paleontology. Robert L. Miller was associate professor of geology at the University of Chicago, associate scientist in marine geology at the Woods Hole Oceanographic Institution, and a member of the board of editors of the Journal of Geology.
Author :Philippa H. Francis-West Publisher :Springer Science & Business Media ISBN 13 :3642555705 Total Pages :217 pages Book Rating :4.6/5 (425 download)
Book Synopsis Craniofacial Development The Tissue and Molecular Interactions That Control Development of the Head by : Philippa H. Francis-West
Download or read book Craniofacial Development The Tissue and Molecular Interactions That Control Development of the Head written by Philippa H. Francis-West and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Craniofacial development is a multistep and intricate process initially involving a number of inductive interactions that control neural and neural crest development, which are followed by a series of epithelial-mesenchymal interactions that control outgrowth, patterning, and skeletal differentiation. Certain aspects of craniofacial development are unique developmental processes in higher vertebrates. First, in higher vertebrates the cranial neural crest, in contrast to the trunk neural crest, gives rise to the skeletal structures. These skeletal elements include those comprising mem brane bone and secondary cartilage, which with the exception of the clavicle are tissue types found exclusively in the head in higher vertebrates. Second, with the exception of the tongue, the origin of the musculature is distinct from other regions of the body. The body and tongue muscles are formed from the segmented epithelial somites whilst the head musculature is formed from unsegmented paraxial and prechordal mesoderm. Furthermore, the signalling cascades that control myogenic differentia tion appear to be distinct as determined by gene expression and the response of myogenic cells to growth factors. Finally, the neurogenic placodes, which give rise to the sensory organs and some cranial ganglia, are only found in the head. Over recent years, there have been significant advances in our knowledge of the molecular proc esses that control craniofacial development in a number of animal models. This has given insight into the genes that control many aspects of head development from the initial induction of the head to the final stages of differentiation.
Book Synopsis 3D Imaging, Analysis and Applications by : Nick Pears
Download or read book 3D Imaging, Analysis and Applications written by Nick Pears and published by Springer Science & Business Media. This book was released on 2012-05-22 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D Imaging, Analysis and Applications brings together core topics, both in terms of well-established fundamental techniques and the most promising recent techniques in the exciting field of 3D imaging and analysis. Many similar techniques are being used in a variety of subject areas and applications and the authors attempt to unify a range of related ideas. With contributions from high profile researchers and practitioners, the material presented is informative and authoritative and represents mainstream work and opinions within the community. Composed of three sections, the first examines 3D imaging and shape representation, the second, 3D shape analysis and processing, and the last section covers 3D imaging applications. Although 3D Imaging, Analysis and Applications is primarily a graduate text, aimed at masters-level and doctoral-level research students, much material is accessible to final-year undergraduate students. It will also serve as a reference text for professional academics, people working in commercial research and development labs and industrial practitioners.
Book Synopsis Facial Palsy by : Chieh-Han John Tzou
Download or read book Facial Palsy written by Chieh-Han John Tzou and published by Springer Nature. This book was released on 2021-05-27 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the surgical techniques available in reconstruction of the paralyzed face. It is divided into six parts. The first part introduces the topic of facial palsy, and the following parts provide detailed information on facial nerve reconstruction techniques, management of eye closure and smile reanimation. The book highlights symmetrization techniques and synkinesis and presents innovations and new frontiers in facial palsy.Written by an international group of experts who are committed to maintaining high standards and service in treating this condition and improving outcomes, it is a valuable source of information for clinicians and practitioners in plastic and reconstructive surgery, neurosurgeons and oral-and-maxillofacial surgeons, but also useful for researchers in this field.
Book Synopsis Craniofacial Trauma by : Nicolas Hardt
Download or read book Craniofacial Trauma written by Nicolas Hardt and published by Springer Science & Business Media. This book was released on 2010-03-24 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Craniofacial Trauma, Diagnosis and Management offers detailed guidance on the diagnosis, surgical planning, and interdisciplinary treatment of craniofacial trauma. The book is divided into two parts. The first, devoted to classification and diagnosis of craniofacial fractures, includes chapters on anatomy, radiology, fracture classification, fracture mechanisms, epidemiological aspects, symptoms, and specific related aspects of neuro-craniofacial injuries. The second part addresses the treatment of craniofacial trauma, examining operative principles and providing step-by-step descriptions of a variety of hard and soft tissue reconstructive procedures. Complications and late sequelae following craniofacial reconstruction are examined, and a further chapters is devoted to delayed reconstruction of craniofacial defects. New developments and the role of computer-assisted treatment planning are discussed in the final section. This manual will provide an indispensable reference for residents in maxillofacial training and for maxillofacial/ neurosurgeons in the specialized field of craniofacial traumatology.
Book Synopsis Atlas of Complex Orthodontics - E-Book by : Ravindra Nanda
Download or read book Atlas of Complex Orthodontics - E-Book written by Ravindra Nanda and published by Elsevier Health Sciences. This book was released on 2016-02-25 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing the Atlas of Complex Orthodontics, a revolutionary new text with step-by-step instructions for treating today's toughest orthodontic cases. Over 1,500 full-color clinical photographs, radiographs, and illustrations present each phase of treatment in this atlas-style guide, starting with the pre-treatment work-up, continuing through the treatment sequence, and ending with the final results. Drs. Ravindra Nanda and Flavio Uribe cover the latest techniques for managing moderate to severe orthodontic problems, including the use of temporary anchorage devices and the "surgery-first" orthognathic approach, to ensure you stay ahead of the curve in the ever-changing field of orthodontics. - A standardized, atlas-style presentation for each case takes you through the pre-treatment intraoral, extraoral, and smile analysis; the diagnosis and case summary (including the problem list and treatment plan); a brief discussion of the treatment options; the treatment sequence and biomechanical plan; and the final results. - UNIQUE! Over 1,500 high-quality photographs, radiographs, and line drawings illustrate the stages of treatment for a wide range of complex orthodontic problems to help improve understanding. - Discusses moderate to severe orthodontic problems, including: vertical problems; anterior-posterior problems; transverse problem; missing maxillary lateral incisors; impacted teeth; and surgical correction of dentofacial deformity. - Multidisciplinary approach to treatment helps you draw appropriately from multiple disciplines, redefine problems outside of normal boundaries, and reach solutions based on a new understanding of complex situations. - Coverage includes the "surgery-first" orthognathic approach (SFOA), a timesaving procedure in the combined orthodontic-surgical approach to selected cases of prognathism. - Highly regarded lead author, Dr. Ravindra Nanda, is Chair, Department of Orthodontics at University of Connecticut and widely known in the field of orthodontics. - Addresses the use of temporary anchorage devices (TADs) in correcting different types of malocclusion.
Book Synopsis Bolton Standards of Dentofacial Developmental Growth by : Birdsall Holly Broadbent
Download or read book Bolton Standards of Dentofacial Developmental Growth written by Birdsall Holly Broadbent and published by . This book was released on 1975-01-01 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Morphanalysis written by Graham Rabey and published by . This book was released on 1968 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :International Primatological Society. Congress Publisher :Springer Science & Business Media ISBN 13 :0306473461 Total Pages :437 pages Book Rating :4.3/5 (64 download)
Book Synopsis The Guenons: Diversity and Adaptation in African Monkeys by : International Primatological Society. Congress
Download or read book The Guenons: Diversity and Adaptation in African Monkeys written by International Primatological Society. Congress and published by Springer Science & Business Media. This book was released on 2002 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents information and insight into research on a wide range of topics related to guenon biology. Topics include evolution, taxonomy, biogeography, reproductive physiology, social and positional behaviour, ecology, and conservation.
Book Synopsis Textbook of Plastic and Reconstructive Surgery by : Deepak K. Kalaskar
Download or read book Textbook of Plastic and Reconstructive Surgery written by Deepak K. Kalaskar and published by UCL Press. This book was released on 2016-08-02 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by experts from London’s renowned Royal Free Hospital, Textbook of Plastic and Reconstructive Surgery offers a comprehensive overview of the vast topic of reconstructive plastic surgery and its various subspecialties for introductory plastic surgery and surgical science courses. The book comprises five sections covering the fundamental principles of plastic surgery, cancer, burns and trauma, paediatric plastic surgery and aesthetic surgery, and covers the breadth of knowledge that students need to further their career in this exciting field. Additional coverage of areas in which reconstructive surgery techniques are called upon includes abdominal wall reconstruction, ear reconstruction and genital reconstruction. A chapter on aesthetic surgery includes facial aesthetic surgery and blepharoplasty, aesthetic breast surgery, body contouring and the evolution of hair transplantation.The broad scope of this volume and attention to often neglected specialisms such as military plastic surgery make this a unique contribution to the field. Heavily illustrated throughout, Textbook of Plastic and Reconstructive Surgery is essential reading for anyone interested in furthering their knowledge of this exciting field. This book was produced as part of JISC's Institution as e-Textbook Publisher project. Find out more at https://www.jisc.ac.uk/rd/projects/institution-as-e-textbook-publisher
