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Author: Lin Jing-Song
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Author: Lin Jing-Song
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Author: Michele Kebert
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
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Author: Ralph Hamilton-Boyd Anderson
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ISBN:
Category : African Americans
Languages : en
Pages : 90
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Author: Jacy Papasikos
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
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Facial esthetics affect an individual's quality of life, self-image, social behavior, and public perception. The oro-facial region, in particular, plays a pivotal role in facial esthetics as dento-facial deformities can cause an individual to be perceived as less attractive, less successful, and less socially acceptable. The ability of orthodontic treatment to alter the soft-tissue facial form makes it a powerful tool to improve facial esthetics. Orthodontic treatment exhibits the most control over the soft-tissue in the lower third of the face, specifically the profile, position of the lips, and lower-third convexity. The position of the soft-tissue in this region plays an important role in the perception of facial attractiveness. Due to the importance of the oro-facial region in facial esthetics, it is of the utmost importance that orthodontists better understand the effects of their treatment on the soft-tissue. The majority of literature evaluates soft tissue changes using 2-D imaging, such as a profile photo or lateral cephalogram; however, the evaluation of soft-tissue changes requires more than just what is seen in a 2-D sagittal image. It is essential that this knowledge is obtained in the most accurate and realistic way possible; to understand changes in three-dimensions instead of two. Using 3dMD technology, pre- and post- three-dimensional soft tissue images of dental Class II patients with high or low mandibular plane angle, treated with or without extraction therapy, were compared. The objective was to determine the effect of extraction treatment on the soft-tissue of different facial types. Subjects were sampled from a database of patients treated by orthodontic residents under the supervision of faculty at the graduate orthodontic clinic of the Maurice H. Kornberg School of Dentistry at Temple University in Philadelphia, PA. Pre- and post-treatment 3dMD images were obtained of 42 dental Class II, high-angle (FMA ≥ 28) and low-angle (FMA
Author: Paul Chong Chan Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 156
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With the advent of cephalometrics in the 1930s, numerous studies have focused on the profile of a face to achieve a more esthetic orthodontic treatment outcome. With such heavy emphasis on facial esthetics, a shift in focus from the profile view to the oblique view has become necessary as the smile in the oblique view is what the general public evaluates. The purpose of this pilot study was to determine whether the current tools for diagnosis and treatment evaluation are sufficient. Currently, 2-dimensional composite photographs are utilized in evaluating the soft tissue. At Temple University, 3-dimensional images, which show all sides of the patient's face, are used adjunctively to 2-dimensional composite photographs. In this study, faculty members at the Temple University Department of Orthodontics were asked to complete surveys after viewing two different image modalities, 2-dimensional images and a 3-dimensional video of the same patient. They were asked to fill out the soft tissue goals for specific facial landmarks. Patient photos were in the smiling view as current literature lacks studies on this view. Faculty members' responses from analyzing the 2-dimensional images and 3-dimensional video for each patient were compared to determine which areas had frequent discrepancies from using two different image modalities. During the survey, a voice recorder captured any comments regarding the images. The ultimate goal of this qualitative pilot study was to identify when 3-dimensional imaging is necessary in treatment planning and evaluation, with an added hope to further advance research in 3-dimensional imaging and its vast possibilities to advance the field of orthodontics. Based on the data collected, the following conclusions were made: 1. The qualitative data highlighted that 3-dimensional imaging would be necessary in cases with skeletal deformities. 2. In the oblique view, 3-dimensional imaging is superior than 2-dimensional imaging by showing more accurate shadow, contour, and depth of the soft tissue. 3. Further improvement is necessary to create a virtual patient with treatment simulation abilities. 4. The comfort level among orthodontists of 2-dimensional imaging was higher than 3-dimensional imaging. With more widespread use of 3-dimensional imaging, more orthodontists may gradually reach a higher comfort level in using this relatively new technology. 5. Faculty members expressed high willingness to use 3-dimensional imaging if improvement in new technology could allow for more manipulation and accurate soft tissue prediction. 6. 3-dimensional imaging is superior in its efficiency, quick capture time, and lack of need for multiple images. Implementation of 3-dimensional imaging could streamline the records process and help with practice efficiency without compromising the image quality. 7. Both patients and orthodontists may benefit from using 3-dimensional imaging. Patients can see an accurate representation of themselves and possibly view their own treatment simulation upon further improvement in current technology. Orthodontists would benefit with much more accurate images that may serve as the virtual patient. 8. Besides the exorbitantly high cost, faculty members thought that more advances were needed and the current benefit was not great enough to justify the investment. The results were consistent with other studies that used the oblique view in that the 2-dimensional oblique view lacks depth and does not provide adequate information. With further improvement in current 3-dimensional imaging, this technology can benefit orthodontists in visualizing their patients. In addition, patients can benefit by hopefully seeing a live and accurate simulation of themselves instantly as a virtual patient. With these benefits of 3-dimensional imaging, it may one day be the new standard in patient records in the field of orthodontics.
Author: Ralph G. Grant
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
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Author: Virginia Bernal
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 706
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 960
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Author: Robert Charles Chiasson
Publisher:
ISBN:
Category : African Americans
Languages : en
Pages : 70
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