THREE-DIMENSIONAL EVALUATION OF SOFT-TISSUE CHANGES IN EXTRACTION AND NON-EXTRACTION TREATMENT OF CLASS II HIGH AND LOW MANDIBULAR PLANE ANGLE ORTHODONTIC PATIENTS PDF Download
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Author: Jacy Papasikos Publisher: ISBN: Category : Languages : en Pages : 114
Book Description
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: Jacy Papasikos Publisher: ISBN: Category : Languages : en Pages : 114
Book Description
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: Neil E. Uffner Publisher: ISBN: Category : Languages : en Pages : 90
Book Description
The annals of orthodontics are filled with studies aimed to understand how extraction orthodontic treatment might change the face. Although many studies have addressed profile changes due to extraction treatment, fewer studies have focused on how extractions change a patients smile. With the advent of surface imaging systems such as 3dMD, it is now possible to visualize the smile, and any changes incurred during orthodontic treatment, in three dimensions. Subjects for this study were chosen from the pool of 11-18 year old patients treated at the Podray Orthodontic Clinic at the Temple University Kornberg School of Dentistry. Subjects were Cl II patients, and must have been treated with either extraction of any combination of premolars or treated without extraction. Subjects were divided into four experimental groups based on two characteristics- mandibular angle (those with angles greater than 28o versus those with angles less than 28o) and treatment (extraction versus non-extraction). The resulting groups were separated as follows: high-angle extraction patients (n=8), low-angle extraction patients (n=6), high-angle non-extraction patients (n=7), and low-angle non-extraction patients (n=15). For each subject initial and final 3dMD images were superimposed using 3dMD Vultus software. A color histogram was constructed to visualize changes during treatment. The cheeks, commissures, upper and lower lips, chin, and nose, were also landmarked, and the changes in these landmarks were calculated. Volume changes were also calculated between pre and post treatment 3D data. Results showed that the lower lip and right commissure changes between high-angle extraction and non-extraction groups were statistically significant. A qualitative analysis of the histograms further supported these findings. In general, a greater change in soft tissue landmarks and soft tissue volumes could be seen in high-angle patients than low-angle patients. Differences in the changes that result from treatment type (extraction vs. non-extraction) were seen in the high-angle group. In contrast, similar changes result from treatment type (extraction vs. non-extraction) in the low-angle groups. Furthermore, the lip changes seen in extraction patients upon smiling are very similar to those changes seen in the same patient in repose. Most interestingly, soft tissue differences of the face due to treatment, growth, or both, seem to disappear upon smiling, with the exception of the lips. Qualitative assessment of these changes in the smile might be a more appropriate method for identifying soft tissue changes than statistical analyses. Similar studies with larger sample sizes are a promising direction for future research.
Author: Chung H. Kau Publisher: John Wiley & Sons ISBN: 1444347640 Category : Medical Languages : en Pages : 359
Book Description
Three Dimensional Imaging for Orthodontics and Maxillofacial Surgery is a major new specialist resource that identifies and applies the principles of three dimensional imaging to orthodontic practice. Readers are introduced to three-dimensional imaging, comparing it with the traditional two-dimensional assessments and exploring the benefits and drawbacks of these imaging modalities. Three Dimensional Imaging for Orthodontics and Maxillofacial Surgery centers on the appropriate application of three-dimensional imaging in the various practices related to orthodontic delivery and craniofacial surgery. The book guides the reader through detailed and illustrated examples of three-dimensional patient management in the context of daily practice. Both three-dimensional static and motion analyses are explored. The book also addresses growth, orthodontic treatment and surgical prediction, both static and dynamic and explores the use of morphing and finite element analyses with particular focus on surgical intervention. A key resource for specialist working in the fields of orthodontics and cranio-maxillofacial surgery. KEY FEATURES · Applies principles of 3D imaging to orthodontic practice · Surveys and analyzes current technologies and modalities, relating them to clinical usage · Companion website with motion images ( www.wiley.com/go/kau) · Richly illustrated in full color throughout · Brings together expert contributors for an international perspective
Author: Hans Pancherz Publisher: Quintessence Publishing (IL) ISBN: 9781850971696 Category : Malocclusion Languages : en Pages : 0
Book Description
This is a research-based book on the clinical use of the Herbst appliance in the management of Class 2 malocclusions. Different clinical problems and questions are addressed in the light of the corresponding research existing. Thus, in contrast to other Class 2 alternative treatments, the Herbst appliance approach is based on scientific research.
Author: Padhraig S. Fleming Publisher: John Wiley & Sons ISBN: 1118670574 Category : Medical Languages : en Pages : 169
Book Description
Comprehensive specialist manual covering the science and practice of functional appliance therapy Integrates clinical and academic elements with emphasis on evidence-based research and its clinical application Suitable for trainee and practicing orthodontists Includes more than 600 photographs to enhance clarity of topics covered Features contributions from top clinicians and researchers in the field
Author: Jacy Papasikos
Author: Jacy Papasikos
Author: Neil E. Uffner
Author: 
Author: Brittney A. Franklin
Author: Chung H. Kau
Author: Charles J. Bolender
Author: Hans Pancherz
Author: Padhraig S. Fleming
Author: Jack W. Chu
Author: Manigeh Askarieh