Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Central incisor"”.
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The Effect of Orthodontic Treatment on Sagittal Root Position of the Maxillary Central Incisor
… Sagittal root position (SRP) of maxillary incisors is an important factor in implant treatment planning. Kan et al defined four classes of SRP in an effort to aid implant placement treatment planning and these SRP classifications represent a novel approach to describing bone changes around …
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In vivo Measurement of Color Relationships between the Maxillary Central Incisor and Canine as a Function of Age
… relationship between <em>in vivo</em> maxillary central incisors and canines to examine: (1) whether they share the same hue, but have different chromas (as commonly taught); and, (2) whether color differences (∆E values) change as a function of age.</p> <p><strong><em>Materials and …
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Novel Approach to Assess Periodontal Disease Severity Using Volumetric Analysis
… of bone loss on the facial plane of a maxillary central incisor at full and half root length along the vertical axis is directly proportional to volumetric change. The secondary aim was to evaluate if the variation of root volume is influenced by difference in root morphology.</p> <p>Three …
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Treatment Effects of Incisor Positioning on Anterior Tooth Display
… to determine the effect of changes in maxillary incisor position on anterior tooth display (ATD) in adult (n = 21) and adolescent (n = 38) orthodontic patients. The effects of anterior-posterior, vertical, and angular changes of the maxillary central incisor position during orthodontic treatment …
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Colour comparison of two composite materials to natural tooth structure: an in vitro study
… concept. Fifty six extracted anterior maxillary central incisor teeth were selected which were caries free, had no surface defects and within the colour range A3, B3, C3 or D2. The teeth were randomly divided into four colour groups (A3, B3, C3 and D2), each containing 14 teeth. A class IV cavity …
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AP Relationship of the Maxillary Central Incisors to the Forehead in Adult Korean Females
… anteroposterior relationship of the maxillary central incisors to the forehead in adult Korean females with harmonious profiles and in adult Korean female orthodontic patients. Methods: Ninety five photographic images of adult Korean females with good facial harmony (control group) were …
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Three-Dimensional Evaluation of the Effect of Maxillary Incisor Retraction on the Palatal Bone and Root Resorption
… effect of orthodontically retracting maxillary incisors on the height and labiolingual thickness of labial and palatal alveolar bone and incisor apical root resorption. <strong>Methods:</strong> Maxillary central incisor apical root resorption, labial and palatal alveolar bone height, and …
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Root Damage in Mechanically Fatigued Teeth
… half was mounted in orthodontic resin with the incisors upright and exposed. The block was inserted into a jig and placed into a servohydraulic mechanical testing machine. The left central incisor was fatigue loaded with a 2Hz, 10-90 N sinusoidal force for 100,000 cycles (approximately 14 …
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Dentofacial parameters associated with the unilateral palatally impacted canine
… maxillary arch shape and ratio and maxillary central and lateral incisor shape and ratio. Facial parameters: Three-dimensional (3D) images were taken for subjects in the prospective sample only, and were used to assess the following facial parameters: Face shape; face ratio and 3D distances …
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A Randomised Clinical Trial of the Effectiveness of Orthodontic Treatment between the 0.018-inch and the 0.022-inch Slot Conventional Ligation Bracket Systems
… CR-EVAL), Peer Assessment Rating (PAR) scores, incisor inclination, anchorage loss, and patient perception; and (2) biological side effects of treatment as evaluated by the amount of maxillary central incisor root resorption after nine months from the start of …
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The comparison of tensile strength of polycarboxylate cement among different surfaces of implant custom abutments
… & Methods A master cast of a maxillary right central incisor single implant restoration from a clinical case was utilized to fabricate five samples of each of five unique abutment types: titanium smooth surface (Ts), titanium with retentive grooves (Tr), titanium smooth surface with titanium …
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A Comparative Study of Conventional-Ligating and Self-Ligating Bracket Systems
… dry fields. Six different brands of upper right central incisor brackets with 0.018-in slots were evaluated. Group A : self-ligating bracket: Opal (Ultradent), Damon 2 (Ormco), Time (American Orthodontics), In-Ovation (GAC). Group B: conventional-ligating: Virage (American Orthodontics), and …
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Evaluation of implant restoration retention on various custom abutment materials and surfaces
… with an implant analog in the maxillary right central incisor site was fabricated and facilitated the design and manufacturing of 25 implant custom abutments planned for cement-retained restorations. Although all 25 implant custom abutments were designed to be identical in contour, each group …
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The relationship between masticatory stress and prognathism : a finite element and morphometric study
… compressive bite-force was applied at the left central incisor and the first molar, respectively. With the use of FEA, differences in the pattern and magnitude of Von Mises stress were noted under simulated mastication. The prognathic model consistently experienced more stress for a molar and …