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- Keyword
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- Alganite bite registration; Tooth length measurements; Dental Materials (1)
- Lingual Arch Activation; Transpalatal Arch Activation; Shape-Driven Method; Force-Driven Method (1)
- Pharyngeal Airway; (1)
- Ricketts Analysis Measurements; Sirona Orthophos XG Plus; Dolphin (TM); Lateral cephalograms; (1)
- Root length measurement; Root length change; Orthodontic Treatment (1)
Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Ricketts Analysis Using Conventional And Dolphintm Generated Cbct Lateral Cephs, Yeganeh Parhizkar Jewell
Ricketts Analysis Using Conventional And Dolphintm Generated Cbct Lateral Cephs, Yeganeh Parhizkar Jewell
Loma Linda University Electronic Theses, Dissertations & Projects
Purpose: The aim of this study was to evaluate the difference between Ricketts analysis measurements made on Sirona Orthophos XG Plus (Sirona Dental Systems, Charlotte,NC) lateral cephalograms, and DolphinTM generated perspective and orthogonal lateral cephalograms from CBCT (NewTom 5G; QR srl, Verona, Italy). Materials and Methods: A Sirona digital lateral cephalogram and DophinTM synthesized CBCT lateral cephalograms of a radiographic phantom in orthogonal and perspective projections were created. Horizontal and vertical measurements were made in multiple planes on the radiographic phantom to compare each imaging modality. Twenty-five lateral cephalometric radiographs were selected retrospectively from the records of patients of …
Comparison Of Two Methods Of Transpalatal Arch And Lingual Arch Activation, Taoran Zhang
Comparison Of Two Methods Of Transpalatal Arch And Lingual Arch Activation, Taoran Zhang
Loma Linda University Electronic Theses, Dissertations & Projects
The TPA and LA can be activated with two methods: the “shape-driven method” where the appliance is made to match the final tooth position and the “force-driven method” where the appliance is made to make sure the force system delivered by it at the beginning is consistent with the planned tooth movement. This study compared the two methods in vitro quantitatively with typodont teeth and multi-axis force torque transducers in all three dimensions. Results: In the TPA first order activation, with comparable Fy (force on Y axis) reading, the shape-driven activation group had a significantly higher Mx (moment on X …
An Evaluation Of Root Length Change Measurements Using Intraoral Scan And Panoramic Radiographs, Elijah C. Wang
An Evaluation Of Root Length Change Measurements Using Intraoral Scan And Panoramic Radiographs, Elijah C. Wang
Loma Linda University Electronic Theses, Dissertations & Projects
Introduction: This study was intended to evaluate the accuracy of using panoramic radiographs to measure root length change over the course of orthodontic treatment, using intraoral scans of crowns, and a mathematical model to account for distortions in the radiographs. The study additionally evaluated whether a best-fit equation could be created from the calculated data to minimize differences to the measurements of root resorption made on CBCT scans. Materials and Methods: Twenty-one patients were selected who had comprehensive orthodontic treatment, and all teeth in the upper right quadrant were evaluated in this study. T1 and T2 CBCT images were compared …
Correlation Of Tooth Length Measurements Made On Cbct And 3t Mr Images, Andrew Scott Taylor
Correlation Of Tooth Length Measurements Made On Cbct And 3t Mr Images, Andrew Scott Taylor
Loma Linda University Electronic Theses, Dissertations & Projects
Objective. This study compared tooth length measurements made on cone beam computed tomography (CBCT) scans and 3-Tesla (3T) magnetic resonance (MR) scans performed with and without an alginate bite registration surrounding the crowns of the teeth. Materials and Methods. One CBCT scan, one MR scan with alginate bite registration, and one MR scan without bite registration were performed on 12 subjects. The alginate bite registration was used to provide a proton-rich material to surround proton-poor teeth in an attempt to improve visualization of teeth. DICOM formatted images from each of the three scans for each subject were oriented in all …
The Effect Of Orthodontic Treatment On Sagittal Root Position Of The Maxillary Central Incisor, Jeremy Haines
The Effect Of Orthodontic Treatment On Sagittal Root Position Of The Maxillary Central Incisor, Jeremy Haines
Loma Linda University Electronic Theses, Dissertations & Projects
Introduction: 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 the maxillary incisors. The effect of orthodontic tooth movement, specifically changes in inclination, on SRP is of interest in potentially facilitating immediate implant placement. Purpose: The purpose of this study was to use Cone Beam Computed Tomography (CBCT) to evaluate the adaptation of alveolar bone around the maxillary incisors as a result of orthodontic …
A Cbct Study Of Pharyngeal Airway Changes Due To Fixed Functional Appliances, Scott T. Peterson
A Cbct Study Of Pharyngeal Airway Changes Due To Fixed Functional Appliances, Scott T. Peterson
Loma Linda University Electronic Theses, Dissertations & Projects
Introduction: The purpose of this retrospective study, using head and neck Cone-Beam Computed Tomography (CBCT) images, was to measure and compare volumetric, area, and linear changes of the pharyngeal airway space in patients treated with a MARA or Herbst Class II correction appliances. Materials and Methods: Twenty-six patients treated with a MARA (mean age 13.2), nine with a Herbst (mean age 12.12) , and a control group twenty-five orthodontically treated class I patients (mean age 13.11). T1 and T2 CBCT images were measured and compared between the three groups for area, length, and width measurements along the velo-, oro-, and …