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Full-Text Articles in Medicine and Health Sciences
Accuracy Of Implants Placed With Surgical Guides: Thermoplastic Vs. 3-D Printed, Caitlyn K. Bell
Accuracy Of Implants Placed With Surgical Guides: Thermoplastic Vs. 3-D Printed, Caitlyn K. Bell
Loma Linda University Electronic Theses, Dissertations & Projects
Purpose: The purpose of this study was to evaluate the accuracy of placed implants using two different guided implant surgery materials: thermoplastic vs. 3-D printed surgical guides. Materials and Methods:Twenty duplicate mandibular models, ten thermoplastic and ten 3-D printed surgical guides were used. Twenty implants were placed following the guided surgery protocol. Cone beam computed tomography scans of placed implants and the control implant were superimposed to measure deviations. Results: The thermoplastic group showed average deviations of 3.4 degrees, 1.3mm at the head, and 1.6mm at the apex of the implant compared to 2.36 degrees, 0.51mm, and …
Influence Of Low Temperature Degradation On Microstructural Integrity Of Zirconia Dental Implants, Mona Monzavi Rahimi
Influence Of Low Temperature Degradation On Microstructural Integrity Of Zirconia Dental Implants, Mona Monzavi Rahimi
Loma Linda University Electronic Theses, Dissertations & Projects
Zirconia dental implants have become more popular in the field of implant dentistry. However, concerns have been raised regarding low temperature degradation and its influence on phase stability and micro-structural integrity in terms of increased micro-crack formation. In the case of dental implants, this could possibly result in delamination and interference with bone to implant contact and eventually lead to loss of integration and failure. Nevertheless, no study has reported the effects on commercially available Zirconia dental implants. The primary aims of this study was to determine if there is a correlation between ageing duration and 1) depth of tetragonal-monoclinic …
Accuracy Of Volumetric Analysis Software Packages In Assessment Of Tooth Volume Using Cbct, Saylee Nimbalkar
Accuracy Of Volumetric Analysis Software Packages In Assessment Of Tooth Volume Using Cbct, Saylee Nimbalkar
Loma Linda University Electronic Theses, Dissertations & Projects
The purpose of this study was to evaluate the accuracy of volumetric analysis software packages in assessment of tooth volume using cone beam computed tomography and compare them to the volume obtained using an optical digital scanner. Twenty-four single rooted teeth indicated for extraction were collected. Cone beam computed tomography scans of these teeth resting in a custom scan jig were taken. Three dimensional digital models were obtained from the DICOM image cone beam computed tomography files using segmentation software packages (Anatomage, Mimics, and Amira) and volumes were calculated for each of the segmented teeth. The teeth were then scanned …