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Full-Text Articles in Medicine and Health Sciences
Working Length Determination In Palatal Roots Of Maxillary Molars, Melanie A. Kim-Park
Working Length Determination In Palatal Roots Of Maxillary Molars, Melanie A. Kim-Park
Theses and Dissertations
The aim of this study was to determine if a buccal curvature in the palatal roots of maxillary molars affected the clinician’s ability to accurately determine working length. Twenty-seven extracted, human maxillary molars were sorted by palatal root curvatures as J- and C-type and the angle of curvature was determined. Straight-line access was made and a #20 file was placed into the canal until the tip was visible at the apical foramen then withdrawn. The file, tooth and calibration wire were radiographed on one image using the RVG. Actual (file) and radiographic (tooth) lengths were determined using the RVG ruler. …
The Effect Of Endodontic Solutions On Resorcinol-Formalin Paste, Ronald Nicholas Vranas
The Effect Of Endodontic Solutions On Resorcinol-Formalin Paste, Ronald Nicholas Vranas
Theses and Dissertations
This study determined if any of four endodontic solutions would have a softening effect on resorcinol-formalin paste and if there were any differences in the solvent action between these solutions. Resorcinol, formalin and zinc oxide were mixed and allowed to set for 30 days. The solutions tested were 0.9% sodium chloride, 5.25% NaOCl, chloroform and Endosolv R. Seven samples per solution were tested and an additional seven samples served as controls. Each sample was saturated with one of the solutions and the depth of penetration was tested at 1 min, 2 min, 5 min, 10 min and 20 min using …
Placement Of Mineral Trioxide Aggregate Using Two Different Techniques, Anita Aminoshariae
Placement Of Mineral Trioxide Aggregate Using Two Different Techniques, Anita Aminoshariae
Theses and Dissertations
AbstractTHE PLACEMENT OF MINERAL TRIOXIDE AGGREGATE USING TWO DIFFERENT TECHNIQUESBy Anita Aminoshariae, D.D.S.A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth UniversityVirginia Commonwealth University, 2003Major Director: Gary R. Hartwell, D.D.S., M.S.Chairman and Professor, Department of EndodonticsThe purpose of this study was to determine if the adaptation of Mineral Trioxide Aggregate (MTA) to the walls of the samples would differ when placed into simulated root canals of varying length using two different placement and condensation methods. Hand condensation was compared to ultrasonic condensation. Eighty polyethylene tubes were divided into four groups …
Cleaning Efficiency Of Nickel Titanium Gt And .04 Rotary Files When Used In A Torque Controlled Rotary Handpiece, Calvin Buford Suffridge
Cleaning Efficiency Of Nickel Titanium Gt And .04 Rotary Files When Used In A Torque Controlled Rotary Handpiece, Calvin Buford Suffridge
Theses and Dissertations
This study determined if the cleaning efficiency of NiTi rotary files in an endodontic electric handpiece using a no torque control setting was superior to that obtained when using the torque control feature. Fifty extracted human anterior teeth with straight canals were divided into two groups of 20 and two control groups of 5. Canals were instrumented with GT and .04 Profile NiTi files until a size 35 advanced to working length. Samples were sectioned, the apical 6 mm of the canal was photographed (x20) and projected onto a 3 x 4 foot grid with squares measuring 0.5 inches each. …