Endodontics and Endodontology Commons^™

Characteristics Of Permanent Teeth Diagnosed With Pulpal Necrosis: A Retrospective Study, William Lee

Theses and Dissertations

Objective: To determine associations of pulpally necrotic teeth with demographics, clinical findings, radiographic presentation, and periapical status.

Methods: Virginia Commonwealth University uses AxiUm software to record dental treatment and treatment notes. The current study involves a keyword search using the term “pulpal necrosis”. Factors compiled and evaluated included but not limited to patient demographics, location in the dental arch, clinical findings, radiographic presentation, and periapical status.

Results: Data has revealed that teeth with pulpal necrosis can present with a variety of different clinical findings. All of the following were observations of teeth with pulpal necrosis. A total of 325 teeth …

The Effect Of Parabiotic Reuterin On The Expression Of Genes Involved In Candida Albicans Biofilm Formation: An Ex Vivo Study, Anastasya Muna Riad, Armelia Sari Widyarman

Journal of Dentistry Indonesia

Candida albicans has a number of properties, including resistance to various antimicrobial agents, which allow it to survive in the root canals. Lactobacillus reuteri plays a role in maintaining oral health through interactions with the oral microbiome. L. reuteri has potential as a preventive and therapeutic agent against inflammatory diseases. Objective: The aim of this study was to investigate the effect of irrigation with a reuterin-containing solution on BCR1, ACE2, EFG1, and TEC1 gene expression in C. albicans root canal biofilms. Methods: L. reuteri was cultured in MRS broth and incubated anaerobically for 24 hours at 37°C. C. albicans was …

Comparison Of Endodontic Treatment Planning Decisions Using Cone Beam Computed Tomography Versus Periapical Radiography In Previously Endodontically Treated Molars, Sarah Alkanderi

Theses and Dissertations

Objectives: The aim of this study was to determine if treatment plans differ when evaluating previously endodontically treated molars using periapical images (PA’s) alone versus PA’s and CBCT.

Methods: A retrospective cohort chart review was conducted including 67 previously treated molars that had a CBCT taken. Two calibrated board-certified endodontists evaluated standard PA’s. A data sheet questionnaire regarding radiographic findings and treatment plan decisions was completed. Two weeks later, the same steps were repeated but the examiners evaluated both PA’s and CBCT images and again arrived at a recommended treatment plan.

Results: Agreement between raters was assessed with Cohen’s Kappa …

Potential Antimicrobial Methods For Provisionalizing Teeth After Endodontic Treatment, Laura T. Garden

Theses and Dissertations

POTENTIAL ANTIMICROBIAL METHODS FOR PROVISIONALIZING TEETH AFTER ENDODONTIC TREATMENT

By Laura T. Garden, DDS

A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University.

Virginia Commonwealth University, 2018

Thesis Advisor: Garry Myers, DDS

Department of Endodontics

Objective:To evaluate the effectiveness of a Chlorhexidine soaked cotton pellet on bacterial leakage.

Methods: Fifty-one extracted teeth, including six controls, were instrumented, obturated, and sealed with either a cotton pellet (CP), 2% Chlorhexidine soaked cotton pellet (CHX), or a Permaflo orifice barrier (OB). Each root was suspended between two chambers: the …

A Comparative Study Of Intraradicular Enterococcus Faecalis Biofilm Removal With Three Root Canal Treatment Systems: A Scanning Electron Microscopy Evaluation, Cyrous Ardalan

Theses and Dissertations

The objective of this study was to evaluate the biofilm removal efficacy of three root canal treatment systems: ProUltra® PiezoFlow™, traditional needle irrigation, and the GentleWave® system in an ex-vivo benchtop study. Twenty-four extracted maxillary and mandibular molars were selected. Teeth were all instrumented to a master apical file size #25 with 4% taper. Teeth were then randomly divided into four experimental groups and two control groups. The root canals were inoculated with a culture of Enterococcus faecalis and incubated for five weeks to form a biofilm. Each group was then treated with one of the different root canal treatment …

Torsion And Bending Properties Of Edgeendo Files, Chad Hansen

Master's Theses (2009 -)

Introduction: One important step of root canal therapy is the process of cleaning and shaping each canal. This process involves using endodontic rotary files combined with chemical irrigants to remove pulpal remnants and infected dentin from the canal while eliminating pathogenic bacteria. It is essential to maintain proper canal anatomy while cleaning and shaping. The challenge for the practitioner is to select a rotary file system that will be flexible enough to maintain canal anatomy but strong enough to prevent breakage under normal use. File flexibility allows for better maintenance of canal anatomy. A file’s resistance to torsional fatigue reduces …

The Effect Of Canal Preparation On Fill Length In Curved Root Canals Obturated With Realseal 1 And Thermafil Plus, David Woodard

MUSC Theses and Dissertations

Introduction: A preparation technique allowing for a predictable thermoplastic obturation length while ensuring a three-dimensional fill would be of clinical value. Methods: This in vitro study was conducted using 80 extracted mature and patent human 1st and 2nd maxillary and mandibular molar teeth with mesiobuccal (MB) roots exhibiting 20°- 45° canal curvature using Schneider's method. Teeth were randomly divided into 4 experimental groups (n=20). Groups 1 and 3 were prepared using a standard taper preparation (STP) to size 40/04 at working length (WL). Groups 2 and 4 were prepared using a varied taper preparation (VTP) to size 40/02 at WL. …

Comparative Analysis Of Torsional Strength Between Profile® Gt® And Gt® Series X(Tm) Nickel Titanium Rotary Instruments, Jake Reynolds

Theses and Dissertations

The purpose of this study was to compare the resistance to fracture by the twisting of two nickel titanium (NiTi) rotary file systems. The Profile® GT® (GT) and the GT® Series X(TM) (GTX) files were tested to analyze the maximum torsional strength and the maximum angular deflection at the time of separation of the files. For each system, ten new files were tested at each of the following eight taper/size designations for a total of 160 files: 20/0.04, 20/0.06, 30/0.04, 30/0.06, 30/0.08, 40/0.04, 40/0.06, and 40/0.08. The American National Standards Institute / American Dental Association Specification No. 28 was implemented …

Comparing Cyclic Fatigue Of The New Gt® Series X(Tm) Files To The Endo Sequence™ Rotary Instruments, Nathan Wayment

Theses and Dissertations

The purpose of this study was to examine the number of rotations to failure of two different rotary file systems, EndoSquence Brassler USA (Savannah, GA) and GT(TM) series X(TM). Files sizes 20,30,40 with 0.04, 0.06 tapers of GT series X and Endo Sequence files size and taper used were 20, 30, 40 with 0.04 and 0.06 taper. Like tip and tapers were compared between systems. All files tested were 25mm in length. Files were allocated into 12 groups of 10 files each, and mounted to a universal testing machine. Each file was rotated at 300 rpms until fractured occurred. The …

Comparing Cyclic Fatigue Of The New Gt® Series Xtm Files To The Original Profile® Gt® Rotary Instruments, Steven Osmond

Theses and Dissertations

The purpose of this study was to test the number of rotations to fracture of the M-Wire GT® Series X(TM) rotary files compared to the original ProFile® GT® rotary files in a simulated curved canal. Eighty GT® Series X(TM) files of 25mm length were divided into eight groups of ten, one for each of the new GT® Series X(TM) files. Eighty original ProFile® GT® files of 25mm length were divided into eight groups of the same tip and taper sizes consistent with the GT® Series X(TM) file groups. Files were rotated at 300 rpm. While the angle may have slightly …

Physical And Chemical Properties Of A New Mineral Trioxide Aggregate Material, David Lowell Spencer

Theses and Dissertations

The objective of this study was to compare the time to final set and compressive strength of the white mineral trioxide aggregate (MTA) formulation to the original grey MTA. To test compressive strength, each MTA formulation was placed into Teflon split molds for four hours at 37° Celsius (C) and 100% humidity. Compressive strength of both MTA formulations was measured at 24 hours (n=12) and 21 days (n=19) using an Instron Testing Machine. For determination of time to final set, each MTA formulation (n=6) was placed into a metal mold and maintained at 37° C and 100% humidity while setting. …

Your Teeth Can Be Saved By Endodontic Treatment (1977), American Dental Association, American Association Of Endodontists

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your Teeth Can Be Saved By Endodontic Treatment (1973), American Dental Association, American Association Of Endodontists

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your Teeth Can Be Saved By Endodontic Treatment (1962), American Dental Association, American Association Of Endodontists

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your Teeth Can Be Saved By Endodontic Treatment (1962), American Dental Association, American Association Of Endodontists

Patient Dental Health Education Materials 1929-1981

No abstract provided.