The Effects Of E-Cigarette Aerosol On The Force Degradation Of Elastomeric Chain: An In Vitro Pilot Study, Nicholas David Palmer

Graduate Theses, Dissertations, and Problem Reports

Background and Objectives

An ideal orthodontic force system should exert continuous light force. An orthodontist has the option to utilize different systems for closing orthodontic extraction space. A commonly used method when closing extraction space is to utilize orthodontic elastomeric chain. Energy Chain® (Rocky Mountain Orthodontics, Franklin, IN) allows for less deformation of shape following the initial stretch, more consistent force, and less force degradation over time. The mouth is a harsh environment that experiences daily changes in pH and temperature. These changes cause elastomeric chain to experience increased force degradation. The creation of the JUUL® (JUUL Labs, San Francisco, …

A Comparison Of Endodontic Root-End Filling Techniques: A Micro-Computed Tomography Analysis, Leslie P. Wolford

Graduate Theses, Dissertations, and Problem Reports

Introduction:

Researchers have compared the differences between hand compaction of root-end filling bioceramics with compaction of these materials by hand followed by ultrasonic activation (hand/ultrasonic compaction). Additionally, most of these researchers did not utilize Micro-Computed Tomography (Micro-CT) analysis. The purpose of this study is to evaluate total porosity volume of three different bioceramics when compacted by hand alone versus hand/ultrasonic compaction using Micro-CT Analysis.

Materials and methods:

Seventy-two human maxillary central incisors were selected for the study. All were subjected to orthograde endodontic treatment followed by root tip resection 3-mm from the apex at a 90° to the long axis …

A Comparison Of The Failure Rate Of Two Orthodontic Light-Curable Adhesives: A Chart Review, Ian Montgomery Weaver

Graduate Theses, Dissertations, and Problem Reports

A Comparison of the Failure Rate of Two Orthodontic Light-Curable Adhesives: A Chart Review

Ian Montgomery Weaver, D.D.S.

Background and Objectives: The overhead costs of running a private orthodontic practice are infamously high, thus there is a notable benefit to finding the most cost effective methods of treating patients while still maintaining high quality care. A relatively new light-cure orthodontic adhesive BracePaste®^® (American Orthodontics™, Sheboygan, WI), introduced to the market in 2017, can fluoresce under UV light to assist in identifying the difference between the enamel of the tooth and the adhesive material itself, an ability which can aid …

Shear Bond Strength Comparison Of Bioceramics To Root Dentin., Yasmin Alma Hoffman

Graduate Theses, Dissertations, and Problem Reports

Introduction: The purpose of this study is to compare the push-out bond strength of four bioceramic materials to root dentin that are used during regenerative endodontics. The bioceramics being tested are: 1. Biodentine®(Septodont); 2. EndoSequence BC Putty Fast Set® (Brasseler); 3. NeoPutty® (Avalon Biomed); and 4. ProRoot MTA White® (Dentsply). A high bond strength of a bioceramic material to root dentin will provide excellent seal. An improved seal may correlate with less potential for contamination of the pulp space that is undergoing regenerative activity. This in turn will lead to long-term clinical success. The null hypothesis is that there is …