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Viability Of Human Periodontal Ligament Fibroblasts After Time In Tooth Storage Media, Scott MacDonald 2017 Marquette University

Viability Of Human Periodontal Ligament Fibroblasts After Time In Tooth Storage Media, Scott Macdonald

Master's Theses (2009 -)

Periodontal ligament cell viability at the time of tooth replantation is of utmost importance for proper repair of the damaged tissues (1). Multiple different options are currently available for storage of an avulsed tooth. The goal of this study was to investigate new storage media and evaluate their ability to maintain cell viability over time. Materials and Methods: Cultured human periodontal ligament fibroblasts (hPDLF) were seeded on 96-well plates. These cells were exposed to different storage media including: Hank’s Balanced Salt Solution (HBSS), EMT Toothsaver (EMT), Save-A-Tooth (SAT), trehalose (T300), cell culture media, water, and different formulations of HBSS ...


Fluoride Varnish Application In The Pediatric Population, Ellen Gnaedinger 2017 University of Massachusetts Amherst

Fluoride Varnish Application In The Pediatric Population, Ellen Gnaedinger

Doctor of Nursing Practice (DNP) Projects

Purpose: The United States (U.S.) has a persistent problem of dental caries in primary teeth with a greater prevalence of dental caries found in minority and poor children. The majority of children in the U.S. experience dental caries in their primary teeth by age eight. This problem could be addressed by primary care providers applying fluoride varnish (FV) to children's teeth starting at the age of primary tooth eruption. The causes of dental caries in children’s primary teeth are multifactorial and therefore require multiple interventions. Around the world providers are utilizing FV as an effective and ...


An Investigation Of Surface Characteristics Of Enamel Treated With Infiltrative Resin: A Scanning Electron Microscopy Study, Danielle E. Easterly 2017 Virginia Commonwealth University

An Investigation Of Surface Characteristics Of Enamel Treated With Infiltrative Resin: A Scanning Electron Microscopy Study, Danielle E. Easterly

Theses and Dissertations

AN INVESTIGATION OF SURFACE CHARACTERISTICS OF ENAMEL TREATED WITH INFILTRATIVE RESIN: A SCANNING ELECTRON MICROSCOPY STUDY

Danielle E. Easterly, Doctorate of Dental Surgery.

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. 2017.

Director: Dr. Eser Tüfekçi

D.D.S., M.S., Ph.D., M.S.H.A.

Objective: To evaluate the microstructural changes of a resin infiltrant (ICON®, DMG America LLC, Englewood, NJ) after six months of simulated toothbrushing.

Materials and Methods: Ten extracted third molars (n=10) were collected. Artificial white spot ...


Effects Of Flash-Free Technique On Plaque Retention, White Spot Lesions, And Bracket Failure: A Randomized Clinical Trial, Payam Ishani Afousi 2016 University of Nebraska Medical Center

Effects Of Flash-Free Technique On Plaque Retention, White Spot Lesions, And Bracket Failure: A Randomized Clinical Trial, Payam Ishani Afousi

Theses & Dissertations

A side effect of orthodontic treatment is the development of white spot lesions (WSLs). This thesis attempted to evaluate the effects of the use of APC™ Flash-Free (FF) and conventional adhesives in bonding of orthodontic brackets on plaque formation and retention, WSL development, and bracket failure in-vivo. This was accomplished by collecting plaque samples from around orthodontic appliances and analyzing them using ATP-driven bioluminescence; scanning enamel surfaces using the Canary System™ to evaluate WSL development, and counting the number of spontaneous debonding of brackets of the 4 maxillary incisors in the first 6 months of treatment. It was found that ...


Correlation Of Tooth Length Measurements Made On Cbct And 3t Mr Images, Andrew Scott Taylor 2016 Loma Linda University

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 ...


Get In The Zone: A Survey Of Dental Professionals' Knowledge Of Ozone Therapy, Emily Hannah 2016 Western Kentucky University

Get In The Zone: A Survey Of Dental Professionals' Knowledge Of Ozone Therapy, Emily Hannah

Honors College Capstone Experience/Thesis Projects

Ozone therapy has been used in medicine for many years to treat a variety of ailments. Ozone is an unstable triatomic molecule made up of three oxygen atoms. This molecule has the ability to kill bacteria, fungi, parasites, and viruses. The researcher first was curious if there has been research done on uses of Ozone Therapy in the dental setting. After reviewing the literature there is indeed a use for Ozone Therapy to treat a host of dental problems including periodontal disease, ulcers, and carious lesions (also known as cavities). However, there are conflicting conclusions in the literature as to ...


Dentin Remineralization Around Ceramir Restoration, Lujain S. Alhuwayrini 2016 University of Pennsylvania

Dentin Remineralization Around Ceramir Restoration, Lujain S. Alhuwayrini

Dental Theses

AIM:

To determine the efficacy of Ceramir, a modified glass ionomer cement and a surfactant mono-n-dodecyl phosphate in remineralization of dentin around root caries restorations.

MATERIALS & METHODS:

45 permanent intact teeth were embedded in self-cured dental acrylic resin to expose buccal or lingual surfaces. The buccal/lingual surfaces were wet ground with carbide paper, final polishing were accomplished with aluminum to obtain highly polished dentin surface. Baseline Knoop micro hardness values were recorded. All specimens were then etched using 37% phosphoric acid for 5 seconds to demineralize dentin and to expose dentin collagen. The Knoop indenter micro hardness measurements were ...


Mechanical Properties Of Copper-Nickel-Titanium Archwires, Margaret Amelia Rosen 2016 Marquette University

Mechanical Properties Of Copper-Nickel-Titanium Archwires, Margaret Amelia Rosen

Master's Theses (2009 -)

Introduction: The initial phase of orthodontic therapy relies on flexible wires, usually composed of a nickel-titanium alloy, to apply a substantially constant load during tooth movement. Copper has been added to nickel-titanium archwires, resulting in an alloy with potential clinical advantages such as a lower stress hysteresis. Many orthodontic companies claim that their copper-nickel-titanium manufacturing process allows for the production of more consistent transition temperatures in the wires, allowing the orthodontist to customize treatment to various patients based on the force level needed. There are currently many manufacturers of these wires, creating a wide range of copper-nickel-titanium archwires from which ...


Thermal Properties Of Copper Nickel-Titanium Orthodontic Archwires, Joshua Gilbert 2016 Marquette University

Thermal Properties Of Copper Nickel-Titanium Orthodontic Archwires, Joshua Gilbert

Master's Theses (2009 -)

Introduction: Copper Nickel-Titanium (CuNiTi) is a relatively new composition of Nickel-Titanium (NiTi) archwires that was originally patented in 1991 as part of the Ormco line of wires. The patent has now recently expired and many other orthodontic companies are making their own CuNiTi wires. Advertisement claims have focused on the laboratory benefits of adding Copper (Cu) to the NiTi, however few independent laboratory testings have been conducted on these new wires to verify claims. The purpose of this study was to conduct thermal analysis of CuNiTi for all currently available wires in two Austenite Finish (Af) variants and two commonly ...


Influence Of Low Temperature Degradation On Microstructural Integrity Of Zirconia Dental Implants, Mona Monzavi Rahimi 2016 Loma Linda University

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 ...


Investigation On The Physical Properties Of Denture Base Resin Filled With Nano-Barium Titanate.Pdf, Nidal Elshereksi 2016 Universiti Kebangsaan Malaysia

Investigation On The Physical Properties Of Denture Base Resin Filled With Nano-Barium Titanate.Pdf, Nidal Elshereksi

Nidal Elshereksi

Background: Poly(methyl methacrylate) (PMMA) is the material of choice for denture
base construction because of its many good qualities. However, PMMA suffers from
polymerization shrinkage and low strength, and its slow water absorption causes serious
warpage and dimensional change in the material. Objective: This study aimed to
evaluate the effect of nano-barium titanate (NBT) inclusion on the water absorption,
polymerization shrinkage, and surface hardness of PMMA denture base. Results: The
PMMA composites showed lower water absorption and polymerization shrinkage than
pure PMMA. The density of the PMMA composites was increased by 5%, and a
marked improvement in surface hardness ...


Mitigating Distortion Of Light-Polymerized Composite Trial Bases, Jon Patrick Irelan 2016 Marquette University

Mitigating Distortion Of Light-Polymerized Composite Trial Bases, Jon Patrick Irelan

Master's Theses (2009 -)

Triad Visible Light Cure (VLC) Denture Base Material, a light-polymerizing resin material, is commonly used by clinicians to make trial bases during the fabrication of dentures and in planning the prosthetic and surgical rehabilitation of edentulous patients. A well-known drawback to this material, however, is its tendency to distort during the light-polymerization process. This distortion tends to occur most often towards the posterior aspect of the palate, and can negatively impact the bases ability to be retained through suction to the edentulous arch. The purpose of this study was to evaluate whether an experimental polymerization protocol can mitigate distortion during ...


Evaluation Of Die Trim Morphology Made By Cad/Cam Technology, Pratiksha Agrawal 2016 Marquette University

Evaluation Of Die Trim Morphology Made By Cad/Cam Technology, Pratiksha Agrawal

Master's Theses (2009 -)

Purpose: The purpose of this vitro study was to evaluate the accuracy of the morphology of digitally trimmed dies in comparison with the subgingival contour of a prepared tooth to be restored with a single crown. Materials and Methods: 20 human extracted teeth, 10 incisors and 10 molars were disinfected, mounted on dentoforms. The teeth were prepared for a single all ceramic restoration. Digital impressions of the preparations were made using the 3M Lava COS. With the data, the SLA models were fabricated with removable dies. The prepared tooth and the corresponding dies were then compared with the Rhino software ...


Torsion And Bending Properties Of Edgeendo Files, Chad Hansen 2016 Marquette University

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 ...


Viability Of Human Periodontal Ligament Fibroblasts After Storage In Save-A-Tooth, Emt Toothsaver And Hank's Balanced Salt Solution, Wonhee Lee 2016 Marquette University

Viability Of Human Periodontal Ligament Fibroblasts After Storage In Save-A-Tooth, Emt Toothsaver And Hank's Balanced Salt Solution, Wonhee Lee

Master's Theses (2009 -)

Introduction: Viability of periodontal ligament (PDL) cells is a key prognostic factor fora replanted tooth following avulsion. Dehydration results death of PDL cells, which inturn causes ankylosis upon replantation, followed by replacement resorption.Hank’s Balanced Salt Solution (HBSS) has been recommended as the standardstorage medium for an avulsed tooth. Save-A-Tooth and EMT Toothsaver (Dentosafe)are commercially available tooth storage media. With the best of our knowledge no studyhas yet compared these media for their effective tooth storage times. The aim of this invitro study is to evaluate Save-A-Tooth, EMT Toothsaver (Dentosafe), and HBSS fortheir effect on the viability of ...


Effects Of Microwave Irradiation On The Dimensional Stability Of Complete Denture Bases, Miguel Pappaterra 2016 Loma Linda University

Effects Of Microwave Irradiation On The Dimensional Stability Of Complete Denture Bases, Miguel Pappaterra

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Maintenance for complete dentures is a role that must be undertaken by the patient. It has been determined that two minutes of microwave irradiation at 650 Watts provides denture disinfection, and three minutes provide sterilization32,34. There is insufficient data on how this practice affects the long term dimensional stability of commonly used complete denture bases in the United States. Purpose: The purpose of this study was to perform an in-vitro investigation, testing and comparing the effects of microwave irradiation on the dimensional stability of three types of complete denture bases. Materials and Methods: An edentulous master cast with ...


Analysis Of Stresses In Mandible And Skull Under Angular Impact, Dr. Shobha E S, Dr. Suresh Nagesh, Dr. H P. Raghuveer, Mr. Vinay K. S 2015 Selected Works

Analysis Of Stresses In Mandible And Skull Under Angular Impact, Dr. Shobha E S, Dr. Suresh Nagesh, Dr. H P. Raghuveer, Mr. Vinay K. S

Innovative Research Publications IRP India

Finite element analysis has gained a significant attention in the field of biomechanics. The versatility of finite element analysis is the major reason behind its implementation and adoption has made the study of biomechanics much easier and simpler. FEA, as a tool has helped in analyzing the various organs in human body in different loading conditions. Be it Orthopedic,Maxillofacial fractures,Orthodontics, Prosthodontics, hemodynamics, it is finding its applications in all areas of biomechanics. In this paper, one such study has been carried out to understand the behavior of skull and mandible under inclined impacts. Skull is one of the ...


An In Vitro Evaluation Of Commercially Available Disposable Prophylaxis Angles, Caren Barnes, Lisa Fleming, Carl Russell 2015 University of Nebraska Medical Center

An In Vitro Evaluation Of Commercially Available Disposable Prophylaxis Angles, Caren Barnes, Lisa Fleming, Carl Russell

Caren M Barnes

Although a number of manufacturers are marketing disposable prophylaxis angles, no literature exists regarding the mechanical efficacy and efficiency of these products. It was the purpose of this in vitro evaluation to compare and evaluate five brands of commercially available disposable prophylaxis angles for vibration, noise, heat rise, and torque. Random samples of each brand of disposable prophylaxis angle were utilized. Vibration was measured with a height gauge and running motor; noise was measured with a sound meter and heat rise was measured from 68°F on the head and body of the disposable prophylaxis angles, and torque required to ...


The Evolution Of Prophy Paste, Caren Barnes 2015 University of Nebraska Medical Center

The Evolution Of Prophy Paste, Caren Barnes

Caren M Barnes

Dental hygienists have many products to choose from when deciding which prophy paste is best for each patient. To date, the evidence supporting prophy pastes formulated to remineralize enamel or eliminate dentinal hypersensitivity is somewhat unclear. Most of the research has been conducted in vitro among environments that do not accurately simulate clinical conditions. Additional clinical research performed in vivo is needed to provide the evidence base necessary for effective clinical decision making.


Polishing Esthetic Restorative Materiai, Caren M. Barnes 2015 University of Nebraska Medical Center

Polishing Esthetic Restorative Materiai, Caren M. Barnes

Caren M Barnes

When esthetic dental restorations are encountered during charting, they should be included in the treatment plan for the specific polishing procedures that are required. If the brand and type of esthetic restoration are known through the patient chart, the polishing procedures and products used should be those recommended by the manufacturer. If not possible, alternative polishing procedures should be used. A cleaning agent containing feldspar and rubber polishing cup can be used on all esthetic restorative materials with no chance of damage to the surface characterization. The principles for polishing esthetic restorations are the same as for natural teeth. If ...


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