Dentistry Commons^™

The Effects Of Instrument Handle Design On Forearm Muscle Activity During Scaling By Dental Hygienists, Jessica Rae Suedbeck

Dental Hygiene Theses & Dissertations

Purpose: The purpose of this study was to determine the effects of 4 different commercially available instrument handle designs (A. 16 grams and 12.7 mm diameter; B. 23 grams and 11.1 mm diameter; C. 21 grams and 7.9 mm diameter; D. 18 grams and 6.35 mm diameter) on the muscle activity of four forearm muscles during a simulated scaling experience. Methods: A convenience sample of 27 dental hygienists used a Columbia 13/14 curet with four different instrument handles to scale artificial calculus. While scaling, each participant’s muscle activity was measured using surface electromyography (sEMG). Participants completed an end user opinion …

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 …

Outcomes Of Primary Endodontic Therapy Provided By Endodontic Specialists Compared To Other Providers, Jacob Burry

Master's Theses (2009 -)

Introduction: The objective of this study was to compare the outcomes of initial non-surgical root canal therapy (NSRCT) for different tooth types provided by both endodontists and other providers. Methods: Using an insurance company database, 487,476 initial NSRCT procedures were followed from the time of treatment to the presence of an untoward event indicated by Current Dental Terminology (CDT) codes for retreatment, apical surgery, or extraction. Population demographics were computed for provider type and tooth location. Kaplan-Meier survival estimates were calculated for 1, 5, and 10 years. Hazard ratios for provider type and tooth location were calculated using the Cox …

J Mich Dent Assoc Apr 2016

The Journal of the Michigan Dental Association

Archival issues of the Journal of the Michigan Dental Association may include reports on the activities of the association and its members, clinical articles, information on legal and ethical practice considerations, and perspectives of interest to MDA members and those in the oral health profession.

J Am Coll Dent 2016 83 2

Journal of the American College of Dentists

The Journal of the American College of Dentists (JACD) publishes scholarly articles, editorials, essays, and reflections addressing the ethical, professional, and social dimensions of dentistry. The Journal serves as a forum for advancing ethics, professionalism, leadership, and excellence within the dental community. By fostering dialogue across disciplines and perspectives, JACD provides readers with insights that encourage ethical, professional practice, lifelong learning, and service to the public, reinforcing dentistry’s commitment to advancing oral healthcare and the common good.

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. …

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 …

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 in turn causes ankylosis upon replantation, followed by replacement resorption. Hank’s Balanced Salt Solution (HBSS) has been recommended as the standard storage medium for an avulsed tooth. Save-A-Tooth and EMT Tooth saver (Dentosafe)are commercially available tooth storage media. With the best of our knowledge no study has 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 for their effect on …

The Effect Of Magnification Loupes On Posture During Instrumentation By Dental Hygienists, Emily Anne Ludwig

Dental Hygiene Theses & Dissertations

Purpose: The purpose of this study was to determine the effects of dental magnification loupes on posture during instrumentation. Methods: A convenience sample of twenty-seven righthanded dental hygienists with no history of injuries or disabilities of the head, neck, and trunk regions was enrolled. Baseline posture calibration was taken. Accelerometers were placed on four locations of the head and trunk (occipital pole of head, cervical vertebrae: C5, thoracic vertebrae: T5, lumbar vertebrae: L1) to measure changes in posture. Accelerations in three axes were recorded (anterior/posterior (AP), medial/lateral (ML), vertical (VT)). Mean accelerations of the three axes were used to compute …

Bilateral Radicular Cyst With Severe Destruction Of The Buccal Cortical Plate Secondary To Endodontic Failure, Rabia Ghafoor, Kiran Rehman

Department of Surgery Docs

Abstract

Large apical radiolucencies after endodontic treatment are usually advised orthograde retreatment, apical surgery and that too with a guarded prognosis. Microsurgical techniques, the use of ultrasonic and magnification aides, have been in use in the developed countries for the past few decades and have shown significant improvement in long-term success of such cases. MTA is proposed as one of the best materials for sealing root end surfaces. In this report, the healing response of cases of 2 large apical radiolucencies, found separately in the anterior maxilla, which were treated by orthograde as well as retrograde endodontic treatments and guided …

Adam10 Localization In Temporomandibular Joint Disk With Internal Derangement: An Ex Vivo Immunohistochemical Study, Carla Loreto, Giovanni Paolo Salvatore Chiarenza, Giuseppe Musumeci, Paola Castrogiovanni, Rosa Imbesi, Alessandra Ruggeri, Luis Eduardo Almeida, Rosalia Leonardi

School of Dentistry Faculty Research and Publications

The purpose of this study was to determine the presence of ADAM10 in temporomandibular joint disk with internal derangement. Twenty-five paraffin blocks of displaced temporomandibular joint (TMJ) disk specimens from earlier investigations were retrieved from the archives of the University of Catania. Of these 16 had been removed from females and 9 from males; 11 with anterior disk displacement with reduction (ADDwR) and 14 with anterior disk displacement without reduction (ADDwoR). The sections were dehydrated, embedded in paraffin and cut. Then they were incubated in 0.3% H₂O₂/methanol and half of sections from each sample were incubated …

An Unethical Way To Compensate For Lower Insurance Plan Fees, Michael G. Maihofer Dds

The Journal of the Michigan Dental Association

The author examines a specific question about the ethics of insurance billing by reviewing  it through the ethical principles of the ADA Code-specifically that of Veracity.

Finasteride Adverse Effects And Post-Finasteride Syndrome; Implications For Dentists, Stana Paunica, Marina Giurgiu, Andrei Vasilache, Ioana Paunica, Ion Motofei, Adriana Vasilache, Horia Traian Dumitriu, Anca Silvia Dumitriu

Journal of Mind and Medical Sciences

Finasteride is a 5α-reductase inhibitor widely used in present in the therapeutic approach of androgenic alopecia. Adverse effects consist in variable sign and symptoms, the most common being represented by mental troubles (reduced feeling of life pleasure or emotions, depression), physical impairments (loss of muscle tone and/or mass) and sexual complains (loss of libido and sexual potency). An increasing number of studies identify and describe even a post-finasteride syndrome (persistent adverse affects three months or more after finasteride cessation) or new adverse effects including but not limited at the skin level or oral cavity (marginal periodontium).

We intend to present …

Ada News - 03/21/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Ada News - 03/07/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Molecular Mechanisms Of Squamous Cell Carcinoma Tumor Stem Cell Creation Via High Nitric Oxide (Hno) Adaptation, Niresh T. Kuganeswaran '16, Krishi Korrapati '17, Thomas Wan '16, Timothy Tamas, James A. Radosevich

Student Publications & Research

Cancer relapse or recurrence is defined as the return of cancer or its signs/symptoms after a period of improvement. Surgery may not remove all cancer cells and leave behind a few which cannot be detected by scans or other tests. It is also possible that some tumor cells are resistant to chemotherapy or radiation. Although many cancer cells are killed by these treatments, there may exist a few which contain a different genetic makeup which allows them to survive. These hypermalignant cancer cells, or cancer stem cells (CSCs), have been associated with causing cancer relapse. It has also been predicted …

Role Of Pseudogenes In Cancer Stem Creation Via High Nitric Oxide (Hno) Adaptation, Krishi Korrapati '17, Niresh T. Kuganeswaran '16, Thomas Wan '16, Timothy Tamas, James A. Radosevich

Student Publications & Research

Gene chip analysis of ten HNO adapted cell lines (Squamous cells: SCC-016, SCC-040, SCC-056, SCC-114, SCC-116; Adenocarcinomas: A549, BT20, Hs578, MCF7, and T47D) was carried out. Known pseudogenes were identified in each line, as well as their coding counterparts.

The adenocarcinoma cell lines had no up regulated pseudogenes, while they had the following down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, AC004490.1, LDHBP, RP11-572H4.2. The squamous cell carcinomas (SCCs) had the following up regulated pseudogenes: RPL37AP1, AC138972.1, RP11-641D5.1, AC005534.6, AC022431.1, RPL26P12, and they had these down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, RBMXP1, RP11-20O23.1, RP11-551G24.2. All cell lines adhered to the hypothesis that an increase …

Implementing A Minimally Invasive Approach, Diana V. Macri

Publications and Research

The World Health Organization notes that 60% to 90% of children and nearly 100% of adults have a history of dental caries. The caries process begins with the action of organic acids, which are produced by bacteria found in organized dental plaque via the anaerobic metabolism of dietary sugars. When this dental plaque goes undisturbed, organic acids may initiate the early stages of demineralization. Demineralization gradually weakens the tooth structure, making it more susceptible to plaque formation and demineralization. Remineralization is the process by which the damage to these surfaces is repaired by replacing surface minerals utilizing therapies such as …

New Dentist News (March 2016), Ada Committee On The New Dentist

New Dentist News

New Dentist News offers timely information on scientific, social, educational, political and economic developments affecting new dentists. This collection is historical and items may not reflect current standards. For up-to-date information contact the ADA. The New Dentist News was alternately titled ADA Lifeline, 1997-June 2001.

Surface And Cross-Sectional Characterization Of Titanium-Nitride Coated Nickel–Titanium Endodontic Files, Youssef S. Al Jabbari, Theodoros Koutsoukis, Suliman Al Hadlaq, David W. Berzins, Spiros Zinelis

School of Dentistry Faculty Research and Publications

Background/purpose

Although the effect of experimental surface modifications on various properties (e.g., fatigue, wear) on coated files have been tested in the past, there is no report for the coating quality of commercially available TiN coated files. The aim of this study was to characterize the surface and cross section of TiN coated endodontic files.

Materials and methods

TiN coated nickel–titanium endodontic files (EasyShape) were surface and cross-sectionally analyzed via scanning electron microscopy backscattered electron imaging and energy-dispersive X-ray spectroscopy analysis in spot, area, and line scan modes.

Results

Surface imaging revealed parallel oblong regions with higher mean atomic …