Dentistry Commons^™

The Effect Of Mechanical Vibration On Alveolar Bone Following Experimental Periodontitis: A Time Course Study, Joshua Murphy

Master's Theses (2009 -)

Introduction: High-frequency vibration with low magnitude acceleration has varying effects on alveolar bone. The objectives of this study were to establish a murine model for periodontitis and to explore the best time window of this model to investigate the effects of high frequency, low magnitude mechanical vibration on alveolar bone following ligature-induced experimental periodontitis. Materials and Methods: Ninety-five 11-week-old inbred strain C57BL/67 male mice were randomly assigned into four groups: 1) healthy control (n = 9); 2) healthy + mechanical vibration (n = 8); 3) experimental periodontitis + no treatment (n=7); and 4) experimental periodontitis + vibration (n = 9). …

Electrical And Mechanical Properties Of Bzt − Xbct Lead‐Free Piezoceramics, Raziye Hayati, Mohammad Fayazi, Hadi Diargar, Mohammad Kaveh, Lobat Tayebi

School of Dentistry Faculty Research and Publications

In this study, lead‐free (1 − x)Ba(Zr_0.2Ti_0.8)O3 − x(Ba_0.7Ca_0.3)TiO₃ compositions are synthesized via conventional solid oxide route, and the ceramics are fabricated with normal sintering in air. The effects of composition fluctuations on dielectric, piezoelectric, and mechanical properties are investigated. The phase structure and the microstructure are analyzed with X‐ray diffraction and scanning electron microscopy. The best dielectric and piezoelectric properties of ε_r = 11 207 and d₃₃ = 330 pC/N were obtained for BZT−0.35BCT and BZT−0.5BCT ceramics, respectively. The mechanical behavior—in terms of Vickers hardness and compressive and …

Corrosion Properties Of Various Orthodontic Fixed Retention Wires, Tara Lynn Groen

Master's Theses (2009 -)

Objective: It is known that stainless steel and other alloys readily corrode in the oral environment. Many different wire compositions and configurations are available on the market for fixed orthodontic retainers, yet few studies have focused on the corrosion of wires used for fixed retention. The aim of this study was to determine the general and crevice corrosion properties of 7 distinct fixed retainer wires. Methods: Seven types of fixed retainer wires were chosen for testing – solid, braided and twisted stainless steel wires; solid and twisted gold plated wires; a solid cobalt chromium wire; and a solid beta-titanium ribbon. …

Efficacy Of Invisalign: A Retrospective Case Series Of Intrusion, Extrusion, And Rotation With Trend Analysis, Kirsten Karkow

Master's Theses (2009 -)

Objective: To quantify efficacies and discrepancies of Invisalign® treatment of anterior intrusions, anterior extrusions, and incisor, canine and premolar rotations with correlations to age, gender, tooth, attachment, interproximal reduction, number of aligners, treatment time, and start date. Methods: Initial, progress, and final iTero® scans of patients treated with Invisalign® in the graduate Marquette University Orthodontics Clinic (Milwaukee, WI) were retrieved along with corresponding ClinChecks® as .stl files. These three-dimensional files were superimposed for best-fit using SlicerCMF4-0 software. A total of 67 anterior intrusions ≥ 0.5 mm, 39 anterior extrusions ≥ 0.5 mm, and 98 incisor, canine and premolar rotations ≥ …

Anatomical Considerations For Miniplate-Anchored Maxillary Protraction In Children With Unilateral Cleft Lip And Palate, Jared Holloway

Master's Theses (2009 -)

Objective: The aim of this study was to explore the anatomical considerations of children with unilateral cleft lip and palate (UCLP) for the purpose of placing orthodontic miniplates for maxillary protraction. Materials and Methods: Cone beam computed tomography (CBCT) images of 41 patients with UCLP (18 females and 23 males with a mean age of 9.8) and 36 (19 females and 17 males with a mean age of 9.9) age-matched controls were assessed in this retrospective study. Multiple linear measurements were taken to evaluate the bone thickness of the infrazygomatic crest region (IZCR), buccal alveolar bone, and inferior portion of …

Tensile Strength Of Elastomeric Ligature Ties Stretched Over Large And Small Orthodontic Brackets, Golden Shiloh

Master's Theses (2009 -)

Objective: The purpose of this research was to investigate whether or not the larger required stretch of elastomeric ligature ties to secure an orthodontic wire into a larger sized bracket would lead to a more significant loss in tensile strength than if a smaller bracket size was used that required less of a stretch for placement of the elastomeric ligature. Methods: Maximum tensile strengths of elastomeric ligature ties from American Orthodontics and Dentsply Sirona were measured and compared after incubation for 4 weeks at 37±1oC under the following conditions: Unstretched dry, unstretched in artificial saliva, stretched and tied over a …

Cad/Cam Milling Versus Rapid Prototyping Surgical Guide Techniques In Dental Implant Placement, Fardos N. Rizk Prof., Marwa Sabet Prof., Hebatallah Mohammed, Adham Elghamry

Dentistry

No abstract provided.

Efficacy Of Stem Cell Allograft In Maxillary Sinus Bone Regeneration: A Randomized Controlled Clinical And Blinded Histomorphometric Study, Josh Whitt, Mohanad Al-Sabbagh, Dolph R. Dawson Iii, Ehab Shehata, Moly Housley-Smith, Alejandro G. Villasante Tezanos, Ahmad Kutkut

Oral Health Practice Faculty Publications

Purpose: This study aimed to evaluate the quality and quantity of newly generated bone in the maxillary sinus grafted with stem cell-based allograft material.

Methods: This study was a single site, prospective, blinded, randomized, and controlled clinical trial. Eleven subjects with 18 edentulous posterior maxillary sites requiring sinus augmentation for delayed implant placement using a lateral window approach were enrolled. At the time of sinus augmentation, test sinus was grafted with stem cell-based allograft (Osteocel Plus; NuVasive Therapeutics), while the control sinus was grafted with conventional cortico-cancellous allograft (alloOss; ACE Surgical). Cone beam computer tomography (CBCT) scan was taken before …

Metal Additive Manufacturing For Fixed Dental Prostheses, Mai El Najjar

Electronic Thesis and Dissertation Repository

The use of additive manufacturing (AM) in dentistry has gained momentum in recent years. However, high initial costs and uncertainty surrounding the quality of AM products are considered barriers to their use. This research compared dental substructures fabricated by AM versus conventional casting and milling.

Cobalt-chromium alloy rectangular bars and three-unit bridge substructures were fabricated by AM, casting or milling. Bars manufactured by AM exhibited superior flexural strength, shear bond strength of porcelain coating, and Vickers hardness. Bridge substructures fabricated by AM showed similar flexural stiffness to cast, similar flexural loads at failure to milled and cast, and overall accuracy …

It's Time To Go Back To The Basics, Susan H. Davide

Publications and Research

Ultrasonic instrumentation is used today by many dental hygienists and dentists around the world. However, with the onset of the COVID-19 pandemic, dental procedures involving aerosol production are contraindicated, leading to the question, “Is it time to return to hand scaling?”

Burgeoning Polymer Nano Blends For Improved Controlled Drug Release: A Review, Saeid Maghsoudi, Bahareh Taghavi Shahraki, Navid Rabiee, Yousef Fatahi, Rassoul Dinarvand, Maryam Tavakolizadeh, Sepideh Ahmadi, Mohammad Rabiee, Mojtaba Bagherzadeh, Ali Pourjavadi, Hassan Farhadnejad, Mohammadreza Tahriri, Thomas J. Webster, Lobat Tayebi

School of Dentistry Faculty Research and Publications

With continual rapid developments in the biomedical field and understanding of the important mechanisms and pharmacokinetics of biological molecules, controlled drug delivery systems (CDDSs) have been at the forefront over conventional drug delivery systems. Over the past several years, scientists have placed boundless energy and time into exploiting a wide variety of excipients, particularly diverse polymers, both natural and synthetic. More recently, the development of nano polymer blends has achieved noteworthy attention due to their amazing properties, such as biocompatibility, biodegradability and more importantly, their pivotal role in controlled and sustained drug release in vitro and in vivo. These compounds …

Aptamer Hybrid Nanocomplexes As Targeting Components For Antibiotic/Gene Delivery Systems And Diagnostics: A Review, Navid Rabiee, Sepideh Ahmadi, Zeynab Arab, Mojtaba Bagherzadeh, Moein Safarkhani, Behzad Nasseri, Mohammad Rabiee, Mohammadreza Tahriri, Thomas J. Webster, Lobat Tayebi

School of Dentistry Faculty Research and Publications

With the passage of time and more advanced societies, there is a greater emergence and incidence of disease and necessity for improved treatments. In this respect, nowadays, aptamers, with their better efficiency at diagnosing and treating diseases than antibodies, are at the center of attention. Here, in this review, we first investigate aptamer function in various fields (such as the detection and remedy of pathogens, modification of nanoparticles, antibiotic delivery and gene delivery). Then, we present aptamer-conjugated nanocomplexes as the main and efficient factor in gene delivery. Finally, we focus on the targeted co-delivery of genes and drugs by nanocomplexes, …

Ada News - 06/15/2020, 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.

A "Leave Me Alone" Jaw Lesion, Galal Omami

Oral Health Practice Faculty Publications

No abstract provided.

Clinical Case-Based Problem-Solving Examination In Periodontics, Swati Y. Rawal, Arndt Guentsch

School of Dentistry Faculty Research and Publications

No abstract provided.

Accuracy, Sensitivity And Specificity Of Three Imaging Modalities In Detection Of Separated Intracanal Instruments, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: To compare the accuracy, sensitivity and specificity of CBCT imaging and two dimensional periapical radiography in detection of separated intracanal endodontic instruments with and without root canal filling. Methodology: Eighty (n=80) extracted mandibular molars were randomly divided into four groups (n=20); control, fracture/non-filled, non-fracture/filled, and fracture/filled. Molars were placed in a mandible for imaging. Conventional 2D radiography using D-speed periapical film (SKYDENT, Slovak Republic), semidirect digital radiographs using Soredex Digora Optime system (DIGORAOptime, Soredex, Finland), and cone beam computed tomography using Gendex-GXDP 800 (GENDEX GXDP-800 Kavo, Germany) were acquired. An artifact reduction algorithm was applied. Images were evaluated by …

The Association Between Mastication And Mild Cognitive Impairment In Korean Adults, Mi-Sun Kim Rdh, Bumjo Oh, Ji Won Yoo, Dong-Hun Han Dds

School of Medicine Faculty Publications

Currently, a few of studies revealed that there is an association between mastication and cognitive impairment. There is no study of Korean adult representative samples in relation to mastication and cognitive decline. This study was to investigate the relationship between mastication and mild cognitive impairment in Korean adults. A population-based cross-sectional study was conducted in which a total of 7029 subjects (2987 men and 4042 women) over 45 years old were surveyed from the Korea Longitudinal Study on Aging (KLoSA), Round 5th survey. Logistic regression analysis was performed for the study data controlling for confounding factors such as age, gender, …

In Vitro And In Vivo Effects Of Concentrated Growth Factor On Cells And Tissues, Fahimeh Tabatabaei, Zahra Aghamohammadi, Lobat Tayebi

School of Dentistry Faculty Research and Publications

This article reviews the biological outcome of the concentrated growth factor (CGF), a new platelet derivative used for tissue regeneration, in published articles related to the use of this product in basic and clinical studies. An electronic literature research using PubMed and SCOPUS was performed using combination of keywords: “concentrated growth factor” (OR “CGF”), AND “stem cells,” AND “cells” OR “cell proliferation” OR “cell migration” OR “cell differentiation,” AND “repair” OR “survival” OR “revitalization,” AND “tissue” OR “bone.” Forty-five articles that were published between 2012 and 2020 met the inclusion criteria. These studies have used CGF as fresh solid form, …

Comparison Of Dna Extracted From Pediatric Saliva, Gingival Crevicular Fluid And Site-Specific Biofilm Samples, Jason Emett, Roxanne David, Jaydene Mcdaniel, Steven Mcdaniel, Karl Kingsley

Dental Medicine Faculty Publications

(1) Introduction: Due to the non-invasive nature of saliva, many methods have been used to isolate and collect DNA from saliva samples for microbial screening. Many oral microbes also inhabit the oral biofilm, which may represent significantly different microbial constituents that may contribute to oral health and disease, including caries and periodontal disorders. Moreover, the biofilm may vary within the same patient at different sites. Few studies have evaluated the comparison between DNA isolated from saliva and DNA from site-specific biofilm, with virtually no studies addressing this analysis among pediatric patients. (2) Methods: An existing repository of paper point derived …

Commencement Program 2020 (School Of Dentistry), Loma Linda University

Commencement Programs

CONTENTS

2 | Message from the President

3 | Message from the Dean

4 | University History Highlights

6 | Candidates for Degrees