Alignment Of Cervical Vertebrae And Reliability Of Cephalometric Measurements, Ece Agirgol

Theses & Dissertations

Cervical vertebrae are in close relationship with dentofacial structures due to their anatomical position. In previous studies, the inclination of cervical vertebrae was measured by mostly Nasion-Sella line as the reference plane to evaluate the relationship with dentofacial structures.

The aim of this study is to observe the correlation between cervical vertebrae inclination and lateral cephalometric measurements. 124 lateral cephalograms taken in Natural Head Position of subjects over 18 years of age were traced with Dolphin Imaging Software 11.95 Premium. Cervical vertebrae inclination was measured by using the lines passing from landmarks on second, third and forth cervical vertebrae. Correlation …

Attenuating Effect Of Vitamin E Against Silver Nano Particles Toxicity In Submandibular Salivary Glands, Mahmoud Bakr, Mahmoud Al Ankily, Sara M. Shogaa, Mohamed Shamel

Dentistry

Open AccessArticle

Attenuating Effect of Vitamin E against Silver Nano Particles Toxicity in Submandibular Salivary Glands

Tooth Position Determination By Automatic Cutting And Marking Of Dental Panoramic X-Ray Film In Medical Image Processing, Yen-Cheng Huang, Chiung-An Chen, Tsung-Yi Chen, He-Sheng Chou, Wei-Chi Lin, Tzu-Chien Li, Jia-Jun Yuan, Szu-Yin Lin, Chun-Wei Li, Shih-Lun Chen, Yi-Cheng Mao, Patricia Angela R. Abu, Wei-Yuan Chiang, Wen-Shen Lo

Department of Information Systems & Computer Science Faculty Publications

This paper presents a novel method for automatic segmentation of dental X-ray images into single tooth sections and for placing every segmented tooth onto a precise corresponding position table. Moreover, the proposed method automatically determines the tooth’s position in a panoramic X-ray film. The image-processing step incorporates a variety of image-enhancement techniques, including sharpening, histogram equalization, and flat-field correction. Moreover, image processing was implemented iteratively to achieve higher pixel value contrast between the teeth and cavity. The next image-enhancement step is aimed at detecting the teeth cavity and involves determining the segment and points separating the upper and lower jaw, …

Ada News - 12/13/2021, 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.

Comparative Analysis Of 3d Printed Denture Resins With Traditional Denture Materials At The Micro Level, Aneeza Hussain, Caleb Beckwith, Gaffar Gailani

Publications and Research

The aim of this experiment was to evaluate and identify compression strength between traditionally manufactured acrylic dentures and additive manufacturing resin dentures. Specifically, the dentures produced by Uhler Dental, its Reveal line were compared against samples produced on the Formlabs Form 2 SLA, Stereolithography, 3D printer using their Denture Teeth A2 resin to test compression strength to assure they are compatible with the occlusal forces in the oral cavity. Using the ZwickRoell tensile testing machine, it appeared that the acrylic dentures were half as strong as the resin dentures. Then we went ahead to and did a comparative analysis under …

Pour Me Some Polyphenols, Sara Dupont, Sadie Garceau, Sydney Jones, Debra Chalmers

Dental Hygiene Student Research Posters

Polyphenols have a positive impact on the overall health of the oral cavity. They can be found in different drinks that are plant-based such as tea, coffee or products containing cocoa. They can be found in plant-based foods like fruits and vegetables. Polyphenols are able to reduce the cariogenic process is what makes them have such an importance in oral health. They play a role in systemic health. The studies provided evidence that polyphenols are able to reduce caries in individuals who are frequently consuming them.

Effects Of Vaping Nicotine Vs Traditional Cigarette Smoking On Periodontal Patients, Rachel Pion, Brianna Fontes, Megan Robert, Debra Chalmers

Dental Hygiene Student Research Posters

Vaping is becoming increasingly popular as an attempt to decrease traditional smoking. Chemicals found in cigarettes are known to be harmful to the periodontium. Nicotine, found in both inhalants, is a vasoconstrictor that causes a reduction in the inflammatory response. This leads to less bleeding and gingival crevicular fluid (GCF) flow in those that smoke cigarettes versus those that vape. Due to e-cigarettes new prevalence, additional research is required to understand its long-term effects on periodontitis.

Root Canals Shaped By Nickel-Titanium Instrumentation With Automated Computerized Numerical Control Systems, Liming Wang, Wenxiang Li, Yeon Jee Yoo, Shin Hye Chung, Soram Oh, Hiran Perinpanayagam, Kee Yeon Kum, Yu Gu

Dentistry Publications

Background: To investigate the efficacy of a nickel-titanium (NiTi) file with an automated computerized numerical control (CNC) system for root canal shaping. Methods: The movement of the automated device and the insertion angle were investigated. In Experiment 1, simulated resin root canals were randomly divided into four groups (n = 20): manual downward movement using a handpiece (Group 1), vertical downward movement by CNC (Group 2), reciprocating up and down movement by CNC (Group 3), and spiral up and down movement by CNC (Group 4). In Experiment 2, five different insertion angles of the NiTi file were evaluated (n = …

A Closer Look At The Aha's Antibiotic Prophylaxis Guidelines, Dora-Ann Oddo

Publications and Research

In May 2021, the American Heart Association (AHA) updated its antibiotic prophylaxis guidelines for the prevention of infective endocarditis (IE). As some dental and dental hygiene procedures may increase the risk of this potentially life-threatening infection in at-risk patients, oral health professionals must have a thorough understanding of this serious, albeit rare infection of the heart and understand appropriate precautions for treatment. This article focuses on the AHA's guidelines; however, oral health professionals should also consider the IE guidelines from the American Academy of Orthopedics Surgeons.

J Mich Dent Assoc December 2021

The Journal of the Michigan Dental Association

Every month, The Journal of the Michigan Dental Association brings news, information, and features about Michigan dentistry to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this issue, the reader will find the following original content:

• Two cover stories presenting perspectives from both ends of the practice life continuum: “Starting Your Practice Life” and “Preparing for Retirement”.
• A feature article, “What Happened in Vegas Became ADA Policy”.
• A feature article, “An Oversight Corrected: 2020 MDA Life Members Recognized”.
• The 2021 Author/Title Index to the Journal of the Michigan Dental Association. …

Host Defence Peptides In Diabetes Mellitus Type 2 Patients With Periodontal Disease. A Systematic Review, Muhammad Saad Shaikh, Muhammad Sohail Zafar, Farhan Saleem, Ahmad Alnazzawi, Mohid Abrar Lone, Syed Jawad Ali Bukhari, Zohaib Khurshid

Research outputs 2014 to 2021

The aim of the study was to critically assess and review the latest evidence relating the associations between host defence peptides (HDPs), periodontal diseases (PD) and diabetes mellitus type 2 (DM2). To explore studies on HDPs, periodontal disease, and DM2, researchers utilised specific key phrases to search the electronic databases PubMed (National Library of Medicine), Embase (Ovid), Medline (EBSCO), and Dentistry and Oral Sciences (EBSCO). Quality assessment was conducted by means of the Newcastle Ottawa scale and the Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE) tool. Following a thorough screening process, a total of 12 papers (4 case‐control, 6 …

The Effect Of Omega-3 Polyunsaturated Fatty Acids On Periodontal Inflammation In Rats, Hardev M. Singh

Loma Linda University Electronic Theses, Dissertations & Projects

Aim: The aim of this study was to evaluate any possible beneficial effects of omega-3 polyunsaturated fatty acids (Ω-3 PUFAs) as a dietary supplement when incorporated into the diet of rats that had periodontitis induced via a ligature model.

Materials and Methods: 20 male rats (Sprague Dawley) were divided into 2 groups as following: 1) Control group with ligature-induced periodontitis and no Ω-3 PUFA in the diet; and 2) Test group with ligature-induced periodontitis and Ω-3 PUFA introduced in the diet. The ligature was placed around the mandibular first molars in the gingiva sulcus for a period of …

A Comparison Of Traditional Orthodontic Polishing Systems With Composite Polishing Systems Following Orthodontic Debonding, Elizabeth A. Melvin, Qingzhao Yu, Xiaoming Xu, Camille G. Laird, Paul C. Armbruster, Richard W. Ballard

School of Public Health Faculty Publications

Introduction: At the completion of treatment, the orthodontic practitioner's goal is to effectively remove all traces of adhesive and return enamel to its initial state. With the advent of new polishing systems being released each year, there may be one product that is superior to others. Aim: The purpose of this study is to determine the efficacy of new polishing systems (in the last 5–10 years) used in general dentistry on enamel surface roughness following debond utilizing profilometery and scanning electron microscopy and compare them to established orthodontic polishing systems results. Methods: Fifty-two mandibular incisors were randomly assigned to one …

Evaluation Of Usage-Induced Degradation Of Different Endodontic File Systems, Shekhar Bhatia, Venkateshbabu Nagendrababu, Ove A. Peters, Amr Fawzy, Umer Daood

All Dugoni School of Dentistry Faculty Articles

To evaluate structural profiles and mechanical behaviour of WaveOne Gold (WOG), Twisted File Adaptive (TFA) and XP-endo shaper (XPS) instruments after root canal preparation. Standardized in vitro shaping was performed in presence of 5.25% sodium hypochlorite. File morphology was analyzed using scanning electron microscopy; X-ray diffraction analysis was performed before and after use along with Raman spectroscopy. Nanoindentation was carried out to characterize surface topography. Ni2+ release was measured at 1, 3, 5 and 7 days. X-ray photoelectron spectroscopy (XPS) analysis was done before and after use. After allocating scan line shifts like in WOG, mechanical deformation was shown using …

Differential Involvement Of The Canonical And Noncanonical Inflammasomes In The Immune Response Against Infection By The Periodontal Bacteria Porphyromonas Gingivalis And Fusobacterium Nucleatum, Kívia Queiroz De Andrade, Cassio Luiz Coutinho Almeida-Da-Silva, David M. Ojcius, Robson Coutinho-Silva

All Dugoni School of Dentistry Faculty Articles

We examined the involvement of the P2 × 7 receptor and the canonical and noncanonical inflammasomes in the control of single-species or dual-species infection by the periodontal bacteria Porphyromonas gingivalis and Fusobacterium nucleatum in cells and mice. Stimulation of the P2 × 7 receptor leads to activation of the canonical NLRP3 inflammasome and activation of caspase-1, which leads to cleavage of pro-IL-1β to IL-1β, a key cytokine in the host inflammatory response in periodontal disease. The non-canonical inflammasome pathway involves caspase-11. Thus, wildtype (WT), P2 × 7^−/−, caspase-11^−/− and caspase-1/11^−/− mice were co-infected with both bacterial …

Online Learning During Covid-19 Produced Equivalent Or Better Student Course Performance As Compared With Pre-Pandemic: Empirical Evidence From A School-Wide Comparative Study, Meixun S. Zheng, Daniel Bender, Cindy Lyon

All Dugoni School of Dentistry Faculty Articles

Background: The COVID-19 pandemic forced dental schools to close their campuses and move didactic instruction online. The abrupt transition to online learning, however, has raised several issues that have not been resolved. While several studies have investigated dental students’ attitude towards online learning during the pandemic, mixed results have been reported. Additionally, little research has been conducted to identify and understand factors, especially pedagogical factors, that impacted students’ acceptance of online learning during campus closure. Furthermore, how online learning during the pandemic impacted students’ learning performance has not been empirically investigated. In March 2020, the dental school studied here moved …

A Small Molecule Produced By Lactobacillus Species Blocks Candida Albicans Filamentation By Inhibiting A Dyrk1-Family Kinase, Jessie Macalpine, Martin Daniel-Ivad, Zhongle Liu, Junko Yano, Nicole M. Revie, Robert T. Todd, Peter J. Stogios, Hiram Sanchez, Teresa R. O’Meara, Thomas A. Tompkins, Alexei Savchenko, Anna Selmecki, Amanda O. Veri, David R. Andes, Paul L. Fidel, Nicole Robbins, Justin Nodwell, Luke Whitesell, Leah E. Cowen

School of Dentistry Faculty Publications

The fungus Candida albicans is an opportunistic pathogen that can exploit imbalances in microbiome composition to invade its human host, causing pathologies ranging from vaginal candidiasis to fungal sepsis. Bacteria of the genus Lactobacillus are colonizers of human mucosa and can produce compounds with bioactivity against C. albicans. Here, we show that some Lactobacillus species produce a small molecule under laboratory conditions that blocks the C. albicans yeast-to-filament transition, an important virulence trait. It remains unexplored whether the compound is produced in the context of the human host. Bioassay-guided fractionation of Lactobacillus-conditioned medium linked this activity to 1-acetyl-β-carboline (1-ABC). We …

Stress And Anxiety Experience Of Dental Hygiene Students, Kristen Ford

Electronic Theses and Dissertations

The ETSU dental hygiene program is very competitive and rigorous for those admitted. Student dental hygienists may experience higher levels of anxiety and more stressors while completing their course work and clinical hours than they have previously experienced in general education and prerequisite courses. These increased number of stressors and higher levels of anxiety may have negative impacts on students’ academic performance and success in clinical learning environments. A better understanding of the actual need for a stress reduction and anxiety management curriculum will facilitate creating and implementing this type of curriculum. A total of 44 current ETSU dental hygiene …

Nmr Spectroscopy-Based Metabolomics Of Platelets To Analyze Brain Tumors, Shivanand Pudakalakatti, Alessandra Audia, Anirudh Mukhopadhyay, José S Enriquez, Dontrey Bourgeois, Nabihah Tayob, Niki M Zacharias, Steven W Millward, Daniel Carson, Mary C Farach-Carson, Frederick F Lang, Amy B Heimberger, Krishna P Bhat, Pratip K Bhattacharya

Faculty, Staff and Student Publications

"Tumor-educated platelets" have recently generated substantial interest for the diagnosis of cancer. We hypothesized that tumor educated platelets from patients with brain tumors will reflect altered metabolism compared to platelets from healthy volunteers. Here, in a pilot study, we have employed nuclear magnetic resonance (NMR) spectroscopy in platelets from brain tumor patients to demonstrate altered metabolism compared to the platelets obtained from healthy volunteers.

A Comparison Between The Effect Of Different Pressures Of Air Particle Abrasion Before And After Sintering With And Without Zirconia Liner On Bond Strength Of Resin To Zirconia Surface, Lina Mohamad Saadeh, Ehab A. Farghaly, Mohammad M. Rayyan, Essam Osman

BAU Journal - Creative Sustainable Development

This study aimed to compare the effect of different pressures of air particle abrasion 2 and 4 bars before and after sintering with and without zirconia liner on SBS of resin to zirconia Surface. Materials and Methods: 54 zirconia cuboids 8×8×3 mm were milled and divided into 6 equal groups (N=9) according to surface treatment; sintered with ceramic liner application and 2 bars pressure (SL2) and with 4 bars pressure (SL4), sintered with no ceramic liner and 2 bars pressure (SN2) and 4 bars pressure (SN4), unsintered with no ceramic liner and 2 bars pressure (UN2) and 4 bars pressure …