Dentistry Commons^™

Compare Two Methods Of Dental Arch Length Measurements On Digital Dental Models, Ying-Chen Chen, Carol Yi-Hsuan Chen, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Purpose: Accurate space discrepancy evaluation is important in treatment planning. Straight-line segments and brass wire method are the most common methods in arch length assessment. However, using segments causes underestimation, while more reliable brass wire method shows lower reproducibility. The aim of our study is (1) to compare the difference between conventional segmental distance method (SD) and a new method, ideal arch form (IA), and (2) to assess the reproducibility and reliability of two methods by means of digital models. Materials and methods: Thirty sets of digital dental models presented full permanent dentition and Angle’s Class III malocclusion were included. …

Evaluation Of Patients’ Experiences After Microimplant-Assisted Rapid Palatal Expansion (Marpe) Treatment, Huei-Rou Tsai, Kwok-Hing Ho, Chih-Wei Wang, Kai-Long Wang, Shun-Chu Hsieh, Heng-Ming Chang

Taiwanese Journal of Orthodontics

Purpose: Various microimplant- assisted rapid palatal expansion (MARPE) appliances were developed in these years. By applying this procedure, maxillary transverse deficiencies can be corrected in adults with limited dental tipping. However, some undesirable effects could happen during treatment. In this study, we aimed to record the incidence of any adverse effect or complication. Pain score was also measured during treatment. Patients and Methods: Twenty-nine patients (22.8 ± 8.6 years old) with 13 males and 16 females were enrolled. Clinical photographs, radiographs and cone-beam computed tomography were taken before insertion of MARPE and after expansion. Interview was conducted by one orthodontist …

Etiology, Development, Diagnosis And Considerations In Treatment Of The Class Ii, Division 2 Malocclusion: What The Clinician Should Know About This Malocclusion (Part I), Ib Leth Nielsen

Taiwanese Journal of Orthodontics

The Class II Division 2 malocclusion has puzzled a great many orthodontists over the years. How does it develop and how does it get its characteristic appearance? What are the etiological factors that lead to the typical arrangement of the front teeth? How should we treat it? These are just a few of the many questions that still need answers. In this article we will discuss the etiology and development of this malocclusion and in Part II provide some guidelines for timing and correction of the Class II, Div. 2 malocclusion that are applicable to most cases. We shall also …

Streptococcus Mutans Lacking Sufcdsub Is Viable, But Displays Major Defects In Growth, Stress Tolerance Responses And Biofilm Formation, Kassapa Ellepola, Xiaochang Huang, Ryan P. Riley, Jacob P. Bitoun, Zezhang Tom Wen

School of Dentistry Faculty Publications

Streptococcus mutans appears to possess a sole iron-sulfur (Fe-S) cluster biosynthesis system encoded by the sufCDSUB cluster. This study was designed to examine the role of sufCDSUB in S. mutans physiology. Allelic exchange mutants deficient of the whole sufCDSUB cluster and in individual genes were constructed. Compared to the wild-type, UA159, the sufCDSUB-deficient mutant, Δsuf::kanr, had a significantly reduced growth rate, especially in medium with the absence of isoleucine, leucine or glutamate/glutamine, amino acids that require Fe-S clusters for biosynthesis and when grown with medium adjusted to pH 6.0 and under oxidative and nitrosative stress conditions. Relative to UA159, Δsuf::kanr …

Molecular Screening And Analysis Reveal Novel Oral Site-Specific Locations For The Cariogenic Pathogen Scardovia Wiggsiae, Steven Mcdaniel, Jaydene Mcdaniel, Katherine M. Howard, Karl Kingsley

Dental Medicine Faculty Research

Introduction: Scardovia wiggsiae (SW) is a newly identified cariogenic pathogen associated with severe early childhood caries and oral disease. New studies have confirmed the presence of this organism among clinical samples from both pediatric and adult patients. However, the recent discovery of this organism has left researchers with only limited information available regarding the prevalence of this organism—and virtually no information regarding oral site-specific locations. Based upon this lack of information, the overall objective of this study was to perform an oral site-specific analysis of SW prevalence from clinical samples. Methods: Using an approved human subjects protocol, samples (n = …

Ada News - 06/14/2021, 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.

Assessment Of Microrna (Mir)-365 Effects On Oral Squamous Carcinoma Cell Line Phenotypes, Jeffery Coon, Karl Kingsley

Dental Medicine Faculty Research

miR-365 is a microRNA that regulates transcription and has been demonstrated to promote oncogenesis and metastasis in some cancers while suppressing these effects in others. Virtually no information is known about the presence or function of miR-365 in oral cancers. Based upon this information, the primary goal of this project was to evaluate the expression of miR-365 in existing oral cancer cell lines. Five commercially available oral cancer cell lines (SCC4, SCC9, SCC15, SCC25, and CAL27) were obtained and cultured. RNA was then screened by PCR using primers specific for miR-365, as well as matrix metalloproteinase (MMP-2) and a downstream …

Microbial Screening Reveals Oral Site-Specific Locations Of The Periodontal Pathogen Selenomonas Noxia, Jaydene Mcdaniel, Steven Mcdaniel, Beanca Jhanine Samiano, Matthew Marrujo, Karl Kingsley, Katherine M. Howard

Dental Medicine Faculty Research

Introduction: Selenomonas noxia (SN) is an important periodontal pathogen, associated with gingivitis and periodontitis. Many studies have found associations between SN and indicators of poor health outcomes, such as smoking, low socioeconomic status and obesity. However, less is known about the prevalence of this organism and more specifically about other oral site-specific locations that may harbor this organism. Methods: Using an existing patient repository (n = 47) of DNA isolated from saliva and other oral sites (n = 235), including the dorsum of the tongue, lower lingual incisor, upper buccal molar and gingival crevicular fluid (GCF), molecular screening for SN …

Immunotherapies For Neurodegenerative Diseases, Ibrahim Mortada, Raymond Farah, Sanaa Nabha, David M. Ojcius, Youssef Fares, Wassim Y. Almawi, Najwane S. Sadier

All Dugoni School of Dentistry Faculty Articles

The current treatments for neurodegenerative diseases are mostly symptomatic without affecting the underlying cause of disease. Emerging evidence supports a potential role for immunotherapy in the management of disease progression. Numerous reports raise the exciting prospect that either the immune system or its derivative components could be harnessed to fight the misfolded and aggregated proteins that accumulate in several neurodegenerative diseases. Passive and active vaccinations using monoclonal antibodies and specific antigens that induce adaptive immune responses are currently under evaluation for their potential use in the development of immunotherapies. In this review, we aim to shed light on prominent immunotherapeutic …

Longitudinal Curricular Assessment Of Knowledge And Awareness Of Intimate Partner Violence Among First-Year Dental Students, Charles Buchanan, Karl Kingsley, Rhonda J. Everett

Dental Medicine Faculty Research

Background: Intimate partner violence (IPV) has previously been recognized as a major public health issue. Oral healthcare providers, such as dentists, are crucial to the screening and identifying of individuals experiencing IPV, since most injuries occur in the head and neck region. A lack of knowledge and awareness regarding teaching and learning about IPV in dental school curricula has been identified. Based upon the overall lack of knowledge, the objective of this study was to conduct a longitudinal assessment of knowledge, awareness, and beliefs regarding IPV among dental students in their first year of education. Methods: All students (n = …

Commencement Program 2021 (School Of Dentistry), Loma Linda University

Commencement Programs

CONTENTS

1 | Message from the President

2 | 2021 Events of Commencement

4 | University Administration

5 | Significance of Academic Regalia

8 | Criteria for Institutional Awards

10 | Loma Linda University Health and Loma Linda University Honorees

23 | The Program, The School Honorees, and The Speaker

26 | Candidates for Degrees

41 | The Dental Pledge

42 | Awards

Maxillofacial Prosthodontists Are Needed For The Rehabilitation Of Patients With Congenital And Acquired Craniofacial Defects, Syed Murtaza Raza Kazmi, Farhan Raza Khan

Section of Dental-Oral Maxillofacial Surgery

No abstract provided.

Does Alcohol Consumption Protect Against Late Dental Implant Failures?, Brian R. Carr, William J. Boggess, John F. Coburn, Peter Rekawek, Sung Kiang Chuang, Neeraj Panchal, Brian P. Ford

School of Dentistry Faculty Publications

Purpose: Social factors have been implicated in the development of peri-implant pathologies, including implant failure. This study aims to investigate whether alcohol consumption affects late dental implant failures. Methods: A retrospective cohort study evaluated implants placed between 2006 and 2012 at the Philadelphia Veterans Affairs Medical Center. The primary predictor variable was alcohol consumption, measured as nonconsumption and mild, moderate, and heavy consumption. The primary outcome variable was late dental implant failure. Univariate, bivariate, and multivariate statistics were applied, with P <.05 used to define statistical significance. Results: Our cohort consisted of 103 patients and 295 implants with a 5-year minimum follow-up. Most patients were male (93%) with an average age of 60 at the time of implant placement. Late implant failure was associated with 30 implants. Compared to nonconsumption, mild consumption was associated with a 75% decrease in late implant failure (P =.0494), moderate consumption was associated with a 60% decrease (P =.3826), and heavy consumption was associated with a 200% increase (P <.1782). Compared to mild consumption, heavy consumption was associated with an 847% increase in late failure (P =.0135). Conclusions: Results from this retrospective cohort analysis suggest that mild alcohol consumption is associated with a decrease in late dental implant failures.

N Y State Dent J June-July 2021

The New York State Dental Journal

The New York State Dental Journal (NYSDJ) is produced by the New York State Dental Association (NYSDA) six times a year, in January, March, April, July, September and November. Each issue features clinical and scientific articles written by researchers and practitioners from around the globe and is subject to review by a panel of specialists convened by the Editor.

Issues include cover and feature articles alongside regular columns with regional news impacting the New York membership including editorial and perspectives columns, legal, association activities, component news, continuing education opportunities, and classifieds.

J Mich Dent Assoc June 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:

• A cover story “Team-Based Treatment of Oral Cancer: The U-M Experience”.
• A feature article, “Dental Management of the Head and Neck Cancer Patient Treated with Radiation Therapy: Update 2021”.
• A feature article on “Understanding Cyber Threats and the Risk they Pose to Your Practice”.
• "A Train-the-Trainer Education Model and Rural Dental Opioid Prescribing Outcomes”, a …

The Acquisition Of Dental Competencies And Clinical Skills: Perceptions From Students, Faculty, Practicing Dentists And Industry Professionals In The Dominican Republic, Laura Virginia Reyes Alardo

Dissertations

The Dominican healthcare system faces many challenges, and dental education is not an exception. The lack of competencies established for dentistry is one of the most critical challenges that dentistry faces. There is no way to guarantee that all dentists receive the same quality education with no standards and lack of competencies. Previous research has revealed that the competencies achieved by dental students determine the way such students develop their professional practice in the future as dental graduates (Alcota, De Gauna, & González, 2016). However, there is a lack of shared language observed in dental education around the world. Not …

A 3-Year Retrospective Study Of Traumatic Dental Injuries To The Primary Dentition, Beste Özgür, Gizem Erbaş Ünverdi, H. Cem Güngör, Dennis J. Mctigue, Paul S. Casamassimo

School of Dentistry Faculty Research and Publications

Background/Aims

Traumatic dental injuries (TDIs) in the primary dentition are a significant public health problem, which has been neglected worldwide. Despite its high prevalence, limited studies address this injury. The aim of this study was to determine the characteristics and treatment modalities of TDIs affecting primary teeth, along with accompanying medical co-morbidities and attendance at follow-up appointments.

Material and Methods

This retrospective analysis included all TDIs affecting primary teeth from January 2014 to January 2017. Data abstraction included demographics, time lapse prior to arrival at hospital, trauma etiology, classification of TDIs, soft tissue and supporting bone injuries, medical co-morbidities, emergency …

Microfluidic-Assisted Fabrication Of Reverse Micelle/Plga Hybrid Microspheres For Sustained Vascular Endothelial Growth Factor Delivery, Meisam Omidi, Luis Eduardo Almeida, Lobat Tayebi

School of Dentistry Faculty Research and Publications

In this study, poly (d, l-lactide-co-glycolide) (PLGA) composite microspheres containing anhydrous reverse micelle (R.M.) dipalmitoylphosphatidylcholine (DPPC) nanoparticles loaded vascular endothelial growth factor (VEGF) were produced using microfluidic platforms. The VEGF-loaded R.M. nanoparticles (VRM) were achieved by initial self-assembly and subsequent lipid inversion of the DPPC vesicles. The fabricated VRMs were encapsulated into the PLGA matrix by flow-focusing geometry microfluidic platforms. The encapsulation efficiency, in vitro release profile, and the bioactivity of the produced composite microspheres were investigated. The release study showed that VEGF was slowly released from the PLGA composite microspheres over 28 days with a reduced initial burst (18 …

Mesenchymal Chondrosarcoma Simulating A Periodontal Disease: A Case Report, Adham Fahmy, Abanoub Selim, Yara Youssef, Iman Mostafa, Hala El-Kammar

Future Dental Journal

Mesenchymal chondrosarcoma (MCS) is a rare high-grade variant of chondrosarcoma. MSC`s represent about 1% to 9% of chondrosarcomas. Less than 500 cases of MCS have been reported in literature, so far. As opposed to other variants, MSC develops outside of the bone in almost third of the cases. Pain and swelling are the most common symptoms at presentation. The overall prognosis of MSC is poor, with frequent distant metastases. Histopathologically, MCS typically exhibits a biphasic pattern consisting of both small cells, and islands of atypical cartilage. The immunohistochemical profile of this lesion overlaps with several other entities. Resection with wide …

Evaluation Of Mucograft® In Increasing The Peri-Implant Soft Tissue Thickness In The Esthetic Zone., Sarah Gamal Moussa, Nivine Ibrahim Ragy, Khaled Abdel Ghaffar

Future Dental Journal

Objective: To study the effect of Collagen matrix Mucograft (CM) in enhancing the soft tissue thickness around immediate implants (II) in comparison to palatal connective tissue grafts (SCTG).

Subjects & methods: This randomized, controlled clinical trial included 16 patients, who were randomly divided into test (IIP +CM) and control (IIP+SCTG) groups. Clinical parameters evaluated at baseline, 3-months, and 6-months were papillary bleeding index (PBI), gingival index (GI), facial probing depth (FPD), palatal probing depth (PPD). Direct measurements of gingival thickness were evaluated at baseline and 6-months follow up. Pink esthetic score (PES) and white esthetic score (WES) were evaluated at …

Influence Of Leucocyte Platelet Rich Fibrin (L-Prf) On Guided Tissue Regeneration Using Perforated Membrane (Randomized Clinical Trial), Mariam Samir Nabih, Nivine Ibrahim Ragy, Waleed Abbas Nada, Ahmed Youssef Gamal

Future Dental Journal

Background: Passage of gingival fibroblasts/gingival mesenchymal stem cells through macro-perforated barrier membranes may allow them to contribute positively in periodontal regeneration. The present study was designed to evaluate the effect of use of Leucocyte Platelet Rich Fibrin (L-PRF) on periosteum-derived stem/ progenitor cells (PDPCs) and gingival mesenchymal stem cells (GMSCs) encouraging their passage through membrane perforations. Methods: twenty patients were randomly allocated into two equal groups; Group I perforated membrane (PM): included intrabony defects treated by perforated membranes. Group II Leucocyte-platelet rich fibrin + perforated membrane (L-PRF + PM): included intrabony defects treated by Leucocyte platelet rich fibrin & perforated …

Effect Of Different Surface Treatments On Bond Strength To Tetragonal And Cubic Zirconia, Mohamed Mahmoud Abdelnaby, Moustafa Nabil Aboushelib, Ossama Saleh Abdelghany, Amr El-Etreby

Future Dental Journal

Background: Dental zirconia has been widely used due to its superior mechanical properties. However, traditional etching techniques and surface treatments are generally ineffective on zirconia surfaces due to its inertness and lack of a silica phase. Hence, various surface treatments are applied to improve bonding to zirconia.

Objectives: The aim of this study was to evaluate the effect of three different surface treatments: low pressure air borne particle abrasion, selective infiltration etching and fusion sputtering on bond strength to both Tetragonal zirconia and Cubic zirconia.

Materials and Methods: Ninety two specimens of zirconia were used in this study. Two of …

Evaluation Of Dentin Micro-Hardness And Antibacterial Efficiency Against E.Faecalis After Irrigation With Sodium Hypochlorite Followed By Either Grape Seed Extract Or Edta: A Randomized In -Vitro Study, Yasmeen S. Mahmoud, Dalia A. Saba, Taheya A. Moussa

Future Dental Journal

Objectives: Evaluation of dentin micro-hardness, dentinal erosion and antibacterial efficiency against E.faecalis after irrigation with sodium hypochlorite (NaOCl) followed by grape seed extract (GSE)solution versus irrigation with NaOCl followed by EDTA.

Materials and Methods: Regarding dentin micro-hardness test; 16 teeth were divided into 2 groups; intervention (5.25%NaOCl+13%GSE) and comparator (5.25%NaOCl+17%EDTA) groups. Each tooth was decoronated and sectioned vertically. Dentin microhardness was evaluated before and after irrigation at the coronal, middle and apical thirds. Representative specimens from the micro-hardness test were used for dentin surface examination using scanning electron microscope (SEM). For the evaluation of the antibacterial efficiency, 18 teeth were …

Assessment Of Efficacy Of Photoactivated Disinfection Versus Calcium Hydroxide Disinfection In Regeneration Of Immature Infected Teeth - A Comparative In Vivo Study., Kholoud Mohamed Emam, Kariem El-Batouty Professor At Endodontic Department, Mohamed Mokhtar Nagy Ass. Professor At Endodontic Department

Future Dental Journal

Aim: To study the effectiveness of photo activated disinfection (PAD) Disinfection Versus Calcium Hydroxide Disinfection in Regeneration of Immature Infected Teeth. Material and Methods:30 patients with immature, single rooted teeth appearing with or without signs and/or symptoms of periapical pathology were involved in the study. Cases were classified into three groups according to the disinfection protocol, ten patients each group (n=10). Group I: Calcium hydroxide (Ca (OH)) was injected in the canal after drying the canal with sterile paper points. Group II: Photosensitizers (Azulenocyanine) was inserted in the canals and agitated in the canal, then activated with diode …

Maintaining Root Canal Curvatures After Preparation With Different Nickel-Titanium Rotary Systems (A Comparative In Vitro Study), Wael Betbout, Mohammad Al Shammaa, Roula S. Abiad

BAU Journal - Creative Sustainable Development

The ongoing advancement of materials and methods for root canal instrumentation is resulting in improved techniques with minimal variations to the canal morphology. One standard for assessment of the shaping quality of curved root canals is preparation-induced straightening of the canal. The aim of the study: To compare the effects of 2 Nickel-Titanium rotary systems, 2Shape (Micro-Mega, Besançon, France) and ProTaper Next (Dentsply,Sirona, Ballaigues, Switzerland), on maintaining the distobuccal canals curvature of extracted human maxillary molar teeth using periapical radiographs. Materials and methods: In this study a total of 26 distobuccal roots of upper maxillary molars were used and divided …

Laser-Assisted Tooth Extraction In Patients With Impaired Hemostasis, Elena Larionova Dr., Ekaterina Diachkova Dr., Elena Morozova Prof., Albert Davtyan Dr., Svetlana Tarasenko Prof.

BioMedicine

Introduction: The provision of efficient dental care to patients with hemostatic disorders is tied to difficulties and problems such as prolonged bleeding after or during surgical manipulation.

Aim: This study aims to increase the efficiency of oral surgery in patients with thrombocytopenia with the use of erbium laser on different stages of tooth extraction.

Methods: Patients (n = 96) were selected for tooth extraction on an outpatient basis: patients with confirmed thrombocytopenia (age 44 ± 15.4, 19–74) were included in the 1st group, and patients without impaired hemostasis (age 47.6 ± 15.3, 19¬81) were included in the …

Reprogramming Oral Epithelial Keratinocytes Into A Pluripotent Phenotype For Tissue Regeneration, Fayrouz Bazina, Sabine M. Brouxhon, Stephanos Kyrkanides

Center for Oral Health Research Faculty Publications

OBJECTIVES: We set out to reprogram adult somatic oral epithelial keratinocytes into pluripotent cells for regenerative dentistry.

SETTING AND SAMPLE POPULATION: Immortalized murine oral keratinocyte cell (IMOK) line raised from adult mouse mucosa were cultured in vitro in our studies.

MATERIALS AND METHODS: Adult murine oral epithelial keratinocytes were chronically treated with TGF-β1 in vitro, and the expression of Oct4, Nanog, Sox2 and Nestin, as well as specific homeobox Gata and Pax gene family members were investigated.

RESULTS: We documented the induction of stem factors linked with pluripotency and/or the maintenance and regulation of stem-cell self-renewal in oral epithelial keratinocytes …

Tissue Reaction To Novel Customized Calcium Silicate Cement Based Dental Implants. A Pilot Study In The Dog, Amir Fakhrzadeh, Mohammad A. Saghiri, Steven M. Morgano, Andrew Sullivan

All Dugoni School of Dentistry Faculty Articles

Objectives: The purpose of this study was to determine the level of periodontal tissue regeneration in a canine model following post-extraction placement of an implant molded from a composite material made from extracted tooth dentin and a calcium silicate cement (CSC) material. The investigation used autologous dentin in conjunction with a CSC material to form a composite implant designed for immediate tooth replacement. Methods: Two (2) beagles had a periodontal and radiographic examination performed to rule out any pre-treatment inflammation, significant periodontal disease, or mobility. Then, ination eleven (11) teeth were extracted and polyvinyl siloxane molds were made to fabricate …

Efficacy Of Hand Instrumentation Vs Power Instrumentation, Khrystyna Vyprynyuk, Annie Chitlall

Publications and Research

Dental hygienists face many challenges as they practice during a global pandemic. The strict implementation of a variety of new infection control guidelines needed to prevent the transmission of SARS-CoV-2 has changed the way many oral health professionals practice. On June 9, 2020, the American Dental Association’s (ADA) Advisory Task Force on Dental Practice Recovery issued guidelines that included the preferred use of hand instrumentation over ultrasonic instrumentation for plaque and calculus removal to reduce aerosol production.

As many clinicians are accustomed to using power instrumentation during periodontal therapy, this article will examine the effectiveness of hand instrumentation in the …

International Journal Of Dentistry, Ahmed Hamdy, Dalia Ghalwash, Waleed M. Abbas, Hala K. Abd El Gaber

Dentistry

Objectives. This study aimed to clinically assess and compare the width of peri-implant keratinized mucosa following the use of a readymade plastic stent with apically repositioned flap versus conventional apically repositioned flap with papillary sparing incisions during single-stage implant placement protocol. Materials and Methods. A total of 20 patients were enrolled in this study. In the test group, a prefabricated implant-retained stent was clipped on the healing abutment after implant surgery to reposition the keratinized tissue buccoapically. In the control group, simple interrupted sutures were applied instead of using a stent. After the surgical procedure, the width of …