Dentistry Commons^™

Ada News - 12/08/2008, 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.

Contact Point, Arthur A. Dugoni School Of Dentistry

Contact Point

No abstract provided.

Enzastaurin, An Inhibitor Of Pkc Beta, Enhances Antiangiogenic Effects And Cytotoxicity Of Radiation Against Endothelial Cells., Aaron C. Spalding, Benjamin David Zeitlin, Kari Wilder-Romans, Mary Ellen Davis, Jacques E. Nör, Theodore S. Lawrence, Edgar Ben-Josef

All Dugoni School of Dentistry Faculty Articles

PURPOSE: Angiogenesis plays an important role in pancreas cancer pathobiology. Pancreatic tumor cells secrete vascular endothelial growth factor (VEGF), activating endothelial cell protein kinase C beta (PKC beta) that phosphorylates GSK3 beta to suppress apoptosis and promote endothelial cell proliferation and microvessel formation. We used Enzastaurin (Enz) to test the hypothesis that inhibition of PKC beta results in radiosensitization of endothelial cells in culture and in vivo. MATERIALS/METHODS: We measured PKC beta phosphorylation, VEGF pathway signaling, colony formation, and capillary sprout formation in primary human dermal microvessel endothelial cells (HDMECs) after Enz or radiation (RT) treatment. Microvessel density and tumor …

Comparison Of Mandibular Alveolar Bone With Facial Type Using Cbct, Jason M. Loop

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate the relationship between facial type and cortical bone thickness (mm), cortical bone density (rHU) and trabecular bone density (rHU) in the mandibular alveolar bone. Twenty-five consecutive dolichofacial, 25 consecutive mesiofacial, and 25 consecutive brachyfacial patients with T1 lateral cephalograms and CBCT scans were used in this study. A Ricketts analysis was used to compute the VERT index for each patient. All statistical analyses were performed at the significance level of α = 0.05. The one-way ANOVA and LSD post hoc tests indicated there was a statistically significant relationship between facial type and …

Buccal Bone Changes Following Rapid Maxillary Expansion (Rmf), Long-Term Results, Elena S. Iacob

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to use Cone Beam Computed Tomography (CBCT) images to quantitatively evaluate buccal bone changes of maxillary first premolar (P1), second premolar (P2) and first molar (M1) shortly after Rapid Maxillary Expansion (RME) and at the end of orthodontic treatment, as well as to evaluate the variables that may be associated with the short-term and long-term changes. Forty-seven consecutive patients (25 males and 22 females) with a mean age of 14.5years and who required RME as part of their orthodontic treatment and had pre-RME (T1) and post-RME (T2) CBCT images available were used for the …

Racial And Ethnic Disparities In Nontraumatic Dental-Condition Visits To Emergency Departments And Physician Offices In The Wisconsin Medicaid Program, Christopher Okunseri, Nicholas M. Pajewski, David C. Brousseau, Sandy Tomany-Korman, Andrew Snyder, Glenn Flores

School of Dentistry Faculty Research and Publications

Background

Nontraumatic dental condition (NTDC) visits occur in emergency departments (EDs) and physician offices (POs), but little is known about factors associated with NTDC visit rates to EDs and POs.

Methods

The authors analyzed all Medicaid dental claims in Wisconsin from 2001 through 2003 to examine factors associated with NTDC visits to EDs and POs. They performed bivariate and multivariable analyses. The independent variables they examined included race/ethnicity, age, sex, dental health professional shortage area (DHPSA) designation and urban influence code for county of residence.

Results

The authors evaluated 956,774 NTDC visits made during 1,718,006 person-years; 4.3 percent of visits …

Short-Term Clinical Evaluation Of Nobelreplace® Tapered Groovy Implant, Manouchehr Pouresmail

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this clinical investigation was to make comparisons and to achieve estimates of the short-term implant success, marginal bone resorption, and soft tissue responses around the immediately loaded NobelReplace® Tapered groovy implant (with groove on a rough collar portion) as compared to an implant without a groove on the collar (Replace®Select Tapered). This was a randomized controlled and prospective investigation in which subjects were consecutively included according to strict inclusion/exclusion criteria. Single stage procedure was used with immediate function. Seventeen subjects were recruited, and were randomly divided in two groups. Each group was received the predetermined type of …

Ada News - 11/17/2008, 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 - 11/03/2008, 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.

Altering Occlusal Vertical Dimension Provisionally With Base Metal Onlays: A Clinical Report, Soni Prasad, Jennifer Kuracina, Edward A. Monaco, Jr.

School of Dentistry Faculty Research and Publications

This article presents a method for altering occlusal vertical dimension (OVD) to restore dentitions with limited restorative space due to loss of tooth structure. A provisional increase in OVD is achieved using predominately base metal onlays, which offer advantages over conventional techniques. The onlays are resistant to wear, may be bonded well to nonrestored and restored tooth surfaces with resin cements, and provide a fairly reversible method of increasing OVD. A patient situation is presented which demonstrates the use of provisional base metal onlays in complete mouth rehabilitation.

A Comparison Of Cephalometric Analyses For Assessing Sagittal Jaw Relationship, Gul-E-Erum, Mubassar Fida

Section of Dental-Oral Maxillofacial Surgery

OBJECTIVE: To compare the seven methods of cephalometric analysis for assessing sagittal jaw relationship and to determine the level of agreement between them.

STUDY DESIGN: Cross-sectional, analytical study.

PLACE AND DURATION OF STUDY: Dental Section, the Aga Khan University Hospital, Karachi, from January to December 2004.

METHODOLOGY: Seven methods, describing anteroposterior jaw relationships (A-B plane, ANB, Wits, AXB, AF-BF, FABA and Beta angle) were measured on the lateral cephalographs of 85 patients. Correlation analysis, using Cramer's V-test, was performed to determine the possible agreement between the pair of analyses.

RESULTS: The mean age of the sample, comprising 35 males and …

Improving Oral Health In Pakistan Using Dental Hygienists, Musarrat Anjum Shah

Dental Hygiene Master's Papers and Projects

This document presents a review of the literature addressing education, healthcare, healthcare delivery and finance in Pakistan and the oral health status of the Pakistani people. Considering the enormous unmet oral health needs, the insufficient supply of dental professionals and the current unstructured dental hygiene curriculum in Pakistan, this document offers a mission, vision, and goals for the new dental hygiene theoretical framework for Pakistan. Moreover, it offers recommendations for competency-based dental hygiene education and practice, professional licensing, a practice act, and a dental hygiene scope of practice to help protect the welfare of the Pakistani public, i.e., increasing the …

Ada News - 10/20/2008, 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 - 10/06/2008, 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.

Unusual Ectopic Eruption Of A Permanent Central Incisor Following An Intrusion Injury To The Primary Tooth, Ebru Canoglu, Cenk Ahmet Akcan, Erdinç Baharoglu, H. Cem Güngör, Zafer C. Cehreli

School of Dentistry Faculty Research and Publications

Intrusive luxation of primary teeth carries a high risk of damage to underlying permanent tooth germs. Ectopic eruption of permanent incisors is an unusual outcome of traumatic injury to their predecessors. In this case report, we describe the multidisciplinary management of the consequences of a primary tooth intrusion that led to severe ectopic eruption of the permanent left central incisor in a horizontal position at the level of the labial sulcus.

A Technique For Duplicating A Fixed Complete Denture, Soni Prasad, Edward A. Monaco, Jr.

School of Dentistry Faculty Research and Publications

The fixed implant prosthesis often requires repair due to fracture and/or wear of acrylic resin teeth. Repair of such a prosthesis, although simple, requires retaining the prosthesis to be revised in the laboratory. In order to reveneer the implant prosthesis, a provisional restoration should be fabricated for the patient that provides similar function and esthetics. This article presents a technique for duplicating the existing fixed implant-supported prosthesis prior to repair/reveneer, thus providing a smooth transition from the provisional to the definitive prosthesis.

Effect Of Phosphate Group Addition On The Properties Of Denture Base Resins, Gaurav Puri, David W. Berzins, Virendra B. Dhuru, Periathamby A. Raj, Sameer K. Rambhia, Gunjan Dhir, Andrew R. Dentino

School of Dentistry Faculty Research and Publications

Statement of problem

Acrylic resins are prone to microbial adherence, especially by Candida albicans. Surface-charged resins alter the ionic interaction between the denture resin and Candida hyphae, and these resins are being developed as a means to reduce microbial colonization on the denture surface.

Purpose

The purpose of this study was to investigate the physical and mechanical properties of phosphate-containing polymethyl methacrylate resins for their suitability as a denture material.

Material and methods

Using PMMA with cross-linker (Lucitone 199) as a control, 4 experimental groups containing various levels of phosphate with and without cross-linker were generated. The properties examined …

The Performance Of Human Papillomavirus High-Risk Dna Testing In The Screening And Diagnostic Settings, Marylou Cárdenas-Turanzas, Graciela M Nogueras-Gonzalez, Michael E Scheurer, Karen Adler-Storthz, J L Benedet, J Robert Beck, Michele Follen, Scott B Cantor

Journal Articles

OBJECTIVE: We sought to evaluate the performance of the human papillomavirus high-risk DNA test in patients 30 years and older.

MATERIALS AND METHODS: Screening (n=835) and diagnosis (n=518) groups were defined based on prior Papanicolaou smear results as part of a clinical trial for cervical cancer detection. We compared the Hybrid Capture II (HCII) test result with the worst histologic report. We used cervical intraepithelial neoplasia (CIN) 2/3 or worse as the reference of disease. We calculated sensitivities, specificities, positive and negative likelihood ratios (LR+ and LR-), receiver operating characteristic (ROC) curves, and areas under the ROC curves for the …

Muscle Activity Comparisons In Dental Hygiene Students When Using Different Fulcrums While Scaling, Susan L. Tolle, Mary Elizabeth Cosaboom, Michele L. Darby, Martha L. Walker

Dental Hygiene Faculty Publications

The high incidence rate of cumulative trauma disorders in dental hygienists attests to the musculoskeletal problems experienced by dental hygienists. Research is ongoing to investigate ergonomic practices that will minimize muscle trauma when providing scaling and root debridement. The purpose of this study was to determine differences in the activity of four forearm muscles, (extensor carpi radialis longus, flexor carpi ulnaris, biceps brachii and pronator teres) when using five different finger fulcrums while scaling in dental hygiene students. A convenience sample of 29 consenting senior dental hygiene students participated in the study. Using a 4 x 5 counterbalanced research design, …

Ada News - 09/15/2008, 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.

Expanding Circle Of Inhibition: Small-Molecule Inhibitors Of Bcl-2 Asanticancer Cell And Antiangiogenic Agents, Benjamin David Zeitlin, Isaac J. Zeitlin, Jacques E. Nör

All Dugoni School of Dentistry Faculty Articles

The specific targeting of diseases, particularly cancer, is a primary aim in drug development, as specificity reduces unwelcome effects on healthy tissue and increases drug efficacy at the target site. Drug specificity can be increased by improving the delivery system or by selecting drugs with affinity for a molecular ligand specific to the disease state. The role of the prosurvival Bcl-2 protein in maintaining the normal balance between apoptosis and cellular survival has been recognized for more than a decade. Bcl-2 is vital during development, much less so in adults. It has also been noted that some cancers evade apoptosis …

An In-Vitro Investigation Of The Physical Properties Of Alginate Alternatives, Rishi Dinesh Patel

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate the detail reproduction, gypsum compatibility and linear dimensional change of three recently introduced irreversible hydrocolloid (alginate) alternatives. The materials that were tested are Position Penta Quick® (3M ESPE™), Silgimix® (Sultan Dental) and Alginot® (Kerr™). These materials were tested in accordance with ANSI/ADA Specification No. 18 for Alginate Impression Materials and No. 19 for Dental Elastomeric Impression materials. The irreversible hydrocolloid impression material Jeltrate Plus antimicrobial® (Dentsply Caulk™) served as the control.

MATERIALS AND METHODS: The ADA specification die was used to undertake the testing of the new materials. The parameters of detail …

The Dilemma Of The Open Gingival Embrasure Between Maxillary Central Incisors, Orlando Motohiro Tanaka, Bruno D'Aurea Furquim, Renata Correa Pascotto, Gerson Luiz Ulema Ribeiro, Jose A. Bosio, Hirushi Maruo

School of Dentistry Faculty Research and Publications

Aim: The aim of this report is to present the etiology, diagnosis, and treatment planning strategy in the presence of an open gingival embrasure between the maxillary central incisors.

Background: The open gingival embrasure or “black triangle” is a visible triangular space in the cervical region of the maxillary incisors. It appears when the gingival papilla does not completely fill in the interdental space. The space may occur due to: (1) disease or surgery with periodontal attachment loss resulting in gingival recession; (2) severely malaligned maxillary incisors; (3) divergent roots; or (4) triangular-shaped crowns associated with or without periodontal problems …

Myositis Ossificans Circumscripta Of The Buccinator Muscle: First Report Of A Rare Complication Of Mandibular Third Molar Extraction, Raymond L Wiggins, David Thurber, Kenneth Abramovitch, Jerry Bouquot, Nadarajah Vigneswaran

Journal Articles

No abstract provided.

Orthodontic Mini-Implant Failure: Assessing The Relationship To Bone Quality Using Qcbct, Joshua Schneider

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate the cortical bone thickness (mm), cortical bone density (HU), and trabecular bone density (HU) of mini-implants sites in both the maxilla and mandible using QCBCT to determine if they had any effect on mini-implant failure rate. Patient characteristics (age, gender, facial type), mini-implant characteristics (date of placement, manufacturer, length, and diameter), and the mini-implant site (region) were also evaluated. One hundred and six mini-implants in 50 consecutive patients with complete patient records, CBCT information, and T1 radiographs were included in the study. Thirty-four of the 106 mini-implants were considered "failures" resulting in …

The Comparative Radiopacity Between Primary And Permanent Teeth, Robert C. Lee

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: This in vitro study compared the radiopacity between human primary and permanent enamel and dentin. It also compared the radiopacity between human anterior and posterior teeth.

Methods: Extracted primary and permanent teeth were used in this study. One mm enamel and one mm dentin slices were cut from each extracted tooth. Radiographs were taken of each enamel and dentin specimen 1 mm in thickness along with an aluminum step-wedge using procedures specified in International Standards Organization (ISO) 4049:2000. A densitometer was used to measure the Optical Density (OD) of the radiographs of the specimen and the accompanying aluminum step-wedge. …

Assessment Of Psychosocial Impact Of Dental Aesthetics, Munizeh Khan, Mubassar Fida

Section of Dental-Oral Maxillofacial Surgery

OBJECTIVE: To assess the psychosocial impact of dental aesthetics using the 'Psychosocial Impact of Dental Aesthetics Questionnaire' (PIDAQ) and self-rated Aesthetic Component (AC) of the Index of Orthodontic Treatment Need (IOTN).

STUDY DESIGN: Cross-sectional study.

PLACE AND DURATION OF STUDY: Dental Section, the Aga Khan University Hospital, Karachi, from August to September 2006.

METHODOLOGY: Adults with no prior orthodontic treatment were asked to complete a modified version of the 'Psychosocial Impact of Dental Aesthetics Questionnaire' (PIDAQ). A total of four variables including 'Dental Self-confidence', 'Social impact', 'Psychological impact' and 'Perceived orthodontic treatment need' were assessed by a series of statements, …

Characterization Of Rhbmp-2 Induced Heterotopic Bone Subjected To Distraction Osteogenesis, Anne J. Yoon

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to characterize and analyze the heterotopic bone regenerate which formed following implantation of recombinant human bone morphogenetic protein-2 (rhBMP-2) and to determine by epi-illumination, x-ray photometry and histology, if there is increased and sustained osteogenic potential present with distraction osteogenesis of this heterotopic bone. While many previous studies have documented the osteogenic potential of BMP-2, no study to date has shown the results of application of force on this ectopic bone. Our study included three control rats (non-expansion) and six experimental rats (expansion). Of the control rats, #76 (a pilot study rat) had already …

Recognizing A Dysfunctional Swallowing Pattern Using Surface Electromyography (Semg), Michelle F. Couto

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: The purpose of this study was to determine if a surface electromyography (sEMG) assessment of swallowing is better at identifying Oral Muscular Dysfunction (OMD) than a clinical evaluation (observation & digital palpation) of swallowing. The assessment was conducted on children ages 9 to 17, who were patients at the Orthodontic Department at Loma Linda University, School of Dentistry. Additionally, the prevalence of a “perceived” swallowing dysfunction was assessed.

Methods: This study included 39 randomly selected subjects from the orthodontic patients at Loma Linda University. Each subject’s “dry” swallow was evaluated using two separate methods: (a) sEMG and (b) digital …

Cephalometric Analysis Using Magnetic Resonance Imaging, Wade A. Williams

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: The purpose of this study was to determine if T1-weighted 3D magnetic resonance images performed at 3.0 Tesla could be used to conduct routine orthodontic cephalometric analysis.

Methods: Three cranial imaging methods were compared using sixteen non-growing subjects (10 male and 6 female) who were not claustrophobic, did not have any metallic restorations on the distal of first molars, had no medical implants and the female subjects were not pregnant. Sagittal cranial images were produced by three methods: (1) a digital lateral cephalometric (LC) radiograph (Orthophos XG Plus, Sirona^TM, Bensheim, Germany), (2) a 12-inch FOV cone beam …