Medicine and Health Sciences 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 …

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 …

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 …

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.

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 …

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 …

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.

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.

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 …

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 …

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.

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.

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 …

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 …

Effects Of Coupling Agents And Storage Times On Transverse Strength Of Acrylic Resin With Glass Fiber Reinforcement, Prapaporn Homjunjeerung, Issarawan Boonsiri

Chulalongkorn University Dental Journal

Objective To determine the effects of two different coupling agents and storage times on transverse strength of acrylic resin with glass fiber reinforcement. Materials and methods Eighty test specimens (2x2x25 mm) made of chemically activated acrylic resin were divided into four groups: (A) no fibers; (B) non-impregnated glass fibers; (C) silane impregnated glass fibers and (D) titanate impregnated glass fibers. The specimens in group B-D were reinforced with 10% volume of glass fibers which were oriented parallel to the long axis and positioned in the center of the specimen. Each group was subdivided to store in distilled water for 7 …

Bottle-Using Behaviors In A Group Of Bangkok Preschool Children, Keswadee Subsandee, Supaporn Chongvisal, Napaporn Kittitavornkul, Nantajit Wangprasertkul

Chulalongkorn University Dental Journal

Objective To study the bottle-using behaviors in a group of preschool children in Bangkok, Thailand. Materials and methods The sample consisted of 970 preschool children aged 1-6 years old from one kindergarten in Bangkok. Parents/caregivers completed self-administered questionnaires including information related to demographic data, the childrenûs bottle using or weaning status and the parentsû attitudes towards bottle using. Results Out of 824 questionnaires returned (85%), 605 were valid (73.4%). Results showed that 58.2% (352/605) of children (age 2.6 ± 0.9 years) still used a feeding-bottle while 41.8% (253/605) already weaned from bottle (age 4.2 ± 1.2 years). The mean age …

Study Of Sewage Water Quality In The Faculty Of Dentistry, Chulalongkorn University, Piboon Kirdphoksap, Pravej Serichetaphongse, Em-On Benjavongkulchai, Suphot Phattanasri, Pichaya Rachdawong, Wannadara Intarapanya, Jantarawan Tancharoen

Chulalongkorn University Dental Journal

Objective To investigate the quality of sewage water, the amounts of heavy metals, and the environmental effects of the dental substances, chemicals, and hazardous substances within the Faculty of Dentistry, Chulalongkorn University, which has not enough data. As a consequence, the study results will be used as a considering factor in the system-designing project for sewage water treatment, along with assigning the way of usage, storage and disposal of chemicals and hazardous substances. Materials and methods This present study was conducted by random sampling the sewage water, wastewater and fresh water at ten locations within the peak periods of the …

Cross-Cultural Adaptation Of The Professional Role Orientation Inventory For Thai Dentists, Chanchai Hosanguan

Chulalongkorn University Dental Journal

Objectives The objectives of this research are to cross-culturally adapt the Professional Role Orientation Inventory for Thai dentists and to evaluate the equivalence between the original and Thai versions. Materials and methods Cross-cultural adaptation of the Professional Role Orientation Inventory was performed according to an international guideline including the following steps: forward translation, reconciliation, back-translation, expert panel review, and pilot testing with a group of 13 dentists. Results The cross-cultural adaptation procedure revealed no major problems. Findings of panel review suggested that the original and Thai versions were semantically, conceptually, and culturally equivalent. Results of pilot test demonstrated clarity and …

Disintegration In Water Of A Newly Developed Zinc Oxide-Calcium Sulfate Based Temporary Filling Material, Supatchara Boonyawee, Janejira Thirawat, Niyom Thamrongananskul

Chulalongkorn University Dental Journal

Objective To develop zinc oxide calcium sulfate based temporary filling material with less disintegration in water. Materials and methods Four formulas of temporary filling materials were prepared by altering the ratio of calcium sulfate and zinc oxide. Cavit was used as a control group. Twenty specimens from each group were tested to find the mean percentage of disintegration in each group. One-way ANOVA and Bonferroni multiple comparison were used to analyze data. Results The mean percentages of disintegration of the newly developed temporary filling materials were 8.884 ± 0.789, 4.930 ± 1.157, 3.629 ± 1.039 and 10.594 ± 1.097 in …

The Compressive Strength And Flexural Strength Of Self Adhesive Resin Cements, Natchanan Withayajeakkhajorn, Chaiwat Maneenut

Chulalongkorn University Dental Journal

Objective To study the compressive strength and flexural strength of self-adhesive resin cements and compare to those of conventional resin cement Materials and methods Compressive and flexural strengths of three self-etching resin cements [Rely X U100 (3M ESPE), Maxcem (Kerr), Multilink sprint (Ivoclar vivadent)] were determined and compared to those of conventional resin cement [Variolink II (Ivoclar vivadent)], using ISO 9917/2003 and ISO 4049/2000 regimens. The data were statistically analyzed using one-way ANOVA at p = 0.05. Results Mean compressive strengths of all cements were between 213.42 ± 3.74 and 278.82 ± 30.96 MPa. Variolink II showed the highest strength …

Effect Of Diameter And Length Of Fiber Post On Failure Resistance Of Endodontically Treated Teeth Restored With Post And Core, Sirirat Ananviriyaporn, Prarom Salimee

Chulalongkorn University Dental Journal

Objectives To study the failure resistance of root canal treatment (RCT) teeth restored with post and core using different diameters and lengths of fiber posts. Materials and methods Thirty maxillary central incisors were divided into 3 groups. After RCT-treated, spaces for post were prepared with drill #2. All groups were restored with fiber post (D.T. light-post). The first group was restored with the size that properly fit the canal (post #2). The second group used the post with the same canal length but smaller diameter (post #1). The third group used the post that shorter than the canal length but …

In Vitro Effect Of Calcium Hydroxide Combined With Chlorhexidine Or Stannous Fluoride In Reducing Candida Albicans In Human Root Canal, Siripen Wanasaengsakul, Chalermkwan Puworawan, Tipapun Setsirisombat, Karnnapat Peetiakarawach

Chulalongkorn University Dental Journal

Objective To evaluate the effectiveness of calcium hydroxide combined with chlorhexidine or stannous fluoride in disinfecting the Candida albicans infected human root canal in vitro. Material and Methods Antifungal effect of reagents was examined by using agar-diffusion test and counting colony forming unit of C. albicans existed in the root canal after 7 days intracanal medication. Acid-base changing of chemical agents was also examined. Results Three types of calcium hydroxide pastes could inhibit the growth of Candida on Sabouraud dextrose agar, although the statistical differences among them were not found. The pH of calcium hydroxide pastes were all more than …