Dentistry Commons^™

Ada News - 12/13/2010, 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.

Comments On "Transcriptional Profiling Of Oral Squamous Cell Carcinoma Using Formalin-Fixed Paraffin-Embedded Samples" By Saleh Et Al., Oral Oncol 46 (2010) 379-386 Reply, Rosnah Binti Zain

Prof. Dr. Rosnah Binti Zain

Dear Editor, We thank Rentoft and colleagues for commenting on our paper “Transcriptional profiling of oral squamous cell carcinoma using formalin-fixed paraffin-embedded samples”, and agreeing that formalin-fixed paraffin embedded (FFPE) tissue specimens can be used for gene expression studies using microarrays, to identify genes that are significantly involved in oral carcinogenesis. The similarities and high concordance between the study by Rentoft et al. [1] and ours [2] is comforting and clearly supports the use of FFPE tissues in such experiments. More importantly, these studies act as independent validation for one another and strongly suggests that genes that were found to …

Ada News - 11/15/2010, 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.

Effect Of Low-Dose Aspirin Or Calcium Supplementation On The Incidence Of Pre-Eclampsia Among Pregnant Women, Philadelphia University

Philadelphia University, Jordan

No abstract provided.

Admission Systems To Dental School In Europe: A Closer Look At Flanders, Tine Buyse, Filip Lievens, L. Martens

Research Collection Lee Kong Chian School Of Business

Dental education in Europe faces enormous challenges. One deals with the admission to dental school. Although admission procedures vary considerably across Europe, a characteristic of some systems is that the same procedure is used across students who will ultimately pursue different majors (medical or dental). This is based on the assumptions that there is no significant difference in these students' scores and that the requirements for medicine and dentistry are equal. This study examines these assumptions in the admission exam 'Medical and Dental Studies' in Flanders. Students who pass may choose whether they start medical or dental education. Over an …

Ada News - 11/01/2010, 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 - 10/18/2010, 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 - 10/04/2010, 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.

Explorer, Fall 2010, College Of Dental Medicine

Newsletters

No abstract provided.

Compensating Associates For Supervising Dental Hygiene Production In U.S. General Dental Practices: A Discussion Of A Frequently Taboo Topic, David G. Dunning, Brian M. Lange, Robert Madden

Journal Articles: College of Dentistry

Many associateship employment contracts in U.S. general dental practice, probably about 85% based on our review of over 100 contracts in the past decade, are silent about a key issue in associateships-- namely, compensating associates for supervising dental hygiene production. Not addressing this issue raises ethical questions as well as concerns about professional liability regarding the supervision of dental hygiene. The associate and owner need to include in an employment agreement what compensation will be given to the associate for supervising dental hygiene production. Compensating associates for supervising dental hygiene production will certainly have a …

Different Treatment Modalities In Free End Saddle Cases, Fardos N. Rizk

Dentistry

No abstract provided.

A Comparative Evaluation Of Locator Versus Ball And Socket Attachment In Implant Retained Mandibular Overdenture Cases Using Cbct, Fardos N. Rizk, Marwa Sabet Prof., Amany Elhadary, Wael Amer

Dentistry

No abstract provided.

Ada News - 09/20/2010, 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.

Thermo-Mechanical Stress In Multilayered Dental Post Due To Temperature Gradient, Noor Hayaty Abu Kasim Abu Kasim N.H.

Noor Hayaty Abu Kasim Abu Kasim N.H.

Objective: To analyse thermo-mechanical stress in endodontically treated teeth restored with Multilayered Structured Dental Posts (MSDPs) under cold and hot conditions using Finite Element Analysis (FEM). Methods: Three MSDPs of multilayer design of xTi-yHA composition added to a zirconia layer (model A), an alumina layer (model B) and a titanium layer (model C) were compared with zirconia (model D) and titanium (model E) posts. The fractions of Ti and HA was varied gradually. Changes in temperature of an endodontically restored tooth model were calculated as a result of hot and cold response. The resulting thermo-mechanical stresses were analysed and compared …

Trail, Dr5 And Caspase 3-Dependent Apoptosis In Vessels Of Diseased Human Temporomandibular Joint Disc. An Immunohistochemical Study, Carla Loreto, Luis Eduardo Almeida, M. R. Migliore, M. Caltabiano, Rosalia Leonardi

School of Dentistry Faculty Research and Publications

To evaluate the apoptosis involvement in the angiogenesis as a self-limiting process in patients with temporomandibular joint (TMJ) degenerated disc vessels, we assessed, by immunohistochemistry, the detection of TRAIL, its death receptor DR5 and caspase 3. TRAIL, its death receptor DR5 and caspase 3 expression were studied by immunohistochemistry in 15 TMJ discs displaced without reduction and in 4 unaffected discs. These apoptosis molecules were detected in the intima and media layers of newly formed vessels affected discs. In conclusion, vessels apoptosis activation in TMJ disc with ID could be regarded as a self-limiting process that try to leads to …

Ada News - 09/06/2010, 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.

Hiv-1 Reactivation Induced By The Periodontal Pathogens Fusobacterium Nucleatum And Porphyromonas Gingivalis Involves Toll-Like Receptor 2 And 9 Activation In Monocytes/Macrophages, Octavio A. Gonzalez, Mengtao Li, Jeffrey L. Ebersole, Chifu B. Huang

Center for Oral Health Research Faculty Publications

Although oral coinfections (e.g., periodontal disease) are highly prevalent in human immunodeficiency virus type 1-positive (HIV-1⁺) patients and appear to positively correlate with viral load levels, the potential for oral bacteria to induce HIV-1 reactivation in latently infected cells has received little attention. We showed that HIV-1 long terminal repeat (LTR) promoter activation can be induced by periodontopathogens in monocytes/macrophages; nevertheless, the mechanisms involved in this response remain undetermined. Since Toll-like receptor 2 (TLR2), TLR4, and TLR9 activation have been involved in HIV-1 recrudescence, we sought to determine the role of these TLRs in HIV-1 reactivation induced by …

Genetic Polymorphisms And Risk Of Oral Cancer, Zaini Z. M., Karen-Ng L. P., Cheong S. C., Gurdeep S. M., Yuen K. M., Tay K. K., Jalil N., Ismail S. M., Jallaluddin A., Rosnah Binti Zain

Prof. Dr. Rosnah Binti Zain

Objectives: This study was done to investigate the role of single nucleotide polymorphisms(SNPs) within genes of phase I (CYP1A1) and phase II (GSTM1, GSTT1,GSTP1) of the xenobiotic metabolism and its association with oral cancer risk.Methods: An unmatched case-control study was conducted using 207 newly diagnosed oral cancer patients and 117 non-cancer subjects selected from the OCRCC database. Peripheral blood was obtained from consented individuals and the CYP1A1, GSTM1, GSTT1 and GSTP1 genotypes were determined using polymerase chain reaction (PCR) and restriction enzyme digestion (RFLP). Simple and multiple logistic regression yielding odds ratio (OR and aOR) were employed to measure the …

Facial Type Analysis Comparison Between Mri, Cbct, And Lateral Cephalometrics, Matthew A. Sanders

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Single Cephalometric measurements are comparable between Cone Beam Computed Tomography (CBCT), Magnetic Resonance Imaging (MRl) and Conventional Lateral Cephalometric (LC) imaging methods. This study evaluated the agreement between the three imaging methods in facial type analysis (using a composite of 5 cephalometric measures).

Methods and Materials: Twenty-two subjects participated in this study. Cranial images were generated via three modalities: LC, CBCT and MRl. Cephalometric landmarks were identified on the three images per subject and a facial type analysis performed. An equally weighted facial type calculation composed of 5 cephalometric measurements (facial axis, facial depth, mandibular plane, lower face height, …

Work Of Fracture In Ceramic Bracket Bonding Systems, Tye A. Roylance

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Work of fracture (WOE) is a method of analysis of the toughness or resilience of a bracket bonding system. It is an indication of a bracket bonding systems ability to withstand forces in the mouth below the force at which failure occurs. Work of fracture gives an indication of how much abuse the bracket/bonding system can withstand and still maintain an adequate adhesion to the tooth surface. This analysis incorporates shear bond strength and displacement and is determined in part by the elasticity and resilience of the specimen being studied.

Materials and Methods: One hundred and eighty bovine teeth …

Soft Tissue Grafting To Improve Implant Esthetics, Moawi M. Kassab

School of Dentistry Faculty Research and Publications

Dental implants are becoming the treatment of choice to replace missing teeth, especially if the adjacent teeth are free of restorations. When minimal bone width is present, implant placement becomes a challenge and often resulting in recession and dehiscence around the implant that leads to subsequent gingival recession. To correct such defect, the author turned to soft tissue autografting and allografting to correct a buccal dehiscence around tooth #24 after a malpositioned implant placed by a different surgeon. A 25-year-old woman presented with the chief complaint of gingival recession and exposure of implant threads around tooth #24. The patient received …

Clinical–Pathological Conference: Case 2, Nasser Said-Al-Naief, Molly S. Rosebush, Denis P. Lynch

School of Dentistry Faculty Research and Publications

No abstract provided.

Variability Of Arch Forms In Various Vertical Facial Patterns, Nabila Anwar, Mubassar Fida

Section of Dental-Oral Maxillofacial Surgery

OBJECTIVE: To compare arch forms in various vertical facial patterns and to make arch form guides based on posterior intermolar widths.

STUDY DESIGN: Cross-sectional comparative study.

PLACE AND DURATION OF STUDY: The Aga Khan University Hospital, Karachi, from June 2007 to May 2008.

METHODOLOGY: Subjects with age range of 13-30 years were selected having full complement of teeth (upto second permanent molars) with absence of severe crowding (less than 7 mm). Exclusion criteria were presence of dental anomalies, previous dentoalveolar surgery, trauma or orthodontic treatment and craniofacial syndromes. One hundred subjects including 40 normodivergent, 30 hypodivergent and 30 hyperdivergent cases …

Comparison Of Non-Surgical And Surgical Endodontic Retreatment: A Systematic Review, Robert Corr

Loma Linda University Electronic Theses, Dissertations & Projects

Primary root canal therapy has been shown to be a predictable procedure with a high degree of success ^1-4, however failures can occur after treatment. Treatment options for the preservation of teeth that have had previous endodontic treatment but demonstrate persistent disease include non-surgical (orthograde) or surgical (retrograde) endodontic retreatment, assuming the tooth is restorable, periodontally sound, and the patient desires to retain the tooth. The purpose of this study was to conduct a systematic review of the current available evidence to compare the clinical and radiographic outcomes of nonsurgical with those of surgical endodontic retreatment. Methodology began with …

Correlating The Slope Of The Vomer With Cephalometric Vectors Of Facial Growth, Ryan Michael Pulfer

Loma Linda University Electronic Theses, Dissertations & Projects

It is important for orthodontists to have a basic understanding of the growth and development of the face. Scott's nasal septal cartilage theory proposes that the cartilage of the nasal septum proliferates along the anterior slope of the vomer bone by interstitial growth, simultaneously pulling and displacing the maxilla downward and forward. It is therefore logical to conclude that the vector of nasomaxillary growth has a geometric correlation with the anterior slope of the vomer bone.

There are no published studies comparing either the anterior or posterior slope of the vomer with any lateral cephalometric landmarks, the vectors of nasomaxillary …

Microct Study Of Critical-Sized Defects Restored With A New Rhbmp-2 Carrier, Joanne S. Kim

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Regenerating bone in critical-sized maxillofacial osseous defects remains a challenge. The utilization of recombinant human bone morphogenetic protein-2 (rhBMP-2) to form new bone has been shown to be a promising alternative to autogenous bone grafts, and the development of a carrier matrix to effectively deliver the rhBMP-2 has been identified as the critical factor necessary for the successful clinical application of rhBMP-2. The objective of this study was to perform a microCT analysis to examine the density of reconstructed bone using different rhBMP-2 carriers in critical-sized defects.

Material and Methods: Critical-sized defects (approximately 2.5 cm) were created in the …

Effects Of Orthodontic Treatment On Social Perceptions, Sherry A. Caraveo

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: The purpose of this study was to record first impressions elicited by photographs of orthodontic patients before and after treatment to test the hypothesis that after treatment patients will elicit a more positive first impression.

Methods and Materials: Before (Tl) and After (T2) photographs of six orthodontic patients equally divided by gender and standardized for background facial attractiveness were selected. Three different malocclusions were represented: 1) Class 1 crowded, 2) Class 11 div 1, and 3) Class 111. 108 college students rated each photographed patient on three attributes: physical attractiveness, intelligence and social desirability. Participants recorded their responses on …

Creating Prediction Models For Obstructive Sleep Apnea Based On Gender, Jeffrey Hwang

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Obstructive sleep apnea (OSA) is a common chronic disorder that is characterized by repetitive episodes of airflow cessation or reduction occurring during sleep as a result of partial or complete upper airway obstruction. These recurrent events have a tremendous impact on the cardiovascular system with a multitude of dangerous consequences. Numerous studies have been conducted determining etiological risk factors for OSA including anatomical predictors which have been observed with multiple imaging techniques. Cone beam computed tomography (CBCT) is a low-radiation mode of imaging that can be used to accurately identify anatomical landmarks and measure craniofacial relationships and airway dimensions. …

องค์ประกอบทางเคมีและคุณสมบัติทางกายภาพของพอร์ตแลนด์ซีเมนต์สีขาวที่ผลิตในประเทศไทยที่มีบิสมัทออกไซด์เมื่อผสมด้วย แคลเซียมคลอไรด์และเมททิลเซลลูโลส, ปุณยวีร์ วีระโสภณ, อัญชนา พานิชอัตรา

Chulalongkorn University Dental Journal

วัตถุประสงค์ เพื่อศึกษาองค์ประกอบทางเคมีและคุณสมบัติทางกายภาพของพอร์ตแลนด์ซีเมนต์สีขาวที่ผลิตในประเทศไทยที่มีบิสมัยออกไซด์เมื่อผสมกับแคลเซียมคลอไรด์และเมททิลเซลลูโลส เปรียบเทียบกับ พอร์ตแลนด์ซีเมนต์สีขาวที่มีบิสมัยออกไซด์ผสมด้วยน้ํากลั่น และไวท์โปรรูทเอ็มทีเอผสมด้วยน้ํากลั่น วัสดุและวิธีการ เตรียมพอร์ตแลนด์ซีเมนต์สีขาวที่ผลิตในประเทศไทยจากสองบริษัทที่มีบิสมัทออกไซด์ผสมด้วย น้ํากลั่นหรือของเหลวที่มีสารเร่งการแข็งตัว (สารละลายที่มีร้อยละ 5 ของแคลเซียมคลอไรด์ และร้อยละ 1 ของ เมททิลเซลลูโลส) และไวท์โปรรูทเอ็มทีเอผสมด้วยน้ํากลั่น กลุ่มละ 10 ตัวอย่าง ตรวจสอบองค์ประกอบทางเคมี ของซีเมนต์ที่แข็งตัวแล้วด้วยการวิเคราะห์การเลี้ยวเบนรังสีเอ็กซ์ ศึกษาลักษณะสัณฐานวิทยาด้วยกล้องจุลทรรศน์อิเลคตรอนชนิดส่องกราด วัดความเป็นกรดด่าง ระยะเวลาแข็งตัว ความทึบรังสี ความทนแรงอัด และสภาพละลายได้ วิเคราะห์ผลการทดลองด้วยสถิติความแปรปรวนแบบทางเดียว (p < 0.05) ผลการศึกษา ไวท์โปรรูทเอ็มทีเอผสมด้วยน้ํากลั่นและพอร์ตแลนด์ซีเมนต์สีขาวที่มีบิสมัยออกไซด์ผสมด้วยน้ํากลั่นหรือผสมด้วยแคลเซียมคลอไรด์และเมททิลเซลลูโลสมีองค์ประกอบทางเคมีคล้ายคลึงกัน ยกเว้นไวท์โปรรูทเอ็มทีเอ จะมีผลึกละเอียด โดยไม่พบอนุภาคขนาดใหญ่ และมีอนุภาคของแคลเซียมไฮดรอกไซด์ปะปนอยู่เล็กน้อย ความเป็นกรดด่างของซีเมนต์ทุกชนิดเพิ่มขึ้นอย่างรวดเร็วในช่วงแรก ไวท์โปรรูทเอ็มทีเอจะมีความเป็นด่างสูงที่สุด(12.07) เมื่อซีเมนต์แข็งตัวเต็มที่ พอร์ตแลนด์ซีเมนต์ที่ผสมด้วยแคลเซียมคลอไรด์และเมททิลเซลลูโลสจะมีความเป็นด่างสูงกว่าพอร์ตแลนด์ซีเมนต์ที่ผสมด้วยน้ํากลั่นอย่างมีนัยสําคัญ ซีเมนต์ที่ผสมด้วยแคลเซียมคลอไรด์และเมท ทิลเซลลูโลสจะมีเวลาการก่อตัวที่สั้นกว่า แต่มีความทนแรงอัดที่ 27 วันสูงกว่าซีเมนต์กลุ่มที่ผสมน้ํากลั่นอย่างมี นัยสําคัญทางสถิติ ซีเมนต์ที่ผสมด้วยแคลเซียมคลอไรด์และเมททิลเซลลูโลสมีสภาพละลายได้มากกว่าไวท์โปรรูท เอ็มทีเอในวันแรกอย่างมีนัยสําคัญทางสถิติ แต่เมื่อผ่านไป 21 วัน ซีเมนต์ทั้ง 5 กลุ่มมีสภาพละลายได้ไม่แตกต่างกัน สรุป พอร์ตแลนด์ซีเมนต์สีขาวที่ผลิตในประเทศไทยที่มีบิสมัยออกไซด์เมื่อผสมด้วยแคลเซียมคลอไรด์และเมททิลเซลลูโลสจะมีระยะเวลาการแข็งตัวที่น้อยกว่า แต่มีความทนแรงอัดสูงกว่าไวท์โปรรูทเอ็มทีเอซีเมนต์ที่ผสมด้วยน้ํากลั่น มีสภาพละลายได้ที่ 21 วัน และความทึบรังสีไม่แตกต่างจากไวท์โปรรูทเอ็มทีเอ มีความเป็นด่างต่ํากว่าไวท์โปรรู เอ็มทีเอเล็กน้อย ซึ่งคุณสมบัติทางกายภาพโดยรวมของพอร์ตแลนด์ซีเมนต์ที่ผสมด้วยแคลเซียมคลอไรด์และเมททิลเซลลูโลสมีความเหมาะสมและเป็นไปได้ที่จะพัฒนาเพื่อนํามาใช้แทนไวท์โปรรูทเอ็มทีเอได้ในอนาคต ( ทันต จุฬาฯ 2553;33:207-20)