Dentistry Commons^™

ปัจจัยต่อแรงเสียดทานในทางทันตกรรมจัดฟัน, รักษ์รัฐ สิทธิโชค, ศิริมา เพ็ชรดาชัย

Chulalongkorn University Dental Journal

การรักษาทางทันตกรรมจัดฟันด้วยเครื่องมือจัดฟันชนิดติดแน่น ซึ่งมีการเคลื่อนที่ของฟันในการปรับระดับ และการเรียงตัวของฟัน หรือในการเคลื่อนฟันไปในตําแหน่งที่ถอนฟัน จะพบแรงเสียดทานเกิดขึ้นระหว่างลวดกับแบรกเกตในขณะที่มีการเคลื่อนที่แบบสไลดิง การควบคุมแรงเสียดทานนั้นมีความสําคัญต่อการควบคุมระดับของ แรงที่ใช้ในการเคลื่อนที่ของฟันและหลักยึดทางทันตกรรมจัดฟัน รวมทั้งเพื่อให้มีการตอบสนองของเนื้อเยื่ออวัยวะปริทันต์ที่ดีบทความนี้จึงมีวัตถุประสงค์เพื่อรวบรวมรายงานที่เกี่ยวข้องกับปัจจัยของแรงเสียดทาน ทั้งในส่วนของแบรกเกต ลวดทางทันตกรรมจัดฟัน และปัจจัยทางชีวภาพ เพื่อให้การเคลื่อนของฟันเป็นไปอย่างเหมาะสมตามแผน การรักษา (ว ทันต จุฬาฯ 2549;29:149-160)

Ada News - 05/01/2006, 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.

Dental Maturation In Children Treated For Acute Lymphocytic Leukemia, Michael Grey Weathersby

Theses and Dissertations (ETD)

Acute lymphocytic leukemia (ALL) is a life-threatening disease primarily affecting children. Treatment currently consists of chemotherapy sometimes in combination with head irradiation. The literature documents the damage of treatment to the teeth (e.g., congenital absence, microdontia, abnormal crown- root ratios). The present study assessed the effects of treatment for ALL on the tempos of dental maturation (i.e., dental age) in a mixed longitudinal sample of 72 children treated for ALL at St Jude's Children's' Research Hospital, Memphis, Tennessee. Panoramic radiographs had been taken as indicated to assess and maintain dental health in this retrospective study. Dental age was quantified both …

Influence Of Keratinized Mucosa, Bone Dimensions On Mucosal Recession And Bone Loss, Jeanette Keng Ling Chua

Loma Linda University Electronic Theses, Dissertations & Projects

Background: To accomplish successful esthetic outcome, it would be an advantage if some pre-implant placement conditions could be identified which would predict soft and hard tissue outcomes post-implant placement. This study was designed to evaluate the influence of 1) height of mid-buccal keratinized mucosa at implant surgery and 2) thickness of mid-buccal bone after osteotomy on the amounts of mid-buccal mucosal recession and bone loss during the first year after implant treatment. This report presents the initial 3-month follow-up.

Materials and methods: Nine patients scheduled for surgical placement of a total of 11 single-staged implants, without adjacent teeth and planned …

Training Program To Improve Estimation Of Patients' Periodontal Pain Experience, Yoon Jeong Kim

Loma Linda University Electronic Theses, Dissertations & Projects

Background: The purpose of this study was to determine if periodontal residents could enhance their ability to appraise the pain levels experienced by their patients from probing, using Visual Analog Scale (VAS) to record pain. We hypothesized that with increasing experience by repeated comparisons of the patients' VAS pain ratings with independent ratings by the residents, they would improve their ability to appraise their patients' pain experiences.

Methods: For each of three periodontal residents, 40 consecutive periodontitis patients were asked to express the degree of pain they experienced during the probing. Independently, the residents rated the pain level they perceived …

Changes In Integumental Dimensions Of The Face Following Orthodontic Treatment: A Long-Term Study, Jack Hou

Theses and Dissertations (ETD)

Most studies of facial growth in adults have relied on cross-sectional data. Longitudinal studies in this area are scarce because it is difficult to collect data on adults across time and because the changes are less dramatic than during childhood or adolescence. An interesting sample exists in the Charles H. Tweed collection, where orthodontic patients were recalled 10 or more years after treatment with an average time out of treatment of about 15 years. The availability of frontal facial photographs from this collection provided us with an uncommon opportunity to longitudinally quantify the changes in facial dimensions from adolescence into …

Dependence Of Craniofacial Growth On Stages Of Cervical Vertebral Maturation And Stages Of Mandibular Canine Mineralization, Charles Allen Chance

Theses and Dissertations (ETD)

When an individual presents for orthodontic treatment, orthodontic records are made that also include demographic information. The orthodontic treatment plan is determined not only from the diagnostic records but also from the relative amounts of growth the orthodontist perceives will take place during treatment. The purpose of this study was to determine if pretreatment biological age, as assessed from cervical vertebral (CV) maturity and/or mandibular canine mineralization, are statistically tied to the amount of growth occurring during treatment, and if so, then if biological age has any predictive merit in anticipating the amounts of growth occurring during treatment. The sample …

Ada News - 04/17/2006, 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 - 04/03/2006, 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.

Dentalgram - Vol. 20, No. 04, Loma Linda University School Of Dentistry

Dentalgram

In this issue:

• LLU well represented at AADR/IADR annual meetings
• Dr. Craig Ririe named interim chair, department of periodontics
• Keeping Connected staff meeting
• Faculty and students attend AOD meetings in Chicago

Contact Point, Arthur A. Dugoni School Of Dentistry

Contact Point

No abstract provided.

J Am Coll Dent 2006 73 2

Journal of the American College of Dentists

The Journal of the American College of Dentists (JACD) publishes scholarly articles, editorials, essays, and reflections addressing the ethical, professional, and social dimensions of dentistry. The Journal serves as a forum for advancing ethics, professionalism, leadership, and excellence within the dental community. By fostering dialogue across disciplines and perspectives, JACD provides readers with insights that encourage ethical, professional practice, lifelong learning, and service to the public, reinforcing dentistry’s commitment to advancing oral healthcare and the common good.

Effectiveness Of Chlorhexidine-Coating In Controlling Bacterial Quantity On Toothbrush Filaments, Lisa A. Turner

Dental Hygiene Theses & Dissertations

The purpose of this study was to determine if a significant difference exists in the effectiveness· of chlorhexidine-coated nylon brush filaments as compared to uncoated nylon filaments in reducing the quantity of bacteria. Methods: An IRB-approved, two-group, double-blind, randomized, post-test only design was conducted. Sixty-four individuals were randomly assigned to two equal groups of 32. After using the control or experimental toothbrushes for 30-days, participants returned the toothbrushes to the researchers in sealed autoclave bags. In the laboratory, microorganisms were detached from the toothbrush filaments by sonification and vortexing, then plated on both selective and non-selective media at various dilutions …

Ada News - 03/20/2006, 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 - 03/06/2006, 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.

Dentalgram - Vol. 20, No. 03, Loma Linda University School Of Dentistry

Dentalgram

In this issue:

• Forty-sixth Alumni Student Convention held February 9 to 13, 2006
• Patricia Emmerson named dental hygiene Alumna of the Year for 2006
• Department news
• In memoriam-Trini Briano
• Dr. Lowry visits alumni in Japan

Porcelain Surface Roughness, Color And Gloss Changes After Orthodontic Bonding, Jacob Jarvis, Spiros Zinelis, Theodre Eliades, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to evaluate the alteration in surface characteristics after orthodontic debonding of two types of porcelain systems commonly used in prosthetic dentistry. For this purpose, porcelain specimens were fabricated from low-fusing (n = 20) and high-fusing (n = 20) porcelain. The baseline surface roughness, color, and gloss were evaluated using profilometry, color shade index, and gloss study. All specimens were bonded with brackets and debonded using a testing machine at a rate of 0.1 mm/minute crosshead speed. The porcelain surfaces were polished using a 12-fluted carbide composite removal bur (low-fusing, n = 20; high-fusing, n …

A Comparison Of Bond Strength Between Direct- And Indirect-Bonding Methods, Brandon James Linn, David W. Berzins, Virendra B. Dhuru, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to evaluate and compare the shear bond strength and the sites of bond failure for brackets bonded to teeth, using two indirect-bonding material protocols and a direct-bonding technique. Sixty extracted human premolars were collected and randomly divided into three groups. The direct-bonded group (group 1) used a light-cured adhesive and primer (Transbond XT). One indirect-bonded group (group 2) consisted of a chemical-cured primer (Sondhi Rapid Set) and light-cured adhesive (Transbond XT), whereas the other group (group 3) used a light-cured primer (Orthosolo) and adhesive (Enlight LV). Forty hours after bonding, the samples were debonded. …

Bond Strength Of Direct And Indirect Bonded Brackets After Thermocycling, Jacob Daub, David W. Berzins, Brandon James Linn, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

Thermocycling simulates the temperature dynamics in the oral environment. With direct bonding, thermocycling reduces the bond strength of orthodontic adhesives to tooth structure. The purpose of this study was to evaluate the shear bond strengths (SBS) of one direct and two indirect bonding methods/adhesives after thermocycling. Sixty human premolars were divided into three groups. Teeth in group 1 were bonded directly with Transbond XT. Teeth in group 2 were indirect bonded with Transbond XT/Sondhi Rapid Set, which is chemically cured. Teeth in group 3 were indirect bonded with Enlight LV/Orthosolo and light cured. Each sample was thermocycled between 5°C and …

Mineralized Bone Allograft In Maxillary Sinuses Histology And Histomorphometry, Sammy Stefan Noumbissi

Loma Linda University Electronic Theses, Dissertations & Projects

Background: Demineralized freeze-dried bone allografts (DFDBA) and deproteinized bovine bone xenografts (DMBBX) have been used for sinus augmentation for many years with varying results, but very little has been reported on the clinical efficacy or the histological analysis of mineralized solvent dehydrated bone allografts (MSDBA) as sinus graft materials. This study histologically and histomorphometrically evaluated an MSDBA material called PUROS to augment atrophic human maxillary sinuses.

Materials & Methods: Seven partially and completely edentulous patients requiring unilateral (n=4) or bilateral (n=3) sinus grafts prior to implant placement were selected for this study. Test grafts consisted of MSDBA, and control …

Force To Debond Brackets From High-Fusing And Low-Fusing Porcelain Systems, Nicholas P. Ferri, Theodore Eliades, Spiros Zinelis, T. Gerard Bradley

School of Dentistry Faculty Research and Publications

The purpose of this study was to test the hypothesis that porcelain surface finishing, ie, low- and high-fusing porcelain, has an effect on the amount of force required to debond orthodontic brackets. A total of 20 high-fusing and 20 low-fusing porcelain specimens were prepared, polished, and bonded with standard edgewise brackets using a suggested porcelain bonding protocol. The brackets were debonded with a universal testing machine at shear mode. Resin removal was performed using two methods: a multifluted carbide bur with and without the use of Sof-Lex polishing discs. Representative specimens were studied under a scanning electron microscope before and …

Ada News - 02/20/2006, 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 - 02/06/2006, 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.

Dentalgram - Vol. 20, No. 02, Loma Linda University School Of Dentistry

Dentalgram

In this issue:

• Office of academic affairs releases dean's list
• IDP faculty and staff join phonathon; a first for the international dentist program department
• Department news
• A message from Sandy Blank

Gnathic Osteoblastoma: Clinicopathologic Review Of Seven Cases With Long-Term Follow-Up, Yeshwant B. Rawal, Francesca Angiero, Carl M. Allen, John R. Kalmar, Parish P. Sedghizadeh, Andrew M. Steinhilber

School of Dentistry Faculty Research and Publications

The clinical, radiographic and histopathologic features of seven cases of osteoblastoma of the jaw bones were analyzed. The mandible was involved in six cases and a periosteal presentation of the tumor was noted in three cases. Six tumors were symptomatic with pain being the common presentation. The radiographic appearance of the intraosseous tumors varied from well-defined radiolucencies to poorly-defined mixed lesions. A small periosteal tumor was undetectable radiographically. Histopathologically, the tumors exhibited variation in woven bone formation, osteoblastic rimming, lesional maturation as well as interaction of the tumor with surrounding host tissue. Intraosseous tumors were managed with aggressive surgical curettage …

Treponema Denticola In Disseminating Endodontic Infections, F. Foschi, Jacques Izard, H. Sasaki, V. Sambri, C. Prati, R. Müller, P. Stashenko

Department of Food Science and Technology: Faculty Publications

Treponema denticola is a consensus periodontal pathogen that has recently been associated with endodontic pathology. In this study, the effect of mono-infection of the dental pulp with T. denticola and with polymicrobial “red-complex” organisms (RC) (Porphyromonas gingivalis, Tannerella forsythia, and T. denticola) in inducing disseminating infections in wild-type (WT) and severe-combined-immunodeficiency (SCID) mice was analyzed. After 21 days, a high incidence (5/10) of orofacial abscesses was observed in SCID mice mono-infected with T. denticola, whereas abscesses were rare in SCID mice infected with the red-complex organisms or in wild-type mice. Splenomegaly was …

Ada News - 01/23/2006, 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 - 01/09/2006, 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.

Accuracy And Consistency Of Radiographic Interpretation Among Clinical Instructors In Conjunction With A Training Program, Sharon K. Lanning, Al M. Best, Henry J. Temple, Philip S. Richards, Alllison Carey, Laurie K. Mccauley

Periodontics Publications

There are inaccuracies and inconsistencies of radiographic interpretation among clinical instructors. The purpose of this investigation was to determine if a training program could improve the accuracy and consistency of instructors’ ratings of bone loss. A total of thirty-five clinical instructors consisting of periodontal faculty (periodontists and general dentists), dental hygiene faculty, and periodontal graduate students viewed projected digitized radiographic images and quantified bone loss for twenty-five teeth into four descriptive categories. Ratings of bone loss were made immediately before (pretest) and after (post-test 1) initiation of the training program and then again three months later (post-test 2). Ratings were …

Accuracy And Consistency Of Radiographic Interpretation Among Clinical Instructors Using Two Viewing Systems, Sharon K. Lanning, Al M. Best, Henry J. Temple, Philip S. Richards, Alllison Carey, Laurie K. Mccauley

Periodontics Publications

Accurate and consistent radiographic interpretation among clinical instructors is needed for assessment of teaching, student performance, and patient care. The purpose of this investigation was to determine if the method of radiographic viewing affects accuracy and consistency of instructors’ determinations of bone loss. Forty-one clinicians who provide instruction in a dental school clinical teaching program (including periodontists, general dentists, periodontal graduate students, and dental hygienists) quantified bone loss for up to twenty-five teeth into four descriptive categories using a view box for plain film viewing or a projection system for digitized image viewing. Ratings were compared to the correct category …