Dentistry Commons^™

ความแข็งแรงยึดติดแบบเฉือนระดับจุลภาคของสารยึดติดระบบยูนิเวอร์แซลต่อเนื้อฟันน้ำนม, เบญจพร ธนรติกุล

Chulalongkorn University Theses and Dissertations (Chula ETD)

วัตถุประสงค์ เพื่อประเมินค่าความแข็งแรงยึดติดแบบเฉือนระดับจุลภาคของสารเรซินคอมโพสิตต่อเนื้อฟันน้ำนมเมื่อนำสารยูนิเวอร์แซลแอดฮีซีฟมาใช้ในวิธีการของเอทช์แอนด์รินซ์และเซลฟ์เอทช์ วัสดุและวิธีการ ฟันหน้าตัดน้ำนมของมนุษย์จำนวน 40 ซี่ นำมาขัดผิวด้านริมฝีปากเพื่อให้เกิดพื้นที่เรียบของผิวเนื้อฟัน แบ่งกลุ่มอย่างสุ่มออกเป็น 4 กลุ่ม กลุ่มละ 10 ซี่ ตามชนิดและวิธีการใช้งานของสารยึดติด คือ สารแอดเพอร์ซิงเกิลบอนด์ทู (เอทช์แอนด์รินซ์แบบสองขั้นตอน) สารเคลียร์ฟิลเอสอีบอนด์ (เซลฟ์เอทช์แบบสองขั้นตอน) และสารซิงเกิลบอนด์ยูนิเวอร์แซล (เอทช์แอนด์รินซ์แบบสองขั้นตอนและเซลฟ์เอทช์แบบหนึ่งขั้นตอน) โดยฟันแต่ละซี่จะทำการยึดติดและอุดด้วยวัสดุเรซินคอมโพสิตตามคำแนะนำการใช้งานของบริษัทผู้ผลิต นำชิ้นงานที่ได้ไปแช่ในน้ำกลั่นที่อุณหภูมิ 37 องศาเซลเซียส เป็นเวลา 24 ชั่วโมง แล้วจึงนำมาทดสอบความแข็งแรงแบบเฉือนระดับจุลภาคที่ความเร็วหัวกด 1 มิลลิเมตรต่อนาทีจนเกิดการแตกหัก แล้วทำการตรวจสอบลักษณะความล้มเหลวในการยึดติดด้วยกล้องจุลทรรศน์อิเล็กตรอนแบบส่องกราด ผลการทดลอง สารแอดเพอร์ซิงเกิลบอนด์ทูมีค่าความแข็งแรงยึดติดเฉลี่ย (19.1 ± 3.4 เมกะพาสคาล) น้อยกว่าสารซิงเกิลบอนด์ยูนิเวอร์แซลที่นำมาใช้ในวิธีการของเอทช์แอนด์รินซ์ (24.3 ± 2.7 เมกะพาสคาล) อย่างมีนัยสำคัญ แต่เมื่อเปรียบเทียบการใช้งานในระบบเซลฟ์เอทช์ พบว่าสารเคลียร์ฟิลเอสอีบอนด์และสารซิงเกิลบอนด์ยูนิเวอร์แซลให้ค่าความแข็งแรงยึดติดแบบเฉือนระดับจุลภาคไม่แตกต่างกัน (25.3 ± 2.7 และ 25.1 ± 2.3 เมกะพาสคาล ตามลำดับ) ซึ่งลักษณะความล้มเหลวส่วนใหญ่ที่พบ เกิดบริเวณรอยต่อของเนื้อฟันกับสารยึดติดในทุกกลุ่มการทดลอง สรุป วิธีการใช้งานทั้งแบบเอทช์แอนด์รินซ์และเซลฟ์เอทช์ของสารซิงเกิลบอนด์ยูนิเวอร์แซลให้ค่าความแข็งแรงยึดติดที่ดีไม่ต่างกันบนผิวเนื้อฟันน้ำนม ส่วนบริเวณรอยต่อที่มีการยึดติดในแต่ละกลุ่มจะมีความแตกต่างกันไปตามค่าความเป็นกรดด่างและวิธีการการยึดติดที่ใช้

Surface Roughness Of Feldspathic Porcelain Polished With Alumina-Zirconia Paste, ศุภรักษ์ ยมกกุล

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this study was to develop a new polishing paste composed of zirconia that was leftover from the zirconia crown/bridge fabrication process that is as effective as diamond paste when used to polish feldspathic porcelain. This study was divided into two parts. First part was to study the surface roughness of feldspathic porcelain after polishing with diamond, alumina, zirconia and alumina-zirconia paste. The result showed that porcelain polished with zirconia paste had the highest mean Ra value, porcelains polished with alumina and alumina-zirconia paste had lower Ra values than zirconia paste while porcelain polished weight diamond paste demonstrated …

Effects Of Acemannan Deacetylation On Biological Activity Of Gingival Fibroblast, Jaroenporn Chokboribal

Chulalongkorn University Theses and Dissertations (Chula ETD)

Acemannan extracted from Aloe vera gel is unique in the presence of acetylated mannose residues and was reported to accelerate mice buccal wound healing. In order to assert structural and biological roles of mannose acetyl groups, high-molecular-mass DeAcAM of various DDAs were prepared by alkaline hydrolysis at 80°C for 5 min using varied concentrations of NaOH. All of the DeAcAMs are not cytotoxic to HGFs and their effects on cell proliferation and VEFG and type I collagen expressions were further investigated. In general, bioactivities of the DeAcAMs were lost to some extents upon the removal of the mannose acetyl groups …

Bioerodible Calcium Sulfate Bone Grafting Substitutes With Tailored Drug Delivery Capabilities, Bryan R. Orellana

Theses and Dissertations--Biomedical Engineering

Bone regeneration or augmentation is often required prior to or concomitant with implant placement. With the limitations of many existing technologies, a biologically compatible synthetic bone grafting substitute that is osteogenic, bioerodible, and provides spacing-making functionality while acting as a drug delivery vehicle for bioactive molecules could provide an alternative to ‘gold standard’ techniques.

In the first part of this work, calcium sulfate (CS) space-making synthetic bone grafts with uniformly embedded poly(β-amino ester) (PBAE) biodegradable hydrogel particles was developed to allow controlled release of bioactive agents. The embedded gel particles’ influence on the physical and chemical characteristics of CS was …

Oral Health Literacy Of Parents And Dental Service Use For Children Enrolled In Medicaid, Angel Smith

Walden Dissertations and Doctoral Studies

Many people in the United States have untreated dental disease due to a lack of dental insurance, a lack of oral health knowledge, and a lack of priority placed on dental health. Despite an increase in dental service use by Medicaid recipients as a result of local programs, children enrolled in Medicaid often have low rates of use of dental services. Using the health literacy framework of the Paasche-Orlow and Wolf (POW) model, the purpose of this study was to explore to the relationship between oral health literacy of parents and dental service use for children enrolled in Medicaid and …

Detection Of Scardovia Genus From Oral Samples In Children Using Real-Time Quantitative Polymerase Chain Reaction, Jungyi Alexis Liu

All ETDs from UAB

Streptococcus mutans (Sm) and Streptococcus sobrinus (Ss) , are considered the major bacterium associated with dental caries. However, recent findings identify Scardovia species (Sc) is associated with early childhood caries, with or without the presence of Sm or Ss. This IRB approved study quantified the presence of Sm and Sc in saliva by real-time quantitative PCR (qPCR) in relation to caries. Saliva samples were collected from 72 preschool children in a high-caries risk community in rural Alabama. SYBR Green-based qPCR using extracted DNA and primers specific for Sm, Ss, Sc and total bacteria determined the copy number (CN/ml). Twenty two …

Frequency Of Dentofacial Asymmetries: A Cross-Sectional Study On Orthodontic Patients, Nita Kumari Bhateja, Mubassar Fida, Attiya Shaikh

Section of Dental-Oral Maxillofacial Surgery

Background: Correction of orthodontic asymmetries is crucial to achieve functional occlusion, aesthetics and stability of post orthodontic treatment results. To date valid frequency data of dentofacial asymmetries in Pakistani orthodontic patients do not exist to document orthodontic treatment need. The objectives of this study were to determine frequency of dento-facial asymmetries, severity of dental asymmetries and to determine difference in frequency of dentofacial asymmetries in mixed and permanent dentition.
Methods: The sample of this cross-sectional study comprised of 280 patients (177 females and 103 males) with no history of previous orthodontic treatment having no craniofacial anomalies. Dento-facial asymmetries were assessed …

The Effect Of Canal Preparation On Fill Length In Straight Root Canals Obturated With Guttacore®, Robert Bryan Whitten

MUSC Theses and Dissertations

Introduction: A common critique of using thermoplasticized obturators is the incidence of overextension. It would be of benefit to clinicians to have a technique for canal preparation that would allow for predictable length control. This study compared straight canals instrumented to a size 40 file using a 0.04 standardized taper preparation (STP) with a varied taper preparation (VTP) by evaluating the extension of GuttaCore® (GC) obturators (Dentsply Tulsa Dental, Tulsa, OK). Methods: Eighty extracted mature human premolars with single straight canals were randomly divided into 2 experimental groups (n = 40). Group 1 was instrumented to size 40/.04 at working …

Injury Prevention With Physical Therapy, Karen Kott, Margaret F. Lemaster

Rehabilitation Sciences Faculty Publications

(First paragraph) Ergonomics is the study of human performance (positioning and movement) and workplace design, such as equipment, ambience, and placement. The purpose of ergonomics is to maximize productivity by increasing safety, improving work quality, reducing operator fatigue and discomfort, and decreasing the risk of work -related musculoskeletal disorders (MSDs).^1-3

Virginia Dental Journal (Vol. 91, No. 4, 2014)

Virginia Dental Journal

No abstract provided.

Virginia Dental Journal (Vol. 91, No. 2, 2014)

Virginia Dental Journal

No abstract provided.

A Curricular Reform Viewed Through Bolman And Deal’S Organizational Frames, Lucinda J. Lyon, Nader A. Nadershahi, A. Nattestad, P. Kachalia, Daniel A. Hammer

All Dugoni School of Dentistry Faculty Articles

Professions exist to serve the needs of society, communities and, in the case of the dental profession, patients. Academic dental institutions strive to help meet these needs by educating and developing future practitioners, educators, researchers, and citizen leaders who serve the community and shape the changing environment in which they practice and provide care. The American Dental Association Commission on Change and Innovation affirms, “If dental educators are to meet these purposes, change and innovation in dental education must be responsive to evolving societal needs, practice patterns, scientific developments, and economic conditions”(Haden, et al., 2006). Guiding any institution through such …

A Prospective Study Of Periodontal Disease And Risk Of Gastric And Duodenal Ulcer In Male Health Professionals, Matthew R. Boylan, Hamed Khalili, Edward S. Huang, Dominique S. Michaud, Jacques Izard, Kaumudi J. Joshipura, Andrew T. Chan

Department of Food Science and Technology: Faculty Publications

Periodontal disease is characterized by microbial shifts within the oral cavity and chronic inflammation of the gingival tissue, and can lead to tooth loss. Several studies support an association between periodontal disease and risk of chronic systemic conditions, including vascular disease, chronic obstructive pulmonary disease, diabetes mellitus, and cancer, including gastric adenocarcinoma. These associations may be mediated by systemic inflammation, the immune response to periodontal infection, or direct invasion by pathogens. Previous studies of periodontal disease and risk of peptic ulcer have been limited by cross-sectional design, diagnoses that were not confirmed by medical record review, and a lack of …

The Impact Of Oral Health On Quality Of Life In The Aging Population, Jana Mannen

EWU Masters Thesis Collection

Purpose: This study sought to bring awareness to the scientific community of the need for regular dental care in skilled nursing facilities (SNF) by proving access to oral care has an effect on oral health and may have an impact on the SNF residents’ daily performance and Quality of Life (QoL). Methods: This study was conducted at a private SNF in a southern metropolitan area with a sample size of 30 (N=30). The PI and two research assistants conducted interviews and oral exams using a modified 10 item Oral Impacts on Daily Performance (OIDP) with two free response (QoL) questions, …

Regulatory Control Of Palatogenesis And Odontogenesis By Specificity Protein 7, John Christopher Clarke

All ETDs from UAB

Runx2 and its downstream target Specificity Protein 7 (Sp7) are essential for skeletogenesis. In humans, mutations in Sp7 gene are associated with osteogenesis imperfecta. Unlike Runx2, the role of Sp7 in palatogenesis, tooth development or differentiation of ameloblasts and odontoblasts remains unknown. The main goal of this research was to identify the functional requirement of Sp7 transcription factor during tooth development and palatogenesis. Molecular, biochemical, and histological approaches were employed to answer this question. We established Sp7-null mice that are completely void of mineralized tissue, exhibit craniofacial dysmorphogenesis and die shortly after birth. Surprisingly, Sp7 homozygous mutants exhibited normal tooth …

Analysis Of Debris From Implant Prostheses, Mehran Varedi

All ETDs from UAB

Objectives: The specific aim of this study was to analyze any entrapped debris in implant abutment screw threads from post processed constructs from dental laboratories. Materials and Methods: Forty implant screws were used to collect debris where screws were removed from the implant prosthesis as received from dental laboratories. In all samples, laboratory procedures including fabrication of the custom abutment, definitive prosthesis and finishing/polishing were completed prior to sampling. Twenty-nine screws were from titanium and eleven screws were from zirconia abutments. Scanning Electron Microscope (SEM) analyses of collected particulate products from abutment screws were done for all specimens. Results: The …

Clinical Evaluation Of Non-Carious Cervical Lesions- A Five Year Prospective Evaluation, Kanchan Sawlani

All ETDs from UAB

Non-carious cervical lesions (NCCLs) have a non-bacterial origin and produce a loss of tooth structure at the cemento-enamel junction. A review of the literature reveals that these lesions may have a multifactorial etiology (chemical, abrasion, abfraction). The role of heavy biting forces in the pathogenesis of NCCLs is yet to be firmly established. Treatment and preventive measures for NCCLs can be improved if the etiology can be clearly identified and treated.Objective: This prospective clinical trial measured the volume loss (increase in size) of NCCLs and the occlusal biting forces applied to these teeth; diet and tooth brushing analysis, followed by …

Cutting Effectiveness Of Diamond Burs On Dental Zirconia., Ching-Kai Lin

All ETDs from UAB

Monolithic zirconia restorations are popular but removing these crowns is difficult. The purpose of the study is to measure and compare the cutting effectiveness of 10 types of diamond burs through monolithic sintered zirconia. Ten types of diamond burs (n=8) were compared for the cutting effectiveness in Zirconia (CERCON; DeguDent) using a high speed computer controlled cutting device with water spray (5.45L/min). The turbine used to cut the blocks rotated at 150,000 rpm and with the burs at a depth of 2mm into the zirconia during cutting. A 100 gm load was applied during cutting for each bur which made …

Interprofessional Education On Oral Care For Cancer Patients In Dental Hygiene And Nursing, Shaun Christenson

EWU Masters Thesis Collection

Purpose: Interprofessional education (IPE) provides academic experiences for students to learn about different professions, their roles, and improving attitudes toward communications between professions with the intent of improving patient overall healthcare. This study evaluated the impact of IPE and knowledge the students gained on oral healthcare for cancer patients.

Methods: This quasi-experimental study used a convenient sample of nursing and dental hygiene students. Participants were given a pre and post survey to collect quantitative data that included a Readiness for Interprofessional Survey (RIPLS) and a PI-designed multiple-choice survey to determine students’ attitudes and learning. A module of IPE and oral …

An Automated Dental Caries Detection And Scoring System For Optic Images Of Tooth Occlusal Surface, Leila Ghaedi

Theses and Dissertations

Dental caries are one of the most prevalent chronic diseases. Worldwide 60 to 90 percent of school children and nearly 100 percent of adults experienced dental caries. The management of dental caries demands detection of carious lesions at early stages. The research of designing diagnostic tools in caries has been at peak for the last decade. This research aims to design an automated system to detect and score dental caries according to the International Caries Detection and Assessment System (ICDAS) guidelines using the optical images of the occlusal tooth surface. There have been numerous works that address the problem of …

Aadej Comm 45 1&2 2014

AADEJ - The Communicator

The Communicator is the official journal of the American Association of Dental Editors and Journalists (AADEJ). It is published quarterly, distributed digitally via email to members, and posted on the Association's website, AADEJ.org. Each issue includes regular updates from the editorial team and AADEJ board, as well as feature articles on current issues in the field.

This is a combined issue for 2015, issue 1 and 2.

Aadej Comm 45 3&4 2014

AADEJ - The Communicator

The Communicator is the official journal of the American Association of Dental Editors and Journalists (AADEJ). It is published quarterly, distributed digitally via email to members, and posted on the Association's website, AADEJ.org. Each issue includes regular updates from the editorial team and AADEJ board, as well as feature articles on current issues in the field.

This is a combined issue for 2015, issues 3 and 4.

Accelerated Aging Effects On Color And Translucency Of Flowable Composites, Yonca Korkmaz Ceyhan, Joe C Ontiveros, John M Powers, Rade D Paravina

Faculty, Staff and Student Publications

OBJECTIVES: To evaluate the effect of accelerated aging on color and translucency parameter of composites.

MATERIALS AND METHODS: Filtek Supreme Ultra Flowable, shades A1, A3, White, Tetric EvoFlow, shades A1, A3, Bleach, and Filtek Z250 shades A1, A3, B1 were evaluated. Color and translucency were recorded using a spectrophotometer after 24-hour storage (baseline) and after accelerated aging. The data were analyzed by analysis of variance.

RESULTS: Fisher's PLSD intervals for comparisons among products and shades were 0.4, 0.1, 0.3, and 0.4 for ΔL*, Δa*, Δb*, and ΔE*, respectively. The data showed significant ΔE* and ΔL* main effects for composite product …

Long-Term Stability Of Maxillary Advancement In Non-Syndromic Cleft Lip And Palate Patients Using The Red Ii System, Jared Adrian Carter

All ETDs from UAB

Objective: The purpose of this study is to evaluate skeletal stability at a minimum of one year following maxillary advancement distraction osteogenesis with the KLS Martin RED II System in non-syndromic CLP patients treated at UAB SOD. Methods: This retrospective cohort study evaluated 20 non-syndromic CLP patients (12 males, 8 females, average age 10.97) treated at the UAB SOD by the same surgeon for maxillary hypoplasia with rigid external distraction using the RED II System (KLS Mar-tin Group, Tuttlingen, Germany). Pre-surgical (T1), post-consolidation (T2), and LTFU (T3) radiographs were digitized and analyzed with via a custom analysis to evaluate treatment …

Effect Of Abutment Position On Retention After Cyclic Loading Of Cantilevered Y-Tzp Fpds, Aikaterini Kostagianni

All ETDs from UAB

Purpose: The influence of the vertical abutment positions on the retention of a three-unit implant supported cantilevered FPD restoration was measured and compared. Methods: The study included four groups (n=10) of cantilevered FPDs restorations, fabricated of monolithic zirconia. Prefabricated titanium implant abutments were used and connected to their analogs. The analogs were fixated on a split mold and their vertical position was adjusted on a 2 mm bases depending on the group, resulting also to an alteration of the occlusal thickness of the restorative material. The prosthesis were cemented to the abutments with Rely X Luting Plus resin modified glass …

3-Dimensional Comparison Of Hard And Soft Tissue Asymmetry In, Philip H. Pan

All ETDs from UAB

Class III malocclusions are particularly prevalent in the Asian population. Threedimensional imaging has improved the ability to portray the three-dimensional characteristics of soft tissue face and underlying skeletal hard tissue. While soft tissue reflects the underlying hard tissue structures, soft tissue may either provide a compensation for hard tissue asymmetry or potentially exacerbate the asymmetry. The current study is novel in that the hard tissue and soft tissue asymmetries are both analyzed relative to the same reference point, and using 3D imaging, we have attempted to elucidate a compensation tendency between the hard and soft tissues. The sample was comprised …

Investigation Of Lateral Incisor Crown Root Angulation And Impacted Maxillary Canines, Samuel Philip Purnell

All ETDs from UAB

Objective: The primary aim of this study was to determine if there is a difference in the mesiodistal crown-root angulation of maxillary lateral incisors between patients with impacted maxillary canines and a control population. Secondary aim 1 compared the same angle measured on panoramic radiographs to determine if a difference existed between the CBCT measurement and the panoramic radiograph measurement. Secondary aim 2 looked to determine if there was a correlation between maxillary lateral incisor tooth width and the mesiodistal crown-root angulation. Materials and Methods: CBCT's were reformatted so that the mesiodistal crown-root angulation of maxillary lateral incisors could be …

Three-Dimensional Photography Of Facial Morphology Of African-American Children Compared To Welsh Children, Don Franklin Norris

All ETDs from UAB

The purpose of this study is to compare the facial morphology of African-American children to Welsh children using three-dimensional imaging. Materials and Methods: Three-dimensional images were captured using a stereo-photogrammatic camera system (3dMDfaceTM). 107 African-American children were imaged with the 3dMDfaceTM system and were compared with 64 Welsh children which were previously imaged using two Minolta Vivid VI900 3D laser scanners arranged in a stereo pair. The subjects were between 10 and 13 years old, presented with a normal BMI, and had no major craniofacial deformity. The images were aligned, combined and averaged using Rapidform 2006 Plus Pack 2 software …

Oral Health Knowledge, Attitudes, And Practices Among Secondary School Students In Nigeria, Johnson John Omale

Walden Dissertations and Doctoral Studies

Bold

Comparison Of Corded And Cordless Handpieces On Forearm Muscle Activity, Procedure Time And Ease Of Use During Simulated Tooth Polishing, Gayle Mccombs, Daniel M. Russell

Dental Hygiene Faculty Publications

Purpose: Dental professionals suffer from a high prevalence of work-related musculoskeletal disorders (MSD). Dental hygienists in particular have a high prevalence of pain in the forearms and hands. The objective of this study was to compare 1 cordless handpiece to 2 corded handpieces during simulated tooth polishing in terms of the muscle loads (recorded as electromyography (EMG) activity), duration of polishing procedure, and dental hygienist opinion about ease of use. Methods: EMG was used to quantify muscle electrical activity of 4 forearm muscles during simulated dental polishing with 2 corded handpieces (HP-A and HP-B) and 1 cordless handpiece (HP-C). A …