Medicine and Health Sciences Commons^™

การเปรียบเทียบผลการคืนกลับแร่ธาตุของวัสดุกลาสไอโอโนเมอร์ซีเมนต์ชนิดดัดแปลงด้วยเรซินและวัสดุแคลเซียมซิลิเกตชนิดดัดแปลงด้วยเรซินในเนื้อฟันที่มีการสูญเสียแร่ธาตุ, โชษิตา ธีระเกษมสุข

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้มีวัตถุประสงค์เพื่อเปรียบเทียบความสามารถในการคืนกลับแร่ธาตุของกลาสไอโอโนเมอร์ซีเมนต์ชนิดดัดแปลงด้วยเรซิน (Resin-modified glass ionomer cement; RMGIC) กับแคลเซียมซิลิเกตซีเมนต์ชนิดดัดแปลงด้วยเรซิน (Resin-modified calcium silicate cement; RMCSC) ทดสอบโดยใช้เนื้อฟันส่วนตัวฟันจากฟันกรามแท้มนุษย์จำนวน 24 ซี่ ทำการตัดตัวฟันที่รอยต่อหนึ่งส่วนสามกลางตัวและหนึ่งส่วนสามปลายฟันจากนั้นกรอเตรียมโพรงฟันชนิดคลาสวันบนผิวเนื้อฟัน บริเวณพื้นโพรงฟันจะถูกวัดความแข็งผิวระดับจุลภาคที่ 3 บริเวณ ได้แก่ บริเวณควบคุม บริเวณสูญเสียแร่ธาตุ และบริเวณคืนกลับแร่ธาตุ ทำการแบ่งแต่ละบริเวณด้วยการทาน้ำยาทาเล็บ โดยในขั้นแรกทาน้ำยาทาเล็บที่ผิวฟันรอบนอกทั้งหมด ผนังโพรงฟันโดยรอบ และ 1 ใน 3 ของพื้นโพรงฟันบริเวณแรกเพื่อแบ่งบริเวณควบคุม จากนั้นนำชิ้นงานไปผ่านสภาวะจำลองที่ส่งเสริมให้เกิดการละลายแร่ธาตุ แล้วทาน้ำยาทาเล็บที่ 1 ใน 3 ของพื้นโพรงฟันบริเวณที่สองเพื่อแบ่งบริเวณสูญเสียแร่ธาตุ แบ่งชิ้นทดสอบออกเป็น 2 กลุ่ม กลุ่มละ 12 ชิ้น โดยกลุ่มแรกบูรณะโพรงฟันด้วย RMGIC (กลุ่ม RMGIC) และอีกกลุ่มบูรณะด้วย RMCSC (กลุ่ม RMCSC) เมื่อบูรณะเสร็จ จากนั้นแช่ตัวอย่างทั้งหมดในน้ำปราศจากไอออนที่อุณหภูมิ 37 องศาเซลเซียสเป็นเวลา 30 วัน ทำการฝังชิ้นงานทั้งหมดอะคริลิกเรซิน และตัดเป็นครึ่งชิ้นงานตามแนวใกล้กลาง-ไกลกลาง วัดค่าความแข็งระดับจุลภาคชนิดนูปทั้งสามบริเวณที่ระยะ 20, 40, 60, 100, 150 และ 200 µm จากรอยต่อระหว่างวัสดุบูรณะกับพื้นโพรงฟัน โดยทำการวัดซ้ำในแต่ละระยะเป็นจำนวนสามรอยกด มีระยะห่างระหว่างรอยกด 100 µm คำนวณความแตกต่างของค่าเฉลี่ยความแข็งระดับจุลภาคแบบนูปในแต่ละบริเวณ วิเคราะห์ความลึกของการเกิดการคืนกลับแร่ธาตุในแต่ละวัสดุด้วยสถิติ paired t-test และเปรียบเทียบความสามารถในการคืนกลับแร่ธาตุระหว่างวัสดุด้วยสถิติ independent t-test กำหนดระดับนัยสำคัญทางสถิติที่ p <.05 จากผลการศึกษาพบว่าความลึกของการเกิดการคืนกลับแร่ธาตุของวัสดุทั้งสองชนิดมีไม่แตกต่างกันอย่างมีนัยสำคัญทางสถิติ อย่างไรก็ตาม การเปลี่ยนแปลงของค่าความแข็งระดับจุลภาคแบบนูปหลังผ่านการคืนกลับแร่ธาตุของกลุ่ม RMCSC ต่ำกว่ากลุ่ม RMGIC จากผลการศึกษานี้จึงสรุปได้ว่าวัสดุ RMGIC มีแนวโน้มมีประสิทธิภาพในการคืนกลับแร่ธาตุมากกว่าวัสดุ RMCSC

Current Trends And Future Perspectives Of Oral Pathology: Indian Scenario, Yeshwant B. Rawal

School of Dentistry Faculty Research and Publications

No abstract provided.

Multitarget Stool Dna Testing For The Prevention Of Colon Cancer: Outcomes In A Large Integrated Healthcare System, Nimish Vakil, Kristin Ciezki, Nadia Huq, Maharaj Singh

School of Dentistry Faculty Research and Publications

Background and Aims

Multitarget stool DNA (MT-sDNA) testing is used in primary care as a screening test for colon cancer. Test effectiveness and patient compliance were examined in clinical practice.

Methods

We assessed outcomes of MT-sDNA testing in a cohort study conducted in a large integrated healthcare system comprising 15 hospitals and 150 outpatient clinics using advanced electronic data capture (Clarity2 [Epic, Verona, Wisc, USA] and REDCap [Encinitas, Calif, USA]) followed by manual chart review to confirm MT-sDNA test results and to monitor the outcomes of subsequent colonoscopy.

Results

A total of 6835 MT-sDNA tests were performed over 1 year …

Hydrogen Peroxide Preconditioning Promotes Protective Effects Of Umbilical Cord Vein Mesenchymal Stem Cells In Experimental Pulmonary Fibrosis, Tayebeh Mahmoudi, Kamal Abdolmohammadi, Hamed Bashiri, Mehdi Mohammadi, Mohammad Jafar Rezaie, Fardin Fathi, Shohreh Fakhari, Mohammad Ali Rezaee, Ali Jalili, Mohammad Reza Rahmani, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Purpose

Idiopathic pulmonary fibrosis (IPF) is a progressive lung disorder with few available treatments. Mesenchymal stem cell therapy (MSCT), an innovative approach, has high therapeutic potential when used to treat IPF. According to recent data, preconditioning of MSCs can improve their therapeutic effects. Our research focuses on investigating the anti-inflammatory and antifibrotic effects of H₂O₂-preconditioned MSCs (p-MSCs) on mice with bleomycin-induced pulmonary fibrosis (PF).

Methods

Eight-week-old male C57BL/6 mice were induced with PF by intratracheal (IT) instillation of bleomycin (4 U/kg). Human umbilical cord vein-derived MSCs (hUCV-MSCs) were isolated and exposed to a sub-lethal concentration (15 …

Biomedical Applications Of Zeolitic Nanoparticles, With An Emphasis On Medical Interventions, Hossein Derakhshankhah, Samira Jafari, Sajad Sarvari, Ebrahim Barzegari, Faezeh Moakedi, Milad Ghorbani, Behrang Shiri Varnamkhasti, Mehdi Jaymand, Zhila Izadi, Lobat Tayebi

School of Dentistry Faculty Research and Publications

The advent of porous materials, in particular zeolitic nanoparticles, has opened up unprecedented putative research avenues in nanomedicine. Zeolites with intracrystal mesopores are low framework density aluminosilicates possessing a regular porous structure along with intricate channels. Their unique physiochemical as well as physiological parameters necessitate a comprehensive overview on their classifications, fabrication platforms, cellular/macromolecular interactions, and eventually their prospective biomedical applications through illustrating the challenges and opportunities in different integrative medical and pharmaceutical fields. More particularly, an update on recent advances in zeolite-accommodated drug delivery and the prevalent challenges regarding these molecular sieves is to be presented. In conclusion, strategies …

In Vitro Evaluation Of Different Protocols For Preventing Microleakage Of Fissure Sealants Placed Following Saliva Contamination, Hayrunnisa Şimşek, A. Rüya Yazici, H. Cem Güngör

School of Dentistry Faculty Research and Publications

Purpose: To evaluate the effect of different enamel conditioning protocols and their re-application on the microleakage of fissure sealants placed following saliva contamination.

Study design: The study included 156 human third molars in 16 subgroups (2×4×2) under two main groups (sealant type): Group A- hydrophobic resin sealant, 3M Clinpro^™ Sealant; Group B- hydrophilic resin sealant, Ultraseal XT Hydro. Each group was then divided according to the type of surface conditioning; 1- Er,Cr:YSSG laser etching, 2- acid-etching, 3- acid-etching+etch-and-rinse adhesive (Prime&Bond^® One Select) and 4- self-etching adhesive (Clearfil^™SE Bond). After contaminating the conditioned occlusal enamel surfaces with …

Correlation Between Number Of Mendeley Readers And Citations In Dental Sciences, Jafar Kolahi, David G. Dunning, Edward F. Rossomando

Journal Articles: College of Dentistry

No abstract provided.

West Virginia Dentists' Perception Of The Knowledge And Skills Of Two Vs. Four Year Dental Hygiene Graduates, Kaitlyn M. Mcquain

Graduate Theses, Dissertations, and Problem Reports (ETD)

The entry level for the dental hygiene profession has, historically been an associate degree. In 2016 the American Dental Hygiene Association (ADHA) approved the Bachelor’s Degree level of education as the preferred for entry level degree. This study is to determine practicing West Virginia dentists preference for the education level of their entry-level dental hygiene employees. There were 1020 surveys electronically distributed to practicing WV dentists to obtain their opinions and preferences. WVU Research Electronic Data Capture (REDCap) was used to determine response percentages and Chi-square statistics were used to compare 2017 to 2019 response rates. Between 2016-2017 and 2018-2019, …

Wv Dental Hygienists' Knowledge And Educational Approach For Pregnant Women, Isabella Hope Mcdaniel

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Adverse pregnancy outcomes have become a concern for dental professionals caring for pregnant women with poor oral health. Pregnant women may not be aware of their increased risk of bacterial infections in their oral tissues and how it could relate to adverse pregnancy outcomes such as pre- term birth (PTB) and low birthweight babies (LBW). Dental healthcare professionals need to be well informed of risk related to poor oral health and have confidence to effectively educate pregnant women. PTB and LBW babies account for 1 million infant deaths annually. It is the responsibility of dental healthcare professionals to be …

Virginia Dental Journal (Vol. 97, No. 4, 2020)

Virginia Dental Journal

No abstract provided.

Virginia Dental Journal (Vol. 97, No. 3, 2020)

Virginia Dental Journal

No abstract provided.

A Comparison Of Three-Dimensional Printing Technologies On The Precision, Trueness, And Accuracy Of Printed Retainers, Owais A. Naeem

Theses and Dissertations

Purpose: The aim of this study was to evaluate the differences in the precision, trueness, and accuracy of 3D printed orthodontic clear retainers produced using printer systems with various printing technologies.

Methods: Retainers (n=15) were printed using four different 3D printers: a stereolithography (SLA) printer, two different digital light processing (DLP and cDLP) printers, and a polyjet photopolymer (PPP) printer. The 3D printed retainers were transformed into a digital file through a cone-beam computed tomography scan that was compared to the original image using a 3D superimposition analysis software. At previously chosen landmarks (R6, L6, R3, L3, R1, L1) retainers …

Non-Invasive Retrieval Of Prefabricated Zirconia Crowns With Er,Cr:Ysgg Laser From Primary And Permanent Teeth, Connor W. Mccall Dds

Theses and Dissertations

Purpose: Compromised tooth structure on permanent and deciduous teeth in the pediatric population is increasingly being restored with tooth-colored prefabricated zirconia crowns. These restorations may need to be removed or replaced with permanent crowns. The purpose of this in vitro study was to explore the use of an Er,Cr:YSGG laser for removal of prefabricated zirconia crowns cemented with RMGI as a non-invasive alternative to rotary instruments.

Methods: Thirteen permanent and 12 primary molars were prepared to dentin and prefabricated zirconia crowns were passively fitted and cemented with two resin modified glass ionomer cements. The irradiation parameters for ErCR:YSGG were 4.5 …

Selenomonas Sputigena: Growth Conditions And Projected Virulence Factors Of An Emerging Oral Pathogen, Kayla A. Keller

Theses and Dissertations

Periodontal diseases are ubiquitous diseases. They can affect people through a chronic infection that happens over a lifetime, but also as an aggressive infection that afflicts the younger population. It not only results in tooth loss and a lower quality of life, but it can also lead to fatal secondary infections like cervical cancer, heart disease, and Alzheimer’s disease. This study looks at Selenomonas sputigena, an emerging oral pathogen, that has been hypothesized to contribute to periodontal disease. It has been linked to fatal septicemia and has been found in increased abundance within the oral biofilm during peak infection. …

A Case Of Intertrochanteric Fracture, Sahil Munjal

Digital Journal of Clinical Medicine

No abstract provided.

Three Dimensional Biometric Guide In Determining Maxillary Tooth Position And Arch Form, Tawfiq Omar Farouq

Student Works (2020-2029)

In complete denture fabrication, when pre-extraction records are lacking, determining the denture teeth positions to where the natural predecessors occupied is essential yet challenging. Although several biometric guides were suggested to position teeth for dentures, none is providing three-dimensional (3D) positions of teeth that can be used in the recently developed computer designed digital dentures. The aim of this study was to develop new biometric guides to determine the original 3D positions of the maxillary teeth and dental arch form individualised for each given dentate or edentulous maxillary cast based on selected intraoral landmarks. The objectives were to investigate the …

A Case Of Alcohol Induced Psychotic Disorder With Depression Presenting During Covid19 Lockdown, Dr. Sopan T, Dr Kishor M

Digital Journal of Clinical Medicine

No abstract provided.

A Case Of Spina Bifida Occulta With Tethered Cord Syndrome, Dr. Shivangi G, Dr. M.D. Ravi

Digital Journal of Clinical Medicine

No abstract provided.

A Case Of Squamous Cell Carcinoma, Dr. Pranav Prabhu, Dr. Gurgi Mukthinath

Digital Journal of Clinical Medicine

No abstract provided.

Polymicrobial Interactions Between Selected Microbes Of Oral Biofilm And Differential Expression Of Als Genes And Their Related Proteins, Fahim Ayesha

Student Works (2020-2029)

More than 700 different types of microorganisms dwell in human oral mucosal surfaces. The interactions between these microorganisms contribute to formation of polymicrobial communities on hard and soft tissues as well as on dentures and implants. Candida albicans, a pleomorphic fungus inhabiting oral and gastrointestinal (GIT) mucosa becomes pathogenic in favourable conditions causing local or systemic disease. Since streptococci are early colonisers, the ability of Candida albicans to adhere to streptococci paves the way for an additional surface for candidal colonization and propagation. This study was aimed to investigate polymicrobial interactions between C. albicans, S. sanguinis and S. mitis on …

Potential Of Human Deciduous Periodontal Ligament Stem Cells For Use In Hepatic Lineage And Their Exosome Application On Hepatic Injuries, R. Vasanthan Punitha

Student Works (2020-2029)

Introduction: Human deciduous periodontal ligament stem cells represent as another source of stem cells from the dental origin. These cells were shown to have multi-potential attributes and also self renewing ability. These easily accessible stem cells candidate could also resolve issues concerning ethical and compatability for the use in regenerative purposes. However, their efficiency towards hepatic lineage differentiation has not been addressed so far. Meanwhile, the main contributor for regenerative properties were supposedly mediated by soluble factors and extracellular vesicles such as exosomes secreted by cells. Objectives: The aims of this study are to isolate, characterize and also to investigate …

Dental Therapists' Professional Role And Possible Futures Within The Malaysian Dental Workforce, Zakaria Noor Azhani

Student Works (2020-2029)

Introduction: The Malaysian Dental Act 2018 has recently superseded the Dental Act 1971. Under this Act, dental therapists are required to register under the Therapist Division, are allowed to work at the private practice, and treat a person up to the age of 18 years old under direct supervision of dentist. It is important to assess the perceptions among essential stakeholders with regards these changes and how it affects the future dental therapists’ workforce. Objectives: To explore the dental therapist future workforce dynamics across sectors (public-private) in Malaysia. Materials and methods: In Phase 1, three parallel quantitative surveys were conducted …

Acculturative Stress, Social Support And Oral Health Related Quality Of Life Among International Graduate Students In Malaysian Public Universities, Ben Ghasheer Hala Fathalla

Student Works (2020-2029)

Background: Oral health related quality of life (OHRQoL) reflects the impact of the oral condition on physical, social, and psychological functioning and well-being from an individual’s perspective. It is an important health outcome that is influenced by several factors which together are known as the determinants of health. Psychosocial factors are among many other factors that have a crucial role in shaping oral health. Understanding their role in relation to diminished oral health has gained more interest in recent years since such factors could serve as points of intervention for new oral health promotion strategies. Aim: This study aimed to …

The Effect And Feasibility Of The Sims Programme To Improve Preschool Children's Oral Hygiene Level And Related Behaviours: A Cluster Randomised Control Trial, Anwar Nurul Hayati

Student Works (2020-2029)

Background: The preschool oral healthcare programme (POHP) was introduced by the Ministry of Health in 1984 to provide oral healthcare to 5-6-year-old children in Malaysia. Due to some limitations, a new programme called the ‘Senyuman Indah Milik Semua’ Programme (SIMSP) was introduced with the aim to improvise the POHP. In the SIMSP, a triad of dental therapists (DTs), teachers, and parents was set up to promote children’s oral hygiene level, oral health behaviours (OHBs), and parents’ oral health literacy (OHL). The POHP only involved DTs. Objectives: The primary objective of the study was to assess the effect of SIMSP versus …

Effect Of Different Static Surgical Guided Systems On The Accuracy Of Implant Position In Esthetic Zone, Arissa Amnuaychottawe

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objectives To evaluate the effect of different surgical guided systems on the accuracy of single implant placement in the anterior zone. Methods Twenty operators were divided into two groups by the system they performed in the experiment (Straumann Guided Surgery®; SG and Astra Tech Guide Surgery®; AG). One operator placed one implant on the right central incisor using a computer-guided template that had been planned with 3Shape Implant Studio® program. After the implant installation process was completed, all models were scanned and determined the placed implant position. The amount of coronal, horizontal, vertical, and angular deviation of planned and placed …

Stress Of Thai Dentists During Covid-19 Pandemic In Thailand, Athikhun Praditpapha

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: COVID-19 pandemic is a public health emergency of international concern with many countries affected including Thai. Due to the nature of the work, dental practitioner is a high-risk professional to contract the disease. Many studies were conducted to study the impact of the situation on mental health of both general population and health care personnel. However, there are scant data about the stress of Thai dental practitioner caused by COVID-19 and the associated factors. Objectives: The primary aims of this study were to investigate the prevalence and level of stress, along with its risk/protective factors. The secondary aim was …

The Effect Of Acemannan In Implant Placement With Simultaneous Bone Graft In Esthetic Zone : A Randomized Controlled Trial, Nataporn Deesricharoenkiat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Acemannan, a linear polysaccharide produced by Aloe vera has been shown to have important biological functions promoting wound healing and tissue regeneration. Objective: The aim of this randomized clinical trial was to investigate the impact of acemannan in guided bone regeneration (GBR) with simultaneous implant. Materials and methods: Twenty patients were randomly allocated to test- (Deproteinized bovine bone with Acemannan particulate with mean size of 32.45µm) and control groups (Deproteinized bovine bone only). Twenty implants were placed with simultaneous GBR. CBCT radiographic measurements were conducted immediately and at 3- and 6-months post-surgery. Vertical and horizontal dimensions of the buccal …

Cephalometric Study Of Treated Orthodontic Patients With Acceptable Esthetic Profiles Compared To Adult Thai Normative Values, Visessan Pornsirianand

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: This study aimed to compare cephalometric variables between esthetically acceptable normal, concave, and convex profile groups as well as between each group and adult Thai normative values. Materials and Methods: Three-hundred and three profile silhouettes from post-treatment lateral cephalometric radiographs of 18–37 year-old orthodontic patients were scored by 5 Thai orthodontists and 15 orthodontic patients. The Likert 5-point scale was used to judge the attractiveness. Two-hundred and seven radiographs passing the minimum score of 3 were divided into acceptable normal, concave, and convex profile (AN, ACC, ACV) groups. Thirty-five skeletal, 17 dental, and 34 soft tissue cephalometric variables were …

Global Interest For Health Professions Education: A Geographic And Temporal Analyses Through Web Search Differences From 2010-2019, Junhel Dalanon, Yoshizo Matsuka

Internet Journal of Allied Health Sciences and Practice

Purpose: The purpose of this study was to analyze the spatio-temporal differences in web search trends for dental degrees (DD), medical degrees (MD), and nursing degrees (ND) across 197 countries from 2010 to 2019. Method: A search string was used to initiate a search query using Google Trends. The parameters used were DD, MD, and ND as search terms; worldwide as Location; 2010 to 2019 as time range; health education & medical training as category; and web search as database. Data were downloaded and analyzed. Results: Via one-way ANOVA and post hoc Dunnett test, the searches for DD were found …

Bond Of Resin Cements Through Three Ceramics At Varying Thickness, Po-Hsu Chen

All ETDs from UAB

The purpose of this study was to determine the bond strength of a light cured resin when cured through 3 different types of dental ceramics (traditional zirconia with 3 mol% yttria, translucent zirconia with 5 mol% yttria, and lithium disilicate) at 2 different thicknesses. A total of 135 specimens were prepared from traditional zirconia (IPS e.max ZirCAD LT, Ivoclar Vivadent, Liechtenstein), translucent zirconia (IPS e.max ZirCAD MT, Ivoclar Vivadent, Liechtenstein), and lithium disilicate (IPS e.max CAD LT, Ivoclar Vivadent, Liechtenstein) into a plate shape, but in different thicknesses (1mm and 1.5mm). Ceramic buttons were fabricated by pressed lithium disilicate (IPS …