Dentistry Commons^™

Effect Of Air-Abrasion Preparation On Shear Bond Strength Of Orthodontic Brackets To Enamel Surface, Elliott Katz

Student Theses, Dissertations and Capstones

Introduction: An optimal orthodontic bonding system must minimize damage to the enamel during conditioning, have enough bond strength to prevent bracket de-bonding during treatment, and allow bracket removal at treatment completion, such that minimal damage is inflicted to the tooth.1 Pumice followed by acid etching has been the standard for many years; however, Groman Inc. (Margate, FL, USA) has stated that using their air-abrasion product will result in a tripling of bond strength. This method claims a three-fold increase in bond strength compared to traditional acid etching techniques by substituting air-abrasion using the EtchMaster® (Groman Inc., Margate, FL) 50 μm …

Effect Of Tooth Angulation, Archwire Material And Vibration On Resistance To Sliding In Conventional Twin Brackets, Liliam Hernandez

Student Theses, Dissertations and Capstones

Objective: The purpose of this study was to evaluate the effect of bracket angulation, archwire material, and vibration on the resistance to sliding of orthodontic brackets to slide along an archwire. Background: In Orthodontics, resistance to sliding generated at the wire-bracket interface has a bearing on the force transmitted to the teeth. Resistance to tooth movement in orthodontics can occur in one of two ways. One, is when a practitioner closes a space at an extraction site and the brackets slide along the archwire. The other is when teeth tip, and the angulation between the bracket and archwire produces binding …

Comparing The Efficacy Of Scalpel, Electrosurgical, And Laser Gingivectomies For The Management Of Gingival Enlargement Following Orthodontic Therapy, Mehdi Garashi

Student Theses, Dissertations and Capstones

Introduction: Gingival enlargement can occur during orthodontic therapy and often may not subside following removal of the orthodontic appliances. It may lead to esthetic concerns, as well as potential reservoirs for bacteria and hinder oral hygiene efforts. Treatment has included nonsurgical debridement alone or in combination with gingival resection using laser, electrosurgery, or conventional scalpel. Objectives: To compare the clinical effectiveness of three resective techniques in the management of gingival enlargement following orthodontic therapy with regards to: Gingival margin position (GMP), probing depths (PDs), bleeding scores, plaque index (PI), gingival index (GI) and patient postoperative discomfort. Materials and Methods: 17 …

Depth Of Cure Of Resin Composites: Effect Of Incremental Layering Versus Bulk Placement And Effect Of Curing Light Type, Najat Aldossarry

Student Theses, Dissertations and Capstones

Background: The introduction of resin composite was a revolution in dentistry and it has shown a high level of success as a direct restorative material. Appropriate techniques and light curing units are essential for optimal clinical outcomes. Objective: To assess depth of cure of two bulk-fill composites and one nanofill resin composite, when photopolymerized with two different curing light units (CLU), placed with an incremental layering versus bulk-fill technique. Material and methods: Two Bulk-fill resin composites (Surefil SDR® Flow and Tetric EvoCeram®) and a conventional nanofill (FiltekTM Supreme Ultra) were used to prepare 90 cylindrical specimens. Specimens (n=5/group) were made …

Comparison Of Fracture Resistance And Bond Strength Of E.Max Crowns Restored With Fiber Post And Core With Endo Crowns, Rohit Mathur

Student Theses, Dissertations and Capstones

Objective: This study evaluated the Fracture Resistance and Bond strength of e.max crowns made with CAD/CAM technology on teeth restored with fiber post and core and compare them to Endo crowns. Materials and Methods: 32 extracted premolars were collected from the department of periodontics and oral surgery. These teeth were assigned in 2 groups. 16 teeth were assigned to test compressive load resistance and the other 16 were assigned to test tensile strength. These groups were subdivided into 2 groups. One group with 8 teeth received post and core followed by crown placement and the other group of teeth were …

Characterization Of Craniofacial And Dental Structures Associated With Osteogenesis Imperfecta, Thunyaporn Budsamongkol

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objectives: To investigate craniofacial and dental characteristics and identify mutations of the patients affected with osteogenesis imperfecta (OI) and dentinogenesis imperfecta (DGI). Methods: Patients included in this study were diagnosed with OI. Physical, oro-dental, and radiographic examinations were performed. Mutation was identified by whole exome sequencing. Tooth characteristics including mineral density, tooth color, surface roughness, hardness, elastic modulus, mineral compositions, and ultrastructure of DGI teeth were studied compared to the controls. Results: The proband and his father were diagnosed with OI type IV and DGI. Physical and oral examinations indicated classic signs of OI including bone deformities, bone fractures, short …

The Study Of Oro-Dental Structures Of Thai Patients Affected With Amelogenesis Imperfecta, Issree Nitayavardhana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To investigate oro-dental characteristics and amelogenesis imperfecta (AI)-causing genomic variants associated with AI. Methods: Three Thai families affected with autosomal dominant hypocalcified amelogenesis imperfecta (ADHCAI) were recruited. Whole exome sequencing was used to identify mutations, confirmed by sanger sequencing. Clinical and radiographic features were recorded. The extracted teeth obtained from 3 patients were subjected for investigations of their properties and ultrastructure by micro-computerized tomography, surface profilometer, nano-base indentation system, EDX analysis, and SEM. Results: The probands were diagnosed with ADHCAI. The nonsense mutation, c.1387C>T, p.Gln463*, in exon 5 of the FAM83H was identified in all probands. AI teeth …

Basics Of Musculoskeletal Health In Dentistry: An Overview, Drashti Shah, Ankit Arora, Padmaja Arora

Books

This book is an overview of the basics of musculoskeletal health amongst dentists which is the most commonly targeted profession of musculoskeletal pain and its consequences. This book also covers the common areas of pain, aeitiolgy, the study stating specialty specific areas of pain due to repetitive work of dental specialties andalso mentions the measures of prevention and consequences if being neglected, i.e. in general stating importance of musculoskeletal health amongst dentists.

Mechanical Behavior Of Posterior All‐Ceramic Hybrid‐Abutment‐ Crowns Versus Hybrid‐Abutments With Separate Crowns—A Laboratory Study, Ahmed Sabet

Dentistry

Objective: The purpose of this laboratory study was to evaluate the fatigue resist‐ ance, fracture resistance and mode of failure of posterior hybrid‐abutment‐crown vs. hybrid‐abutment with separate crown, both bonded to short titanium bases. Materials and Methods: Thirty‐two titanium implants were embedded perpendicu‐ larly in auto‐polymerizing resin. Implant‐supported restorations simulating a maxil‐ lary first premolar were designed and milled using a CAD/CAM system and divided into 2 groups according to material (n = 16): zirconia (Z) and lithium disilicate (L). Each group was subdivided into two subgroups according to design (n = 8): hybrid‐abut‐ ment‐crown (ZS, LS) and hybrid‐abutment with …

Barriers To Oral Care Among African American Adolescents In Prince George's County, Maryland, Nkiruka Soribe Mcginnis

Walden Dissertations and Doctoral Studies

When adolescents forgo oral health treatment, factors that hinder them from obtaining these services put them at risk of detrimental consequences in their oral and overall health. The purpose of this qualitative phenomenological study was to identify the various barriers that adolescents encounter causing them to defer oral treatment. Through this study, public health officials, school health care providers, the state, and parents could be made aware of these factors and work together to implement programs and supplemental aid to help adolescents become more knowledgeable of the importance of oral care and encourage them to desire and seek treatment. The …

J Mich Dent Assoc Jan 2018

The Journal of the Michigan Dental Association

Archival issues of the Journal of the Michigan Dental Association may include reports on the activities of the association and its members, clinical articles, information on legal and ethical practice considerations, and perspectives of interest to MDA members and those in the oral health profession.

National Children’S Dental Health Month - Creating Your Own Press Release (2018), American Dental Association Foundation

National Children's Dental Health Month

No abstract provided.

Bilateral Sagittal Split Osteotomy-Parameters And Correlations Of Postoperative Pain Management, Gregor F. Raschke, Winfried Meissner, Andre Peisker, Gabriel Djedovic, Ulrich M. Rieger, Arndt Guentsch, Marta Gomez-Dammeier, Stefan Schultze-Mosgau

School of Dentistry Faculty Research and Publications

Objectives

Postoperative pain management is of utmost interest for patients undergoing orthognathic surgery. Currently, there is a lack of information regarding process and outcome parameters of postoperative pain management after bilateral sagittal split osteotomy.

Materials and methods

In a prospective clinical study, 31 adults were evaluated on the first postoperative day following bilateral sagittal split osteotomy using the standardized questionnaire of the Germany-wide project Quality Improvement in Postoperative Pain Management (QUIPS). It allows a standardized assessment of patients’ characteristics, pain parameters, outcome, and pain therapy process parameters.

Results

Pain management consisted mainly of premedication with midazolam, sufentanil, and metamizol intraoperatively; …

Effect Of Membrane Exposure On Guided Bone Regeneration: A Systematic Review And Meta‐Analysis, Jeffrey Garcia, Austin Dodge, Paul Luepke, Hom-Lay Wang, Yvonne Kapila, Guo-Hao Lin

School of Dentistry Faculty Research and Publications

Aims: This review aimed at investigating the effect of membrane exposure on guided bone regeneration (GBR) outcomes at peri-implant sites and edentulous ridges.

Material and Methods: Electronic and manual literature searches were conducted by two independent reviewers using four databases, including MEDLINE, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials, for articles up to February 2017. Articles were included if they were human clinical trials or case series reporting outcomes of GBR procedures with and without membrane exposure. A random-effects meta-analysis was conducted, and the weighted mean difference (WMD) between the two groups and 95% confidence interval …

Immunohistochemical Analysis Of Il-1 Receptor 1 In The Discs Of Patients With Temporomandibular Joint Dysfunction, Luis Eduardo Almeida, Adam Sorenson, Kyle Hresko, Seth Butcher, Rosalia Leonardi, Carla Lorento, Jose A. Bosio, Lobat Tayebi, Andrea Doetzer

School of Dentistry Faculty Research and Publications

Objective

Temporomandibular joint dysfunction (TMD) may affect a patient’s quality of life, and one of the etiologies can be anterior disc displacement with reduction (ADDwR) and anterior disc displacement without reduction (ADDWoR). Interleukin 1 Receptor 1 (IL-1R1) is a membrane receptor that plays an important role on initiating immune and inflammatory response by binding the agonists ligands of IL-1 alpha and IL-1 beta. Therefore, the aim of this study was to evaluate, through immunohistochemical analysis, the association of IL-1R1 with TMD.

Methods

Thirty-nine human disc samples were collected and composed three different groups: ADDwR (n = 19), ADDwoR ( …

Layer-By-Layer Assembly Of Graphene Oxide On Thermosensitive Liposomes For Photo-Chemotherapy, Mohadeseh Hashemi, Meisam Omidi, Bharadwaj Muralidharan, Lobat Tayebi, Matthew J. Herpin, Mohammad Ali Mohagheghi, Javad Mohammadi, Hugh D.C. Smyth, Thomas E. Milner

School of Dentistry Faculty Research and Publications

Stimuli responsive polyelectrolyte nanoparticles have been developed for chemo-photothermal destruction of breast cancer cells. This novel system, called layer by layer Lipo-graph (LBL Lipo-graph), is composed of alternate layers of graphene oxide (GO) and graphene oxide conjugated poly (l-lysine) (GO-PLL) deposited on cationic liposomesencapsulating doxorubicin. Various concentrations of GO and GO-PLL were examined and the optimal LBL Lipo-graph was found to have a particle size of 267.9 ± 13 nm, zeta potentialof +43.9 ± 6.9 mV and encapsulation efficiency of 86.4 ± 4.7%. The morphology of LBL Lipo-graph was examined by cryogenic-transmission electron microscopy (Cryo-TEM), atomic …

The Efficacy Of Commercial Tooth Storage Media For Maintaining The Viability Of Human Periodontal Ligament Fibroblasts, W. Lee, Sheila E. Stover, Morteza Rasoulianboroujeni, K. Sherman, Farahnaz Fahimipour, E. Dashtimoghadam, C. Zito, Hossein E. Jazayeri, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Aim

To evaluate Save‐A‐Tooth (SAT), EMT Toothsaver (EMT) and Hank's Balanced Salt Solution (HBSS) for their influence on the viability and proliferative capacity of human periodontal ligament fibroblasts (HPDLFs).

Methodology

Primary HPDLFs were seeded into 96‐well cell culture plates and exposed to SAT, EMT, HBSS and water (negative control) for 0.5, 1, 3, 6, 12 and 24 h at room temperature (22 °C). After each exposure time, cell viability was measured through quantifying adenosine triphosphate (ATP) using a luminescent dye. The proliferative capacity was also quantified using the PrestoBlue assay after 12 or 24 h storage in each medium. The …

Development Of Chitosan/Gelatin/Keratin Composite Containing Hydrocortisone Sodium Succinate As A Buccal Mucoadhesive Patch To Treat Desquamative Gingivitis, Zahra Davoudi, Mohammad Rabiee, Behzad Houshmand, Niloofar Eslahi, Kimia Khoshroo, Morteza Rasoulianboroujeni, Mohammadreza Tahriri, Lobat Tayebi

School of Dentistry Faculty Research and Publications

The aim of this research was to develop chitosan/gelatin/keratin composite containing hydrocortisone sodium succinate as a buccal mucoadhesive patch to treat desquamative gingivitis, which was fabricated through an environmental friendly process. Mucoadhesive films increase the advantage of higher efficiency and drug localization in the affected region. In this research, mucoadhesive films, for the release of hydrocortisone sodium succinate, were prepared using different ratios of chitosan, gelatin and keratin. In the first step, chitosan and gelatin proportions were optimized after evaluating the mechanical properties, swelling capacity, water uptake, stability, and biodegradation of the films. Then, keratin was added at different percentages …

Hidden Behind Dental Trauma: Child Physical Abuse?, H. Cem Güngör

School of Dentistry Faculty Research and Publications

No abstract provided.

Survival Rates Of Stainless Steel Crowns And Multi-Surface Composite Restorations Placed By Dental Students In A Pediatric Clinic, Badia A. Zahdan, Aniko Szabo, Cesar D. Gonzalez, Elaye Okunseri, Christopher Okunseri

School of Dentistry Faculty Research and Publications

Purpose: This study examined survival rates of multi-surface composite restorations and stainless steel crowns (SSCs) placed by students in a pediatric dental clinic as well as the length of time it takes for restorations to be replaced with stainless steel crowns. Study design: Data from electronic dental records for all children with at least one 2-surface composite restorations or SSCs on a primary first or second molar from January 1, 2007 to September 30, 2015 were analyzed. The primary outcome was the time to a new restoration or SSC on the same tooth, with time to a crown as a …

Perceptions, Expectations, And Satisfaction Of Patients Undergoing Dental Implant Therapy In The Faculty Of Dentistry, Chulalongkorn University, Khunsiri Sermsiripoca

Chulalongkorn University Theses and Dissertations (Chula ETD)

The aims of this study were to evaluate patient's perception before and after receiving dental implant therapy and to investigate patient's perception, expectation, and satisfaction of dental implant treated by postgraduate dental students and faculty members. This study was designed with a quantitative cross-sectional technique. The data were collected by 3 questionnaires, from patients who intended to receive dental implant treatment during September 2017 to February 2019. Two hundred and fifty participants participated in this study. Most of them were female, aged 55-64 years, graduated bachelor's degree, and facial and teeth appearance did not affect their career. The proportion of …

Comparison Of Single-Dose And Multi-Dose Antibiotic Prophylaxis In Orthognathic Surgery: A Retrospective Cohort Study, Teeraphat Pochana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: (1) to compare the prophylactic effect of a single versus a multiple dose antibiotic regimens and (2) to determine factors related to surgical site infection in orthognathic surgery. Materials and methods: Medical records of patients underwent orthognathic surgery in the Faculty of Dentistry, Chulalongkorn University between 2014 and 2016 were extracted for medical data including demographic data, American Society of Anesthesiologists (ASA)-classified past medical history, orthognathic surgical procedures and complications, prophylactic antibiotic regimen, and surgical site infection. The records also contained 30-day follow-up information, according to the Centers for Disease Control and Prevention (CDC) diagnostic criteria for surgical site …

Pd-1 Expression On Immune Cells In Sepsis Mouse Model And The Susceptibility To Secondary Fungal Infection, Chau Tran Bao Vu

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objectives: This study aimed to i) determine the kinetic changes of immune cell phenotypes, including an exhaustion marker PD-1, in spleens of murine sepsis ii) investigate the susceptibility against secondary fungal infection after sepsis, and iii) investigate the efficacy of an anti-PD-1 treatment in post-sepsis fungal infection. Methods: Cecal ligation and puncture (CLP) was used as a sepsis model and splenocytes post-CLP were assessed by flow cytometry. In addition, secondary post sepsis systemic fungal infections by Candida albicans or Aspergillus fumigatus administration at 5-day post-CLP were performed. Moreover, secondary aspergillosis was treated with Amphotericin B with or without anti-PD-1 to …

Effect Of Citric Acid On Color Stability And Surface Roughness Of Translucent Monolithic Zirconia With Different Staining Techniques, Panisa Rinthong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background and rationale: Translucent monolithic zirconia is developed to solve the problem of esthetic in the conventional generation of zirconia with high opacity. When these materials are used for anterior restoration in the oral cavity, they can contact with foods and beverages that are acidic, which may affect the color stability and surface roughness of the material at different levels. Objective: The objective of this study was to determine the effects of citric acid on color stability and surface roughness of translucent monolithic zirconia with different staining techniques. Materials and Methods: A total of 80 disc specimens of VITA YZ® …

Comparison Of The Efficacy Of Chemical Cleaning Methods In Removing Candida Albicans From Polymethyl Methacrylate, Thanaporn Thanamee

Chulalongkorn University Theses and Dissertations (Chula ETD)

The proper denture hygiene is important to reduce the risk of denture stomatitis. Mechanical cleaning is not sufficient to remove the dental plaque from acrylic denture base, accordingly chemical cleaning is needed. The purpose of this study was to compare the efficacy of chemical cleaning methods in removing Candida albicans from polymethyl methacrylate (PMMA) by comparing the remaining viable cells after cleaning. The total of 120 specimens were prepared. Candida albicans was cultured in broth to log phase. All specimens were randomly placed in 24-well tissue culture plate with 1 ml of Candida albicans cultured for biofilm formation at 37 …

Membership Matters January 2018

Membership Matters

Membership Matters is produced by the Oregon Dental Association nine times a year. Issues include regular columns with regional news impacting the Oregon membership including clinical feature articles, regular editorial columns, government relations updates, association activities, member updates, component news, continuing education opportunities, and classifieds.

Membership Matters February 2018

Membership Matters

Membership Matters is produced by the Oregon Dental Association nine times a year. Issues include regular columns with regional news impacting the Oregon membership including clinical feature articles, regular editorial columns, government relations updates, association activities, member updates, component news, continuing education opportunities, and classifieds.

Membership Matters March 2018

Membership Matters

Membership Matters is produced by the Oregon Dental Association nine times a year. Issues include regular columns with regional news impacting the Oregon membership including clinical feature articles, regular editorial columns, government relations updates, association activities, member updates, component news, continuing education opportunities, and classifieds.

Membership Matters April 2018

Membership Matters

Membership Matters is produced by the Oregon Dental Association nine times a year. Issues include regular columns with regional news impacting the Oregon membership including clinical feature articles, regular editorial columns, government relations updates, association activities, member updates, component news, continuing education opportunities, and classifieds.

Membership Matters May 2018

Membership Matters

Membership Matters is produced by the Oregon Dental Association nine times a year. Issues include regular columns with regional news impacting the Oregon membership including clinical feature articles, regular editorial columns, government relations updates, association activities, member updates, component news, continuing education opportunities, and classifieds.