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https://www.readbyqxmd.com/read/28737157/oral-neoplasms-in-pickhandle-barracuda-sphyraena-jello-from-india
#1
V Singaravel, A Gopalakrishnan, K Raja, R Vijayakumar, S Asrafuzzaman
We report the spontaneous occurrence of oral neoplasms in pickhandle barracuda Sphyraena jello Cuvier, 1829 from Parangipettai, on the southeast coast of India. A total of 11736 fish were examined, of which 43 were affected with oral tumours, with an overall prevalence of 0.37%. Gross and clinical symptoms included reddish to grayish-white distended tumourous growths on the gingiva, intra-oral bones and tongue. The tumours exhibited delayed eruption and intra- or extra-oral swelling, varied in consistency from extremely firm to fleshy and released mucinous material...
July 24, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28734081/whitening-dependent-changes-of-fluorescence-of-extracted-human-teeth
#2
Natalie Pereira Sanchez, Aleksandar Aleksic, Miroslav Dramicanin, Rade D Paravina
OBJECTIVE: To evaluate in vitro the fluorescence properties of extracted human teeth whitened with 40% hydrogen peroxide. MATERIALS AND METHODS: A total of 28 extracted human teeth were pumiced for 1 minute using a low-speed dental handpiece and a disposable rubber cup. Pre-whitening fluorescence measurements (T0), maximum excitation (Exmax ), maximum emission (Emmax ), and maximum intensity (Imax 10(8) ), were performed using a spectrofluorometer. After T0 measurements, the teeth were whitened using the in-office method with 40% hydrogen peroxide, three times for 20 minutes...
July 22, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28732183/new-resins-for-dental-composites
#3
A P P Fugolin, C S Pfeifer
Restorative composites have evolved significantly since they were first introduced in the early 1960s, with most of the development concentrating on the filler technology. This has led to improved mechanical properties, notably wear resistance, and has expanded the use of composites to larger posterior restorations. On the organic matrix side, concerns over the polymerization stress and the potential damage to the bonded interface have dominated research in the past 20 y, with many "low-shrinkage" composites being launched commercially...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28730456/photofunctionalization-and-non-thermal-plasma-activation-of-titanium-surfaces
#4
Anders Henningsen, Ralf Smeets, Philip Hartjen, Oliver Heinrich, Roman Heuberger, Max Heiland, Clarissa Precht, Claudio Cacaci
OBJECTIVE: The aim of this study was to compare UV light and non-thermal plasma (NTP) treatment regarding the improvement of physical material characteristics and cell reaction on titanium surfaces in vitro after short-term functionalization. MATERIALS AND METHODS: Moderately rough (Ra 1.8-2.0 μm) sandblasted and acid-etched titanium disks were treated by UV light (0.05 mW/cm(2) at λ = 360 nm and 2 mW/cm(2) at λ = 250 nm) or by NTP (24 W, -0.5 mbar) of argon or oxygen for 12 min each...
July 20, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28729803/anterosuperior-rehabilitation-with-metal-free-fixed-prosthesis-based-on-zirconia
#5
Sthelen Nayara Cenci, Igor Alessandro Gontarsky, Marcella Goetz Moro, Lidia Olga Bach Pinheiro, Adriana Postiglione Bührer Samra
The loss of upper front dental elements causes functional and psychosocial problems to the affected individuals. In this case report, the treatment planning considered hard and soft tissue loss for a complex fixed partial denture (FPD) rehabilitation. The six-element, all-ceramic FPD was manufactured using a computer-aided design/computer-aided manufacturing system with zirconia framework, veneered with leucite-reinforced ceramic. Ceramic artificial gum was also produced to guarantee tooth-facial proportions as well as lip support, promoting both esthetics and phonetics...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28725128/quality-of-communication-between-dentists-and-dental-laboratory-technicians-for-fixed-prosthodontics-in-riyadh-saudi-arabia
#6
Huda Tulbah, Eman AlHamdan, Amal AlQahtani, Asma AlShahrani, Mona AlShaye
The fabrication of a clinically acceptable dental prosthesis requires proper communication between the dentist and the dental technician. Prosthodontic educators have been concerned with this interaction and communication. Fixed prosthodontics laboratories revealed that the technicians are often dissatisfied with the information provided in work authorizations. OBJECTIVE: To evaluate the quality of communication between dentists and laboratory technicians via work authorizations for fixed prosthodontics in both governmental and private dental laboratories in Riyadh area from the technician's perspective...
July 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28722005/a-conservative-management-of-iatrogenically-damaged-distal-root-of-the-mandibular-second-molar
#7
Rashmi Bansal, Sonali Roy, Praveen Chandra, Anuraag Gurtu, Rahul Pandey
Trauma to the adjacent hard and soft tissue is the most common iatrogenic injury during extraction of the mandibular third molar. As every functional component of the dental arch is of prime importance in contemporary dental practice, the major concern must be in conserving the tooth and its structure as much as possible. The present case discusses the application of this conservative approach for management of iatrogenically damaged distal root of the mandibular second molar during extraction of impacted third molar, in which excessive guttering of alveolar bone and fractured apical third of distal root of 37 was observed radiographically...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28720340/mechanical-strength-and-fracture-point-of-a-dental-implant-under-certification-conditions-a-numerical-approach-by-finite-element-analysis
#8
Guillermo de la Rosa Castolo, Sonia V Guevara Perez, Pierre-Jean Arnoux, Laurent Badih, Franck Bonnet, Michel Behr
STATEMENT OF PROBLEM: Implant prosthodontics provides high-quality outcomes thanks to recent technological developments and certification procedures such as International Organization for Standardization (ISO) standard 14801. However, these certification tests are costly, and the result is highly uncertain as the influence of design variables (materials and structure) is still unknown. The design process could be significantly improved if the influence of design parameters were identified...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28720339/in%C3%A2-vitro-fit-of-cad-cam-complete-arch-screw-retained-titanium-and-zirconia-implant-prostheses-fabricated-on-4-implants
#9
Hadi Al-Meraikhi, Burak Yilmaz, Edwin McGlumphy, William Brantley, William M Johnston
STATEMENT OF PROBLEM: Computer-aided designed and computer-aided manufactured (CAD-CAM) titanium and zirconia implant-supported fixed implant prostheses on 4 implants have become popular. The precision and accuracy of their interface fit has not been widely researched. PURPOSE: The purpose of this in vitro study was to compare the marginal fit of zirconia and titanium implant-supported screw-retained CAD-CAM complete fixed dental prostheses (CFDP) fit with a standardized cast simulating the all-on-4 implant distribution...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28720333/bioactivity-and-properties-of-a-dental-adhesive-functionalized-with-polyhedral-oligomeric-silsesquioxanes-poss-and-bioactive-glass
#10
Marta Rizk, Lisa Hohlfeld, Loan Tao Thanh, Ralf Biehl, Nicole Lühmann, Dirk Mohn, Annette Wiegand
OBJECTIVES: This study aimed to analyze the effect of infiltrating a commercial adhesive with nanosized bioactive glass (BG-Bi) particles or methacryl-functionalized polyhedral oligomeric silsesquioxanes (POSS) on material properties and bioactivity. METHODS: An acetone-based dental adhesive (Solobond Plus adhesive, VOCO GmbH, Cuxhaven, Germany) was infiltrated with nanosized bioactive glass particles (0.1 or 1wt%), or with monofunctional or multifunctional POSS particles (10 or 20wt%)...
July 15, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28719860/liposome-modified-titanium-surface-a-strategy-to-locally-deliver-bioactive-molecules
#11
Vincenzo De Leo, Monica Mattioli-Belmonte, Maria Teresa Cimmarusti, Annamaria Panniello, Manuela Dicarlo, Francesco Milano, Angela Agostiano, Elvira De Giglio, Lucia Catucci
Titanium and its alloys are widely employed materials for implants in orthopedic or dental surgery due to their mechanical properties, resistance to corrosion and osseointegration capability. However adverse reactions at the tissue/implant interface may occur, which limit the success of the osseointegration process. Therefore, different strategies have to be used to overcome these drawbacks. In this work, we developed two different liposome-based coatings on titanium surfaces as drug or bioactive molecule deposits for dental/orthopedic implant applications...
July 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28717289/comparison-of-extended-nasolabial-flap-versus-buccal-fat-pad-graft-in-the-surgical-management-of-oral-submucous-fibrosis-a-prospective-pilot-study
#12
Sandeep B Patil, D Durairaj, G Suresh Kumar, D Karthikeyan, D Pradeep
AIM: To evaluate the application of extended nasolabial flap versus buccal fat pad graft in the surgical management of oral submucous fibrosis. SETTINGS AND DESIGN: This prospective study was carried out in the Department of Oral and Maxillofacial Surgery, Tamil Nadu Government Dental College and Hospital, Chennai. MATERIAL AND METHODS: A total of 8 patients (6 men and 2 women) with age range from 21 to 65 years were selected for study. These 8 patients were randomly divided into two groups of four namely group 1 and group 2...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28714053/the-influence-of-surface-texture-and-wettability-on-initial-bacterial-adhesion-on-titanium-and-zirconium-oxide-dental-implants
#13
Torsten Wassmann, Stefan Kreis, Michael Behr, Ralf Buergers
BACKGROUND: This study aims to investigate bacterial adhesion on different titanium and ceramic implant surfaces, to correlate these findings with surface roughness and surface hydrophobicity, and to define the predominant factor for bacterial adhesion for each material. METHODS: Zirconia and titanium specimens with different surface textures and wettability (5.0 mm in diameter, 1.0 mm in height) were prepared. Surface roughness was measured by perthometer (R a ) and atomic force microscopy, and hydrophobicity according to contact angles by computerized image analysis...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28713119/adhesive-bonding-to-computer-aided-design-computer-aided-manufacturing-esthetic-dental-materials-an-overview
#14
Mohamed Moustafa Awad, H Alqahtani, A Al-Mudahi, M S Murayshed, A Alrahlah, Shilpa H Bhandi
AIM: To review the adhesive bonding to different computer-aided design/computer-aided manufacturing (CAD/CAM) esthetic restorative materials. BACKGROUND: The use of CAD/CAM esthetic restorative materials has gained popularity in recent years. Several CAD/ CAM esthetic restorative materials are commercially available. Adhesive bonding is a major determinant of success of CAD/ CAM restorations. Review result: An account of the currently available bonding strategies are discussed with their rationale in various CAD/ CAM materials...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28713108/current-prescribing-practices-for-antibiotic-prophylaxis-a-survey-of-dental-practitioners
#15
Leah S Spittle, Kathleen B Muzzin, Patricia R Campbell, Janice P DeWald, Francisco Rivera-Hidalgo
AIM: Antibiotic prophylaxis guidelines have been developed for health care and dentistry. The authors examined whether dentists were following the 2007 American Heart Association (AHA) and the 2012 American Association of Orthopaedic Surgeons (AAOS) recommendations for antibiotic prophylaxis. MATERIALS AND METHODS: A survey was sent to 600 dentists in the south-central region of the United States. The survey examined dentists' prescribing practices for patients with cardiac and prosthetic joint replacements, antibiotic regimen prescribed, confidence in their prescription decisions, and dentistry's contribution to antibiotic resistance...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28713085/-the-dependence-of-the-marginal-adaptation-of-composite-fillings-in-caries-cavities-of-class-ii-by-black-on-the-state-of-oral-hygiene-and-intensity-of-caries
#16
Елена В Павленкова, Ирина М Ткаченко, Алла И Сидорова, Светлана А Павленко
INTRODUCTION: The problem of treatment of dental caries by fillings in dentistry is the key point in dentistry. Thus the main issue is the long-term functioning of the restorations. Particularly acute, this problem in the reduction of cavities class II according to Black, where the pressure on the filling is sufficiently high. MATERIALS AND METHODS: It was examined and treated 87 patients with different levels of oral hygiene of oral cavity and caries of varying intensity and whom 186 defects of hard tissues of teeth class II Black were fitted...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28711686/hydrogel-elasticity-and-microarchitecture-regulate-dental-derived-mesenchymal-stem-cells-host-immune-system-cross-talk
#17
Sahar Ansari, Chider Chen, Mohammad Mahdi Hasani-Sadrabadi, Bo Yu, Homayoun H Zadeh, Benjamin M Wu, Alireza Moshaverinia
The host immune system (T-lymphocytes and their pro-inflammatory cytokines) has been shown to compromise bone regeneration ability of mesenchymal stem cells (MSCs). We have recently shown that hydrogel, used as an encapsulating biomaterial affects the cross-talk among host immune cells and MSCs. However, the role of hydrogel elasticity and porosity in regulation of cross-talk between dental-derived MSCs and immune cells is unclear. In this study, we demonstrate that the modulus of elasticity and porosity of the scaffold influence T-lymphocyte-dental MSC interplay by regulating the penetration of inflammatory T cells and their cytokines...
July 12, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28711338/in-vitro-cytocompatibility-of-dental-resin-monomers-on-osteoblast-like-cells
#18
Dominik Kraus, Markus Wolfgarten, Norbert Enkling, Ernst-Heinrich Helfgen, Matthias Frentzen, Rainer Probstmeier, Jochen Winter, Helmut Stark
OBJECTIVES: Dental resin-based materials are widely used in modern dentistry. Especially, resin cements enjoy great popularity and are utilized in many applications. Nevertheless, monomers could be released from the resinous matrix, thus interact with surrounding tissues, cause adverse biological reactions and may lead in cases of implant retained restorations to peri-implant bone destruction. Hence, we performed an in-vitro study to determine cytotoxicity of resin monomers on osteoblast-like cells...
July 12, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28707634/mobile-learning-app-a-novel-method-to-teach-clinical-decision-making-in-prosthodontics
#19
Saee Deshpande, Jaishree Chahande, Akhil Rathi
BACKGROUND: Prosthodontics involves replacing lost dentofacial structures using artificial substitutes. Due to availability of many materials and techniques, clinician's clinical decision-making regarding appropriate selection of prosthesis requires critical thinking abilities and is demanding. Especially during graduate training years, learners do not receive the exposure to a variety of cases, thus their clinical reasoning skills are not developed optimally. Therefore, using the trend of incorporating technology in education, we developed a mobile learning app for this purpose...
January 2017: Education for Health: Change in Training & Practice
https://www.readbyqxmd.com/read/28703158/compliance-with-occupational-exposure-risk-management-procedures-in-a-dental-school-setting
#20
J O Westall, C Dickinson
Background The Dental Institute at King's College London has recently implemented changes focusing on infection control, including safety needle provision, personal protective equipment campaigns, mandatory lectures and formal assessment for students. We explored the effect of these changes over a five-year period.Methods We observed 49 clinical consultations in 2010 and 50 in 2014, examining clinician attire, personal protective equipment, dental operatory management, sharps hazards and aseptic technique.Results One hundred percent of operators wore gloves, apron and masks, 94% wore eye protection, 98% had uncovered wrists and 88% had tidy hair...
June 9, 2017: British Dental Journal
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