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Dental fatigue

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https://www.readbyqxmd.com/read/28283891/the-potential-role-for-early-biomarker-testing-as-part-of-a-modern-multidisciplinary-approach-to-sj%C3%A3-gren-s-syndrome-diagnosis
#1
REVIEW
Kenneth A Beckman, Jodi Luchs, Mark S Milner, Julian L Ambrus
Sjögren's syndrome (SS) is a chronic and progressive multisystem autoimmune disease typically managed by rheumatologists. Diagnostic delays are common, due in large part to the non-specific and variable nature of SS symptoms and the slow progression of disease. The hallmark characteristics of SS are dry eye and dry mouth, but there are a broad range of other possible symptoms such as joint and muscle pain, skin rashes, chronic dry cough, vaginal dryness, extremity numbness or tingling, and disabling fatigue...
March 10, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28258266/effect-of-newly-developed-resin-cements-and-thermocycling-on-the-strength-of-porcelain-laminate-veneers
#2
Fawaz I Alqahtani
AIM: The aim of this study was to determine the effect of different luting cements and accelerated artificial aging (AAA) in the fracture resistance of porcelain laminate veneers (PLVs). MATERIALS AND METHODS: A total of 80 disc-shaped specimens were prepared using computer-aided design/computer-aided milling technology from lithium disilicate glass-ceramic blocks. Specimens (0.5 mm thick, 10 mm diameter) were divided into eight groups of 10 specimens per group...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28243433/a-rare-case-of-fusobacterium-necrophorum-liver-abscesses
#3
Faris Hannoodi, Hussam Sabbagh, Zain Kulairi, Sarwan Kumar
Liver abscesses are an uncommon disease that can present with vague symptoms. Fusobacterium necrophorum causing liver abscesses is a rare condition and only a few cases have been reported. An 88-year-old female presented to her primary care physician with one week of fevers, night sweats, chills, fatigue and vague right upper quadrant abdominal pain. She denied nausea, vomiting, constipation, diarrhea and unintentional weight loss. A computed tomography scan of the abdomen showed two liver abscesses in the right lobe as well as extensive diverticulosis...
January 11, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/28222907/fatigue-testing-of-biomaterials-and-their-interfaces
#4
Dwayne Arola
OBJECTIVE: The objective of this article is to describe the importance of fatigue to the success of restorative dentistry, with emphasis on the methods for evaluating the fatigue properties of materials in this field, and the durability of their bonded interfaces. METHODS: The stress-life fatigue and fatigue crack growth approaches for evaluating the fatigue resistance of dental biomaterials are introduced. Emphasis is placed on in vitro studies of the hard tissue foundation, restorative materials and their bonded interfaces...
February 17, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28218957/cyclic-fatigue-resistance-of-a-novel-rotary-file-manufactured-using-controlled-memory-ni-ti-technology-compared-to-a-file-made-from-m-wire-file
#5
E Alshwaimi
AIM: To compare the cyclic fatigue properties of a novel file made using controlled memory NiTi technology with those of files made from M-wire. METHODOLOGY: Twelve files with similar cross-sectional geometry and tip size from each of the following groups were tested: Proflexendo made from CMT (PE; size 30 .04) (Nexden, Houston, Tx, USA), ProFile Vortex made from M-wire (PV; size 30 .04) (Dentsply Tulsa Dental, Tulsa, OK, USA), and ProTaper Universal made from regular alloy (PU; F3) (Dentsply Tulsa Dental)...
February 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28216845/analysis-of-helkimo-index-for-temporomandibular-disorder-diagnosis-in-the-dental-students-of-faridabad-city-a-cross-sectional-study
#6
Sapna Rani, Salil Pawah, Sunil Gola, Mansha Bakshi
AIM AND OBJECTIVES: The aim of the study was to evaluate the prevalence of temporomandibular disorder (TMD) by the use of Helkimo's index (anamnestic [Ai] and clinical dysfunction [Di] component) in the nonpatient population (dental students) of Faridabad college. SETTINGS AND DESIGN: A questionnaire-based survey was carried out among students of dental college for signs and symptoms of TMD and also clinical examination was done. The results were scored and according to scoring severity of TMD were assessed in the specified population...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28190587/influence-of-cyclic-flexural-deformation-on-the-torsional-resistance-of-controlled-memory-and-conventional-nickel-titanium-instruments
#7
Eufemia Carolina Peláez Acosta, Pedro Damas Resende, Isabella Faria da Cunha Peixoto, Érika Sales Joviano Pereira, Vicente Tadeu Lopes Buono, Maria Guiomar de Azevedo Bahia
INTRODUCTION: The aim of this study was to evaluate the influence of cyclic deformation on the torsional resistance of controlled memory (CM) nickel-titanium files in comparison with superelastic (SE) instruments with similar geometric and dimensional characteristics. METHODS: New 30/.06 HyFlex (HF; Coltene/Whaledent, Inc, Cuyahoga Falls, OH), Typhoon (Clinician's Choice Dental Products, New Milford, CT), RaCe (FKG, La-Chaux De Fonds, Switzerland), and ProTaper Universal F2 instruments (F2; Dentsply Maillefer, Ballaigues, Switzerland) were assessed...
February 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28187320/mechanical-and-biological-behavior-of-ultrafine-grained-ti-alloy-aneurysm-clip-processed-using-high-pressure-torsion
#8
Ho Yong Um, Byung Ho Park, Dong-Hyun Ahn, Mohamed Ibrahim Abd El Aal, Jaechan Park, Hyoung Seop Kim
Severe plastic deformation (SPD) has recently been advanced as the main process for fabricating bulk ultrafine grained or nanocrystalline metallic materials, which present much higher strength and better bio-compatibility than coarse-grained counterparts. Medical devices, such as aneurysm clips and dental implants, require high mechanical and biological performance (e.g., stiffness, yield strength, fatigue resistance, and bio-compatibility). These requirements match well the characteristics of SPD-processed materials...
February 6, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28183665/degradation-in-the-fatigue-crack-growth-resistance-of-human-dentin-by-lactic-acid
#9
Santiago Orrego, Huakun Xu, Dwayne Arola
The oral cavity frequently undergoes localized changes in chemistry and level of acidity, which threatens the integrity of the restorative material and supporting hard tissue. The focus of this study was to evaluate the changes in fatigue crack growth resistance of dentin and toughening mechanisms caused by lactic acid exposure. Compact tension specimens of human dentin were prepared from unrestored molars and subjected to Mode I opening mode cyclic loads. Fatigue crack growth was achieved in samples from mid- and outer-coronal dentin immersed in either a lactic acid solution or neutral conditions...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28118929/effects-of-two-grading-techniques-of-zirconia-material-on-the-fatigue-limit-of-full-contour-3-unit-fixed-dental-prostheses
#10
Regina Furbino Villefort, Marina Amaral, Gabriel Kalil Rocha Pereira, Tiago Moreira Bastos Campos, Yu Zhang, Marco Antonio Bottino, Luiz Felipe Valandro, Renata Marques de Melo
OBJECTIVE: This study evaluated the effects of two grading techniques of zirconia material on the fatigue limit of full-contour 3-unit fixed dental prostheses (FDPs). METHODS: Presintered blocks of 3Y-TZP were milled to obtain sixty-nine 3-unit FDPs, which were divided into three groups (n=23). The control group (CTL) was sintered and glazed following manufacturer's instructions. In the two experimental groups presintered FDPs received a surface silica/glass infiltration treatment before the sintering process...
April 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28081481/fatigue-limits-of-different-peek-materials-for-dental-implants
#11
Andreas Dominik Schwitalla, Tycho Zimmermann, Tobias Spintig, Ilona Kallage, Wolf-Dieter Müller
The increasing use of PEEK (poly-ether-ether-ketone) as a substitute for metal implant components has led to the suggestion that it could also be used as an alternative to titanium in the field of dental implants. A major requirement for dental implant materials is their resistance to cyclic loading due to mastication. A special fatigue test was designed to evaluate the elastic behavior and long-term form stability of cylindrically shaped PEEK specimens of 4, 5 and 6mm in diameter, using 11 different PEEK materials of various grades: unfilled, filled with titanium dioxide or barium sulfate powder, reinforced with short carbon fibers or short glass fibers, and reinforced with continuous carbon fibers...
December 23, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27920981/infective-endocarditis-and-sj%C3%A3-gren-s-syndrome-diagnosed-simultaneously
#12
Fujiko Morita, Yuji Hirai, Kiyozumi Suzuki, Yuki Uehara, Kazunori Mitsuhashi, Atsushi Amano, Toshio Naito
Poor dentition and/or dental infection due to insufficient oral care are presumed to be risk factors for infective endocarditis (IE). We present a case of endocarditis caused by Granulicatella adiacens and Sjögren's syndrome (SS) with oral complications diagnosed simultaneously. A 67-year-old woman was admitted to our hospital with fever, general fatigue, arthralgia, and back pain. She was diagnosed with primary SS according to the criteria of the American-European Consensus Group. Transthoracic echocardiography carried out to examine her persistent fever revealed vegetation formation (14 × 5 mm) on the aortic valve and her blood cultures were positive for G...
2017: IDCases
https://www.readbyqxmd.com/read/27880023/effect-of-cyclic-fatigue-tests-on-aging-and-their-translational-implications-for-survival-of-all-ceramic-tooth-borne-single-crowns-and-fixed-dental-prostheses
#13
REVIEW
Mutlu Özcan, Moritz Jonasch
PURPOSE: The objective of this systematic review was to elaborate the aging effect of cyclic fatigue tests on mechanical durability of all-ceramic single crowns and fixed dental prostheses (FDP). MATERIALS AND METHODS: Original scientific papers published in the MEDLINE (PubMed) database in English between 01/01/1950 and 12/31/2013 on cyclic loading on all-ceramics were included in this systematic review. The following MeSH terms, search terms, and their combinations were used: "in vitro," "stress mechanical," "crowns," "denture, partial, fixed," "dentistry," "fatigue," "all-ceramic," "zirconia," "fixed dental prosthesis," "FDP," "bridges," and "cyclic loading...
November 23, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27871481/impacts-of-contracted-endodontic-cavities-on-instrumentation-efficacy-and-biomechanical-responses-in-maxillary-molars
#14
Brent Moore, Konstantinos Verdelis, Anil Kishen, Thuan Dao, Shimon Friedman
INTRODUCTION: Recently, we reported that in mandibular molars contracted endodontic cavities (CECs) improved fracture strength compared with traditional endodontic cavities (TECs) but compromised instrumentation efficacy in distal canals. This study assessed the impacts of CECs on instrumentation efficacy and axial strain responses in maxillary molars. METHODS: Eighteen extracted intact maxillary molars were imaged with micro-computed tomographic imaging (12-μm voxel), assigned to CEC or TEC groups (n = 9/group), and accessed accordingly...
December 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27859976/fatigue-failure-of-narrow-implants-with-different-implant-abutment-connection-designs
#15
Dimorvan Bordin, Lukasz Witek, Vinícius P Fardin, Estevam A Bonfante, Paulo G Coelho
PURPOSE: To evaluate the reliability of narrow diameter dental implants (NDIs) with similar macrogeometry and 3 implant-abutment connection designs. MATERIALS AND METHODS: Eighty-four NDIs (3.5 × 10 mm) were selected and divided into 4 groups (n = 21/group) according to implant-abutment connection design, as follows: EH - external hexagon, IH - internal hexagon, IC - internal conical, and IC-M - internal conical connected to a monolithic titanium abutment. Identical abutments were torqued to the implants, and standardized maxillary incisor crowns were cemented and subjected to step-stress accelerated life testing (SSALT) in water...
November 18, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27770436/effect-of-sodium-hypochlorite-and-saline-on-cyclic-fatigue-resistance-of-waveone-gold-and-reciproc-reciprocating-instruments
#16
A M Elnaghy, S E Elsaka
AIM: To compare the cyclic fatigue resistance of WaveOne Gold (Dentsply Tulsa Dental Specialties, Tulsa, OK, USA) and Reciproc (VDW, Munich, Germany) reciprocating instruments during immersion in sodium hypochlorite (NaOCl) and saline solutions at body temperature. METHODOLOGY: A total of 180 new WaveOne Gold primary size 25, .07 taper, and Reciproc size 25, .08 taper were randomly divided into three groups: group 1: no immersion (control, air); group 2: immersion in saline at 37 ± 1 °C; and group 3: immersion in 5% NaOCl at 37 ± 1 °C...
October 21, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27694784/myogenic-temporomandibular-disorders-clinical-systemic-comorbidities-in-a-female-population-sample
#17
M de-Pedro-Herráez, J Mesa-Jiménez, C Fernández-de-Las-Peñas, J-L de-la-Hoz-Aizpurua
BACKGROUND: Myogenic temporomandibular disorders (MTMD) frequently coexist with other clinical conditions in the same individual. In the last decades, several authors have analyzed these comorbidities looking for the origin of this overlapping. Objetives: The aim of this study was to perform a comparative anaylisis between a group of patients with MTMD and a control group of dental patients without dysfunctional pathology to assess whether there are significant differences in the presence of systemic medical comorbidities between the two groups...
November 1, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27680671/survival-and-failure-modes-platform-switching-for-internal-and-external-hexagon-cemented-fixed-dental-prostheses
#18
Rodolfo B Anchieta, Lucas S Machado, Ronaldo Hirata, Paulo G Coelho, Estevam A Bonfante
This study evaluated the probability of survival (reliability) of platform-switched fixed dental prostheses (FDPs) cemented on different implant-abutment connection designs. Eighty-four-three-unit FDPs (molar pontic) were cemented on abutments connected to two implants of external or internal hexagon connection. Four groups (n = 21 each) were established: external hexagon connection and regular platform (ERC); external hexagon connection and switched platform (ESC); internal hexagon and regular platform (IRC); and internal hexagon and switched platform (ISC)...
October 2016: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/27661621/utilization-of-routine-primary-care-services-among-dancers
#19
Stephanie Alimena, Mary E Air, Caitlin Gribbin, Elizabeth Manejias
This study examines the current utilization of primary and preventive health care services among dancers in order to assess their self-reported primary care needs. Participants were 37 dancers from a variety of dance backgrounds who presented for a free dancer health screening in a large US metropolitan area (30 females, 7 males; mean age: 27.5 ± 7.4 years; age range: 19 to 49 years; mean years of professional dancing: 6.4 ± 5.4 years). Dancers were screened for use of primary care, mental health, and women's health resources using the Health Screen for Professional Dancers developed by the Task Force on Dancer Health...
2016: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/27639822/significance-and-implications-of-patient-reported-xerostomia-in-sj%C3%A3-gren-s-syndrome-findings-from-the-national-institutes-of-health-cohort
#20
Monisha Billings, Bruce A Dye, Timothy Iafolla, Alan N Baer, Margaret Grisius, Ilias Alevizos
BACKGROUND: Xerostomia is a chief complaint of patients with Sjögren's syndrome (SS). However, newer proposals for SS classification remove xerostomia and hyposalivation from the criteria list. Given these developments and the importance of patient-centered research outcomes, we sought to evaluate the utility of patient-reported xerostomia with implications for classification criteria, and clinical trials targeting SS treatment modalities. METHODS: A nested case-control study was designed within The National Institute of Dental and Craniofacial Research/National Institutes of Health (NIDCR/NIH) SS Cohort - one of the largest SS cohorts in the US...
October 2016: EBioMedicine
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