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https://www.readbyqxmd.com/read/29451648/3-d-finite-element-analysis-of-the-effects-of-post-location-and-loading-location-on-stress-distribution-in-root-canals-of-the-mandibular-1st-molar
#1
Hong Gi Yoon, Hyun Keun Oh, Dong-Yul Lee, Joo-Hee Shin
Objective The purpose of this study was to evaluate, by using finite element analysis, the influence of post location and occlusal loading location on the stress distribution pattern inside the root canals of the mandibular 1st molar. Material and Methods Three different 3-D models of the mandibular 1st molar were established: no post (NP) - a model of endodontic and prosthodontic treatments; mesiobuccal post (MP) - a model of endodontic and prosthodontic treatments with a post in the mesiobuccal canal; and distal post (DP) - a model of endodontic and prosthodontic treatments with a post in the distal canal...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29442086/effect-of-preoperative-ibuprofen-in-controlling-postendodontic-pain-with-and-without-low-level-laser-therapy-in-single-visit-endodontics-a-randomized-clinical-study
#2
Shahnaz Nabi, Khalid Amin, Aijaz Masoodi, Riyaz Farooq, Aamir Rashid Purra, Fayaz Ahmad Ahangar
Aim: The aim of this study is to evaluate the effect of low-level laser irradiation and ibuprofen in reducing the onset and severity of postoperative pain following single visit endodontics. Materials and Methods: One hundred and twenty patients were recruited for this study. Group A (n = 30) patients were administered 400 mg of ibuprofen orally 1 h before the institution of an endodontic procedure. Group B (n = 30) patients were given irradiation of a low-level laser at 50 Hz for 3 min after the standard endodontic procedure at the periapical region on both buccal and lingual aspect...
January 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29435208/reasonable-outcome-of-avulsed-permanent-upper-incisor-after-seven-years-follow-up-period-a-case-report
#3
Egle Bendoraitiene, Sandra Zemgulyte, Marija Borisovaite
Background: Avulsion of the permanent teeth is one of the most serious oral health problems among active children and adolescents. Traumatized patients require immediate and correct treatment in order to restore damaged structures and function that have major impact on daily patient's life. As a result, proper guidelines and fast treatment methods are necessary. This case report discusses treatment of maxillary right central incisor with an open apex that had been avulsed and replanted...
October 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/29420856/antimicrobial-photodynamic-therapy-as-a-co-adjuvant-in-endodontic-treatment-of-deciduous-teeth-case-series
#4
Camila Basilio Okamoto, Lara Jasinski Motta, Renato Araujo Prates, Ana Carolina Costa da Mota, Marcela Leticia Leal Gonçalves, Anna Carolina Ratto Tempestini Horliana, Raquel Agnelli Mesquita Ferrari, Kristianne Porta Santos Fernandes, Sandra Kalil Bussadori
To assure the success of endodontic treatment, the root canal must be completely decontaminated. Thus, some methods have been researched in an attempt to effectively eliminate microorganisms from the interior of the root canal system. Among them, is conventional endodontic therapy in conjunction with photodynamic therapy (PDT). Five anterior deciduous teeth were treated endodontically with the conventional technique and PDT. For PDT, 0.005% methylene blue was used as a photosensitizer and a 660nm laser. After the conventional endodontic therapy, the photosensitizer was applied inside the root canal, 3 minutes of pre-irradiation time and then the laser was applied for 40s with an energy of 4J...
February 8, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29387620/comparative-evaluation-of-fracture-resistance-of-different-post-systems
#5
Mavari Karibasappa Saritha, Uttam Paul, Kiran Keswani, Ashu Jhamb, Swapnil Haribhau Mhatre, Pradyumna Kumar Sahoo
Aim: The study was done to evaluate the fracture resistance of carbon, glass fiber, and zirconia posts. Materials and Methods: Forty-five human premolars indicated for orthodontic extraction were subjected to root canal treatment and obturated with gutta-percha. All the teeth were decoronated and mounted in acrylic block. Then, teeth were equally divided into three groups: (a) carbon, (b) glass fiber, and (c) zirconia post group. Post space was prepared and particular post was cemented in post space...
November 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29386773/shear-bond-strength-of-different-restorative-materials-to-mineral-trioxide-aggregate-and-biodentine
#6
Fatih Tulumbaci, Merve Erkmen Almaz, Volkan Arikan, Merve Safa Mutluay
Significance of Study: Mineral trioxide aggregate (MTA) and Biodentine (calcium silicate-based materials) have great importance in dentistry. There is no study comparing the bond strength of Biodentine and MTA for composite, compomer, and compomer or resin-modified glass ionomer (RMGIC). Although many advantages of Biodentine over MTA; in this study, MTA has shown better shear bond strength (SBS) to restorative materials. Aim: Recently, a variety of calcium silicate-based materials are often used for pulp capping, perforation repair, and endodontic therapies...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29368140/efficacy-of-a-single-session-protocol-for-endodontic-treatment-in-primary-teeth-in-vivo-study
#7
T C Triches, G S Zimmermann, S F T de Freitas, M Ximenes, R S Vieira, M M R Cordeiro
AIMS: To determine the efficacy of a single session protocol (SSP) in the reduction of septic content of primary teeth root canals and identify the persistence of bacterial species associated with unsuccessful treatment. METHODS: Primary teeth root canals (16) with pulp necrosis and peri-radicular lesions were treated. Samples were collected at baseline (T1), and after chemo-mechanical preparation, before filling (T2). Identification of the microorganisms was determined using checkerboard DNA-DNA hybridisation...
January 24, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29358547/pre-endodontic-post-and-core-technique-for-endodontic-and-prosthodontic-treatment
#8
Keita Sasaki, Takatsugu Yamamoto, Tomoko Ikawa, Yuko Shigeta, Shuji Shigemoto, Eriko Ando, Takumi Ogawa, Keisuke Ihara
INTRODUCTION: Displacement of provisional fixed prostheses may result in undesirable and embarrassing outcomes in dental treatments, especially in endodontic treatment. Development of certain counter measures has been necessary to avoid such discomforts. AIM: The aim of this report was to propose a pre-endodontic post and core technique to achieve smooth progress of the treatment. MATERIALS AND METHODS: The patient was a 59-year-old male diagnosed with an infraocclusion caused by wear of his teeth...
January 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29290183/comparison-of-retrograde-primary-and-secondary-bonding-materials-with-tooth-substance
#9
Tabinda Nawaz Khan, Syed Yawar Ali Abidi
OBJECTIVE: To compare the microleakage of MTA (mineral trioxide aggregate) and resin-modified GIC (glass ionomer vitremer) as retrograde endodontic material. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Operative Department of DIIKIOHS (DUHS) and NED University, Karachi, from February to June 2014. METHODOLOGY: Forty human anterior teeth were divided into four groups. Each tooth was endodontically treated...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29279548/concept-and-clinical-application-of-the-resin-coating-technique-for-indirect-restorations
#10
Toru Nikaido, Junji Tagami, Hirofumi Yatani, Chikahiro Ohkubo, Tomotaro Nihei, Hiroyasu Koizumi, Toshio Maseki, Yuichiro Nishiyama, Tomoyoshi Takigawa, Yuji Tsubota
The resin-coating technique is one of the successful bonding techniques used for the indirect restorations. The dentin surfaces exposed after cavity preparation are coated with a thin film of a coating material or a dentin bonding system combined with a flowable composite resin. Resin coating can minimize pulp irritation and improve the bond strength between a resin cement and tooth structures. The technique can also be applied to endodontically treated teeth, resulting in prevention of coronal leakage of the restorations...
December 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29261125/rheological-characterization-as-an-alternative-method-to-indentation-for-determining-the-setting-time-of-restorative-and-endodontic-cements
#11
William N Ha, Timothy M Nicholson, Bill Kahler, Laurence J Walsh
This study explored an alternative approach using rheology to assess setting time. The following cements were tested: ProRoot® MTA (Dentsply, Tulsa, OK, USA), Biodentine® (Septodont, Saint Maur des Fosses, France), Fuji VII®, FujiVII® EP, and Fuji IX® (from GC Corporation, Tokyo, Japan), RealSeal SE™ Sealer (SybronEndo, Amersfoort, The Netherlands), AH 26® and AH Plus (both from Dentsply DeTrey, Konstanz, Germany). Freshly mixed cements were placed into a strain-controlled rheometer (1 rad·s-1 with an applied strain of 0...
December 20, 2017: Materials
https://www.readbyqxmd.com/read/29259360/influence-of-root-canal-obturation-using-gutta-percha-with-three-different-sealers-on-root-reinforcement-of-endodontically-treated-teeth-an-in-vitro-comparative-study-of-mandibular-incisors
#12
Pravin Patil, Kulwinder Singh Banga, Ajinkya M Pawar, Sandeep Pimple, Raguram Ganeshan
Aim: The purpose of this in vitro study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers. Materials and Methods: Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups (n = 15). Group 1: left uninstrumented and unfilled (negative control)...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29241944/fracture-resistance-and-failure-modes-of-polymer-infiltrated-ceramic-endocrown-restorations-with-variations-in-margin-design-and-occlusal-thickness
#13
Doaa Taha, Sebastian Spintzyk, Christine Schille, Ahmed Sabet, Marwa Wahsh, Tarek Salah, Jürgen Geis-Gerstorfer
PURPOSE: The purpose of this in vitro study was to assess the effect of varying the margin designs and the occlusal thicknesses on the fracture resistance and mode of failures of endodontically treated teeth restored with polymer infiltrated ceramic endocrown restorations. METHODS: Root canal treated mandibular molars were divided into four groups (n=8) and were prepared to receive Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) fabricated polymer infiltrated ceramic endocrowns (ENAMIC blocks)...
December 11, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29233146/apical-periodontitis-in-southern-estonian-population-prevalence-and-associations-with-quality-of-root-canal-fillings-and-coronal-restorations
#14
Veiko Vengerfeldt, Reet Mändar, Minh Son Nguyen, Silvia Saukas, Mare Saag
BACKGROUND: Apical periodontitis (AP) is an inflammatory disease around the apex of a tooth root. Reported prevalence of AP ranges from 27% to 83% while the data about most post-Soviet countries are still missing. Knowing the prevalence of AP within a certain population helps to plan the treatment need and evaluate the success of endodontic interventions. We aimed to collect data about prevalence and determining factors of AP for the first time in Estonia. METHODS: The cross-sectional study included 6552 patients (age 35...
December 12, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29225280/quaternary-ammonium-compounds-in-dental-restorative-materials
#15
Yu Zhang, Yinyan Chen, Yuntong Hu, Fang Huang, Yuhong Xiao
Quaternary ammonium compounds (QACs) have been used widely in medicine, owing to their antimicrobial properties. They also have strong permeability, stable performance, low skin irritation, low toxicity, low corrosion, lasting biological effects and so on, comparing with other antimicrobial agents. At the end of last century, polymerizable quaternary ammonium antimicrobial monomers had been synthesized and applied in dentistry, in order to reduce or prevent microbial biofilm formation on dental materials surfaces...
December 8, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29221472/odontoblast-like-differentiation-and-mineral-formation-of-pulpsphere-derived-cells-on-human-root-canal-dentin-in-vitro
#16
Jörg Neunzehn, Sandra Pötschke, Christian Hannig, Hans-Peter Wiesmann, Marie-Theres Weber
BACKGROUND: The revitalization or regeneration of the dental pulp is a preferable goal in current endodontic research. In this study, human dental pulp cell (DPC) spheres were applied to human root canal samples to evaluate their potential adoption for physiological tissue-like regeneration of the dental root canal by odontoblastic differentiation as well as cell-induced mineral formation. METHODS: DPC were cultivated into three-dimensional cell spheres and seeded on human root canal specimens...
December 8, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29211127/evaluation-of-stress-distribution-in-endodontically-weakened-teeth-restored-with-different-crown-materials-3d-fea-analysis
#17
Izabela C M Moris, Carolina Alves Moscardini, Luana Kelle Batista Moura, Yara Teresinha Corrêa Silva-Sousa, Erica Alves Gomes
This study evaluated the stress distribution in endodontically treated teeth, weakened (W) or not weakened (NW), restored with different materials of prosthetic crown using 3D-FEA. Models of a maxillary canine were constructed based on micro-CT images and divided into the groups: G1 (control) - sound tooth; G2 to G7 - endodontically treated teeth restored with glass fiber post (GFP); which G2 to G4 simulated NW root and G5 to G7 simulated W root. For crown material the teeth were restored with: G2 and G5: metallic coping and ceramic veneering, G3 and G6: zirconia coping and ceramic veneering, G4 and G7: alumina coping and ceramic veneering...
November 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29161952/reduced-antibiotic-prescription-rates-following-physician-targeted-interventions-in-a-dental-practice
#18
Hyesung Kim, Jeong Kyu Oh, Myeng Ki Kim, Kwanghak Bae, Hyungkil Choi
BACKGROUND: The prescription rate for antibiotics in dental clinics is not declining despite the increase in the antibiotic resistance problem. In this study, we observed the change in antibiotic prescription rates by dentists in a Korean dental hospital for various treatments after conducting interventions targeting dentists. METHODS: The first intervention was to distribute guidelines. The second intervention was to remove the bundled prescription button containing antibiotics from the Electronic Medical Record system...
November 21, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29155538/aetiological-histopathological-clinical-diagnostic-and-therapeutical-features-of-idiopathic-cervical-resorption
#19
Virginia Robles Gijón, Cristina Lucena Martín, Rosa Mª Pulgar Encinas, José Manuel Navajas
Root resorption is the loss of hard dental tissue as a result of odontoclastic action involving vital and pulpless teeth. Cervical root resorption (CRR) is a type of external resorption which usually occurs immediately below the epithelial attachment of the tooth in the cervical region. The idiopathic cervical resorption (ICR) refers to a clinical situation in which all other causes, whether local or systemic, have been ruled out as the origin of the disease. The early stage is asymptomatic and might be diagnosed by a routine radiograph or a clinical examination...
December 2016: Dental Update
https://www.readbyqxmd.com/read/29153985/diagnosis-of-mesiodistal-vertical-root-fractures-in-teeth-with-metal-posts-influence-of-applying-filters-in-cone-beam-computed-tomography-images-at-different-resolutions
#20
Débora De Martin E Silva, Celso Neiva Campos, Antônio Carlos Pires Carvalho, Karina Lopes Devito
INTRODUCTION: The aim of this article was to evaluate the influence of applying filters in cone-beam computed tomography (CBCT) images at different resolutions. These CBCT images were obtained for diagnosing mesiodistal vertical root fractures (VRFs) in teeth with metal posts. METHODS: Forty teeth were treated endodontically, and 20 received metal posts. Ten teeth without posts and 10 teeth with posts were subjected to VRF in the mesiodistal direction. The sample was submitted to periapical radiographs and CBCT exams with a voxel of 0...
November 16, 2017: Journal of Endodontics
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