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https://www.readbyqxmd.com/read/29033091/influence-of-artifact-reduction-tools-in%C3%A2-micro-computed-tomography-images-for%C3%A2-endodontic-research
#1
Polyane Mazucatto Queiroz, Karla Rovaris, Hugo Gaêta-Araujo, Stefani Marzola de Souza Bueno, Deborah Queiroz Freitas, Francisco Carlos Groppo, Francisco Haiter-Neto
INTRODUCTION: Micro-computed tomography (μCT) is an imaging modality of growing application in endodontic research because of its nondestructive technology that enables visualization at the micrometer level. In the presence of high-density material, images acquired with μCT may present artifacts. Thus, the aim of this study was to evaluate subjectively and objectively the influence of artifact reduction tools available for μCT image reconstruction to determine whether their use can influence endodontic research outcomes...
October 12, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29026699/comparison-of-the-clinical-biological-width-with-the-published-standard-histologic-mean-values
#2
Fatme Mouchref Hamasni, Fady El Hajj
AIMS AND OBJECTIVES: Biologic width (BW) as defined by Cohen is the part of the supracrestal gingival tissues that occupy the space between the base of the gingival crevice and the alveolar crest; it includes the junctional epithelium and the connective tissue element. Interactions between dental crowns and the marginal periodontal tissues analyzed in many review papers concluded that the recognition of the BW, in terms of crown margin placement, is beneficial for periodontal health. Therefore, knowledge of the dimensions of the sum of the junctional epithelium and connective tissue attachment as well as the sulcus depth (SD) is of clinical relevance...
September 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28976849/adhesive-durability-inside-the-root-canal-using-self-adhesive-resin-cements-for-luting-fiber-posts
#3
K Bitter, A Maletic, K Neumann, L Breschi, G Sterzenbach, M Taschner
OBJECTIVES: The aim of the study was to investigate the effects of various self-adhesive resin cements on the push-out bond strengths and nanoleakage expression at the luting interfaces of fiber posts immediately and after one year of aging. METHODS AND MATERIALS: One hundred forty-four extracted human anterior teeth were endodontically treated. After post space preparation, fiber posts were luted using five commercially available self-adhesive resin (SAR) cements and a core build-up material applied with a self-etch adhesive (BF: Bifix SE/Rebilda Post, VOCO; CSA: Clearfil SA Cement/Rely X Fiber Post, 3M ESPE; RX: RelyX Unicem 2/Rely X Fiber Post, 3M ESPE; SPC: Speed Cem/FRC Postec, Ivoclar Vivadent; SMC: Smart Cem/X Post, Dentsply; RB: Rebilda DC-Futurabond/Rebilda Post; n=22)...
October 4, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28969296/all-about-dowels-a-review-part-i-considerations-before-cementation
#4
Zishan Dangra, Mahesh Gandhewar
The optimal way of restoring a non vital tooth with dowel-core technique has long been a controversial matter. The purpose of this review was to assess the factors that may influence the successful restoration of root filled teeth with root canal dowels. The first part of the review discusses indications and physical parameters of dowel. Searches were performed in PubMed/Medline database using single or combined key words to obtain the most relevant list of references. Articles selected in the search process were obtained from the journals and reviewed with every aspect of dowel system for reconstruction of endodontically treated teeth...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28969282/influence-of-post-angulation-between-coronal-and-radicular-segment-on-the-fracture-resistance-of-endodontically-treated-teeth
#5
Satheesh B Haralur, Anas Abdullah Lahig, Yahya Ahmed Al Hudiry, Abdullah Hassan Al-Shehri, Ahmed Abdullah Al-Malwi
INTRODUCTION: The objectives of coronal restoration in the Endodontically Treated Teeth (ETT) include rehabilitation of aesthetics, function and prevention of coronal leakage. The long axis of root and the coronal segment in the maxillary anterior teeth varies according to the occlusal scheme. The restorative dentist is required to fabricate the post angulation in compatibility to contour of the adjacent teeth. AIM: To evaluate the influence of the angle between the long axes of core facial surface and the radicular segment of the post on fracture resistance of ETT...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28940453/the-haemostatic-efficacy-and-foreign-body-reaction-of-epinephrine-impregnated-polyurethane-foam-in-osseous-defects
#6
Mahmoud Torabinejad, Hyun J S Kang, Richard Maskiewicz, Anupama Grandhi
The objective of this study was to compare the haemostatic efficacy and foreign body reaction of epinephrine-impregnated cotton pellets with those of epinephrine-impregnated polyurethane (PU) foam cubes in osseous defects created in guinea pigs. Initially, these substances were randomly applied to the osseous defects in guinea pigs for 2 min and blood loss was measured. The animals were then sacrificed 7 weeks later and the degree of foreign body reaction was scored. The data were analysed by the independent-samples Kruskal-Wallis test...
September 21, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28936037/comparison-of-resistance-to-fracture-between-three-types-of-permanent-restorations-subjected-to-shear-force-an-in-vitro-study
#7
Ramin Atash, Maiyas Arab, Hadrien Duterme, Sibel Cetik
INTRODUCTION: Our study's objective was to compare resistance to fracture between endocrown and conventional post and core restorations when subjected to shear force. MATERIALS AND METHODS: Thirty human mandibular premolars were extracted for orthodontic reasons, endodontically treated, and restored using three different methods: endocrown, glass fiber post and composite resin core, and metal post. All the crowns were made from IPS e.max ceramic. Shear forces were applied to these restorations using a test machine until breakage...
July 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28932151/influence-of-irrigating-agents-on-fiber-postpush-out-bond-strength-to-radicular-dentin-sections-with-the-different-adhesive-system
#8
Satheesh B Haralur, Asim Nasser A Alasabi, Sultan A Abohathrah Al Qahtani, Saeed Musleh S Alqahtani
OBJECTIVE: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. MATERIALS AND METHODS: Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28923548/survival-of-extensively-damaged-endodontically-treated-incisors-restored-with-different-types-of-posts-and-core-foundation-restoration-material
#9
Priscilla Cardoso Lazari, Marco Aurélio de Carvalho, Altair A Del Bel Cury, Pascal Magne
STATEMENT OF PROBLEM: Which post-and-core combination will best improve the performance of extensively damaged endodontically treated incisors without a ferrule is still unclear. PURPOSE: The purpose of this in vitro study was to investigate the restoration of extensively damaged endodontically treated incisors without a ferrule using glass-ceramic crowns bonded to various composite resin foundation restorations and 2 types of posts. MATERIAL AND METHODS: Sixty decoronated endodontically treated bovine incisors without a ferrule were divided into 4 groups and restored with various post-and-core foundation restorations...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28906503/release-of-irretrievable-abutment-healing-caps-using-cooling-proof-of-concept-and-clinical-recommendations
#10
Kifah Blal, Ori Rimon, Nardy Casap
PURPOSE: To study the relation between irretrievable abutment healing caps (AHCs), temperature, and the torque required to remove the AHCs from implants. MATERIALS AND METHODS: Twenty implants, 13 mm long and 4.2 mm in diameter, were inserted into four acrylic boxes and covered with acrylic resin. An AHC was screwed into each implant, using a 30 N/cm torque. The acrylic blocks were placed in a 37°C water bath, and subsequently, a block was removed from the bath, the AHCs were cooled, and the torque needed to release each AHC from the implant was measured using a torque wrench...
September 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28864219/regenerative-endodontics-versus-apexification-in-immature-permanent-teeth-with-apical-periodontitis-a-prospective-randomized-controlled-study
#11
Jiacheng Lin, Qian Zeng, Xi Wei, Wei Zhao, Minyi Cui, Jing Gu, Jiaxuan Lu, Maobin Yang, Junqi Ling
INTRODUCTION: The aim of the study was to compare the outcomes of regenerative endodontic treatment (RET) and apexification on immature permanent teeth with pulp necrosis and apical periodontitis. METHODS: A total of 118 patients (118 teeth) were recruited and randomly assigned to either RET or apexification treatment. Each treatment group was divided into 2 subgroups according to the etiology: dens evaginatus or trauma. Clinical symptoms and complications were recorded, and cone-beam computed tomographic imaging with a limited field of view was used to measure the change of root length, root thickness, and apical foramen size at the 12-month follow-up...
August 29, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28863107/surgical-approach-to-foreign-material-within-the-mandibular-canal-due-to-iatrogenic-factors
#12
Bo Li, Lunchang Wang, Zhihe Zhao, Hongbo Qian, Han Cui, Longjiang Li
This clinical report describes a relatively infrequent patient with inferior alveolar nerve damage caused by foreign material within the mandibular canal, which is one of the most severe complications of endodontic therapy. Although the circumstance is uncommon, it can have extremely unfavorable consequences for patients, such as anesthesia and paresthesia. In the present case, a patient suffered pain and severe paresthesia in the corresponding area after routine endodontic therapy. Several treatments were conducted to relieve the patient's symptoms, ranging from medication to tooth extraction, but all were of no avail...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28845679/micro-ct-and-nano-ct-analysis-of-filling-quality-of-three-different-endodontic-sealers
#13
Yan Huang, Berkan Celikten, Karla de Faria Vasconcelos, Laura Ferreira Pinheiro Nicolielo, Nicholas Lippiatt, Arda Buyuksungur, Reinhilde Jacobs, Kaan Orhan
OBJECTIVES: To investigate voids in different root canal sealers using micro-CT and nano-CT, and to explore the feasibility of using nano-CT for quantitative analysis of sealer filling quality. METHODS: Thirty extracted mandibular central incisors were randomly assigned into three groups according to the applied root canal sealers (Total BC Sealer, Sure Seal Root, AH Plus) by the single cone technique. Subsequently, micro-CT and nano-CT were performed to analyze the incidence rate of voids, void fraction, void volume and their distribution in each sample...
August 27, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28839420/comparison-of-three-different-sealer-placement-techniques-an-in-vitro-confocal-laser-microscopic-study
#14
Avoy Kumar Dash, Shanin Farista, Abhilasha Dash, Ajinkya Bendre, Sana Farista
INTRODUCTION: Three-dimensional obturation of the root canal system is the final objective of root canal therapy. Greater penetration of sealer in root dentine lesser will be the voids at the dentine-sealer interface. Hence, analysis of the dentin/sealer interface allows the determination of a filling technique which could obturate the root canals with least gaps and voids. Therefore, the aim of this study is to compare the depth and percentage of sealer penetration into root dentin using three different root canal sealer placement techniques under confocal laser scanning microscope...
April 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28819809/effect-of-synthetic-and-natural-derived-novel-endodontic-irrigant-solutions-on-mechanical-properties-of-human-dentin
#15
Doglas Cecchin, Vitória Soares Giaretta, Bérove Granella Cadorin, Matheus Albino Souza, Cristina de Mattos Pimenta Vidal, Ana Paula Farina
This study aimed to evaluate the effects of different synthetic and natural-derived root canal irrigants (6% sodium hypochlorite [NaOCl], 6% calcium hypochlorite [Ca(OCl)2] and 6.5% grape seed extract [GSE]) on dentin mechanical properties (flexural strength, ultimate tensile strength [UTS] and fracture resistance). Rectangular-shaped beams and hourglass-shaped sections obtained from mid-coronal and root dentin were treated with 6% NaOCl, 6% Ca(OCl)2 or 6.5% GSE for 30 min. The irrigant solutions were replaced every 5 min...
August 17, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28808456/an-in-vitro-comparison-of-apically-extruded-debris-using-reciproc-protaper-universal-neolix-and-hyflex-in-curved-canals
#16
Hossein Labbaf, Kiumars Nazari Moghadam, Shahriar Shahab, Mahshid Mohammadi Bassir, Mohammad Amin Fahimi
INTRODUCTION: As a consequence of root canal preparation, dentinal chips, irrigants and pulp remnants are extruded into preradicular space. This phenomenon may lead to post endodontic flare-ups. The purpose of this study was to compare the amount of extruded debris with four endodontic NiTi engine-driven systems. METHODS AND MATERIALS: Sixty mesiobuccal roots of maxillary molars with 15-30˚ curvature were divided randomly into four groups (n=15). Each group was instrumented up to apical size of 25 using Reciproc, ProTaper Universal, Neolix and Hyflex...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808455/effect-of-nickel-chromium-and-non-precious-gold-color-alloy-cast-posts-on-fracture-resistance-of-endodontically-treated-teeth
#17
Fatemeh Gholami, Parisa Kohani, Shima Aalaei
INTRODUCTION: Root canal-treated teeth are weaker than vital teeth and are more susceptible to fractures. Therefore, special precautions should be adhered to, such as the use of various types of cast or prefabricated posts. Regarding the effect of post material on fracture resistance of teeth, the aim of this in vitro study was to evaluate the effect of non-precious gold color alloy (NPG) and nickel-chrome (Ni-Cr) cast posts on resistance of endodontically treated teeth. METHODS AND MATERIALS: In this study, 30 freshly extracted single-rooted premolar teeth were randomly divided into two groups...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28782855/effect-of-maleic-acid-on-the-bond-strength-of-fibre-posts-to-root-dentine
#18
Fan Fan, Muhammad Ibrahim, Panpan Dai, Yixin Mao, Bing He, Gang Wu, Jianfeng Ma, Shengbin Huang
The aim of this study was to evaluate the effect of maleic acid (MA) on both the bond strength of fibre post to root dentine and smear layer removal after post space preparation. Sixty, single-canal premolars were endodontically treated and randomly assigned to four groups: group 1 [0.9% saline solution (control]); group 2 [2.5% sodium hypochlorite (NaOCl)]; group 3 [17% ethylenediaminetetraacetic acid (EDTA) followed by 2.5% NaOCl]; and group 4 (7% MA followed by 2.5% NaOCl). Self-adhesive resin cement was used to test the adhesion of a glass-fibre post to the root dentine through a micropush-out test...
August 7, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/28764283/fabrication-and-appraisal-of-poly-lactic-co-glycolic-acid-moxifloxacin-nanoparticles-using-vitamin-e-tpgs-a-potential-intracanal-drug-delivery-agent
#19
Hardik Makkar, Gaurav Patri
INTRODUCTION: Nanotechnology is gaining momentum in the search for ideal biomaterials by dental researchers. The expansible nature of Endodontology deems exploration, learning and scrutinizing newer avenues which have the potential to be applied and investigated. The popularity of polymers as drug delivery vehicles has opened avenues for their application in the root canal system. This study utilized application of biodegradable polymers as potential drug delivery vehicles against Enterococcus faecalis, one of the main reasons for post treatment disease...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28750753/photodynamic-therapy-with-high-power-led-mediated-by-erythrosine-eliminates-enterococcus-faecalis-in-planktonic-forms
#20
Alberto Sabin Moura Borba, Sângela Maria da Silva Pereira, Mellyna Cavalcante Mendes Borba, Marco Aurélio Benini Paschoal, Rudys Rodolfo de Jesus Tavarez, Claudia de Castro Rizzi, Meire Coelho Ferreira, Etevaldo Matos Maia Filho
BACKGROUND: The failure of endodontic treatment is linked to the presence of microorganisms, particularly Enterococcus faecalis, in the root canals. This study evaluated the effectiveness of photodynamic therapy (PDT) using erythrosine irradiated by a high-power curing light on a planktonic suspension culture of E. faecalis. METHODS: Bacterial suspensions of E. faecalis were adjusted and then mixed in a 1:1 proportion, in triplicate, in treatment groups by varying the length of irradiation time (120 and 240s) and the molarity of the erythrosine (5 and 10μM)...
September 2017: Photodiagnosis and Photodynamic Therapy
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