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dental fiber post

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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
#1
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/28934683/histological-transformations-of-the-dental-pulp-as-possible-indicator-of-post-mortem-interval-a-pilot-study
#2
Patricio A Carrasco, Claudia I Brizuela, Ismael A Rodriguez, Samuel Muñoz, Marianela E Godoy, Carolina Inostroza
BACKGROUND: The correct estimation of the post mortem interval (PMI) can be crucial on the success of a forensic investigation. Diverse methods have been used to estimate PMI, considering physical changes that occur after death, such as mortis algor, livor mortis, among others. Degradation after death of dental pulp is a complex process that has not yet been studied thoroughly. It has been described that pulp RNA degradation could be an indicator of PMI, however this study is limited to 6 days...
September 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28866179/fabrication-and-in-vivo-evaluation-of-hydroxyapatite-carbon-nanotube-electrospun-fibers-for-biomedical-dental-application
#3
A S Khan, A N Hussain, L Sidra, Z Sarfraz, H Khalid, M Khan, F Manzoor, L Shahzadi, M Yar, I U Rehman
The aim was to synthesize bioactive electrospun fibers for biomedical and dental application with improved biocompatibility. In situ precipitation of nano-hydroxyapatite (nHA) was performed with various concentrations (0.5%, 1%, 2%, 3%, and 5% wt/wt) of functionalized multi-walled-carbon nanotubes (MWCNTs) by using microwave irradiation technique. The obtained composites were characterized by Fourier Transform Infrared (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis/Differential Scanning Calorimetry (TGA/DSC), and the cylindrical discs were made for mechanical testing...
November 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28862733/load-bearing-capacity-and-fracture-behavior-of-glass-fiber-reinforced-composite-cranioplasty-implants
#4
Jaakko M Piitulainen, Riina Mattila, Niko Moritz, Pekka K Vallittu
BACKGROUND: Glass fiber-reinforced composites (FRCs) have been adapted for routine clinical use in various dental restorations and are presently also used in cranial implants. The aim of this study was to measure the load-bearing capacity and failure type of glass FRC implants during static loading with and without interconnective bars and with different fixation modes. METHODS: Load-bearing capacities of 2 types of FRC implants with 4 different fixation modes were experimentally tested...
August 11, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28861729/a-preliminary-randomized-clinical-trial-comparing-diode-laser-and-scalpel-periosteal-incision-during-implant-surgery-impact-on-postoperative-morbidity-and-implant-survival
#5
Aysan Shahnaz, Raika Jamali, Farnush Mohammadi, Afshin Khorsand, Neda Moslemi, Reza Fekrazad
The aim of this preliminary randomized clinical trial was to compare: (1) post-operative morbidity after application of laser or scalpel incision for flap advancement during implant surgery and bone grafting and (2) implant survival rate following flap advancement with laser or scalpel incision after 6 months of loading. Eighteen patients who were scheduled for dental implant placement and simultaneous bone grafting were randomly assigned to test or control groups. Diode laser (810 nm, 2 W, pulse interval 200 μs; pulse length 100 μs, 400-μm initiated fiber tip), or scalpel (control) was used to sever the periosteum to create a tension-free flap...
August 31, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28771388/post-retained-single-crowns-versus-fixed-dental-prostheses-a-7-year-prospective-clinical-study
#6
M Ferrari, R Sorrentino, J Juloski, S Grandini, M Carrabba, N Discepoli, E Ferrari Cagidiaco
Biomechanical integrity of endodontically treated teeth (ETT) is often compromised. Degree of hard tissue loss and type of final prosthetic restoration should be carefully considered when making a treatment plan. The objective of this prospective clinical trial was to assess the influence of the type of prosthetic restoration as well as the degree of hard tissue loss on 7-y clinical performance of ETT restored with fiber posts. Two groups ( n = 60) were defined depending on the type of prosthetic restoration needed: 1) single unit porcelain-fused-to-metal (PFM) crowns (SCs) and 2) 3- to 4-unit PFM fixed dental prostheses (FDPs), with 1 healthy and 1 endodontically treated and fiber post-restored abutment...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28678974/clinical-performance-and-failure-modes-of-pulpless-teeth-restored-with-posts-a-systematic-review
#7
REVIEW
Ana Maria Estivalete Marchionatti, Vinícius Felipe Wandscher, Marília Pivetta Rippe, Osvaldo Bazzan Kaizer, Luiz Felipe Valandro
The aim of this systematic review was to compare the clinical performance and failure modes of teeth restored with intra-radicular retainers. A search was performed on PubMed/Medline, Central and ClinicalTrials databases for randomized clinical trials comparing clinical behavior and failures of at least two types of retainers. From 341 detected papers, 16 were selected for full-text analysis, of which 9 met the eligibility criteria. A manual search added 2 more studies, totalizing 11 studies that were included in this review...
July 3, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28621273/choice-of-endodontic-fiber-posts-and-its-influence-on-dental-malpractice-an-in-vitro-evaluation
#8
Fouad Ayoub, Houssam Jassar, Hassan El Husseini, Ziad Salameh
AIMS AND OBJECTIVES: The fiber post type used in restoring endodontically treated teeth may affect the dental expert decision in the case of dental malpractice. The aim of this study was to evaluate the low-cost commercial fiber post in comparison with a higher cost or well-known documented fiber post system. MATERIALS AND METHODS: A total of 20 premolars were selected for the study; following endodontic treatment, specimens were randomly divided into two groups of 10 specimens each according to the type of fiber post used: (1) Low-cost commercial fiber post (OYAPost, Taper Lucent, OYARICOM) and (2) higher cost well-known fiber post (Rely X Fiber post, 3M ESPE)...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28578893/long-term-success-of-nonvital-immature-permanent-incisors-treated-with-a-mineral-trioxide-aggregate-plug-and-adhesive-restorations-a-case-series-from-a-private-endodontic-practice
#9
Marga H Ree, Richard S Schwartz
This case series evaluated the long-term clinical outcome of nonvital immature teeth treated with mineral trioxide aggregate (MTA) as an apical barrier and an adhesive restoration with or without a fiber post. Eighty-three teeth in 72 patients were treated by the first author with an apical MTA plug and an adhesive restoration of composite resin and in 45 of the 83 teeth 1 or more fiber posts. All of the patients had been referred to the first author's private endodontic practice with at least 1 immature tooth with signs of pulpal necrosis and subsequent apical periodontitis that had been caused by a variety of traumatic dental injuries...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28566672/effects-of-various-etching-protocols-on-the-flexural-properties-and-surface-topography-of-fiber-reinforced-composite-dental-posts
#10
Juthatip Aksornmuang, Chanya Chuenarrom, Natjira Chittithaworn
The purpose of this study was to evaluate the flexural properties and surface topography of fiber posts surface-treated with various etching protocols. Seventy each of three types of fiber posts: RelyX Fiber Post, Tenax Fiber Trans, and D.T. Light-Post Illusion X-Ro, were randomly divided into 7 groups: no surface treatment, surface treated with hydrofluoric acid (HF) 4.5% for 60 s, HF 4.5% for 120 s, HF 9.6% for 15 s, HF 9.6% for 60 s, HF 9.6% for 120 s, and treated with H2O2 24% for 10 min. The specimens were then subjected to a three-point bending test...
May 30, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28503478/the-effects-of-non-thermal-plasma-and-conventional-treatments-on-the-bond-strength-of-fiber-posts-to-resin-cement
#11
Maíra do Prado, Eduardo Moreira da Silva, Juliana das Neves Marques, Caroline Brum Gonzalez, Renata Antoun Simão
OBJECTIVES: This study compared the effect of hexamethyldisiloxane (HMDSO) and ammonia (NH3) plasmas on the bond strength of resin cement to fiber posts with conventional treatments. MATERIALS AND METHODS: Sixty-five fiber posts were divided into 5 groups: Control (no surface treatment); H2O2 (24% hydrogen peroxide for 1 min); Blasting (blasting with aluminum oxide for 30 sec); NH3 (NH3 plasma treatment for 3 min); HMDSO (HMDSO plasma treatment for 15 min). After the treatments, the Ambar adhesive (FGM Dental Products) was applied to the post surface (n = 10)...
May 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28434685/influence-of-inhomogeneous-dental-posts-on-stress-distribution-in-tooth-root-and-interfaces-three-dimensional-finite-element-analysis
#12
Mojtaba Mahmoudi, Ali Reza Saidi, Parviz Amini, Maryam Alsadat Hashemipour
STATEMENT OF PROBLEM: In post-core crown restorations, the use of flexible posts concentrates stresses at the dentin and the use of stiff posts concentrates stresses at the interfaces. A class of inhomogeneous materials (called functionally graded materials) has been proposed for posts to resolve the weaknesses of both flexible and rigid posts. PURPOSE: The purpose of this in vitro study was to design an inhomogeneous post and investigate its influence on the stress distribution of post-core crown restorations...
April 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28298980/biological-and-antibacterial-properties-of-a-new-silver-fiber-post-in-vitro-evaluation
#13
Claudio Poggio, Federico Trovati, Matteo Ceci, Marco Chiesa, Marco Colombo, Giampiero Pietrocola
BACKGROUND: The incorporation of nano silver particles (AgNPs) to improve antibacterial properties of dental materials has become increasingly common. The aim of the present study was to compare the antibacterial activity and cytotoxicity effects of different fiber posts: glass fiber post, quartz fiber post, nano fiber post and silver fiber post. MATERIAL AND METHODS: The antibacterial activity against S. mutans, S. salivarius and S. sanguis was evaluated by using the agar disc diffusion test (ADT)...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28159340/force-to-failure-of-a-simulated-implant-supported-complete-fixed-dental-prosthesis-reinforced-with-glass-fiber
#14
Jack Goldberg, Gelareh Ronaghi, Jin-Ho Phark, Sajid Jivraj, Winston Chee
STATEMENT OF PROBLEM: The joint adjacent to the cantilevered section of an implant-supported complete fixed dental prosthesis (ICFDP) undergoes the most stress because of force magnification in this area, making it more prone to mechanical failure. PURPOSE: The purpose of this in vitro study was to evaluate the ultimate force-to-failure distal to the terminal implant of a simulated ICFDP reinforced with glass fiber compared with that of a conventionally fabricated prosthesis...
August 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27939825/long-term-clinical-outcomes-of-endodontically-treated-teeth-restored-with-or-without-fiber-post-retained-single-unit-restorations
#15
Kevin A Guldener, Carla L Lanzrein, Beatrice E Siegrist Guldener, Niklaus P Lang, Christoph A Ramseier, Giovanni E Salvi
INTRODUCTION: The aim of the present study was to evaluate both survival and failure rates of endodontically treated teeth restored with or without fiber post-retained restorations after a mean observation period of at least 5 years. METHODS: A total of 144 single-rooted and multirooted teeth in 100 subjects were endodontically treated following a predetermined aseptic protocol and restored with either a fiber post and a composite core or a composite filling without intraradicular retention...
February 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27881309/survey-of-dentists-to-determine-contemporary-use-of-endodontic-posts
#16
Sumitha N Ahmed, Terry E Donovan, Taneet Ghuman
STATEMENT OF PROBLEM: Although the scientific literature provides sound decision-making tools for the restoration of endodontically treated teeth, dentists have different opinions on the rationale for the use of endodontic posts (dowels) and selection of post systems. The decision to place a post is at times contrary to the literature. Updated information on the treatment of endodontically treated teeth among general dentists is lacking. PURPOSE: The purpose of this survey was to gain insight into the rationale for choice of endodontic posts and the different endodontic post systems currently used by dental practitioners...
May 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27871482/push-out-bond-strength-of-fiber-posts-to-intraradicular-dentin-using-multimode-adhesive-system
#17
Siavash Savadi Oskoee, Mahmoud Bahari, Soodabeh Kimyai, Saeed Asgary, Katayoun Katebi
INTRODUCTION: Because there is little information about bond strength of fiber posts cemented with a universal adhesive system (UAS) with different resin cements, the aim of this study was to compare the effect of different bonding strategies in the application of UASs on push-out bond strength of fiber posts to intraradicular dentin. METHODS: Seventy-two single-rooted teeth were randomly divided into 6 groups: self-adhesive resin cement (SAC), dual-cure resin cement (DCC), UAS in the etch-and-rinse (E&R) mode and SAC (E&R + SAC), UAS in the self-etch (SE) mode and SAC (SE + SAC), UAS in the E&R mode and DCC (E&R + DCC), and UAS in the SE mode and DCC (SE + DCC)...
December 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27820690/multidisciplinary-treatment-of-complicated-crown-root-fractures-a-case-study
#18
I L Stojanac, B V Bajkin, M T Premovic, B D Ramic, L M Petrovic
Traumatic dental injuries usually occur among children and adolescents, with maxillary central incisors as the most often affected teeth. Complicated crown-root fractures are particularly challenging for esthetic and functional rehabilitation and often require a multidisciplinary approach. A 21-year-old male patient came to the Dental Clinic due to fractured maxillary incisors caused by trauma during a sporting activity. Clinical examination revealed horizontal fractures of teeth 7, 8, and 9, initiating in the labial cervical third and extending subgingivally on the palate, with exposed pulp tissues...
November 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27789912/esthetic-intracanal-posts
#19
REVIEW
Ivana Parčina, Amižić, Anja Baraba
The primary function of an endodontic post is to provide retention for the core and enable full sealing of the coronal portion of the root canal. Traditionally used metal posts do not meet the requirements of modern dental medicine due to some fairly significant drawbacks such as color, corrosion potential, non-adhesive bonding and high modulus of elasticity which can lead to root fracture. Recently, esthetic ceramic and fiber reinforced posts have been manufactured in order to avoid such imperfections. Since much attention has been devoted to the esthetic aspects of dental medicine, the use of these posts with composite/ceramic cores is very common in restorative dentistry and it is actually becoming a standard...
June 2016: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/27523907/capsaicin-sensitive-innervation-modulates-the-development-of-apical-periodontitis
#20
Obadah N Austah, Nikita B Ruparel, Michael A Henry, Roberto J Fajardo, James E Schmitz, Anibal Diogenes
INTRODUCTION: Nociceptive neurons play a critical role in the detection of stimuli evoking actual or potential tissue injury. In addition, they are involved in neurogenic inflammation by the peripheral release of neuropeptides such as calcitonin gene-related peptide (CGRP). The dental pulp and periradicular tissues are innervated by capsaicin-sensitive neurons known to release CGRP. However, the role of these capsaicin-sensitive neurons in the development of apical periodontitis is largely unknown...
October 2016: Journal of Endodontics
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