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https://www.readbyqxmd.com/read/27881309/survey-of-dentists-to-determine-contemporary-use-of-endodontic-posts
#1
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...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27871482/push-out-bond-strength-of-fiber-posts-to-intraradicular-dentin-using-multimode-adhesive-system
#2
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
#3
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
#4
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
#5
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
https://www.readbyqxmd.com/read/27460566/complications-of-endodontically-treated-teeth-restored-with-fiber-posts-and-single-crowns-or-fixed-dental-prostheses-a-systematic-review
#6
REVIEW
Roberto Sorrentino, Maria Irene Di Mauro, Marco Ferrari, Renato Leone, Fernando Zarone
OBJECTIVE: The present systematic review aimed at assessing data from the literature on endodontic and prosthetic complications in endodontically treated teeth restored with fiber posts and single crowns (SCs) or fixed dental prostheses (FDPs). MATERIALS AND METHODS: Available randomized controlled clinical trials evaluating endodontic and prosthetic complications in the teeth treated with fiber posts and restored with different prosthetic restorations were reviewed...
September 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27292231/effect-of-short-glass-fibers-on-the-polymerization-shrinkage-stress-of-dental-composite
#7
Paul S R Shouha, Ayman E Ellakwa
This study examines contraction stresses of seven short fiber reinforced composites (sFRC) exhibiting different volume loads and aspect ratios (AR)* of fibres. The shift towards a greater utilization of posterior resin composites in dentistry has seen increased interest in the use of randomly oriented short glass fibers in these restorative materials. While the effect of these fibers on modulus, strength, and toughness has been studied, very little information exists on their effect on polymerization shrinkage and even less on shrinkage stress...
June 13, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27265521/membrane-plate-transition-in-leaves-as-an-influence-on-dietary-selectivity-and-tooth-form
#8
Mauricio G Talebi, Enrico A Sala, Barbara Carvalho, Giovanna M Villani, Peter W Lucas, Adam van Casteren
Primates need accurate sensory signals about food quality to forage efficiently. Current evidence suggests that they target leaf foods based on color at long-range, reinforcing this with post-ingestive sensations relating to leaf toughness evoked during chewing. Selection against tough leaves effectively selects against high fiber content, which in turn gives a greater opportunity of acquiring protein. Here we consider a novel intermediate mechanical factor that could aid a folivore: leaves may transform mechanically from membranes (sheets that cannot maintain their shape under gravitational loads and thus 'flop') early on in development into plates (that can maintain their shape) as they mature...
September 2016: Journal of Human Evolution
https://www.readbyqxmd.com/read/27134431/three-dimensional-finite-element-analysis-of-the-stress-distribution-in-the-endodontically-treated-maxillary-central-incisor-by-glass-fiber-post-and-dentin-post
#9
Sarfaraz Memon, Sonal Mehta, Salim Malik, Narendra Nirmal, Deeksha Sharma, Himanshu Arora
INTRODUCTION: From the point of dental practice, the restoration of endodontically treated teeth has become an important aspect as it involves a range of treatment options of variable complexity. Restoring teeth with insufficient coronal tooth structure, it is always indicated to use the post to retain a core for definitive restoration. Fiber post has a modulus of elasticity in analogs to dentin structure, thus reducing the stress areas at the dowel dentin interface. However, the only material that can substantiate all these properties can be none other than dentin itself...
January 2016: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/26941900/endo-restorative-treatment-of-a-severly-discolored-upper-incisor-resolution-of-the-aesthetic-problem-through-componeer-veneering-system
#10
REVIEW
Guido Migliau, Laith Konstantinos Besharat, Afrah Ali Abdullah Sofan, Eshrak Ali Abdullah Sofan, Umberto Romeo
AIM: Re-establishing a patient's lost dental aesthetic appearance is one of the most important topics for contemporary dentistry. New treatment materials and methods have been coming on the scene, day by day, in order to achieve such an aim. Most dentists prefer more conservative and aesthetic approaches, such as direct or indirect veneer restorations, instead of full-ceramic crowns for anteriors where aesthetics is really important. The aim of the study is to evaluate clinically the effectiveness of a direct composite veneering system in resolving aesthetic problem of an upper incisor with a multidisciplinary treatment approach...
July 2015: Annali di Stomatologia
https://www.readbyqxmd.com/read/26925697/mechanical-properties-of-fiber-reinforced-restorative-composite-with-two-distinguished-fiber-length-distribution
#11
Lippo Lassila, Sufyan Garoushi, Pekka K Vallittu, Eija Säilynoja
OBJECTIVES: The purpose of this study was to investigate the reinforcing effect of discontinuous glass fiber fillers with different length scales on fracture toughness and flexural properties of dental composite. MATERIALS AND METHODS: Experimental fiber reinforced composite (Exp-FRC) was prepared by mixing 27wt% of discontinuous E-glass fibers having two different length scales (micrometer and millimeter) with various weight ratios (1:1, 2:1, 1:0 respectively) to the 23wt% of dimethacrylate based resin matrix and then 50wt% of silane treated silica filler were added gradually using high speed mixing machine...
July 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/26904313/management-of-horizontal-root-fracture-in-the-middle-third-via-intraradicular-splinting-using-a-fiber-post
#12
Ishani Karhade, Meenal N Gulve
Radicular fractures in permanent teeth are uncommon injuries and account for only 0.5-7% of dental traumas. These fractures commonly result from a horizontal impact and are transverse to oblique in direction. Their incidence is more in the middle third of the root than at the apical and cervical thirds. This paper describes a case of complicated crown fracture of maxillary incisors along with horizontal root fracture at the middle third of maxillary right central and lateral incisor. The fractured root fragments of the upper right central and lateral incisor were united with the help of a glass fiber post after receiving an endodontic treatment...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/26604608/preservative-management-of-traumatized-maxillary-central-incisor-using-fiber-reinforced-composite-and-mineral-trioxide-aggregate-report-of-a-case
#13
Sai Kalyan Surapaneni, Rita Chandki
The myriads of technological advancements in dentistry in last two decades have led to a dramatic shift from conventional invasive procedures to more conservative biomimetic therapies. In this series, management of traumatic dental injuries has taken a big leap in that now it is possible to conserve many of these teeth which were otherwise doomed to extraction. Depending on the extent of injury, esthetic and functional requirements, traumatic dental injuries can be managed by a variety of clinical procedures including composite resin restorations, reattachment of fractured fragment, endodontic therapy with or without post and core or lastly extraction...
August 2015: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/26598186/-influence-of-different-restorations-on-the-fracture-resistance-of-endodontically-treated-premolars-with-minor-loss-of-dental-defect
#14
Xiao-xia Qiu, Xiao-ping Zhang, Jie Chen, Yue Chang
PURPOSE: To evaluate the influence of 3 different restorations on the fracture resistance of endodontically treated premolars with minor loss of dental defect in order to direct clinical design. METHODS: Seventy-two recently extracted intact and single-rooted human mandibular premolars for orthodontic reason were collected and randomly divided into 3 groups (group A, B, C, n=24). Each group was respectively prepared into 1/3 defect of occlusal surface (group A), 1/2 defect of occlusal surface (group B) and 1/3 defect of proximal-occlusal surface model (group C)...
October 2015: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/26543733/3d-fea-of-cemented-glass-fiber-and-cast-posts-with-various-dental-cements-in-a-maxillary-central-incisor
#15
Ahmed A Madfa, Mohsen A Al-Hamzi, Fadhel A Al-Sanabani, Nasr H Al-Qudaimi, Xiao-Guang Yue
This study aimed to analyse and compare the stability of two dental posts cemented with four different luting agents by examining their shear stress transfer through the FEM. Eight three-dimensional finite element models of a maxillary central incisor restored with glass fiber and Ni-Cr alloy cast dental posts. Each dental post was luted with zinc phosphate, Panavia resin, super bond C&B resin and glass ionomer materials. Finite element models were constructed and oblique loading of 100 N was applied. The distribution of shear stress was investigated at posts and cement/dentine interfaces using ABAQUS/CAE software...
2015: SpringerPlus
https://www.readbyqxmd.com/read/26509233/use-of-a-direct-anatomic-post-in-a-flared-root-canal-a-three-year-follow-up
#16
G M Gomes, R V Monte-Alto, G O Santos, C K Fai, A D Loguercio, O M M Gomes, J C Gomes, A Reis
The following case report describes the three-year follow-up after rehabilitation of a flared root canal using a direct anatomic post (a resin composite combined with a prefabricated glass fiber post) associated with metal-free ceramic restoration. The report presents the clinical protocol for the fabrication of the posts, which provide an intimate fit to the remaining root and mechanical properties similar to those of the dental structure. These posts serve as an alternative to conventional metal cores.
January 2016: Operative Dentistry
https://www.readbyqxmd.com/read/26487182/decreased-face-primary-motor-cortex-face-m1-excitability-induced-by-noxious-stimulation-of-the-rat-molar-tooth-pulp-is-dependent-on-the-functional-integrity-of-medullary-astrocytes
#17
H Pun, L Awamleh, J-C Lee, L Avivi-Arber
We have recently shown that application of the small-fiber excitant and inflammatory irritant mustard oil (MO) to the rat molar tooth pulp can decrease face-M1 excitability, but increase the excitability of trigeminal medullary dorsal horn (MDH) nociceptive neurons and that application of the astrocytic inhibitor methionine sulfoximine (MSO) to the face-M1 or MDH can attenuate the MO-induced changes. The present study aimed to determine whether medullary MSO application could modulate the MO-induced decreased face-M1 excitability...
March 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/26460170/mechanical-properties-fracture-resistance-and-fatigue-limits-of-short-fiber-reinforced-dental-composite-resin
#18
Jasmina Bijelic-Donova, Sufyan Garoushi, Pekka K Vallittu, Lippo V J Lassila
STATEMENT OF PROBLEM: Cycling masticatory loads decrease the strength of particulate filler composites (PFCs) and initiate the failure process by fatigue. The life expectancy of a composite resin restoration under stress remains difficult to predict. PURPOSE: The purpose of this study was to determine the fracture resistance and the compressive fatigue limits (CFL) of anterior crown restorations made of a short-fiber reinforced composite resin (SFC), to investigate selected mechanical properties of the material following standard test methods, and to observe their correlation with the CFL...
January 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/26436062/restoration-of-long-standing-traumatized-teeth-a-case-report
#19
Prashant Manjunath Battepati, Prasanna Kumar Kadkol, K Veera Kishore Kumar Reddy, Raghavendra Ainapur
Children are uniquely susceptible to craniofacial trauma. Injuries to the teeth occur often as a result of falls and sport activities. The pulp often gets infected after dental trauma resulting in to numerous complications. The authors present a case report of successful restoration of traumatized teeth with open apex which were weakened due to long standing infection and internal resorption. Initially antibiotic combination of 3- mix was used to disinfect the root canals. One tooth is treated with conventional endodontic treatment and the other tooth with open apex and perforation is managed by MTA apexification followed by canal reinforcement using glass ionomer cement and fiber reinforced composite post...
August 2015: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/26384532/retentive-strength-of-fiber-reinforced-composite-posts-with-composite-resin-cores-effect-of-remaining-coronal-structure-and-root-canal-dentin-conditioning-protocols
#20
Samah Saker, Mutlu Özcan
STATEMENT OF PROBLEM: The prognosis of a fixed dental prosthesis cemented to endodontically treated teeth is primarily determined by the presence of a ferrule on the tooth. Adhesion of the post in the root canal, conditioning methods for the canal and the amount of coronal structure could also be decisive on survival of reconstructions cemented on endodontically treated teeth. PURPOSE: The purpose of this in vitro study was to test the effect of remaining coronal structure on the retention of airborne-particle abraded fiber-reinforced composite resin posts built up with composite resin cores after the treatment of root canal dentin with different conditioning protocols...
December 2015: Journal of Prosthetic Dentistry
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