DOCSLIB.ORG

Comprehensive Review of Current Endodontic Sealers

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

University of New England DUNE: DigitalUNE Dental Medicine Faculty Publications Dental Medicine Faculty Works 2020 Comprehensive Review Of Current Endodontic Sealers Takashi Komabayashi Clinical Professor, University of New England College of Dental Medicine, [email protected] David Colmenar University of New England, [email protected] Nicholas Cvach University of New England, [email protected] Aparna Bhat University of New England, [email protected] Carolyn Primus Augusta University See next page for additional authors Follow this and additional works at: https://dune.une.edu/cdm_facpubs Part of the Dental Materials Commons, and the Endodontics and Endodontology Commons Recommended Citation Komabayashi, Takashi; Colmenar, David; Cvach, Nicholas; Bhat, Aparna; Primus, Carolyn; and Imai, Yohji, "Comprehensive Review Of Current Endodontic Sealers" (2020). Dental Medicine Faculty Publications. 14. https://dune.une.edu/cdm_facpubs/14 This Article is brought to you for free and open access by the Dental Medicine Faculty Works at DUNE: DigitalUNE. It has been accepted for inclusion in Dental Medicine Faculty Publications by an authorized administrator of DUNE: DigitalUNE. For more information, please contact [email protected]. Authors Takashi Komabayashi, David Colmenar, Nicholas Cvach, Aparna Bhat, Carolyn Primus, and Yohji Imai This article is available at DUNE: DigitalUNE: https://dune.une.edu/cdm_facpubs/14 Dental Materials Journal 2020; 39(5): 703–720 Review Comprehensive review of current endodontic sealers 1 1 1 1 2 3 Takashi KOMABAYASHI , David COLMENAR , Nicholas CVACH , Aparna BHAT , Carolyn PRIMUS and Yohji IMAI 1 University of New England College of Dental Medicine, 716 Stevens Avenue, Portland, ME 04103, USA 2 Augusta University Dental College of Georgia, 1430 John Wesley Gilbert Drive, Augusta, GA 30912, USA 3 Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-0034, Japan Corresponding author, Takashi KOMABAYASHI; E-mail: [email protected] Endodontic sealers for non-surgical root canal treatment (NSRCT) span many compositions and attributes. This comprehensive review discusses current types of endodontic sealers by their setting reaction type, composition, and properties: zinc oxide-eugenol, salicylate, fatty acid, glass ionomer, silicone, epoxy resin, tricalcium silicate, and methacrylate resin sealers. Setting time, solubility, sealing ability, antimicrobial, biocompatibility, and cytotoxicity are all aspects key to the performance of endodontic sealers. Because sealing ability is so important to successful outcomes, the relative degree of microleakage among all the relevant sealers was calculated by way of a meta-analysis of relevant literature. Compared to AH Plus, tricalcium silicate sealers show the lowest relative microleakage among the sealers assessed, followed by silicone sealers and other non-AH Plus epoxy resin sealers. Tricalcium silicate sealers also exhibit the most favorable antimicrobial effect and excellent biocompatibility. Future sealers developed should ideally combine a hermetic seal with therapeutic effects. Keywords: Endodontic sealers, Biocompatibility, Bioactivity, Dentin-sealer interface, Sealing ability such as the rheology19), radiopacity20), and tooth INTRODUCTION discoloration21-23) have been shown to be satisfactory Choosing an endodontic sealer for clinical use is a and will not be discussed in detail. decision that contributes to the long-term success of 1) non-surgical root canal treatment (NSRCT) . Sealers CURRENT ROOT CANAL SEALERS AND HISTORY are used as a thin tacky paste which functions as a lubricant and luting agent during obturation, allowing Chelate formation the core obturation material, such as gutta-percha points Many dental luting agents set by way of a chelation or other rigid materials, to slide in and become fixed reaction, the formation of metal complexes with in the canal2,3). Sealers can fill voids4), lateral canals5), polydentate (usually organic) ligands24). Two of the most and accessory canals where core obturation materials common chelates used in dentistry are eugenolates and cannot infiltrate6,7). If the sealer does not perform its salicylates. For eugenolates, the setting reaction starts function, microleakage may cause NSRCT failure via with water that hydrolyzes the zinc oxide to form zinc clinically undetectable passage of bacteria, fluids, hydroxide. The zinc hydroxide and eugenol chelate and molecules or ions between the tooth and restorative solidify25). For salicylates, the ion is calcium, usually material8,9). Knowing the qualities and characteristics of formulated using calcium oxide. Although uncommon, an endodontic sealer is critical to determining the best fatty acids have also been used as ligands for chelate selection and application for each clinical case. sealers, in conjunction with zinc oxide. Endodontic sealers are categorized by composition based on setting reaction and composition: zinc oxide- 1. Zinc oxide-eugenol-based sealers eugenol, salicylate, fatty acid, glass ionomer, silicone, The zinc oxide-eugenol (ZOE) sealer formula developed epoxy resin, tricalcium silicate, and methacrylate resin by Rickert and Dixon26,27) in 1931 became Kerr sealer, and sealer systems (Table 1). Some novel sealers contain the formula developed by Grossman in 193628) became fillers or ceramic powders including calcium hydroxide, Proco-Sol sealer (StarDental, Lancaster, PA, USA). The mineral trioxide aggregate (MTA), and calcium ZOE sealers have been a standard in endodontics since phosphate; however, they are fundamentally composed their development, based on their long-term success. ZOE of the above sealer matrices. Until recently, many sealers contain zinc oxide powder and eugenol liquid, an review articles were published within sealer types10-16). essential oil derived from cloves29,30). When mixed and However, few reviews have been published that cover placed in moist root dentin, the zinc oxide and eugenol all sealer types17,18) . Therefore, in this comprehensive complex to form an amorphous gel31). Residual zinc oxide review, a historical perspective of each sealer type powder remains in the gel, forming a rigid matrix32). will be discussed first, followed by a description of the Some of these powder-liquid sealers contain silver in properties of all sealer types, such as setting time and the powder component (Kerr formula) which has caused solubility, sealing ability, antimicrobial activity, and darkening of the teeth. Silver-free formulas that avoid biocompatibility and cytotoxicity. Sealer attributes staining were developed to address this issue; including Received Aug 31, 2019: Accepted Nov 5, 2019 doi:10.4012/dmj.2019-288 JOI JST.JSTAGE/dmj/2019-288 704 Dent Mater J 2020; 39(5): 703–720 Table 1 Endodontic sealer types Product name Type Composition (manufacturer, country) Pulp Canal Sealer Powder Zinc oxide, Precipitated silver, Oleo resin, Thymol iodide (Kerr, USA) Liquid Oil of cloves, Canada balsam Zinc oxide, Staybelite resin, Bismuth subcarbonate, Powder Proco-Sol Barium sulfate (StarDental, USA) Liquid Eugenol, Sweet oil of almond Zinc oxide, Bismuth trioxide, Oil+wax, Thymol iodide, Base Tubli-Seal Barium sulfate (Kerr, USA) Catalyst Eugenol, Polypale resin, Annidalin Zinc oxide, Hydrogenated resin, Bismuth subcarbonate, Endofill Powder Barium sulfate, Sodium borate, Dexamethasone Acetate, (Dentsply Petrópolis Ind, Hydrocortisone Acetate, Polyoxymethylene, Thymol lodide Brazil) Liquid Eugenol, Oil of sweet almonds Zinc oxide, Titanium oxide, Orthophenylphenol, Powder Rocanal 2 Calcium tungstate (La Maison, Switzerland) Liquid Eugenol Zinc Canals Powder Zinc oxide, Barium sulfate, Bismuth subcarbonate, Rosin oxide-eugenol (Showa Yakuhin Kano, Japan) Liquid Clove oil, Olive oil Nishika Canal Sealer Paste A Eugenol, Rosin, Ester gum Eugenol (Nippon Shika Yakuhin, Japan) Paste B Olive oil, Zinc oxide, Bismuth subcarbonate Zinc oxide, Staybelite resin, Bismuth subcarbonate, Master-Dent Root Canal Powder Sealer Barium sulfate, Sodium borate (Dentonics, USA) Liquid Eugenol Pulpdent Root Canal Powder Zinc oxide, Calcium phosphate, Zinc stearate, Barium sulfate Sealer (Pulpdent, USA) Liquid Eugenol, Canada balsam CRCS Powder Zinc oxide, Calcium hydroxide, Bismuth dioxide, Barium sulfate (Ivoclar Vivadent, Lichtenstein) Liquid Eugenol, Eucalyptol Zinc oxide, Natural resin, Calcium hydroxide, Barium sulfate, Bioseal Powder Hydroxyapatite, Thymol iodide, Zinc acetate (OGNA Pharmaceuticals, Italy) Liquid Purified oleoresin, Bi-distilled eugenol N-ethyltoluenesulfonamide, Calcium oxide, Zinc oxide, Base Silicon dioxide Sealapex (Kerr, USA) Methyl salicylate, 2,2-dimethylpropane-1,3-diol, Catalyst Isobutyl salicylate, Bismuth trioxide, Titanium dioxide pigment, Zinc stearate Salicylate Methyl salicylate, Butylene glycol, Colophony, Paste A Bismus trioxide, Fumed silica, Titanium dioxide, MTA Fillapex (Angelus, Brazil) Fumed silica, Titanium dioxide, Tricalcium silicaate, Paste B Dicalcium silicate, Calcium oxide, Tricalcium alminate, Pentaerythritol rosinate, p-Toluenesulfonamide Dent Mater J 2020; 39(5): 703–720 705 Table 1 continued Calcium hydroxide, Zinc oxide, Calcium oxide, Silicon dioxide, Base Zinc stearate, Hydrogenised colophony,Tricalcium phosphate, Apexit Polydimethylsiloxane (Ivoclar Vivadent, Lichtenstein) Trimethylhexanediol disalicylate, Bismuth carbonate basic, Activator Bismuth oxide, Silicon dioxide, 1,3 Butanediol disalicylate, Salicylate Hydrogenised colophony, Tricalcium phosphate, Zinc stearate Hydrated
Recommended publications
  • Effectiveness of Two Different Methods Used for Dry Socket

    Effectiveness of Two Different Methods Used for Dry Socket

    IJOCR Rabi A Gafoor et al 10.5005/jp-journals-10051-0119 ORIGINAL RESEArcH Effectiveness of Two Different Methods used for Dry Socket Management: A Comparative Study 1Rabi A Gafoor, 2Kiren B Thaliyath, 3Joyce Thomas, 4Sujay Gopal, 5Joseph Joy, 6Aravind Ashok ABSTRACT How to cite this article: Gafoor RA, Thaliyath KB, Thomas J, Gopal S, Joy J, Ashok A. Effectiveness of Two Different Methods Introduction: Dry socket remains among the most commonly used for Dry Socket Management: A Comparative Study. Int encountered complications following extraction of teeth. It occurs J Oral Care Res 2017;5(4):294-297. during the healing phase of extraction sockets, and some inves- tigators regard it as the commonest postextraction complication. Source of support: Nil Aim: The aim of the present study was to evaluate the effective- Conflict of interest: None ness of two different methods used for dry socket management. Materials and methods: The current study consisted of INTRODUCTION 40 subjects aged between 21 and 35 years who reported with a severe pain following forceps tooth extraction. The subjects After tooth extraction, dry socket is the most common were randomly allotted to two different groups: I and II. Group complication. For the clinical analysis of a dry socket, I consisted of zinc oxide eugenol pack method and group II around 17 different definitions are available.1 Blum2 consisted of debridement method. Patient satisfaction was described dry socket as the presence of “postoperative assessed subjectively using a graded scale from very satisfied to very unsatisfied. Visual analog scale (VAS) was utilized to pain in and around the extraction site, which increases record the degree of pain.
  • In Vitro Antimicrobial and Cytotoxic Effects of Kri 1 Paste And

    In Vitro Antimicrobial and Cytotoxic Effects of Kri 1 Paste And

    SCIENTIFIC ARTICLE In vitro antimicrobialand cytotoxic effects of Kri 1 pasteand zinc oxide-eugenolused in primarytooth pulpectomies Kelly J. Wright, DMDSergio V. Barbosa, DDS, PhD Kouji Araki, DDS,PhD Larz S.W. Sp~ngberg,DDS, PhD Abstract The antimicrobial and cytotoxic effects of Kri I paste, an iodoform-basedprimary tooth filling material, were comparedwith zinc oxide-eugenol (ZOE), using in vitro techniques. Antimicrobial evaluation involved measuring inhibition zones Streptococcus faecalis on brain heart agar. Cytotoxicity evaluation involved direct cell-medicamentcontact experiments of 4-hr and 24-hr duration using fresh and set medicaments,and indirect cell-medicamentcontact experiments of 24-hr duration using fresh and set medicaments.ZOE produced a greater zone of bacterial inhibition than Kri 1 paste. Kri 1 paste cytotoxicity remainedhigh regardless of the amountof setting time in the 4-hr direct contact experiment, while ZOEcytotoxicity decreased with setting time. Both Kri I paste and ZOEhad high cytotoxicity regardless of setting time in the 24-hr direct cell-medicament contact test. ZOEcytotoxicity decreased to control levels after only 1 day of setting in the indirect contact experiments, comparedwith greater than 7 days for Kri I paste. The results suggest ZOEhas better antimicrobial activity than Kri I paste. ZOEalso has lower cytotoxicity, although prolongedcell-medicament contact mayresult in both medicamentshaving similarly high cytotoxicity. (Pediatr Dent 16:102-6, 1994) Introduction time of the material. No osteolytic changes were found To maintain function, esthetics, arch length, and arch surrounding ZOEimplants. Several studies have in- vestigated the antimicrobial action of Kri I in vivo 9’ 11-13 symmetry, primary teeth should be maintained in the 1~-16 dental arch until their proper exfoliation timeo1, 2 and in vitro.
  • Sieving Hydrogen Isotopes Through Two Dimensional Crystals

    Sieving Hydrogen Isotopes Through Two Dimensional Crystals

    Sieving hydrogen isotopes through two dimensional crystals M. Lozada-Hidalgo1, S. Hu1, O. Marshall1, A. Mishchenko1, A. N. Grigorenko1, R. A. W. Dryfe2, B. Radha1, I. V. Grigorieva1, A. K. Geim1 1School of Physics & Astronomy and 2School of Chemistry, University of Manchester, Manchester M13 9PL, UK One-atom-thick crystals are impermeable to all atoms and molecules but hydrogen ions (thermal protons) penetrate relatively easily through them. We show that monolayers of graphene and boron nitride can be used to separate hydrogen isotopes. Employing electrical measurements and mass spectrometry, we found that deuterons permeate through these crystals much slower than protons, resulting in a large separation factor of ≈10 at room temperature. The isotope effect is attributed to a difference of ≈60 meV between zero-point energies of incident protons and deuterons, which translates into the equivalent difference in the activation barriers posed by two dimensional crystals. In addition to providing insight into the proton transport mechanism, the demonstrated approach offers a competitive and scalable way for hydrogen isotope enrichment. Unlike conventional membranes used for sieving atomic and molecular species, monolayers of graphene and hexagonal boron nitride (hBN) exhibit subatomic selectivity (1-5). They are permeable to thermal protons (5) – and, of course, electrons (6) – but in the absence of structural defects are completely impermeable to larger, atomic species (1-5,7-10). Proton transport through these two-dimensional (2D) crystals was shown to be a thermally activated process, and the found energy barriers E of ≈0.3 and 0.8 eV for monolayers of hBN and graphene, respectively, were attributed to different densities of their electron clouds that have to be pierced by incident protons (5).
  • SCIENTIFIC ARTICLE a Long-Term Followup on the Retention Rate Of

    SCIENTIFIC ARTICLE a Long-Term Followup on the Retention Rate Of

    SCIENTIFIC ARTICLE A long-term followup on the retention rate of zinc oxide eugenolfiller after primary tooth pulpectomy RoyaSadrian, DDSJames A. Coil, DMD,MS Abstract A retrospective study of all the patients’ records(> 6000)in a pediatric dental practice wasdone to assess ZOEretention after a pulpectomizedprimary tooth was lost and the succedaneoustooth erupted. There were 65 children with 81 ZOEpulpectomies done in 30 incisors and 51 molars. Pulpectomieswere done at a meanchronologic age of 52.2 months and followed for a mean time of 90.8 monthsfrom time of placement. The initial radiographafter the pulpectomizedtooth was lost, showedretained ZOE filler particles in 49.4 %of the cases while 27.3 %had retained ZOEa meantime of 40.2 monthsafter pulpectomytooth loss. Short-filled pulpectomiesretained significantly less ZOEthan long fills (P = 0.04). With time, retained ZOEparticles either resorbedcompletely or showedreduction of filler size in 80%of the cases. No pathology wasassociated with the retained ZOE particles. Retention of ZOEwas not related to pulpectomysuccess (P = 0.11), preoperative root resorption (P = 0.76), age the patient (P = 0.24 incisors; P = 0.87 molars), extraction/exfoliation of the pulpectomy(P = 0.75), or timing of pulpectomy’s loss (P = 0.72). (Pediatr Dent 15:249-52, 1993) Introductionand literature review Zinc oxide and eugenol (ZOE)is one of the most widely authors wrote subsequent to these two reports that they used preparations for primary tooth pulpectomies. never observed ZOEon a radiograph after the loss of a Erausquin and Muruzabal1 used ZOEas a root canal fill- pulpectomized molar.9 They stated that ZOEcan be ob- ing in 141 rats followed from i to 90 days.
  • Allergies to Dental Materials

    Allergies to Dental Materials

    Oral Medicine Allergies to dental materials William A. Wiltshire*/Mat7na R. FeiTeira**/At J. Ligthelm*** Abstract Allergies related to dentistry generally constitute delayed hypersensitive reactions to specific dental tnaterials- Although true allergic hypersensitivity to dental materials is rare, certain products have definite allergenic properties. Extensive reports in the literature substantiate that certain materials catise allergies in patients, who exhibit ntueosal and skin symptoms. Currently, however, neither substantial data nor clinical experienee unequivocally contraindícate the discontinuance of any ofthe tnaterials. which inchtde dental ainalgain and nickel- and chromium-containing metals. The dentist fortns a vital link in the teatn approach to the differential diagnosis of allergenic biomaterials that elicit symptoms in a patient, not only Intraorally. but also on unrelated parts ofthe body (Quintessence Int ¡996:27:513-520.) Clinical relevance circulating antibodies, because the causative agents attain their allergenic properties by combining with the Although the dentist should be aware of the mucosal tissues ofthe patient. The delayed hypersen- sitive reaction is not manifested clinically until several allergenic materials used in practice, which include hours after exposure.' acrylic resin, amalgam, impression materials, euge- nol products, and metal products, particularly A contact allergy in dentistiy is the type of reaction nickel, currently neither substantial data nor clinical in which a lesion of the skin or mucosa occurs at a localized site after repeated contact with the allergenic experience unequivocally contraindicates the dis- material.' The ability to cause contact sensitivity continuance of any ofthe materials. appears to be related to the ability of the simple chemical allergen to bind to proteins, especially those ofthe epidermis,- and.
  • Healing of Experimental Apical Periodontitis After Apicoectomy

    Healing of Experimental Apical Periodontitis After Apicoectomy

    Dental Materials Journal 2011; 30(4): 485–492 Healing of experimental apical periodontitis after apicoectomy using different sealing materials on the resected root end Kaori OTANI1, Tsutomu SUGAYA1, Mahito TOMITA2, Yukiko HASEGAWA3, Hirofumi MIYAJI1, Taichi TENKUMO1, Saori TANAKA1, Youji MOTOKI1, Yasuhiro TAKANAWA1 and Masamitsu KAWANAMI1 1Department of Periodontology and Endodontology, Division of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, N13 W7 Kita-ku, Sapporo 060-8586, Japan 2Dental Office Mahito, 2-2 Kawanacho, Showa-ku, Nagoya 466-0856, Japan 3Kinikyo Sapporo Dental Clinic, 7-25 Kikusui 4-1, Shiroishi-ku, Sapporo 003-0804, Japan Corresponding author, Kaori OTANI; E-mail: [email protected] This study evaluated apical periodontal healing after root-end sealing using 4-META/MMA-TBB resin (SB), and root-end filling using reinforced zinc oxide eugenol cement (EBA) or mineral trioxide aggregate (MTA) when root canal infection persisted. Apical periodontitis was induced in mandibular premolars of beagles by contaminating the root canals with dental plaque. After 1 month, in the SB group, SB was applied to the resected surface following apicoectomy. In the EBA and MTA groups, a root-end cavity was prepared and filled with EBA or MTA. In the control group, the root-end was not filled. Fourteen weeks after surgery, histological and radiographic analyses in a beagle model were performed. The bone defect area in the SB, EBA and MTA groups was significantly smaller than that in the control group. The result indicated that root-end sealing using SB and root-end filling using EBA or MTA are significantly better than control.
  • Kinetic Hydrogen/Deuterium Isotope Effects in Multiple Proton Transfer Reactions

    Kinetic Hydrogen/Deuterium Isotope Effects in Multiple Proton Transfer Reactions

    Z. Phys. Chem. 218 (2004) 17–49 by Oldenbourg Wissenschaftsverlag, München Kinetic Hydrogen/Deuterium Isotope Effects in Multiple Proton Transfer Reactions By Hans-Heinrich Limbach 1 , ∗, Oliver Klein 1 , Juan Miguel Lopez Del Amo 2, and Jose Elguero 2 1 Institut für Chemie der Freien Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany 2 Instituto de Qu´ımica Medica,´ CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain Dedicated to Prof. Dr. Herbert Zimmermann on the occasion of his 75th birthday (Received May 20, 2003; accepted July 8, 2003) Multiple Proton Transfer / Kinetic Isotope Effects In this paper, a description of multiple kinetic isotope effects (MKIE) of degenerate double, triple and quadruple proton transfer reactions in terms of formal kinetics is developped. Both single and multiple barrier processes are considered, corresponding to so-called “concerted” and “stepwise” reaction pathways. Each step is characterized by a rate constant and the transfer of a given H isotopes or ensemble of H isotopes. The MKIE are expanded in terms of kinetic H/D isotope effects P contributed by single sites in which a proton is transferred in the rate limiting steps. By combination with a modified Bell tunneling model the formalism developed can be used in order to take into account tunneling effects of both concerted and stepwise multiple proton transfers at low temperatures. 1. Introduction Proton transfer constitutes a very complex process, consisting not only of the transfer of a proton but also of diffusion, transport of electrical charges, reori- entation and reorganisation of the solvent molecules, hydrogen bond breaking and forming processes.
  • Actual Symmetry of Symmetric Molecular Adducts in the Gas Phase, Solution and in the Solid State

    Actual Symmetry of Symmetric Molecular Adducts in the Gas Phase, Solution and in the Solid State

    S S symmetry Review Actual Symmetry of Symmetric Molecular Adducts in the Gas Phase, Solution and in the Solid State Ilya G. Shenderovich Institute of Organic Chemistry, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, Germany; [email protected] Abstract: This review discusses molecular adducts, whose composition allows a symmetric structure. Such adducts are popular model systems, as they are useful for analyzing the effect of structure on the property selected for study since they allow one to reduce the number of parameters. The main objectives of this discussion are to evaluate the influence of the surroundings on the symmetry of these adducts, steric hindrances within the adducts, competition between different noncovalent interactions responsible for stabilizing the adducts, and experimental methods that can be used to study the symmetry at different time scales. This review considers the following central binding units: hydrogen (proton), halogen (anion), metal (cation), water (hydrogen peroxide). Keywords: hydrogen bonding; noncovalent interactions; isotope effect; cooperativity; water; organ- ometallic complexes; NMR; DFT 1. Introduction If something is perfectly symmetric, it can be boring, but it cannot be wrong. If Citation: Shenderovich, I.G. Actual something is asymmetric, it has potential to be questioned. Note, for example, the symmetry Symmetry of Symmetric Molecular of time in physics [1,2]. Symmetry also plays an important role in chemistry. Whether Adducts in the Gas Phase, Solution it is stereochemistry [3], soft matter self-assembly [4,5], solids [6,7], or diffusion [8], the and in the Solid State. Symmetry 2021, dependence of the physical and chemical properties of a molecular system on its symmetry 13, 756.
  • A Literature Review of Root-End Filling Materials

    A Literature Review of Root-End Filling Materials

    IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) e-ISSN: 2279-0853, p-ISSN: 2279-0861. Volume 9, Issue 4 (Sep.- Oct. 2013), PP 20-25 www.iosrjournals.org A Literature Review of Root-End Filling Materials Priyanka.S.R , Dr.Veronica (Saveetha Dental college, Saveetha University, India) (Department of Conservative dentistry and Endodontics, Saveetha Dental college, Saveetha University, India) Abstract: Surgical endodontic therapy is done when non-surgical endodontic treatment is unsuccessful. Root- end resection is the most common form of periradicular surgery. The procedure involves surgical access or osteotomy to expose the involved area, root-end preparation, root-end resection, periradicular curettage and placement of a suitable root-end filling material. This article reviews the effectiveness of various available, time-tested and newer root-end filling materials including their biocompatibility, sealing ability, anti-bacterial effects and capacity to stimulate regeneration of normal periodontium. Keywords: endodontic surgery, filling, retrograde, review, root-end I. Introduction: The goal of endodontic therapy is to hermetically seal all pathways of communication between the pulpal and periradicular tissues. A mandatory requirement of root canal therapy is that the obturation and restoration of the tooth must seal the root canals both apically and coronally to prevent leakage and percolation of oral fluids and to prevent recontamination of disinfected canals. Apicoectomy (apicectomy / root-end resection) with retrograde obturation is a widely applied procedure in endodontics, when all efforts for the successful completion of orthograde endodontic therapy have failed [1]. Failure of non-surgical endodontic therapy or non-surgical endodontic retreatment indicates the need for endodontic surgery to save the tooth.
  • Pathways and Mechanisms from Computational Chemistry Calculations

    Pathways and Mechanisms from Computational Chemistry Calculations

    Electronic Supplementary Material (ESI) for Environmental Science: Processes & Impacts. This journal is © The Royal Society of Chemistry 2020 SUPPLEMENTARY INFORMATION Reduction of 1,2,3-Trichloropropane (TCP): Pathways and Mechanisms from Computational Chemistry Calculations Tifany L. Torralba-Sanchez1, Eric J. Bylaska2, Alexandra J. Salter-Blanc3, Douglas E. Meisenheimer1, Molly A. Lyon1, and Paul G. Tratnyek1* 1 OHSU-PSU School of Public Health, Oregon Health & Science University 3181 SW Sam Jackson Park Road, Portland, OR 97239 2 William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA. 99352 3 Jacobs, 2020 SW 4th Avenue, Suite 300, Portland, OR 97201 *Corresponding author: Email: [email protected], Phone: 503-346-3431 Contents Computational Method Details ............................................................................................. S2 Reactions Modeled, from Figure 2 (Table S1) ...................................................................... S4 Free energies of reaction calculated with hydron (H+) model (Table S2) ............................. S6 + Free energies of reaction calculated with hydronium (H3O ) model (Table S3) ................... S8 Comparison of hydron vs. hydronium modeling (Figure S1) ................................................ S10 Reaction coordinate diagrams with DFT methods (Figures S2-S5) ...................................... S11 Batch Experimental Methods ...............................................................................................
  • Efficacy of Different Methods Used for Dry Socket Management: a Systematic Review

    Efficacy of Different Methods Used for Dry Socket Management: a Systematic Review

    Med Oral Patol Oral Cir Bucal-AHEAD OF PRINT - ARTICLE IN PRESS Dry socket management Journal section: Oral Surgery doi:10.4317/medoral.20589 Publication Types: Review http://dx.doi.org/doi:10.4317/medoral.20589 Efficacy of different methods used for dry socket management: A systematic review Maria Taberner-Vallverdú 1, Mariam Nazir 1, M. Ángeles Sánchez-Garcés 2, Cosme Gay-Escoda 3 1 Dentistry student, School of Dentistry, University of Barcelona, Barcelona, Spain 2 MD, DDS, MS, PhD, EBOS, Associated professor of Oral Surgery. Master’s Degree Program in Oral Surgery and Implantology, School of Dentistry, University of Barcelona. Researcher of the IDIBELL institute, Barcelona, Spain 3 MD, DDS, MS, PhD, EBOS, Chairman and Professor of Oral and Maxillofacial Surgery, School of Dentistry, Barcelona. Direc- tor of the Master’s Degree Program in Oral Surgery and Implantology (EFHRE International University/FUCSO). Coordinator/ Researcher of the IDIBELL Institute. Head of the Oral Surgery, Implantology and Maxillofacial Surgery Department of the Teknon Medical Center, Barcelona, Spain Correspondence: Centro Médico Teknon, C/Vilana 12, 08022 Barcelona, Spain, [email protected] Please cite this article in press as: Taberner-Vallverdú M, Nazir M, Sánchez-Garcés MÁ, Gay-Escoda C. Efficacy of different methods used for dry socket management: A sys- tematic review. Med Oral Patol Oral Cir Bucal. (2015), doi:10.4317/medoral.20589 Received: 06/01/2015 Accepted: 16/04/2015 Abstract Background: Dry socket is one of the most common complications occurring after the extraction of a permanent tooth, but in spite of its high incidence there is not an established treatment for this condition.
  • 113 Effectivity Antibacterial Zinc Oxide Eugenol with Zinc Oxide Propolis for Endodontic Treatment in Primary Teeth

    113 Effectivity Antibacterial Zinc Oxide Eugenol with Zinc Oxide Propolis for Endodontic Treatment in Primary Teeth

    Rahman/Christiono 113 EFFECTIVITY ANTIBACTERIAL ZINC OXIDE EUGENOL WITH ZINC OXIDE PROPOLIS FOR ENDODONTIC TREATMENT IN PRIMARY TEETH Erwid Fatchur Rahman* ,Sandy Christiono** Keywords: ABSTRACT Zinc oxide, Eugenol, Propolis, Background: Enterococcus faecalis is generally found on the failure of root canal Enterococcus treatments. Zinc oxide propolis is believed to have an antibacterial effect on that faecalis. bacteria. This research aimed to compare bacteriostatic effect of zinc oxide eugenol (ZOE) and zinc oxide propolis (ZOP) as the sealer materials of root canal. Method: This was an experimental research with post-test only control group design with two different groups (ZOE and ZOP). Culture of Enterococcus faecalis bacteria was smeared on Blood Agar Plate media with six times replication per group and kept inside incubator for 24 hours. The result was obtained from the inhibition zone formed around the pasta. Result: The average result of ZOE and ZOP was 27.7 mm and 13.45 mm respectively. Normality test using Shapiro-Wilks showed that data was normal (p>0.05). Then, the data was analysed using Independent Samples T-test. The result showed that there was different inhibition zone between ZOE group and ZOP group (p<0.05). Conclusion: Based on the result, it can be concluded that ZOP has lower antibacterial effectiveness of the Enterococcus faecalis than ZOE. INTRODUCTION disinfection and obturation of root canal. The successful of endodontic treatment requires Elimination microorganism from infected proper preparation and obturation the root ca- root canals are major focus in the root canal nal, especially on the apical third. A number of treatment mainly primary teeth, presence of 60 % of treatment failures caused by poor of bacteria play an important role in the patho- obturation in the root canal.3 genesis of pulp and success of endodontic Since 1930, zinc oxide eugenol has been treatment.1 the bacteria can survive in the root the material of choice.