Real-time chemical analysis of root filling materials with heating: guidelines for safe temperature levels.
Raman spectroscopy
calcium silicate
endodontic heat carriers
epoxy resin sealer
gutta-percha
warm obturation
Journal
International endodontic journal
ISSN: 1365-2591
Titre abrégé: Int Endod J
Pays: England
ID NLM: 8004996
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
11
07
2019
accepted:
15
01
2020
pubmed:
20
1
2020
medline:
15
4
2020
entrez:
20
1
2020
Statut:
ppublish
Résumé
To investigate the chemical changes affecting different types of gutta-percha and endodontic sealers during heating, and correlate changes with the heating capacity of different heat carriers. The heating capacity of three endodontic heat carriers was evaluated using thermocouples to produce heat profiles. The devices were activated at different temperature set-ups, in continuous or cut-out modes. Chemical changes of six brands of gutta-percha and four types of sealers were assessed in real time during heating using micro-Raman spectroscopy equipped with a heating stage. Raman spectra of each tested material were averaged and compared at different temperature levels. The sealers were further assessed by Fourier transform infrared (FT-IR) spectroscopy. None of the tested heat carriers achieved the temperature levels that were set by the devices and recommended by the manufacturer. The use of continuous heating mode resulted in higher rises in temperature than the 4 s cut-out mode that reached 110 °C. The various brands of gutta-percha exhibited different chemical changes in response to heat. Some changes even occurred below temperature levels generated by the heating devices. All sealers revealed changes in their chemical composition upon heating. Changes in epoxy resin- and zinc oxide-eugenol-based sealers were detectable at 100 °C, with structural alterations beyond that temperature and irreversible changes after cooling. Water loss was irreversible in BioRoot, but its chemical structure was stable as well as for the TotalFill. The heating capacity of endodontic heat carriers needs to be standardized, so that the temperatures delivered by the tips are the same as that set on the dial. Practitioners should be aware of the actual temperatures generated by these devices, and the suitability of sealers to be used at the temperature levels achieved.
Substances chimiques
Calcium Compounds
0
Epoxy Resins
0
Root Canal Filling Materials
0
Silicates
0
Gutta-Percha
9000-32-2
Types de publication
Journal Article
Langues
eng
Pagination
698-708Informations de copyright
© 2020 International Endodontic Journal. Published by John Wiley & Sons Ltd.
Références
Arjunan V, Subramanian S, Mohan S (2001) Fourier transform infrared and Raman spectral analysis of trans-1, 4-polyisoprene. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 57, 2547-54.
Atmeh AR, AlShwaimi E (2017) The effect of heating time and temperature on epoxy resin and calcium silicate-based endodontic sealers. Journal of Endodontics 43, 2112-8.
Camilleri J (2015) Sealers and warm gutta-percha obturation techniques. Journal of Endodontics 41, 72-8.
Chowdhry BZ, Ryall JP, Dines TJ, Mendham AP (2015) Infrared and Raman spectroscopy of eugenol, isoeugenol, and methyl eugenol: conformational analysis and vibrational assignments from density functional theory calculations of the anharmonic fundamentals. Journal of Physical Chemistry A 119, 11280-92.
Copeland HI Jr, Brauer GM, Sweeney WT, Forziati AF (1955) Setting reaction of zinc oxide and eugenol. Journal of Research of the National Bureau of Standards 55, 133-8.
Dong ZW, Zhang CF, Deng H, You GJ, Qian SX (2006) Raman spectra of single micrometer-sized tubular ZnO. Materials Chemistry and Physics 99, 160-3.
Donnermeyer D, Schäfer E, Bürklein S (2018) Real-time intracanal temperature measurement during different obturation techniques. Journal of Endodontics 44, 1832-6.
Ellis B (1993) Introduction to the chemistry, synthesis, manufacture and characterization of epoxy resins. In: Ellis B, ed. Chemistry and technology of epoxy resins, 1st edn. Dordrecht, Netherlands: Springer, pp 1-36.
Enoki M, Doi Y, Iwata T (2003) Oxidative degradation of cis-and trans-1, 4-polyisoprenes and vulcanized natural rubber with enzyme-mediator systems. Biomacromolecules 4, 314-20.
Ferrante M, Trentini P, Croce F, Petrini M, Spoto G (2011) Thermal analysis of commercial gutta-percha. Journal of Thermal Analysis and Calorimetry 103, 563-7.
Fisher D (1953) Crystal structures of gutta-percha. Proceeding of Physical Society B 66, 7-16.
Friedman CM, Sandrik JL, Heuer MA, Rapp GW (1975) Composition and mechanical properties of gutta-percha endodontic points. Journal of Dental Research 54, 921-5.
Glickman GN, Walton RE (2009) Obturation. In: Torabinejad M, Walton RE, eds. Endodontics; principles and practice, 4th edn. St. Louis, MO, USA: Saunders Elsevier, pp 298-321.
González MG, Cabanelas JC, Baselga J (2012) Applications of FT-IR on epoxy resins-identification, monitoring the curing process, phase separation and water uptake. In: Theophile T, ed. Infrared spectroscopy-materials science, engineering and technology. London, UK: Intech Open, pp 261-84.
Goodman A, Schilder H, Aldrich W (1974) The thermomechanical properties of gutta-percha: II. The history and molecular chemistry of gutta-percha. Oral Surgery, Oral Medicine, Oral Pathology 37, 954-61.
Goodman A, Schilder H, Aldrich W (1981) The thermomechanical properties of gutta-percha. Part IV. A thermal profile of the warm gutta-percha packing procedure. Oral Surgery, Oral Medicine, Oral Pathology 51, 544-51.
Gurgel-Filho ED, Feitosa JPA, Teixeira FB, de Paula RCM, Silva JBA, Souza-Filho FJ (2003) Chemical and X-ray analyses of five brands of dental gutta-percha cone. International Endodontic Journal 36, 302-307.
Johnson W, Kulid JC, Tay F (2016) Obturation of the cleaned and shaped root canal system. In: Hargreaves KM, Berman LH, eds. Cohen's Pathways of the Pulp Expert Consult, 11th edn. St. Louis, MO: Mosby, pp 280-323.
Khan AS, Khalid H, Sarfraz Z et al. (2017) Vibrational spectroscopy of selective dental restorative materials. Applied Spectroscopy Reviews 52, 507-40.
Lea CS, Apicella MJ, Mines P, Yancich PP, Parker MH (2005) Comparison of the obturation density of cold lateral compaction versus warm vertical compaction using the continuous wave of condensation technique. Journal of Endodontics 31, 37-9.
Maniglia-Ferreira C, Bönecker G, Silva JB Jr, de Paula RC, Feitosa JP, Souza-Filho FJ (2008) Degradation of trans-polyisoprene after root filling with thermoplasticized techniques. International Endodontic Journal 41, 296-302.
Maniglia-Ferreira C, Gurgel-Filho ED, de Araújo Silva-Jr JB, de Paula RCM, de Andrade Feitosa JP, de Sousa-Filho FJ (2013) Chemical composition and thermal behavior of five brands of thermoplasticized gutta-percha. European Journal of Dentistry 7, 201-6.
McGraw GW, Hemingway RW, Ingram LL, Canady CS, McGraw WB (1999) Thermal degradation of terpenes: camphene, Δ3-carene, limonene, and α-terpinene. Environmental Science & Technology 33, 4029-33.
Michielsen S (2001) Applications of Raman spectroscopy to organic fibers and films. In: Lewis IR, Edwards H, eds. Handbook of Raman spectroscopy: from the research laboratory to the process line, 1st edn. New York NY: Marcel Dekker Inc, pp 749-98.
Mohazzabi P, Searcy AW (1976) Kinetics and thermodynamics of decomposition of barium sulphate. Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases 72, 290-5.
Ørstavik DAG (2005) Materials used for root canal obturation: technical, biological and clinical testing. Endodontic topics 12, 25-38.
Pathak A, Saxena V, Gupta Tandon P, VD, (2006) Vibrational dynamics of trans-1, 4-polyisoprene (β-form). Polymer 47, 5154-60.
Pathak A, Agarwal R, Tandon P, Gupta VD (2007) Vibrational dynamics and heat capacity of trans-1, 4-polyisoprene (α-form). Journal of Macromolecular Science, Part B: Physics. 46, 245-60.
Roberts HW, Kirkpatrick TC, Bergeron BE (2017) Thermal analysis and stability of commercially available endodontic obturation materials. Clinical Oral Investigations 21, 2589-602.
Robinson JW, Frame ES, Frame GM (2014) Undergraduate instrumental analysis, 7th edn. Boca Raton, FL: CRC Press.
Rodrigues FHA, Santos EF, Feitosa JPA, Ricardo NMPS, Heatley F (2004) Ozonation of unstretched natural rubber film from Hevea brasiliensis studied by ozone consumption and 13C NMR. Polymer International 53, 733-9.
Schilder H, Goodman A, Aldrich W (1974) The thermomechanical properties of gutta-percha. 3. Determination of phase transition temperatures for gutta-percha. Oral Surgery Oral Medicine Oral Pathology 38, 109-14.
Schilder H, Goodman A, Aldrich W (1985) The thermomechanical properties of gutta-percha. Part V. Volume changes in bulk gutta-percha as a function of temperature and its relationship to molecular phase transformation. Oral Surgery Oral Medicine Oral Pathology 59, 285-96.
Silva JBA Jr, de Paula RC, Feitosa JP, Gurgel-Filho ED, Maniglia-Ferreira C, de Souza Filho FJ (2006) In vivo aging of gutta-percha dental cone. Journal of Applied Polymer Science 100, 4082-8.
Silver GK, Love RM, Purton DG (1999) Comparison of two vertical condensation obturation techniques: touch 'n Heat modified and System B. International Endodontic Journal 32, 287-95.
Sun TL, Chen XM (2015) Raman spectra analysis for Ba [(Mg1-x Ni x) 1/3Nb2/3] O3 microwave dielectric ceramics. AIP Advances 5, 17106.
Turek C, Stintzing FC (2013) Stability of essential oils: a review. Comprehensive Reviews in Food Science and Food Safty 12, 40-53.
Venturi M, Pasquantonio G, Falconi M, Breschi L (2002) Temperature change within gutta-percha induced by the System-B Heat Source. International Endodontic Journal 35, 740-6.
Viapiana R, Guerreiro-Tanomaru JM, Tanomaru-Filho M, Camilleri J (2014) Investigation of the effect of sealer use on the heat generated at the external root surface during root canal obturation using warm vertical compaction technique with System B heat source. Journal of Endodontics 40, 555-61.
Viapiana R, Baluci CA, Tanomaru-Filho M, Camilleri J (2015) Investigation of chemical changes in sealers during application of the warm vertical compaction technique. International Endodontic Journal 48, 16-27.
Wu MK, Van der Sluis LWM, Wesselink PR (2002) A preliminary study of the percentage of gutta-percha-filled area in the apical canal filled with vertically compacted warm gutta-percha. International Endodontic Journal 35, 527-35.