Download PDF
CC BY-NC-ND 4.0 · Eur J Dent 2013; 07(02): 201-206
DOI: 10.4103/1305-7456.110173
Original Article
Dental Investigation Society

Chemical composition and thermal behavior of five brands of thermoplasticized gutta-percha

Claudio Maniglia-Ferreira
1   Department of Endodontics, University of Fortaleza (UNIFOR), Fortaleza, Brazil
,
Eduardo Diogo Gurgel-Filho
1   Department of Endodontics, University of Fortaleza (UNIFOR), Fortaleza, Brazil
,
João Batista de Araújo Silva-Jr
2   Department of Organic and Inorganic Chemistry, State University of Ceará (UECE), Fortaleza, CE, Brazil
,
Regina Célia Monteiro de Paula
3   Department of Organic and Inorganic Chemistry, Federal University of Ceará (UFC), Fortaleza, CE, Brazil
,
Judith Pessoa de Andrade Feitosa
3   Department of Organic and Inorganic Chemistry, Federal University of Ceará (UFC), Fortaleza, CE, Brazil
,
Francisco José de Sousa-Filho
4   Department of Endodontics, State University of Campinas (FOP-UNICAMP), Piracicaba, Brazil
› Author Affiliations
Further Information

Publication History

Publication Date:
25 September 2019 (online)

Also available at
  PDF Download Permissions and Reprints

ABSTRACT

Objective: The aim of this study was determine the chemical composition and thermal behavior of Thermafil (TH), Microseal Cone (MC), Microseal Microflow (MF), Obtura (OB) and Obtura Flow (OF). In addition, their thermal behavior in response to temperature variations was studied by differential scanning calorimetry (DSC) to determine the temperature at which gutta-percha switches from the beta to alpha form, and from the alpha to the amorphous phase. Materials and Methods: The organic and inorganic fractions were separated by dissolution in chloroform. Gutta-percha (GP) was precipitated with acetone. The inorganic fraction was analyzed via Elemental Microanalysis. Energy Dispersive X-ray Microanalysis and X-ray Diffraction were used to identify the chemical elements and compounds (BaSO4 and ZnO). Thermal analysis was conducted using DSC. Results: The organic and inorganic fractions ranged from 21.3% and 26.9% of weights, respectively. MC and MF showed the highest percentages of organic compounds (P = 0.0125). All specimens exhibited two crystalline transformations when heated from ambient temperature to 130°C. MC presented the highest percentage of GP. Conclusions: No correlation was observed between chemical composition and thermal behavior. Each of the products showed thermal behavior that is typical of beta-phase gutta-percha.

Chemical composition - gutta-percha - root canal filling materials - thermal behavior - thermoplastic obturation
 

  • REFERENCES

  • 1 Anbu R, Nandini S, Velmurugan N. Volumetric analysis of root fillings using spiral computed tomography: An in vitro study. Int Endod J 2012; 43: 64-8
    Google Scholar
  • 2 Goldberg F, Artaza LP, Silvio A. Efectiveness of different obturation techniques in the filling of simulated lateral canals. J Endod 2001; 27: 362-4
    CrossrefPubMedGoogle Scholar
  • 3 Gurgel-Filho ED, Feitosa JP, Gomes BP, Ferraz CC, Souza-Filho FJ, Teixeira FB. Assessment of different gutta-percha brands during the filling of simulated lateral canals. Int Endod J 2006; 39: 113-8
    CrossrefPubMedGoogle Scholar
  • 4 Tanomaru-Filho M, Pinto RV, Bosso R, Nascimento CA, Berbert FL, Guerreiro-Tanomaru JL. Evaluation of the thermoplasticity of gutta-percha and Resilon(®) using the Obtura II System at different temperature settings. Int Endod J 2011; 44: 764-8
    CrossrefPubMedGoogle Scholar
  • 5 De Deus GA, Gurgel-Filho ED, Maniglia-Ferreira C, Coutinho-Filho T. Penetração intradentinária de quatro cimentos endodônticos. Braz Oral Res 2002; 16: 332-6
    Google Scholar
  • 6 Friedman CE, Sandrick JL, Heuer MA, Rapp GW. Composition and physical properties of gutta-percha endodontics filling materials. J Endod 1977; 3: 304-8
    CrossrefPubMedGoogle Scholar
  • 7 Ozawa T, Taha N, Messer HH. A comparison of techniques for obturating oval-shaped root canals. Dent Mat J 2009; 28: 290-4
    CrossrefPubMedGoogle Scholar
  • 8 Brosco VH, Bernardineli N, Torres SA, Consolaro A, Bramante CM, Moraes IG. et al. Bacterial leakage in obturated root canals-part 2: A comparative histologic and microbiologic analyses. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010; 109: 788-94
    CrossrefPubMedGoogle Scholar
  • 9 Chandrasekhar V, Morishetty PK, Metla SL, Raju RV. Expansion of gutta-percha in contact with various concentrations of zinc oxide-eugenol sealer: A three-dimensional volumetric study. J Endod 2011; 37: 697-700
    CrossrefPubMedGoogle Scholar
  • 10 Schilder H. Filling root canals in three dimensions. Dent Clin North Am 1967; 11: 723-44
    Google Scholar
  • 11 Goodman A, Schilder H, Aldrich W. The thermomechanical properties of guta-percha: II: The history and molecular chemistry of guta-percha. Oral Surg Oral Med Oral Pathol 1974; 37: 954-61
    CrossrefPubMedGoogle Scholar
  • 12 Cohen BD, Combe EC, Lilley JD. Effect of thermal placement techniques on some physical properties of dental gutta-percha. Int Endod J 1992; 25: 292-6
    CrossrefPubMedGoogle Scholar
  • 13 Maniglia-Ferreira C, Valverde GB, Silva Jr JB, Paula RC, Feitosa JP, Souza-Filho FJ. Clinical relevance of trans 1,4-polyisoprene aging degradation on the longevity of root canal treatment. Braz Dent J 2007; 18: 97-101
    PubMedGoogle Scholar
  • 14 Schilder H, Goodman A, Aldrich W. 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 Surg Oral Med Oral Pathol 1985; 59: 285-96
    CrossrefPubMedGoogle Scholar
  • 15 Gurney BF, Best EJ, Gervasio E. Physical measurements on gutta-percha. Oral Surg Oral Med Oral Pathol 1971; 32: 260-70
    CrossrefPubMedGoogle Scholar
  • 16 Marciano J, Michailesco PM, Abadie JM. Stereochemical structure characterization of dental gutta-percha. J Endod 1993; 19: 31-4
    CrossrefPubMedGoogle Scholar
  • 17 Marciano J, Michailesco PM, Charpentier E, Carrera L, Abadie JM. Thermomechanical analysis of dental gutta-percha. J Endod 1992; 18: 263-70
    CrossrefPubMedGoogle Scholar
  • 18 Schilder H, Goodman A, Aldrich W. The thermomechanical properties of gutta-percha. III: Determination of phase transition temperatures for gutta-percha. Oral Surg Oral Med Oral Pathol 1974; 38: 109-14
    CrossrefPubMedGoogle Scholar
  • 19 Maniglia-Ferreira C, Gurgel-Filho ED, Silva Jr JB, Paula RC, Feitosa JP, Gomes BP. et al. Brazilian gutta-percha points. Part II: thermal properties. Braz Oral Res 2007; 21: 29-34
    PubMedGoogle Scholar
  • 20 Marciano J, Michailesco PM. Dental gutta-percha: Chemical composition, X-ray identification, enthalpic studies and clinical implications. J Endod 1989; 15: 149-53
    CrossrefPubMedGoogle Scholar
  • 21 Combe EC, Cohen BD, Cummings K. Alpha-and beta-forms of gutta-percha in products for root canal filling. Int Endod J 2001; 34: 447-51
    CrossrefPubMedGoogle Scholar
  • 22 Gurgel-Filho ED, Feitosa JP, Teixeira FB, Paula RC, Silva Jr JB, Souza-Filho FJ. Chemical and X-ray analyses of five brands of dental gutta-percha cone. Int Endod J 2003; 36: 302-7
    CrossrefPubMedGoogle Scholar
  • 23 Möller B, Ørstavik D. Chemical and Energy Dispersive X-ray analyses of gutta-percha points. J Endod 1984; 10: 413-6
    CrossrefPubMedGoogle Scholar
  • 24 Lyman CE, Goldstein JI, Romig Jr AD, Echlin P, Joy DC, Newbury DE. et al. Scanning electron microscopy, X-ray microanalysis, and analytical electron microscopy. New York, NY: Plenum Press; 1990: p. 33-41
    CrossrefGoogle Scholar
  • 25 Maniglia-Ferreira C, Silva Jr JB, Paula RC, Feitosa JP, Cortez DG, Zaia AA. et al. Brazilian gutta-percha points. Part I: Chemical composition and X-ray diffraction analysis. Braz Oral Res 2005; 19: 193-7
    CrossrefPubMedGoogle Scholar
  • 26 Budavari S, O’Neil MJ, Smith A, Heckelman PE, Kinneary J. Merck index. 12 nd ed. New Jersey: Merck and Co. Inc.; 1996
    Google Scholar
  • 27 Maniglia-Ferreira C, Valverde GB, Silva Jr JB, Paula RC, Feitosa JP, Souza-Filho FJ. Degradation of trans-polyisoprene after root filling with thermoplasticized techniques. Int Endod J 2008; 41: 296-302
    CrossrefPubMedGoogle Scholar
  • 28 Stevens MP. Polymer chemistry, an introduction. New York: Oxford University Press; 1999
    Google Scholar
  • 29 Ivan G, Meghea A, Giurginka M, Iftimie N. Thermo-oxidative degradation of some elastomers with a high content of 3,4 isoprene units. Pol Degrad Stab 2003; 80: 397-402
    CrossrefGoogle Scholar
  • 30 Silva Jr JBA, Paula RC, Feitosa JP, Gurgel-Filho ED, Maniglia-Ferreira C, Souza-Filho FJ. In vivo aging of gutta-percha endodontic cone. J Appl Pol Sc 2006; 100: 4082-8
    Google Scholar
  • 31 Maniglia-Ferreira C, Almeida-Gomes F, Sousa BC, Lins CC, Santos RA. A case of unusual anatomy in second mandibular molar with four canals. Eur J Dent 2008; 2: 217-9
    Article in Thieme ConnectPubMedGoogle Scholar