Vinício Hidemitsu Goto Hirai

Publications (3) View all

• Article: Comparative analysis of leakage in root canal fillings performed with gutta-percha and Resilon cones with AH Plus and Epiphany sealers.

  Vinício Hidemitsu Goto Hirai, Ulisses Xavier da Silva Neto, Vânia Portela Ditzel Westphalen, Camila Paiva Perin, Everdan Carneiro, Luiz Fernando Fariniuk
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  ABSTRACT: The aim of this study was to compare the leakage of root canal fillings of gutta-percha or Resilon cones in association with AH Plus or Epiphany sealer. Four groups of premolars (n = 64) were instrumented to size 45/.04 ProFile and filled with laterally compacted gutta-percha cones or Resilon cones in association with AH Plus or Epiphany sealer. The specimens were stored for 2 weeks at 37 degrees C and 100% humidity. After that, leakage was measured using the fluid filtration method and determined as microL/min.10 psi. Homogeneity of variance and multiple comparisons tests were performed and indicated that root fillings with the combination of gutta-percha cones and AH Plus sealer showed lower leakage values (P < .05) than the other groups. Considering the experimental conditions and the results obtained, it was concluded that fillings made with gutta-percha cones in combination with AH Plus sealer had the best performance.
  Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 02/2010; 109(2):e131-5. · 1.50 Impact Factor
• Article: Effect of calcium hydroxide dressing on the long-term sealing ability of two different endodontic sealers: an in vitro study.

  Daiana Elisabeth Böttcher, Vinicio Hidemitsu Goto Hirai, Ulisses Xavier Da Silva Neto, Fabiana Soares Grecca
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  ABSTRACT: The aim of this in vitro study was to evaluate the long-term sealing ability of Real Seal system and Endofill after calcium hydroxide (CH) dressing, by using a fluid filtration model. Four randomized groups of single-rooted teeth (N=110) were prepared using a crown-down technique to a size 50 file. Two groups (1 and 2) received CH dressing before filling. Roots were filled with gutta-percha and Endofill (groups 2 and 4) or Resilon and Real Seal (groups 1 and 3). Leakage was measured by using the fluid filtration method after 90 days and determined as microL/min.10 psi. Statistical analysis by Kruskal-Wallis and Mann-Whitney tests indicated that CH dressing groups showed higher leakage values than those where CH was not used (P=.001). It may be concluded that the use of CH as an intracanal dressing material affected the sealing ability of both Real Seal and Endofill sealers.
  Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 09/2010; 110(3):386-9. · 1.50 Impact Factor
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  Article: Combined endodontic therapy and surgery in the treatment of dens invaginatus Type 3: case report.

  Ulisses Xavier da Silva Neto, Vinício Hidemitsu Goto Hirai, Vula Papalexiou, Silvana Beltrami Gonçalves, Vânia Portela Ditzel Westphalen, Clovis Monteiro Bramante, Wilson Denis Martins
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  ABSTRACT: An accurate understanding of the morphology of the root canal system is a prerequisite for successful root canal treatment. Invaginated teeth have a complex root canal configuration that cannot be instrumented effectively and should be treated by both endodontic therapy and surgery. A case of dens invaginatus Type 3 in a maxillary lateral incisor with a periapical lesion and its successful treatment by these combined methods is reported.
  Journal (Canadian Dental Association) 01/2006; 71(11):855-8. · 1.00 Impact Factor