Impact of restorative material on fracture behaviors of class II restoration in endodontically treated deciduous molars

Wada K., Wada J., ÜÇTAŞLI M. B., ÜÇTAŞLI S., Yavuz Y., Iwamoto T., ...More

Dental Materials Journal, vol.43, no.5, pp.738-745, 2024 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 5
  • Publication Date: 2024
  • Doi Number: 10.4012/dmj.2024-067
  • Journal Name: Dental Materials Journal
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Biotechnology Research Abstracts, Communication Abstracts, Compendex, EMBASE, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.738-745
  • Keywords: Deciduous molar teeth, Endodontically treated, Fracture behavior, Fracture load, Short fiber-reinforced composite
  • Ankara University Affiliated: Yes

Abstract

The purpose of this study was to investigate the fracture behavior of endodontically treated (ET) deciduous molar when directly restored with different restorative materials in Class II (MO) cavities in comparison with permanent teeth. MO cavities were prepared with 2.4–2.5 mm and 1.9–2.0 mm in buccolingual width, and mesiodistal width of each cavity walls, respectively, followed by direct restoration with different materials: resin-modified glass ionomer cement (RMGIC), composite resin (CR), and composite resin containing 25% short glass-fiber (SFRC). All specimens were subjected to mechanical loading tests at a speed of 1 mm/min and evaluated fracture resistance and fracture modes. A one-way ANOVA followed by a Tukey multiple comparisons analysis was used. Deciduous-SFRC (3,310.5±396.2 N) were significantly higher fracture resistance than permanent-RMGIC (1,633.8±346.8 N) (p<0.001), and permanent-CR (1,400.0±381.3 N) (p<0.001). For the direct restoration of MO cavity after endodontic treatment, SFRC demonstrated its promising performance in load-bearing capacity and failure mode, especially in ET deciduous molars.