Effect of Repair Material Type and Thermocycling Aging on Repair Bond Strength to Various Artificial Teeth Tamir Materyali Tipi ve Yaşlandırmanın Çeşitli Suni Dişlere olan Bağlanma Dayanımı üzerine Etkisi


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ÖZER N. E., OĞUZ E. İ.

Cumhuriyet Dental Journal, vol.26, no.2, pp.150-156, 2023 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 2
  • Publication Date: 2023
  • Doi Number: 10.7126/cumudj.1228510
  • Journal Name: Cumhuriyet Dental Journal
  • Journal Indexes: Scopus, Directory of Open Access Journals
  • Page Numbers: pp.150-156
  • Keywords: Artificial teeth, autopolymerizing acrylic resin, composite resin, shear bond strength
  • Lokman Hekim University Affiliated: Yes

Abstract

Objectives: To compare repair bond strength of acrylic and composite resin to different type of artificial teeth with and without thermocycling aging (TMC). Materials and Methods: A total of 192 specimens were prepared using four different types of artificial teeth (n=48) (Group CA-Conventional polymethylmethacrylate, Group IS-Isosite, Group DCL-Double cross-linked acrylic, Group NC-Nanohybrid composite). All specimens were aged with TMC (5000 cycles, 5◦C/55◦C) and repaired with auto-polymerized acrylic or composite resin. Half of the repaired samples were subjected to the shear bond strength (SBS) test while the other half were subjected to TMC to simulate the aging of the repair material. Then, artificially aged specimens were also subjected to the SBS test. Data were statistically analyzed by three-way analysis of variance (ANOVA). Paired comparisons were made using one-way ANOVA, and multiple comparisons were made using the Tukey HSD test (α=0.05). Results: The bond strength of both non-aged and artificially aged composite resin and non-aged acrylic resin did not differ according to artificial teeth type (p>0.05). However, artificially aged acrylic resin showed higher bond strength for group CA (9.25±2.96) than for group NC (5.01±3.09) (p<0.05). The bond strength of composite resin was higher than acrylic resin regardless of artificial teeth type and TMC (p<0.05). TMC decreased the bond strength of both acrylic and composite repair materials to all types of artificial teeth (p<0.05) Conclusions: New-generation artificial teeth used in removable dentures are costly. Therefore, repairing fractured teeth with composite resins instead of replacing them can be both time-efficient and economical.