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- Title
Assessing push‐out bond strength in re‐irradiated teeth: Universal resin cement performance in self‐etch and self‐adhesive modes.
- Authors
de Souza, Gabriel Hernandez Machado; Dias‐Junior, Luiz Carlos de Lima; Machado, Renata Gondo; Ghidini, Gabriela Pasqualin; Minamisako, Mariana Comparotto; Takashima, Marcio Toshio Umeda; Cábia, Nayara Cardoso; Machado, Ricardo; da Silveira Teixeira, Cleonice; Garcia, Lucas da Fonseca Roberti
- Abstract
Objectives: To investigate the effect of cumulative doses of radiation on the pushout bond strength (BS) of a universal resin cement used in the self‐etch (SE) and self‐adhesive (SA) modes to the intraradicular dentin. Materials and Methods: Forty‐eight human teeth were distributed into three groups (n = 16) according to the radiation therapy dose (RT): NoRT (no‐radiotherapy), 70RT (70 Gy), and 70 + 70RT (70 Gy + 70 Gy). The teeth were redistributed into two subgroups (n = 8), according to the adhesive mode: SE (NoRT‐SE, 70RT‐SE, and 70 + 70RT‐SE) and SA (NoRT‐SA, 70RT‐SA, and 70 + 70RT‐SA). Data were statistically compared after BS test (ANOVA, Tukey's post hoc test, and Fisher's exact test). Results: In the SA mode, BS was significantly higher in nonirradiated teeth compared with 70RT and 70 + 70RT (p < 0.0001). There were no significant differences between SE and SA modes in nonirradiated teeth (p = 0.14). In the 70RT group, SE mode increased BS compared with SA mode (p < 0.0001). Most specimens had adhesive and mixed failures in SA and SE modes, respectively. Conclusions: The universal resin cement in the SE mode had greater BS to the irradiated dentin. When teeth were re‐irradiated, the universal resin cement had similar performance in terms of BS, regardless of the adhesive approach. Clinical Significance: There is no research establishing a correlation between radiotherapy and its impact on the BS of a universal resin cement used in SE and SA modes to intraradicular dentin.
- Subjects
DENTAL bonding; MATERIALS testing; TEETH; DATA analysis; DENTIN; FISHER exact test; DENTAL cements; DESCRIPTIVE statistics; ADHESIVES; ANALYSIS of variance; STATISTICS; RADIATION doses; COMPARATIVE studies
- Publication
Journal of Esthetic & Restorative Dentistry, 2024, Vol 36, Issue 6, p941
- ISSN
1496-4155
- Publication type
Article
- DOI
10.1111/jerd.13220