Impact of different intraorifice barriers on fracture resistance of non-vital bleached teeth.

Abstract

Background and Aim:

This study aimed to evaluate the effects of bleaching agents on the fracture resistance of endodontically treated teeth using different intraorifice barrier (IOB) materials.

Materials and Methods:

The endodontic treatment was performed for 160 mandibular premolars, and then, the teeth were divided into four groups according to the IOB: Ionoseal, Biodentine, ProRoot MTA, and TheraBase. Then, these teeth were subdivided into four subgroups (n = 10) based on the bleaching agents as distilled water (control), hydrogen peroxide 35% (HP), sodium perborate (SP), and carbamide peroxide 37% (CP). The access cavities were restored with composite resin after applying the bleaching agents for 7 days. The fracture resistance test was performed using a universal testing machine. Data were statistically analyzed, and the significance level was set at 5%. A scanning electron microscope was used to evaluate the effect of bleaching agents on the surfaces of IOBs.

Results:

The highest fracture resistance values were observed in Biodentine groups with significant differences compared to Ionoseal and ProRoot MTA (P <.05). The distilled water groups showed significantly the highest fracture resistance compared to SP and HP groups (P <.05). There was no significant difference between SP, HP, and CP groups (P >.05). It was demonstrated that the morphological surface of the intact IOBs (control) was different from the surface of IOBs treated with bleaching agents.

Conclusion:

The intracoronal bleaching procedures affected negatively the fracture resistance of the endodontically treated teeth.

• Authors: M Abduljalil, B Sakalli, F Basmaci
• Journal: Nigerian journal of clinical practice (Niger J Clin Pract) Vol. 26 Issue 1 Pg. 95-101 (Jan 2023) ISSN: 1119-3077 [Print] India
• PMID: 36751830 (Publication Type: Journal Article)

Chemical References

• tricalcium silicate
• Ionoseal
• Hydrogen Peroxide
• Carbamide Peroxide
• Composite Resins
• Bleaching Agents
• sodium perborate
• Water

Topics

• Humans
• Tooth Bleaching (methods)
• Tooth, Nonvital
• Hydrogen Peroxide
• Carbamide Peroxide
• Composite Resins
• Bleaching Agents
• Water