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RGO - Revista Gaúcha de Odontologia

versão impressa ISSN 1981-8637versão On-line ISSN 1981-8637

Resumo

ARASHIRO, Fábio Nakao et al. The relationship between the storage methods and the formation of dentinal defects (cracks). RGO, Rev. Gaúch. Odontol. [online]. 2019, vol.67, e20190028.  Epub 13-Jun-2019. ISSN 1981-8637.  http://dx.doi.org/10.1590/1981-86372019000283566.

Objective:

This research study aims at conducting an in vitro evaluation of crack formation in freshly extracted teeth after undergoing different storage and decontamination methods.

Methods:

60 erupted upper third molars conventionally extracted using forceps # 210h (quinelato surgical instruments, rio claro - sp) and randomly distributed in three groups (n = 30): group 1 - storage in dry environment for 30 days, group 2 - sterilization in autoclave and storage for 30 days in distilled water, and group 3 - 10% formaldehyde decontamination for 14 days and storage in distilled water for additional 30 days. after the storage period, teeth had their roots transversely sectioned at 2, 4 and 6 mm below the root apex using a low rotation diamond disk under constant cooling. the evaluation of fragments was performed using a 30-time magnification microscope.

Results:

Cracks were seen only in group 1 and the chi-square statistical test with 5% significance level showed a statistically significant difference comparing the dry storage group to the others.

Conclusion:

The storage of extracted teeth in a dry environment influences the formation of dentinal defects.

Palavras-chave : Disinfection; Endodontics; Root canal treatment.

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