Effectiveness of ultrasonic activation associated to glycolic acid on smear layer removal, dentin structure and bond strength to root dentin

Matheus Albino Souza; Julia Pommer dos Santos; Luanda Tissiani; Uillian Rauch  Magalhães; Karolina Frick Bischoff; Rafaela Ricci; Laura Teixeira  Hoffmann; Paula Cristine Ghiggi; João Paulo De Carli; Juliane Bervian; Eduardo Gonçalves  Mota; José Antonio Poli de  Figueiredo; Huriel Scartazzini Palhano

doi:10.14393/BJ-v39n0a2023-65616

Authors

Matheus Albino Souza Universidade de Passo Fundo https://orcid.org/0000-0002-9412-3807
Julia Pommer dos Santos Universidade de Passo Fundo
Luanda Tissiani Universidade de Passo Fundo
Uillian Rauch Magalhães Universidade de Passo Fundo
Karolina Frick Bischoff Universidade de Passo Fundo https://orcid.org/0000-0001-7805-5253
Rafaela Ricci Universidade de Passo Fundo https://orcid.org/0000-0001-6630-8401
Laura Teixeira Hoffmann Universidade de Passo Fundo
Paula Cristine Ghiggi Faculdade Meridional
João Paulo De Carli Universidade de Passo Fundo https://orcid.org/0000-0002-4705-6226
Juliane Bervian Universidade de Passo Fundo https://orcid.org/0000-0001-5718-3539
Eduardo Gonçalves Mota Pontifícia Universidade Católica do Rio Grande do Sul https://orcid.org/0000-0002-3245-2509
José Antonio Poli de Figueiredo Universidade Federal do Rio Grande do Sul
Huriel Scartazzini Palhano Universidade de Passo Fundo

DOI:

https://doi.org/10.14393/BJ-v39n0a2023-65616

Keywords:

EDTA, Final irrigation, Glycolic acid, QMix, Ultrasonic activation.

Abstract

This study evaluated the effects of ultrasonic activation (US) associated to glycolic acid (GA) on smear layer, dentin structure and bond strength (BS) of filling/restorative material to root dentin. The roots were used for antimicrobial activity, dentin structure and BS evaluation, being distributed into seven groups, according to irrigation protocols: G1:DW+US; G2:17% EDTA; G3:QMix; G4:17% GA; G5:17% EDTA+US; G6:QMix+US; G7:17% GA+US. Scanning electronic microscopy, transmission electronic microscopy and push-out were performed, with specific statistical analysis for each evaluation. The highest smear layer removal occured in Groups 6 and 7 (p<0.05), and the largest collagen dispersion in Group 7, being similar to Group 2 and 5 (p>0.05). The highest BS of filling and restorative material occurred in Groups 6 and 7, and Groups 5, 6 and 7, respectively, being similars between them (p>0.05). The use of GA+US promoted effective smear layer removal and dentin structure preservation, improving the BS of filling/restorative material to root dentin.

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