Efeito da "smear layer" na capacidade de selamento da obturação dos canais: revisão sistemática e meta-análise

Effect of smear layer on sealing ability of canal obturation: a systematic review and meta-analysis.

Journal of Endodontics 2007 Feb;33(2):96-105

Shahravan A, Haghdoost AA, Adl A, Rahimi H, Shadifar F.

Department of Endodontics, Kerman School of Dentistry, Kerman University of Medical Services, Iran.

The purpose of this systematic review was to determine whether smear layer removal reduces leakage of obturated human teeth in vitro. PubMed was searched for articles published between 1975 and 2005, and results were categorized based on the method of leakage test. Among 26 eligible papers with 65 comparisons, 53.8% of the comparisons reported no significant difference, 41.5% reported a difference in favor of removing the smear layer, and 4.7% reported a difference in favor of keeping it; differences were significant (p<0 .001="" color="#ff6666" p="0.021)." score="0.37," z="2.31,">it is concluded that smear layer removal improves the fluid-tight seal of the root canal system whereas other factors such as the obturation technique or the sealer, did not produce significant effects.

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