Table 4. Results of the articles included in the systematic review (G.E.C.B.: Guaiacol, Eugenol, Chlorobutanol and Balsam Peru mixture. CHX: Chlorhexidine. P.R.G.F.: Plasma rich in Growth Factors. (1): (A): = number of analgesic tablets needed, (B) = ibuprofen mg needed, (C) =patients % with pain relief. (2): no quantitative reference.