title: Formaldehyde release from ground root canal sealer in vitro.
abstract: The formaldehyde release from three different ground root canal sealer materials was examined. Ten specimens each of AH26, Amubarut, and N2 were stored under dry conditions for 6 months. An amount of approximately 100 to 200 mg ground material was obtained from each sample by using a round bur and stored for 10 min in distilled water. The formaldehyde concentration of the immersion water was determined by high-performance liquid chromatography. The mean formaldehyde release per mg material was 6.6 (+/-2.5) microg for AH26 and 8.3 (+/-1.0) microg for Amubarut. A lower formaldehyde release was detectable by our method from the N2 samples (0.3 +/- 0.1 microg/g; p < 0.0001). In conclusion formaldehyde release from ground root canal material is low, although a risk of an allergic reaction in susceptible patients cannot be excluded.
authors.affiliation: Poliklinik für Zahnerhaltungskunde, Ruprecht-Karls-University, Heidelberg, Germany.
authors.forename: M J
authors.initials: MJ
authors.lastname: Koch
authors.forename: E
authors.initials: E
authors.lastname: Wünstel
authors.forename: G
authors.initials: G
authors.lastname: Stein
mesh_terms: D001729:Bismuth / Q000032:analysis / Q000737:chemistry; D016009:Chi-Square Distribution; D002851:Chromatography, High Pressure Liquid; D004058:Diffusion; D004338:Drug Combinations; D004853:Epoxy Resins; D005054:Eugenol / Q000032:analysis / Q000737:chemistry; D005557:Formaldehyde / Q000032:analysis / Q000737:chemistry*; D006801:Humans; D008709:Methenamine / Q000032:analysis / Q000737:chemistry; D012118:Resorcinols / Q000032:analysis / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000032:analysis / Q000737:chemistry*; D012834:Silver / Q000032:analysis / Q000737:chemistry; D013696:Temperature; D014025:Titanium / Q000032:analysis / Q000737:chemistry; D014867:Water; D015034:Zinc Oxide / Q000032:analysis / Q000737:chemistry
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D012118:Resorcinols; C028067:Riebler's paste; D012387:Root Canal Filling Materials; D014867:Water; D005557:Formaldehyde; D012834:Silver; D005054:Eugenol; C028044:epoxy resin AH-26; C003799:N2 Dental Cement; D014025:Titanium; D008709:Methenamine; D015034:Zinc Oxide; D001729:Bismuth