title: Chronologic comparison of root dentin moisture in extracted human teeth stored in formalin, sodium azide, and distilled water.
abstract: This study quantified in vitro the root dentin moisture when 10% formalin (group A), 3% sodium azide (group B), and distilled water (group C) were used as teeth storage media. The root dentin moisture of 66 extracted human mandibular single-rooted teeth was measured at baseline (day 0) and at 1, 3, 7, and 14 days using a digital grain moisture meter. The baseline dentin moisture value was used as covariate in the generalized estimating equation (GEE) analysis. The mean dentin moisture values (%) +/- SD on days 0, 1, 3, 7, and 14 were, respectively: 10.6 +/- 0.64, 14.3 +/- 0.71, 14.6 +/- 0.84, 14.4 +/- 0.64, and 14.7 +/- 0.75 in group A; 11.4 +/- 0.94, 14.6 +/- 0.95, 14.6 +/- 0.76, 14.6 +/- 0.93, and 14.8 +/- 0.81 in group B; and 10.2 +/- 0.95, 12.8 +/- 0.90, 13.3 +/- 0.95, 13.0 +/- 0.91, and 13.2 +/- 0.89 in group C. The dentin moisture increased in all 3 groups; however, there was no overall significant difference in moisture between the formalin and sodium azide groups.
authors.affiliation: Department of Endodontics, Baylor College of Dentistry, Texas A&M Health Science Center, Dallas, Texas 75246, USA. tkomabayashi@bcd.tamhsc.edu
authors.forename: Takashi
authors.initials: T
authors.lastname: Komabayashi
authors.forename: Chul
authors.initials: C
authors.lastname: Ahn
authors.forename: Song
authors.initials: S
authors.lastname: Zhang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhu
authors.forename: Larz S W
authors.initials: LS
authors.lastname: Spångberg
mesh_terms: D001834:Body Water / Q000737:chemistry*; D001840:Dental Bonding; D003804:Dentin / Q000737:chemistry*; D004581:Electronics / Q000295:instrumentation; D005404:Fixatives / Q000737:chemistry*; D005557:Formaldehyde / Q000737:chemistry*; D006801:Humans; D006813:Humidity; D019810:Sodium Azide / Q000737:chemistry*; D013048:Specimen Handling; D013696:Temperature; D013997:Time Factors; D014092:Tooth Root / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D005404:Fixatives; D014867:Water; D005557:Formaldehyde; D019810:Sodium Azide