title: Effect of blood contamination on retention characteristics of MTA when mixed with different liquids.
abstract: Simulated furcation perforations were repaired with and without blood contamination utilizing tooth-colored mineral trioxide aggregrate (MTA) mixed with either MTA liquid (sterile water), lidocaine, or saline. Samples underwent Instron testing at either 24 or 72 hours and at 7 days. Data were analyzed using a 3-way ANOVA and post-hoc testing using Turkey's true test for significance. All of the 72-hour samples displayed significantly greater resistance to displacement than the 24-hour samples. All of the 7-day samples displayed significantly greater resistance to displacement than the 24-hour and 72-hour samples. Non-contaminated samples displayed significantly greater resistance to displacement than their blood-contaminated counterparts at 7 days. Non-contaminated samples mixed with sterile water, lidocaine, or saline performed similarly at all time periods. Allowing tooth-colored MTA to set undisturbed for 72 hours or longer prior to placement of a coronal restoration may decrease the chance of MTA displacement in furcation perforation repairs.
authors.affiliation: Department of Endodontics, Lakenheath Air Base, UK.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Vanderweele
authors.forename: Scott A
authors.initials: SA
authors.lastname: Schwartz
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Beeson
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry / Q000627:therapeutic use*; D000704:Analysis of Variance; D000779:Anesthetics, Local; D001769:Blood; D017610:Calcium Compounds / Q000737:chemistry / Q000627:therapeutic use*; D001840:Dental Bonding; D003799:Dental Stress Analysis; D004338:Drug Combinations; D004340:Drug Contamination; D006801:Humans; D008012:Lidocaine; D008422:Materials Testing; D008963:Molar; D010087:Oxides / Q000737:chemistry / Q000627:therapeutic use*; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000627:therapeutic use*; D017640:Silicates / Q000737:chemistry / Q000627:therapeutic use*; D012965:Sodium Chloride; D018709:Statistics, Nonparametric; D013997:Time Factors; D014092:Tooth Root / Q000293:injuries*; D014867:Water; D014950:Wounds, Penetrating / Q000628:therapy*
chemical_list: D017607:Aluminum Compounds; D000779:Anesthetics, Local; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D014867:Water; D012965:Sodium Chloride; D008012:Lidocaine