title: Sealing ability, water sorption, solubility and toothbrushing abrasion resistance of temporary filling materials.
abstract: OBJECTIVE
  To evaluate marginal seal, water sorption, solubility and loss of mass after brushing of several temporary filling materials.
  
  
  METHODS
  For marginal seal, Class I cavities, including endodontic access preparations, were made in human molar teeth and restored using one or other of several temporary filling materials (n = 10): zinc oxide/calcium sulphate-based cement (Cavit, 3M,ESPE, St. Paul, MN, USA), zinc oxide/eugenol cement (IRM, Dentsply Caulk, Milford, DE, USA), glass ionomer cement (Vidrion R, SSWhite, Rio de Janeiro, RJ, Brazil) or a dimethacrylate-based filling (Bioplic, Biodinâmica, Londrina, PR, Brazil). Dye penetration was assessed after thermocycling and immersion in 0.5% basic fuchsine solution. For water sorption, solubility and loss of mass analyses, disc-shaped specimens were made. Water sorption and solubility were evaluated by mass alteration after storage in distilled water for 7 days (n = 7). Loss of mass was calculated based on the difference of mass after abrasion with a toothbrush (n = 5), and surfaces were analysed by SEM. Data of water sorption, solubility and loss of mass were submitted to anova and Tukey's test, and marginal sealing data to Kruskal-Wallis test (P < 0.05).
  
  
  RESULTS
  Statistically significant differences were observed for marginal sealing (P < 0.0001), water sorption (P < 0.01), solubility (P < 0.01) and loss of mass (P < 0.05). Bioplic had the best marginal seal. Cavit had the greatest water sorption and solubility. Vidrion R and Bioplic had the lowest solubility. Loss of mass after brushing was higher for Cavit, followed by Bioplic, IRM and Vidrion R. Cavit and Vidrion R were worn aggressively by brushing.
  
  
  CONCLUSIONS
  The resin-based temporary filling Bioplic produced the best marginal seal, and was associated with the lowest water sorption, solubility and loss of mass.
authors: Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil.
authors: C M
authors: CM
authors: Pieper
authors: C H
authors: CH
authors: Zanchi
authors: S A
authors: SA
authors: Rodrigues-Junior
authors: R R
authors: RR
authors: Moraes
authors: L S
authors: LS
authors: Pontes
authors: M
authors: M
authors: Bueno
mesh_terms: D000042:Absorption; D000327:Adsorption; D002133:Calcium Sulfate / Q000737:chemistry; D004396:Coloring Agents; D001840:Dental Bonding; D003737:Dental Cavity Preparation; D003738:Dental Cements; D003763:Dental Leakage / Q000145:classification; D019554:Dental Restoration Wear; D003794:Dental Restoration, Temporary; D004338:Drug Combinations; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011145:Polyvinyls / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D018915:Root Canal Preparation; D012394:Rosaniline Dyes; D012995:Solubility; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014099:Toothbrushing / Q000295:instrumentation*; D014867:Water / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D003738:Dental Cements; D004338:Drug Combinations; D005899:Glass Ionomer Cements; D008689:Methacrylates; D008768:Methylmethacrylates; D011145:Polyvinyls; D019279:Resin Cements; D012387:Root Canal Filling Materials; D012394:Rosaniline Dyes; C100647:Vidrion-R; D015035:Zinc Oxide-Eugenol Cement; D014867:Water; C025485:basic fuchsin; C031667:IRM cement; C020872:Cavit; D015034:Zinc Oxide; D002133:Calcium Sulfate