title: Experimental model: dye penetration of extensive interim restorations used during endodontic treatment while under load in a multiple axis chewing simulator.
abstract: The purpose of this study was to design an experimental model that allowed extensive endodontic interim restorations to be tested for dye penetration while under simulated masticatory load. Extracted premolar teeth had standardized mesio-occluso-distal cavities prepared, and the root canals were instrumented. A cotton wool pellet was placed in the pulp chamber, and the cavities were restored with Cavit, IRM, Ketac-Fil Plus, Ketac-Silver, or composite resin (Z100). They were subjected to the equivalent of 3 months of clinical load while exposed to methylene blue dye. Results of this study could not support IRM as a suitable interim endodontic restorative material to use in extensive cavities. The dye penetration in the Ketac-Fil Plus and Ketac-Silver specimens was not predictable, and the results suggested Cavit and Z100 composite resin require further investigations as potentially useful materials for this purpose.
authors: School of Dentistry, University of Western Australia, Nedlands, Western Australia, Australia.
authors: Arna-Lee
authors: AL
authors: Jensen
authors: Paul V
authors: PV
authors: Abbott
mesh_terms: D001641:Bicuspid; D001732:Bite Force; D002133:Calcium Sulfate / Q000737:chemistry / Q000627:therapeutic use; D016722:Cermet Cements / Q000737:chemistry / Q000627:therapeutic use; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry / Q000627:therapeutic use; D003738:Dental Cements; D003763:Dental Leakage / Q000145:classification*; D003794:Dental Restoration, Temporary / Q000379:methods*; D004338:Drug Combinations; D004867:Equipment Design; D005899:Glass Ionomer Cements / Q000737:chemistry / Q000627:therapeutic use; D006801:Humans; D008298:Maleates / Q000737:chemistry / Q000627:therapeutic use; D008409:Mastication; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods*; D008751:Methylene Blue; D008768:Methylmethacrylates / Q000737:chemistry / Q000627:therapeutic use; D011145:Polyvinyls / Q000737:chemistry / Q000627:therapeutic use; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000627:therapeutic use*; D018915:Root Canal Preparation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*; D012822:Silicon Dioxide / Q000737:chemistry / Q000627:therapeutic use; D013314:Stress, Mechanical; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry / Q000627:therapeutic use; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry / Q000627:therapeutic use; D015040:Zirconium / Q000737:chemistry / Q000627:therapeutic use
chemical_list: D016722:Cermet Cements; D004396:Coloring Agents; D003188:Composite Resins; D003738:Dental Cements; D004338:Drug Combinations; D005899:Glass Ionomer Cements; D008298:Maleates; D008768:Methylmethacrylates; D011145:Polyvinyls; D012387:Root Canal Filling Materials; C083568:Z100 composite resin; D015035:Zinc Oxide-Eugenol Cement; C031667:IRM cement; C020872:Cavit; D012822:Silicon Dioxide; C040964:Ketac-Fil; D015040:Zirconium; D015034:Zinc Oxide; D008751:Methylene Blue; D002133:Calcium Sulfate