title: A preliminary evaluation of the effect of ultrasonic root end cavity preparation and reverse filling on the ability of plastic core Thermafil obturations to maintain an air-tight seal.
authors.forename: D
authors.initials: D
authors.lastname: Daugherty
authors.forename: J T
authors.initials: JT
authors.lastname: Biggs
mesh_terms: D001047:Apicoectomy / Q000009:adverse effects*; D016009:Chi-Square Distribution; D003763:Dental Leakage / Q000209:etiology*; D019232:Dental Restoration Failure; D017220:Dentin-Bonding Agents; D006801:Humans; D016013:Likelihood Functions; D008963:Molar; D011897:Random Allocation; D019233:Retreatment; D012184:Retrograde Obturation / Q000009:adverse effects*; D012387:Root Canal Filling Materials; D018915:Root Canal Preparation / Q000009:adverse effects / Q000295:instrumentation*; D013223:Statistics as Topic; D019553:Tooth, Nonvital; D014464:Ultrasonic Therapy / Q000009:adverse effects*
chemical_list: D017220:Dentin-Bonding Agents; D012387:Root Canal Filling Materials; C084074:Super EBA