title: A comparison of apical sealing and extrusion between Thermafil and lateral condensation techniques.
abstract: Forty curved canals from 20 mesial roots of extracted human mandibular molars were instrumented (Profile .04) using a crown-down technique and divided into two groups. The experimental group was obturated using the Thermafil technique and the control group was obturated using the lateral condensation technique. Topseal sealer was used in both groups. Apical extrusion was recorded. Two molars were used as control teeth. All specimens were stored in 100% humidity for 1 wk, coated with nail polish, except for the apical 2 mm, and were suspended in black India ink for 48 h. Molars were decalcified, rendered transparent, and linear dye penetration was measured. Linear dye leakage and apical extrusion between the techniques were not statistically different (Mann-Whitney U test).
authors.affiliation: Division of Endodontia, School of Dentistry, Universidad de Chile, Santiago.
authors.forename: A M
authors.initials: AM
authors.lastname: Abarca
authors.forename: A
authors.initials: A
authors.lastname: Bustos
authors.forename: M
authors.initials: M
authors.lastname: Navia
mesh_terms: D002244:Carbon; D016009:Chi-Square Distribution; D004396:Coloring Agents; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification / Q000473:pathology; D003786:Dental Pulp Cavity / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D004853:Epoxy Resins / Q000737:chemistry / Q000627:therapeutic use; D006171:Gutta-Percha / Q000737:chemistry* / Q000627:therapeutic use; D006801:Humans; D006813:Humidity; D008963:Molar; D011859:Radiography; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D018709:Statistics, Nonparametric; D013499:Surface Properties; D019227:Tooth Apex / Q000033:anatomy & histology / Q000000981:diagnostic imaging
chemical_list: D004396:Coloring Agents; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C115110:Topseal; C028433:chinese ink; D002244:Carbon; D006171:Gutta-Percha