The adaptation achieved by four root canal filling techniques as assessed by three methods.
Four root canal filling techniques--lateral condensation, McSpadden compaction, ultrasonic activation (Enac), and thermoplastic injection (Ultrafil)--were assessed for adaptation of the filling material to the canal wall. The adaptation and leakage were examined quantitatively using an electrochemical method and a linear dye penetration method, and qualitatively by radiographic evaluation. Using the electrochemical method, differences among obturation techniques were relatively small, although a greater proportion of the teeth that had been filled by lateral condensation exhibited no leakage. Radiographically, the techniques appeared to exhibit similar adaptation in the apical 6 mm. The techniques of lateral condensation and ultrasonic activation showed superior control of length of the root canal filling.
Amditis
C
C
Department of Preventive Dentistry, Westmead Hospital Dental Clinical School.
Blackler
S M
SM
Bryant
R W
RW
Hewitt
G H
GH
D001729:Bismuth / Q000737:chemistry; D001840:Dental Bonding; D003763:Dental Leakage / Q000175:diagnosis / Q000000981:diagnostic imaging; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging; D004563:Electrochemistry; D006171:Gutta-Percha / Q000737:chemistry; D006358:Hot Temperature; D006801:Humans; D008751:Methylene Blue; D011859:Radiography; D012117:Resins, Synthetic / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods*; D012390:Root Canal Therapy; D013499:Surface Properties; D014464:Ultrasonic Therapy / Q000295:instrumentation; D015034:Zinc Oxide / Q000737:chemistry
D012117:Resins, Synthetic; D012387:Root Canal Filling Materials; C035615:Proco-Sol; D006171:Gutta-Percha; D015034:Zinc Oxide; D008751:Methylene Blue; D001729:Bismuth