牙体解剖学精品课件（中山大学）15.根管充填1.pptVIP

Schilder technique Introduced by Schilder in 1967 Three-dimensional obturation of the root canal system with warm gutta-percha Obturated with a maximum amount of gutta-percha and a minimum amount of sealer Vertical compaction of warm gutta-percha “Has proved most effective in filling the canals of severely curved roots and roots with accessory, auxiliary, or lateral canals, or with multiple foramina.” Preparation before the step-by-step procedure Thoroughly cleaned and continuously tapering canal(s) 6%~10% Fitting the master Gutta-percha cone Prefitting the vertical pluggers Heat transfer instrument Root canal sealer The key to success in this technique--- a successful relationship between the radicular preparation and the master cone using the conventional cone-shaped gutta- percha points not the standardized numbered points the cone must fit tightly in the apical third have “tugback” “Fitting the master gutta-percha cone” Fitting the master gutta-percha cone Prefitting the vertical pluggers the wider plugger -- the coronal third of the canal the narrower plugger -- the middle third the narrowest plugger -- the apical third Schilder Pluggers (designed by Schilder) Heat Transfer Instrument “Touch ’n Heat” 5004, battery-powered (rechargeable) heat source. Heat carrier heats to glowing within seconds to plasticize gutta-percha in canal. Also used in removal of gutta-percha for postpreparation or re-treatment Obtura II delivery system Panel has temperature control and digital temperature display in degrees Celsius. The pistol-grip syringe extrudes plasticized beta-phase gutta-percha through flexible needle Root canal sealer Step-by-Step Procedure of Vertical Compaction of Warm Gutta-percha down-Packing back-Packing (1) Dry the canal Best achieved by using 100% alcohol irrigated deep within the root canal system using thin, safe-tipped irrigating “needles” Dried with paper points Confirm the patency of the foramen with an instrum