Dental Tribune United Kingdom Edition

21Endo TribuneApril 9-15, 2012United Kingdom Edition P5 Newtron Range P5 Newtron XS with LED Apical Surgery Tips IrriSafe Tip Endo Success Tips Extremely versatile ultrasonic and irrigation products for endodontic treatments. TIPPED FOR SUCCESS W e t o c r e a t e For further information: 01480 477307 info@acteongroup.co.uk | sales@acteongroup.co.uk | www.acteongroup.com Our complete series of ultrasonic generators are available with or without self-contained irrigation and LED light. Other options include the Sterikit and a wide selection of tips. (Free CD-ROM Tip Book is available on request) 2012 Tipped For Success A4 Ad_2012 Tipped For Success A4 Ad 06/01/2012 12:29 Page 1 predictable healing. The role of root canal prepa- ration has therefore undergone a shift from one primarily fulfill- ing a debriding function to one regarded more as establishing radicular access to the complex root canal system, for irrigation and obturation (Gulabivala et al. 2005). Root canal irrigants should be biologically compatible, chemi- cally able to remove both or- ganic and inorganic substrates, be antibacterial, demonstrate good surface wetting , have no adverse effects on remaining tooth structure and be easy to use and effective within clinical parameters (Gulabivala et. al 2005). Penetration of irrigants in to the root canal is a function of ir- rigating needle diameter in re- lation to preparation size (Ram 1977), and placement of the nee- dle closer to the working length increased the efficiency of irri- gation (Abou-Rass & Piccinino 1982, Sedgeley et al. 2005). Improvement of the effi- ciency of irrigation especially in the apical third of the root canal system has been attempted by agitating the irrigant. The use of hand-files, pumping of well adapted GP cones (manual dy- namic), continuous irrigation during rotary instrumentation and sonic and passive ultrasonic devices have all been described (Gu et al. 2009). Richman first described the use of ultrasonics in endodon- tics in 1957. Endosonics was a term first described by Martin and Cunningham (1984) and referred to the simultaneous preparation and irrigation of root canals. Passive ultrasonic ir- rigation (PUI) was first described by Weller et al. (1980) and re- lates to the non-cutting action of the ultrasonically activated file. The free movement of the file or wire allowed irrigant to pen- etrate more easily into the apical part of the root canal (Krell et al. 1988) However significant prob- lems were encountered with k-files as they produce irregu- lar shapes and apical perfora- tions (Stock 1991, Lumley et al. 1992), straightened canals (Che- nail & Teplitsky 1985, 1988) and ledged simulated root canals (Al Jadaa et al. 2009). IrrisafeTM (from Acteon UK) is a stainless steel instru- ment that is non-cutting, paral- lel sided and available in two lengths (21 and 25 mm) and two tip sizes (ISO 20 and 25) and de- signed to be used after root canal shaping is complete to agitate freshly delivered irrigants. It can be pre-bent in curved canals and introduced to 1mm short of the working length. It should fit loosely within the pre- pared canal shape so that the movement of the irrigant around the tip is uninhibited and the tip can vibrate freely. Once insert- ed, the power is activated and the violent movement of the ir- rigant “scrubs” the walls of the canal thereby implying the effec- tive removal of dentine debris, micro-organisms (biofilm and planktonic bacteria) and organic tissue from the root canal (van der Sluis 2007). The technique requires that the NaOCl irrigant is delivered in page 22DTà Fig 4 Fig.5