Dental Tribune United Kingdom Edition

James W Prichard MSc, BDS, LDS RCS, MFGDP; DRDP; FADFE April 9-15, 201222 Endo Tribune United Kingdom Edition Evolutioninaction The original LED turbine just got even better! But not all LEDs are the same - and we want our customers to have the best. So we are pleased to announce that W&H has raised the bar once again! Improved positioning of the LED source at the head of the handpiece ensures accurate bright illumination of your treatment site. The new LED+ also has an unparalleled Colour Rendering Index (CRI) giving colours a supremely natural feel. And Synea has a small head too, so your daylight quality light will not be obscured by your handpiece. Contact W&H today to see things more clearly with Synea LED+. W&H (UK) Limited 6 Stroud Wood Business Centre Park Street, St Albans HertfordshireAL22NJ,UnitedKingdom t +44 (0) 1727 874990 f +44 (0) 1727 874628 e office.uk@wh.com wh.com ISO 9001: 2008 Certificate No. FS 36436 + *Conditions apply Synea offers an unbeatable range of handpieces to meet the needs of our customers. This range includes W&H’s revolutionary range of LED handpieces. AndallthisfromthesterilizerwiththefastesttrueBcycleonthemarket! ContactW&HtodayforadviceonhowtocomplywithHTM01-05theLisaway. W&H(UK)Limited 6StroudWoodBusinessCentre ParkStreet,StAlbans HertfordshireAL22NJ,UnitedKingdom t+44(0)1727874990 f+44(0)1727874628 eoffice.uk@wh.com wh.com ISO 9001: 2000 Certificate No. FS 36436 Registered Member HTM01-05simplified! AndallthisfromthesterilizerwiththefastesttrueBcycleonthemarket! ContactW&HtodayforadviceonhowtocomplywithHTM01-05theLisaway. W&H(UK)Limited 6StroudWoodBusinessCentre ParkStreet,StAlbans HertfordshireAL22NJ,UnitedKingdom t+44(0)1727874990 f+44(0)1727874628 eoffice.uk@wh.com wh.com ISO 9001: 2000 Certificate No. FS 36436 Registered Member HTM01-05simplified! Unbelievable Value: Buy four W&H Synea Handpieces & receive the least expensive FREE* A4 Indesign.indd 1 19/12/2011 16:36 page 21DTß Key features of IrriSafe • Driven by the Newtron® range of piezoelectric gen- erators, IrriSafeTM gener- ates micro-cavitation and micro-currents that spread through the canal system. It is the best instrument for the passive ultrasonic irrigation currently avail- able • The irrigant effect is amplified not only by the mechanical activation pro- vided by the vibration, but also by the heating effect of the ultrasonics, that in- tensifies the sodium hy- pochlorite dissolution and debridement properties • Non-cutting edges to pre- vent any damage to the root canal anatomy • IrriSafe is more efficient than smooth wires, be- cause its loops generate turbulences and optimize the irrigant activation • The blunt-end prevents any perforation to the apex or to the canal walls • The special steel bene- fits from a specific surface treatment that provides the instrument with a better re- sistance and transmission of the ultrasonic vibrations and a complete compatibil- ity with sodium hypochlo- rite, versus nickel-titanium ultrasonic wires Godfrey Cutts and I run an annual two-day endo- dontic re-treatment course, throughout which we also use Acteon’s Endo Success Kit. This ultrasonic tips kit has been designed as a solution for the problems most often encountered during non-surgical en- dodontic treatments. The new titanium-niobium al- loy allows optimum use of ultrasound in the trickiest situations. The current trend in surgical techniques is to offer minimally – or even non- invasive proto- cols. By using an operat- ing microscope, together with high-tech micro-in- struments, it is now possi- ble to treat the entire root canal 3ml boli via a syringe fitted with a side vented needle and then Ir- risafeTM is inserted and activated for 20 seconds. This is repeated three times. In oval canals the tip can be moved towards the walls (avoiding contact dampening) to encourage fluid movement into these areas. Ideally EDTA liquid is then inserted and agitated for a fur- ther 20 seconds before a final flush of NaOCl is performed. The canal(s) can then be dried and obturation carried out according to preference. n The results of the study The mean percentage change in cross-sectional area and diam- eter in descending order were: Group 2 - 52.7 per cent and 26.2 per cent; Group 5 - 42.6 per cent and 25.8 per cent; Group 4 - 23.2 per cent and 9.4 per cent; Group 3 - 14.6 per cent and 5.1 per cent; Group 1 - 6.5 per cent and 3.8 per cent. Linear regression anal- ysis of the data from Groups 1, 2 and 4 revealed that canal dimen- sions were significantly affected by irrigant regime (p=0.0001), corono-apical level (p=0.009) and duration of irrigant agitation (p<0.0001). Analysis of the data from Groups 3, 4 and 5 revealed that both corono-apical level (p=0.009) and duration of agi- tation of the irrigant (p<0.0001) significantly affected the in- crease in canal dimensions. Conclusions: The test model established that there is a clini- cally insignificant change in root canal dimensions when manu- facturer’s instructions were fol- lowed (Group 4). Irrigant choice and combination, duration of agitation and corono-apical lev- el all had a significant effect on the dimensions of the artificial root canal. DT About the author