23. Treated with Rotary Nickel Titanium Files Flat Canals * * Will look great on the radiograph
24. Treated with Rotary Nickel Titanium Files Canals with a “ Tear-Shaped” Cross Section * * Will look great on the radiograph
25. Do We Aim for Nice Radiographs or High Quality Endodontic Treatment ?
26. This may explain the frequently encountered enigma : Endodontic failures in roots with apparently good root canal fillings * * Misleading 2D X-Ray images
38. Int Endod J 36: 86-92, 2003 ProTaper Rotary Root Canal Preparation: Effects of Canal Anatomy on Final Shape Analyzed by Micro CT Peters et al 2003 3 D X-Ray
39. Peters et al 2003 Superimposed Images Red : Surface untouched by file Green : Affected surface Clear : Final preparation
40. Percent of Root Canal Surface Unchanged by the File Int Endod J 36: 86-92, 2003 Peters et al 2003 Disto-buccal (n=11) 33 (±19)% Mesio-buccal (n=11) 43 (±29)% Palatal (n=11) 49 (±29)%
41. Paqué et al 2009 ProFile ProTaper Flexmaster Lightspeed GT NiTi K File Percent Untreated Root Canal Surface Adapted from: Paqué et al J Endod 35:1056-9, 2009 Can we do Better ?
42. Peters et al. Int Endod J 2003, 36:86-92 Canal Transportation* (µm) & Canal Straightening (%) in Upper Molars * CM shift
43. (2) Peters et al. Int Endod J 2003, 36:86-92 Canal Transportation* (µm) P MB DB * CM shift Can we do better ?
44. (2) Peters et al, Int Endod J 2003, 36:86-92 Canal Straightening (%) P MB DB Can we do better ?
83. Paqué et al 2009 SAF Current Study ProFile ProTaper Flexmaster Lightspeed GT NiTi K File Percent Untreated Root Canal Surface Adapted from: Paqué et al J Endod 35:1056-9, 2009
84. (1) (2) (1) Peters et al, Int Endod J 2003, 36:86-92 (2) Metzger et al, on-going study Canal Transportation* (µm) P MB DB * CM shift
85. (1) (2) (1) Peters et al, Int Endod J 2003, 36:86-92 (2) Metzger et al , on-going study Canal Straightening (%) P MB DB
99. SAF Cleaning and shaping with NaOCl 3% alternating with EDTA 17% SEM
100. Smear Layer Scoring (Hülsmann 1997) Score 1 No smear layer, dentinal tubules open. Score 2 Small amount of smear layer, some dentinal tubules open. Score 3 Homogenous smear layer, only few dentinal tubules open. Score 4 Complete root canal covered, no open dentinal tubules. Score 5 Heavy, non homogenous smear layer covering the complete root canal wall. X 1000
101. Debris Scoring (Hülsmann 1997) Score 1 Clean root canal wall, few small debris particles. Score 2 Few small agglomerations of debris. Score 3 Many agglomerations of debris covering less than 50% of root canal wall. Score 4 More than 50% of root canal covered by debris. Score 5 Complete or nearly complete root canal wall covered by debris. X 200
137. Journal of Endodontics April 2010 The Self Adjusting File (SAF). Part 1: Respecting the Root Canal Anatomy A New Concept of Endodontic Files and Its Implementation Metzger Z, Teperovich E, Zary R, Cohen R, Hof R J Endod 36:679-690, 2010
138. Journal of Endodontics April 2010 The Self-Adjusting File. Part 2: Mechanical Analysis Hof R, Perevalov V, Eltanany M, Zary R, Metzger Z J Endod 36:691-696, 2010
139. Journal of Endodontics April 2010 The Self-Adjusting File (SAF). Part 3: Removal of Debris and Smear Layer A Scanning Electron Microscope Study Metzger Z, Teperovich E, Cohen R, Zary R, Paqué F, Hülsmann M J Endod 36:697-702, 2010