DTIN0210

Type I with long tortuous diver- gent separate palatal roots Type II with short blunt and parallel roots Type III those with three convergent roots and distinctly divergent fourth distobuccal root. The tooth treated in this case appears to be of Type I variety according to the Christie’s classification. Accord- ing to literature, it occurs bila- terally, but in this patient it was unilateral. References 1. De Deus QD. Endodontia, 5th ed. Medsi: Rio de Janerio. 1992. 2. Zeigler PE, Serene TP. Failures in therapy. In: Cohen S, Burns RC, eds. Pathways of the pulp. 4th ed. St Louis: CV Mosby 1987: 723-753. 3. Thompson BH. Endodontic therapy of an unusual maxillary second molar. J Endodontics 1988; 14: 143-146. 4. Fahid A, Taintor JF. Maxillary second molar with three buccal roots. J Endodontics 1988; 14: 181-183. 5. Malagnino V, Gallottni L, Pas- sariello P. Some unusual clini- cal cases on root anatomy of permanent maxillary molars. J Endodontics 1997; 23: 127- 128. 6. Diamond M. Dental anatomy including anatomy of the head and neck. New York: MacMillan 1952: 203-205. 7. Sabala CL, Benenati FW, Neas BR. Bilateral root or root canal aberrations in a dental school patient population. J Endodon- tics 1994; 20: 38-42. 8. Libfeld H, Rotstein I. Incidence of four-rooted maxillary second molars: literature review and radiographic survey of 1, 200 teeth. J Endodontics 1989; 15: 129-131. 9. Christie WH, Peikoff MD, Fogel HM. Maxillary molars with two palatal roots: a retrospec- tive clinical study. J Endodontics 1991; 17: 80-84. 10. Etienne Deveaux: Maxillary second Molar with Two Palatal Roots; Vol. 25, No. 8, JOE. 1999 Aug. 11. Peter M.Di. Fiore: A Four- Rooted Quadrangular Maxil- lary Molar Vol. 25, No. 10, JOE. 1999 Oct. 12. Hartwell G, Bellizzi R. Clinical investigation of in vivo endo- dontically treated mandibular & maxillarymolars.J Endodontics 1982; 8: 555-557. DT Fig. 13: Post-obturation view Fig. 14: Post-obturation radiograph Fig. 15: Radiograph of contralateral side Dr P D Joshi graduated in dentistry from Nair Dental College, Mumbai in 1980, and has specialized in conservative dentistry & endodon- tics. He has a private practice specializing in endodontics in Mumbai. In addition, he has taken specialized training in microscopic endodontics from the University of Pennsylvania, USA, and in implant dentistry from Germany. He is an instructor in the department of micro-dentistry at Government Dental College, Mumbai. He lec- tures & demonstrates extensively in India and abroad on endodontics and micro-dentistry. He can be contactedatdrjoshi01@gmail.com. About the author Case report DeNtaltribuNe|april-June, 20108 EMS-SWISSQUALITY.COM Three horizontal nozzle apertures for the air-powder mixture, a separate vertical water nozzle aperture for rins- ing: what used to be off limits is now easily reachable, through gentle action and without any risk of emphysema. And since the Air-Flow Powder Perio is particularly fine, the tooth surface is not damaged. DEEP DOWN, between tooth and gin- giva, billions of bacteria managed to proliferate under the cover of malicious biofilm – until now. Together with the Original Air-Flow Powder Perio, the new Air-Flow handy Perio with its unique Perio- Flow nozzle tracks down biofilm, even in the deepest periodontal pockets. For more information> welcome@ems-ch.com With its new Air-Flow handy Perio, Air-Flow has assigned its latest family member to combat – right on target for subgingival pro- phylaxis in your practice. AIR-FLOW KILLS BIOFILMTHE NEW AIR-FLOW HANDY PERIO GETS RID OF THE ENEMY – WITH GENTLE ACTION AND UTMOST PRECISION Grain size ~ 25 µm