Comparative study of the root canal cement that contains paraformaldehyde and with zinc oxide eugenol cement. Bali Rajiv1, Professor, Gill K.S., Principal (Retd), Dua S.S., Principal (Retd) 1Address for Correspondence: Dr. Rajiv Bali Luxmi Bai Institute of Dental Sciences & Hospital. Patiala. Punjab. Rajivbali@sify.com
Online published on 7 December, 2011. Abstract It is believed that the success of the mot canal treatment depends upon the endodontic triad i.e. thorough preparation of the root canal, sterilization and hermetic sealing of the root apex. But this is not true in teeth with varied root canal anatomy in which half of the surface area of the canal may never be touched by the instruments. Inadequate preparation of root canal, due to anatomical variations, will lead to the formation of voids in which the tissue fluids and/or inflammatory exudates stagnate. (It will serve) serving as a culture medium for micro-organism resulting in the failure of endodontic therapy. In orderto destroy the micro-organisms and fill those voids left in the prepared canals, many intracanal medicaments have been introduced in the form of root canal pastes/sealers. Root canal filling pastes containing formaldehyde, usually in form of paraformaldehyde, have been advocated for use as a means of sterilizing and filling the root canal. Paste containing paraformaldehyde was introduced for treatment of diseased pulp by Gysi in 1898. Thereafter, root canal cements, namely N2 and Reiser's root resin filling containing paraformaldehyde, were introduced. The cement containing fonvaldehyde exerts bacteriocidal action and tissue fixative effects which extend even beyond the area of its application. The bacteriocidal action of the fonvaldehyde has been attributed to its action with vital amino group of bacterial enzyme system. Paraformaldehyde is a polymer of formaldehyde which converts to formaldehyde at the body temperature thus exerting its effects. Use of paraformaldehyde as a component of root canal cement has produced a great deal of controversy in endodontic therapy. In this study, an attempt has been made to evaluate clinically and radiographically the effectiveness of cement containing paraformaldehyde over the conventional zinc oxide eugenol cement in the periapically involved teeth. Top |