ABSTRACT
Aim: To describe the clinical management of three teeth with aberrant root canal morphology: a mandibular canine with two radicular canals, maxillary second premolar with three roots and root canals; and maxillary second molar with four roots and root canals, all of which are rare clinical occurrence in our environment. Presentation of Case: This case report summarizes 3 cases with rare root canal morphology treated by non surgical endodontic treatment in which a maxillary first premolar, maxillary second molar and mandibular canine with aberrent root canal morphology. Discussion: It is generally accepted that a major cause for the failure of root canal therapy is an inability to recognize the presence of and to adequately treat all of the canals. The clinical impact of untreated canal spaces may vary from clinical and radio graphical normalcy to severe symptoms of acute pulpitis or apical abscess. Consistent high levels of success in endodontic treatment require an understanding of root canal anatomy and morphology. To achieve endodontic success, the entire root canal system must be derided, disinfected and obturated. The clinician must have a thorough understanding of normal anatomy, and of common variations from the norm. Thus meticulous knowledge of tooth morphology, careful interpretation of angled radiographs, proper access cavity preparation and a detailed exploration of the interior of the tooth is needed to ensure a proper endodontic treatment. Conclusion: The variability of symptoms diagnostic and therapeutic difficulties make the treatment of missed anatomy a challenge for the general dentist; consequently, treatment of these difficult cases should be managed by dentists with advanced training in endodontics.
ABSTRACT
Aims: The purpose of this study was to compare the effect of various irrigation regiments on the push out bond strength of MTA Fillapex sealer to dentin. Study Design: Cross-sectional study. Place and Duration of Study: Department of Conservative dentistry and Endodontics, Hitkarni Dental College and Hospital (HDCH), between November 2014 and December 2014. Methodology: Thirty single-rooted premolar teeth were taken. Roots were divided into 3 groups according to the irrigation regiment used and instrumented using 5% sodium hypochlorite (NaOCl) or 2% chlorhexidine (CHX) irrigants as chemical auxiliary substances and 17% Ethylenediaminetetraacetic acid (EDTA) or 50% citric acid for smear layer removal. Finally, CHX solution was used as the final irrigant in one group. Root canals were filled with gutta-percha and MTA fillapex (Angelus, Londrina, PR, Brazil),a resin-based sealer. Bond strength was measured by the push-out test. Data were statistically analyzed by Kruskal-Wallis and Mann-Whitney U tests. Results: In the present study, specimens in G1 (NaOCl + EDTA + Distilled Water) & G2 (CHX + EDTA+ Distilled Water) group show lower push out bond strength values than G3 (NaOCl+ EDTA + Citric Acid +CHX) group. Conclusion: Thus, within the limitations of this study, we conclude that the different irrigation regiments did affect the push out bond strength of MTA Fillapex sealer to dentin. However the significant changes were not found between the various groups.