objective: better understanding of the furcation anatomy may serve to decrease the risk of root perforation. the purpose of this study was to measure the thickness of root walls in the danger zone in mandibular first molars. materials and methods: the roots of 53 extracted human mandibular first molars were sectioned in the horizontal plane 4 mm below the orifice of the mesial and distal root c...

introduction: the aim of this study was to evaluate root canal anatomy of mandibular first molars (mfm) in a selected iranian population using clearing technique. methods and materials: a total of 150 extracted mfms were cleared. the root canal morphology (including the root numbers and root length) and the anatomy of the root canal system (including is the number and type of canals based on ve...

Thorough cleaning and shaping and followed by three-dimensional obturation is secret to successful clinical endodontics. Therefore, it is imperative that aberrant anatomy should be identified before and during root canal treatment. Multiple case reports of aberrant canals morphology in the mesial root of mandibular first molar have been documented. However, fewer studies have discussed the occu...

Endodontic treatment of mandibular molars is challenging because of variable root canal morphology. The nonsurgical endodontic management of a mandibular first molar presenting an independent middle mesial canal is reported. After coronal access, additional clinical inspection of the mesial canals' orifices and their interconnecting groove using an endodontic explorer and 4.5× loupes enabled th...

Successful root canal treatment requires adequate knowledge regarding morphologic variations in root canal system of teeth. This report describes a six-canalled mandibular first molar with four mesial root canals requiring endodontic retreatment. The two additional canals in the mesial root were found during retreatment with the aid of illumination and magnification. In conclusion, the possibil...

INTRODUCTION The root canal treatment of a mandibular molar with aberrant canal configuration can be diagnostically and technically challenging. METHODS This case report presents the clinical management of a mandibular first molar with three separate mesial canals including middle mesial canal, which was confirmed by cone-beam computed tomography (CBCT) images. RESULTS Posttreatment images ...

Eradication of microbes from root canals and impeding of further reinfection is the basic support of endodontic treatment. This is achieved by overall disinfection and shaping of canals which can then be filled using a three-dimensional filling with a fluid-tight seal. To achieve these goals, the clinician must have integral knowledge of regular anatomy and anatomic variants of root canals. One...

The present study was conducted to determine the number of roots and morphology of the root canal system of permanent mandibular first molars (M1) in a Sri Lankan population. Sample of 529 M1 teeth was used. The number of roots was examined and the lengths of the mesial and distal roots were measured to the nearest 0.01 mm. Vacuum injection protocol was used to inject China ink into the root ca...

AIM The aim of this in-vivo study was to assess the incidence of three roots and four root canals in clinical cases of root-treated mandibular first molars in a Saudi Arabian population. METHODOLOGY A clinical study of 251 root-canal treated permanent mandibular first molars was conducted. The teeth were examined clinically and radiographically. RESULTS The results showed that 5.97% of the ...

The main objective of endodontic therapy is the thorough mechanical and chemical cleansing of the entire root canal system and its complete obturation with an inert filling material. Failure to find and fill a canal contributes toward the failure of endodontic therapy .The root canal anatomy of mandibular first molars is complex. Studies of the morphologic structure of root canal systems hav...