Ajay Saxena

A rare case of maxillary first molar with single root and single canal diagnosed using spiral computed tomographic scan.

Variations in dental anatomy and canal morphology are found in all teeth. Knowledge of these variations, particularly the location and treatment of all canals, plays a key role in the success of endodontic therapy. The presence of extra canals, apical ramification, or lateral canals is commonly encountered, and their incidence and significance have been well-documented. However, the clinician should also be aware of the possibility of the existence of fewer root and/or canal numbers. Here is a case report of left maxillary first permanent molar with a single root and single canal. The goal of this clinical article is to report a maxillary molar with single root and single canal and to highlight the role of spiral computed tomography (SCT) as a method to confirm the three-dimensional (3D) anatomy of teeth.

A finite element study to compare the forces generated by a newly designed NITI file with an established rotary file

Aim: A im of this study is to evaluate the lateral forces on the instrument in the apical 3rd of curved canal with two Nickel Titanium rotary systems. Methodology: One brand of instrument RaCe no 25 was scanned with micro computed tomography to produce a real-size, 3-d imensional (3-D) model and was compared with Anexas (designed by authors). The stresses on the instrument during simulated shaping of the root canals were analyzed numerically by using a 3 D fin ite element (FE) package, taking into account the nonlinear mechanical behavior of the NiTi material. Results: Anexas shows lowest values for force generation in the apical 3rd of canal as compared to RaCe which shows higher values. Conclusion: With FE simulation of root canal shaping by two files, it was observed that different instrument designs would experience unequal amount of force generation in canal, as well as reaction torque from the root canal wall.

Surgical retrieval of foreign object from labial mucosa and iatrogenic perforation repair with mineral trioxide aggregate

During routine dental procedures like root canal treatments, it is unusual that a foreign body gets entrapped or lost in the adjacent soft tissue of the oral cavity. But sometimes due to unexpected movement of the patient or careless handling of the instruments, some instruments may get into the soft tissue surrounding the area of operation. Most of these should be removed immediately to prevent further complications, such as inflammation and infection. However, it is not an easy job to locate the exact location of the foreign body in the soft tissue especially if it is very small in size. We describe an unusual case of an embedded broken endodontic file in the buccal mucosa that may have been lost during previous endodontic procedure which was left incomplete. The location of the foreign body (endodontic file) was accurately identified using routine radiographic procedure (RVG), which was then safely removed by minimal invasive surgical intervention, followed by completion of the endodontic treatment of the involved teeth using MTA for buccal perforation repair.

Comparison of different irrigating solutions on root canal disinfection after mechanical preparation by using scanning electron microscope: An in vitro study

Objectives: The aim of this in vitro study was to compare the efficacy of different irrigating solutions on root canal system and analyzing smear layer using scanning electron microscope (SEM). Materials and Methods: Fifty mandibular premolars were decoronated and split longitudinally. Each root half was divided into five groups (n = 10): Group I - 3 ml of physiological saline, Group II - 3 ml of 2.5% sodium hypochlorite (NaOCl), Group III - 1 ml of 10% citric acid, Group IV - 2% chlorhexidine (CHX) gluconate (Vishal Dentocare, India), Group V - Largal Ultra (ethylenediaminetetraacetic acid [EDTA] 15% + cetrimide 0.75%), Septodont (Saint-Maur-des-fosses, France), and Group VI - Smear Clear (Sybron Endo, Orange, CA, USA) (17% EDTA, cetrimide, and a special surfactant). Irrigation regimens were performed for 1 min. The presence or absence of smear layer at the coronal, middle, and apical portion of each canal were examined under an SEM. Results: A significant difference (P < 0.001) in smear layer removal between smear clear and Largal Ultra at the apical and middle third of the canal was observed. The presence of debris is more obvious in the apical third rather than in the middle and coronal part of the root canals. Conclusion: Largal Ultra, Smear Clear, and the citric acid removed the smear layer more efficient way as compared to CHX, NaOCl, and saline solutions.

Endodontic Management of Maxillary Canine with Two Canals

Aim: To report a case of endodontic treatment of a maxillary right canine in which an extra canal was located and successfully treated. Presentation of Case: A 35 year old male reported with pain in maxillary right canine. Pain was dull and intermittent in nature. Instrumentation revealed the presence of another root canal. Endodontic treatment was performed and the patient reported complete relief of pain and foun d to be asymptomatic after a 3 - month period. Discussion: A thorough knowledge of both the external and internal anatomy of teeth is an important aspect of root canal treatment and is essential for the highest possible chances of success. Failure to locate and treat an extra canal/s is one of the most common causes of failure of root canal treatment. In the teeth particularly with additional root canals or anatomical variations, root canals are often left untreated because the clinicians fail to identify the ir existence.

Full Mouth Rehabilitation a Multidisciplinary Approach: Case Report

A desire to look attractive is no longer taken as a sign of vanity. Since the face is the most exposed part of the body, and the mouth a prominent feature, teeth are getting a greater share of attention. The severe wear of anterior teeth facilitates the loss of anterior guidance, which protects the posterior teeth from wear during excursive movement. The collapse of posterior teeth also results in the loss of normal occlusal plane and the reduction of the vertical dimension. This case report describes 77-year-old female, who had the loss of anterior guidance, the severe wear of dentition, and the reduction of the vertical dimension. Occlusal overlay splint was used after the decision of increasing vertical dimension by anatomical landmark, facial and physiologic measurement. Once the compatibility of the new vertical dimension had been confirmed, interim fixed restoration and the permanent reconstruction was initiated.