Evaluation Of The Effectiveness Of Sodium Hypo Chlorite And Edta On Removal Of The Mixture Of Calcium Hydroxide, Chlorhexidine And Lycopene From The Root Canal: A Sem Study

Introduction: The goal of this study was to evaluate the effectiveness of different irrigation solutions on the removal of calcium hydroxide, Chlorehexidine and Lycopene mixture from the root canals by NaOCl, EDTA alone or combination of NaOCl and EDTA. Materials and Methods: Thirty eight single rooted teeth were taken. Root canals were prepared by standardized instrumentation up to Master Apical File 45 and irrigated with 2.5% NaOCl after each instrument, followed by 10 mL 17% EDTA as a final rinse. The canals were filled with Calcium hydroxide, Chlorehexidine and Lycopene mixture and stored for 7 days. Specimens were randomly divided into 3 experimental groups (n = 10) according to irrigation protocols. Positive and negative control groups (n = 4) were included. Group 1: the root canals were irrigated with 5 mL 2.5%Naocl, group 2: the root canals were irrigated with 5 mL 17% EDTA, Group 3: the root canals were irrigated with 2.5 ml Naocl and 2.5 ml EDTA. The specimens were longitudinally sectioned and evaluated with scanning electron microscope and scored by 2 examiners. .Results: The kappa test showed that there was substantial agreement between the 2 examiners values for scoring the calcium hydroxide dressing in the coronal, middle, and apical thirds in each group. All irrigation regimens left debris on the canal walls. Among all the groups, NaOcl and EDTA combination is efficacious in removal of calcium hydroxide dressing from the root canal followed by EDTA, NaOCl in coronal, middle and apical thirds.( P< 0.05)Conclusion: According to the findings of the present study, combination of NaOCl and EDTA could be used effectively for the removal of Calcium hydroxide, Chlorehexidine and Lycopene mixture from the root canals.

Color and its Dimensions - A Review.

In the modern civilized, cosmetically conscious world, well-contoured and well-aligned white teeth set the standard for beauty. Such teeth are not only considered attractive, but are also indicative of nutritional health, self-esteem and hygienic pride. Attention to accuracy and reliability of any spectral or color measurement system, with further attention to the proper statistical parameters to evaluate accuracy and reliability.

Effect of Morinda Citrifolia Juice and Triphala as Root Canal Irrigants on Sealer Penetration Depth Into the Dentinal Tubules. – A Confocal Laser Microscope Study.

Aim: The aim of this study was to evaluate the effect of Morinda citrifolia juice (MCJ) and Triphala on sealer penetration depth into the dentinal tubules as root canal irrigants. Materials and Methods: Forty five single rooted extracted human teeth were collected; decoronated and root canal length were standardized to16mm. Cleaning and shaping was done with protaper universal rotary instruments till F5. 30 samples were selected randomly and divided into two groups with 15 samples in each, according to the final irrigation regimen. In Group I, 5 ml of MCJ was used for 1min and in Group II; 5 ml of Triphala was used. The remaining 15 samples were irrigated with 5ml of Smear clear which acted as a positive control Group. Obturation was done with corresponding gutta-percha points and AH 26 sealer (Dentsply; DeTrey, Konstanz, Germany) labelled with fluorescent dye and left to set for 48 hrs. Then, the roots were sectioned and subjected to confocal laser microscope. Results: Statistical analysis was done by two-way analysis of variance (ANOVA) and Tukey multiple post-hoc procedures. The sealer penetration depth is higher in the MCJ group than the Triphala group at all three levels. Conclusion: MCJ showed a significant sealer penetration depth than Triphala.

A Review of In Vitro Evaluation of Shaping Ability Assessment Techniques-An Evolution from Past to Present.

The ideal preparation for a root canal is a continuously tapered funnel shape with the smallest diameter at the apex and the widest diameter at the canal orifice. The main parameters used to evaluate a technique or an instrument which has been developed for root canal preparation should be ‘shaping the root canal whilst protecting the curvature of the canal’. Various methods have been proposed for evaluation of shaping ability of instruments. A reliable standardization and proper methodology is necessary for proper positioning of samples for obtaining images before and after root canal preparation. All techniques have their own benefits and limitations.

Methods for Quantifying Sealing Ability of Endodontic Sealers-A Review.

The current concept among clinicians is that after complete debridement, a three-dimensional obturation of the root canal space that is free of inflammation constitutes the key factor for successful endodontic therapy. Different sealer formulations have been subjected to extensive research with respect to their mechanical and biological properties, reflecting the prevailing belief that the appropriate selection of a sealer and its clinical performance may influence, at least in part, the outcome of endodontic therapy. Many techniques have been suggested and evaluated, most of them advocating the use of gutta-percha as the core material and with sealer of a different composition to fill the residual gaps between the individual gutta-percha points and between the gutta-percha and the canal wall. Evaluating the sealing competency of the sealers to the root canal walls is utmost consequential for the presage of outcome of treatment.