Aim:The aim of this study was to evaluate the influence of manual versus mechanical glide path (GP) on the surface changes of two different nickel-titanium rotary instruments used during root canal therapy in a moderately curved root canal.Materials and Methods:Sixty systemically healthy controls were selected for the study. Controls were divided randomly into four groups: Group 1: Manual GP followed by RaCe rotary instruments, Group 2: Manual GP followed by HyFlex rotary instruments, Group 3: Mechanical GP followed by RaCe rotary instruments, Group 4: Mechanical GP followed by HyFlex rotary instruments. After access opening, GP was prepared and rotary instruments were used according to manufacturer's instructions. All instruments were evaluated for defects under standard error mean before their use and after a single use. The scorings for the files were given at apical and middle third.Statistical Analysis Used:Chi-squared test was used.Results:The results showed that there is no statistical difference between any of the groups. Irrespective of the GP and rotary files used, more defects were present in the apical third when compared to middle third of the rotary instrument.Conclusion:Within the limitations of this study, it can be concluded that there was no effect of manual or mechanical GP on surface defects of subsequent rotary file system used.

The Action for Dental Health Act of 2017 bill is intended to prevent dental disease and divert dental emergencies from high-cost centers (like hospital emergency rooms) to dental offices. Lines 15–17 of the bill include grant funding to support portable or mobile dental equipment, and this should lead to an expansion of opportunities to deliver and receive care through the use of portable dental equipment and mobile dental vans, i.e., portable and mobile dentistry (PMD). Historically, PMD has been valuable to bridge the access gap for those for whom transport can be a challenge, like children and the elderly. However, PMD could be valuable to large employers, allowing the employees to receive dental care with minimal disruption to their workday. Oral pain is known to affect work and school attendance, and improving access to dental care could benefit individuals, families, organizations, and communities.

Title: Spectrophotometric assessment of tooth discoloration induced by various Antibiotic pastes. Aim: To evaluate tooth discoloration induced by various Antibiotic pastes using spectrophotometer. Materials and Methods: Sixty extracted upper front tooth were selected for the study. Access opening was done and root canal of each tooth was instrumented with hand files. The tooth were then randomly divided into 3 groups: Group A (Triple antibiotic paste: Ciprofloxacin+ Metronidazole+Minocycline), Group B (Modified Triple antibiotic paste: Ciprofloxacin+ Metronidazole+ Clindamycin) and Group C (Double antibiotic paste: Ciprofloxacin+ Metronidazole). In all the groups, medicaments were only applied inside the root canals of the teeth and access cavity was sealed with cotton pellet and temporary restoration. Spectrophotometric readings were obtained from buccal surface of the teeth immediately after placing the medicaments (Baseline data) and at 1 week and after 2 months. Based on spectrophotometric readings at different time interval, ∆E was then calculated. Data were analyzed using 2-way (ANOVA) tests. Results: The maximum color change (ΔE) was observed at 2 months with Triple antibiotic paste (p < 0.0001) followed by Modified Triple antibiotic paste. No significant color change was noted with Double antibiotic paste. Conclusion: Antibiotic paste should be used judiciously inside the root canals of teeth to eliminate chronic root canal infection due to risk of tooth discoloration. Double antibiotic paste is a more promising option.