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Objective: This study compared the compressive strength and flexural strength of Centurion N with other conventionally used restorative materials.Materials and methods: Cention N, Amalgam, Glass Ionomer Cement and Hybrid composite resin was used for sample fabrication. A total of 80 specimens were prepared. Forty samples (n = 10 each) were prepared for compressive strength and other 40 samples (n = 10 each) were prepared for flexural strength using aluminum split molds.The samples were tested using a universal Instron testing machine (UTM). Data were statistically analyzed using the Games-Howell post hoc test to determine whether statistically significant differences (p < 0.05) existed among the various restorative materials.Results: Compressive strength and flexural strength of composites was significantly higher than cention N, GIC, and amalgam. Compressive strength of cention N was significantly higher than GIC. Flexural strength of cention N was found to be significantly higher than GIC and Amalgam. Conclusion:Within the limitations of this study, it can be concluded that composite had the highest compressive strength and flexural strength of the four materials tested. However, cention N can be used in various restorative procedures in daily dental practice as a basic filling material along with tooth matching ability, it has good comparable mechanical properties and unlike composite, it's economical to patients.

Aim The aim of this study was to evaluate the bond strength and thereafter analyze the mode of failure of the three sealers applied to smear free radicular dentine with final drying using 70% isopropyl alcohol and paper points. Materials and methods A total of sixty root canals were prepared and then segregated into two groups ( n = 30) as per the drying protocol, namely paper points or 70% isopropyl alcohol. Then, these roots were divided into three sub-groups ( n = 10) with respective sealers and obturation materials, namely AH Plus and gutta-percha (AH/GP), EndoSequence BC and gutta-percha (EBC/GP), and MTA Fillapex and gutta-percha (MFP/GP). The roots were then sectioned from each third, and the push-out test was performed. Failure modes were examined under a stereomicroscope. Data were statistically analyzed by 2-way analysis of variance post hoc Tukey tests with a significant level of 5%. Results Overall canals dried with isopropyl alcohol showed higher bond strength values than paper point ( p < 0.05). The AH/GP group showed lower bond strength than EBC/GP ( p < 0.05) but higher than MFP/GP ( p < 0.05). The most frequent type of failure was cohesive in the AH/GP group and adhesive in the EBC/GP group whereas MFP/GP had almost similar adhesive and cohesive failures. Conclusion Seventy percent isopropyl alcohol drying improved the bond strength of the root canal sealers with the dentinal tubules better than the ideal paper point drying. How to cite this article Khurana N, Chourasia HR, et al. Effect of Drying Protocols on the Bond Strength of Bioceramic, MTA and Resin-based Sealer Obturated Teeth. Int J Clin Pediatr Dent 2019;12(1):33–36.

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Context: Wound healing and associated tissue regeneration process are significant to successful outcomes during periodontal therapy. Hyaluronic acid (HA) is one of the important promoting factors that facilitate cell migration and differentiation during this process. Aim: The aim of the present study was to evaluate the efficacy of HA as a therapeutic bone regenerant in conjunction with scaling and root planing in the treatment of intra-osseous defects in chronic periodontitis patients. Settings and Design: The present study was planned as a randomized controlled trial on chronic periodontitis patients aged between 25 and 55 years comprising 120 sites with clinically confirmed intrabony pockets ≥5 mm. Materials and Methods: The patients were allocated to two groups using simple randomization process as Group A, wherein mechanical disruption of plaque biofilm was followed by placement of HA gel (HA gel) and Group B, wherein scaling and root planing alone were used as a treatment modality. The clinical parameters recorded at baseline and on follow-up visits after 4 and 6 weeks of the procedure included gingival index (GI), plaque index (PI), probing pocket depth (PPD), and clinical attachment level (CAL). Statistical Analysis Used: Statistical analysis was performed using IBM SPSS statistics 17 (Chicago, USA). A comparison of different parameters within the group was made using unpaired t-test, while a comparison between the groups was made using paired t-test. P < 0.05 was considered statistically significant. Results: On intragroup comparisons, for GI, there was seen a statistically significant decrease in the mean GI scores at different time intervals in both the groups (P < 0.001 for both Group A and Group B for baseline vs. 4th week and baseline vs. 6th week comparisons, while P = 0.04 for Group A and P = 0.008 for Group B for 4th week vs. 6th week comparisons). For PI, there was seen a statistically significant decrease in the mean PI values at different time intervals in Group A and B except from the 4th- to 6th-week interval. For PPD, there was seen a statistically significant decrease in the PPD at different time intervals in Group A (P < 0.001 for Group A for baseline vs. 4th-week and baseline vs. 6th-week comparisons, while P = 0.01 for 4th week vs. 6th-week comparison), though, for Group B, statistically significant only when compared from baseline versus 6th week (P = 0.006). For CAL, the results were statistically significant in the baseline versus 4th-week and baseline versus 6th-week interval while insignificant in the 4th-week to 6th-week interval in Group A while on the contrary, the results were statistically significant only in the baseline to 6th-week interval in Group B and insignificant in the baseline versus 4th week and 4th week to 6th-week interval. On intergroup analysis, the results were statistically significant for all the parameters at the 4th- and 6th-week interval (P < 0.001), though, insignificant at baseline. Conclusion: HA gel in conjunction with scaling and root planing aided regeneration of bone in intraosseous defects in chronic periodontitis patients, leading to significant improvement in the clinical parameters recorded.