Journal of Conservative Dentistry最新文献

Introduction: This study's objective was to assess and compare postoperative pain response between bioceramic sealer (Nishika BG) and epoxy resin based (AH Plus) in patients with primary endodontic lesion at time interval of 24 h, 48 h, and 7 days using the Visual Analog Scale (VAS).

Materials and methods: The study included 40 individuals with necrotic pulp and apical periodontitis. Calcium hydroxide was administered as the intracanal medication during the two-visit endodontic therapy. They were subsequently allocated randomly to either the AH Plus root canal sealer or the Nishika Canal Sealer BG, with a total of 20 participants in each group. Patients were told to use a VAS to rate their postoperative pain severity as none, minimal, moderate, or severe after 24 h, 48 h, and 7 days following obturation using the appropriate sealers.

Results: Nishika Canal Sealer BG (CS-BG) has a lower pain score as compared to the AH Plus group at 24-h time point. VAS ratings for both the groups decreased over time. According to the intergroup analysis, there was a significant difference in postoperative pain at the 24 h (P = 0.022), but not at the 48 h or 7 days (P > 0.05).

Conclusion: Although bioceramic sealer (Nishika Canal Sealer BG) resulted in significantly lower levels of pain as compared to epoxy resin-based sealer (AH Plus) at 24-h interval, there was no significant difference of postoperative pain at 48-h interval and 7-day period.

Objective: The objective of this study was to study the effect of medicated toothpaste on oral health, a 6-month follow-up.

Methods: Four hundred and twenty-seven participants were screened and followed up for 6 months. The intraoral examination was performed to record caries, gingival bleeding, and plaque index. Saliva collected was evaluated for pH, total antioxidant capacity (TAC), malondialdehyde (MDA), and Vitamin C level for 6 months, and data were analyzed.

Results: On the usage of medicated toothpaste with herbal extract for 6 months, the salivary pH levels were increased, the interquartile range for plaque, and the gingival bleeding index decreased. The percentage change in salivary TAC, MDA, and Vitamin C levels in the caries-free group of subgroup I was 174.8, 58.06, and 59.98, respectively, in subgroup II was 133.3, 52.08, and 58.51, and in subgroup III was 63.77, 45.11, and 47.77. The percentage change in salivary TAC, MDA, and Vitamin C levels in the caries-active group of subgroup I was 136.62, 57.27, and 72.83, subgroup II was 108.59, 37.50, and 61.55, and in subgroup III was 35.62, 30.82, and 54.10, respectively.

Conclusion: The salivary pH levels increased on the usage of medicated toothpaste with herbal extract; plaque and the gingival bleeding index scores were decreased. The salivary antioxidant defense was increased in individuals using medicated toothpaste with herbal extracts which signifies an improvement in overall oral health in the 6-month follow-up.

Introduction: A special heat-treated endodontic file (TruNatomy) was recently introduced with the claim of superior flexibility to enhance dentin preservation. The aim of the present study was to assess postoperative pain in single-visit root canal treatment with this newly introduced file, comparing it with other contemporary reciprocating and rotary file systems.

Materials and methods: One hundred seventy patients with acute irreversible pulpitis in maxillary premolars were randomly assigned to four experimental file systems: TruNatomy, HyFlex EDM, EdgeFile, and ProTaper Gold. Pre- and postoperative pain scores were assessed with 10-point visual analog scale. Data were statistically analyzed using Kruskal-Wallis test.

Results: TruNatomy file system had significantly the highest postoperative pain incidence (53.8%), while the EdgeFile system had significantly the least postoperative pain incidence (24%) and 24-h pain score.

Conclusion: The present study demonstrated that the reciprocating multiple-file system, EdgeFile, had significantly reduced postoperative pain incidence compared to other heat-treated rotary nickel-titanium file systems.

Introduction: Root canal retreatment is typically viewed as an "all or nothing" approach. Whether there is periapical pathosis or not, it is advised that all restorative and obturation materials be removed from all roots. Selective root retreatment, a new therapeutic strategy, allows retreatment to be restricted to a single root or multiple roots exhibiting periapical pathosis. To address the issues, "guided endodontics," a unique guided technique for the preparation of apically extended access cavities, was introduced.

Materials and methods: In this in vitro experimental study, 22 freshly extracted two-rooted maxillary first premolars were selected and divided into two groups (n = 11). Pretreatment cone-beam computed tomography imaging of all teeth was performed. Root canal treatment was performed for all samples followed by postendodontic composite restorations with the occlusal stamp technique. Then targeted endodontic retreatment (TER) was done with the conventional method and guided method respectively. The tooth substance loss was measured and evaluated using Ez3D-i-3D-software (VATECH) and work precision was determined by calculating the dentinal loss. Statistical data analysis was done by Independent t-test for substance loss measurement and Chi-square test was used to measure the dentinal loss.

Results: TER with conventional method showed significantly higher substance loss with t = 4.591 (P < 0.05) and significantly higher dentinal loss measured in conventional method (P < 0.05).

Conclusion: In comparison to traditional TER, TER using a customized bur and three dimensions (3D)-guide results in much less substance loss. The dentinal loss was much lower in 3D-guided approach.

Aim: The purpose of this study was to evaluate the efficacy of 3% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX), and chitosan nanoparticles against Candida albicans using the agar disc-diffusion test.

Materials and methods: Strain of C. albicans was cultivated in Sabouraud Dextrose Agar. Chitosan nanoparticles were synthesized using an ionic gelation method. Four groups were made according to the irrigants used. Group 1: 3% NaOCl, Group 2: 2% CHX, Group 3: chitosan nanoparticles, and Group 4: saline as control. Discs were added with the different irrigants and placed in a dish containing C. albicans. The plates were incubated at 37°C for 24h. The zone of inhibition was measured in millimeter.

Results: Statistical analysis was performed using the test of one-way variance (ANOVA) and post hoc Tukey. Group 1 showed significantly higher zone of inhibition compared to Groups 2 and 3 (P < 0.05). There were no significant differences between the zones of inhibition of Groups 2 and 3 (P < 0.05).

Conclusion: Chitosan nanoparticles and 2% CHX have similar efficacy against C. albicans, whereas 3% NaOCl was significantly better than both chitosan nanoparticles and CHX.