Assessment of Microgap and Bacterial Leakage of Two Types of Internal Implant-Abutment Union.

Objective: The current research was done to assess microbial seepage of two types of internal implant-abutment connections. Materials and Methods: Twenty dental implants are categorized into two groups. Group A fixtures with an internal hexagonal geometry and group B fixtures with a tri-lobe internal connection. All implant-abutment assemblies underwent a three-week incubation period at 37°C in sterile tubes containing 5 mL of Staphylococcus aureus broth culture. Through the use of Gram stain and biochemical processes, the resultant colonies were recognized. Results: The mean Log10 colony forming unit (CFU) in group A was 8.4 and in group B was 7.2. The variation between both groups was found to be considerable (P < 0.05). Microgap was more in group B compared to group A. Conclusion: Bacteria may infiltrate the small area between the implant and the abutment. Compared to dental implant fixtures with a tri-lobe internal connection, there was a noticeably higher Log10 CFU in dental implant fixtures with an internal hexagonal geometry.

Comparative Evaluation of Efficacy of Bioactive Glass, Tricalcium Phosphate, and Ozone Remineralizing Agents on Artificial Carious Lesion.

Objectives: Evaluation of efficacy of bioactive glass (BAG), tricalcium phosphate, and ozone remineralizing agents on artificial carious lesion. Materials and Methods: Freshly extracted 48 human premolar teeth were included for this in vitro study. Remineralization of demineralized teeth was done with respective remineralizing agents (Group A - calcium sodium phosphosilicate [BAG], Group B - tricalcium phosphate [Clinpro Tooth Crème], Group C - ozone remineralizing agents, and control group: Group D - deionized water) three times a day for 12 days for 4 min. The degree of demineralization and remineralization was evaluated with Vickers hardness number. Results: There was a decrease in microhardness from baseline to demineralization in all the groups. The difference in microhardness values from demineralization to remineralization in all the three test groups was found to be statistically highly significant. Conclusion: BAG and Tricalcium phosphate had higher remineralizing capacity, which can be used clinically to treat early carious lesions.