A group of researchers are developing a sensory array to detect 11 different types of bacteria in saliva and plaque. The sensors employ nanoscopic particles that mimic natural enzymes (called nanozymes) made from iron oxide particles coated in DNA strands. When used to test a sample, bacteria adhere to the DNA, which decreased the nanozyme’s reactivity, resulting in different coloured test strips in the sensor array. The testing process can be completed in 20 minutes. “Dental caries are mainly caused by cariogenic bacteria like S. mutans,” says Ling Zhang, lead author on the article. “The bacteria might be different in a healthy person versus a person with cavities. The sensor array has the potential to quickly discriminate between these two kinds of samples, which could have applications in the dental office.” The researchers also found that the sensor array has antibacterial effects on three bacteria species. Electronic microscopic images suggest that the nanozymes destroy bacterial membranes. Detecting Oral Bacteria See: bit.ly/3IXortV 17 Issue 2 | 2024 | Full product catalog at pulpdent.com The ACTIVA restorative advantage: Secondary caries defense* · Superior handling · Easy dispensing · Esthetic · Durable Moisture friendly · Dual-cure · Everyday versatility · Loved by patients and doctors alike Celebrating Over 10 Years of Clinical Success Activa is the hero of my practice. —Dr. Brittany Bergeron, General and cosmetic dentist ACTIVA™ user since 2019 *ACTIVA™ BioACTIVE physically seals the margin of the material and tooth interface through apatite crystal formation, subsequently protecting against microleakage, the leading cause of secondary caries and recurrent decay.
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