Bisco Dental Products has released two new etchants designed for use in etching tooth structure prior to bonding. Uni-Etch and Etch-37 are offered with the antimicrobial agent benzalkonium chloride in a 30-mL bulk syringe system, the company said. The two new products are 32% and 37% semigel phosphoric acid etchants, respectively. Uni-Etch and Etch-37 will allow practitioners to etch enamel and dentin prior to bonding, and they are specifically formulated
BOSTON – In a March 13 oral session at the International Association for Dental Research (IADR) 2015 General Session, researchers discussed how 3D models of condyles built from MRI scans yielded similar volume and shape as models built from conebeam CT (CBCT) scans. Researchers from the departments of orthodontics at the University of North Carolina and the University of Michigan obtained a total of 10 condyles using both CBCT and
BOSTON – In a poster presented at the International Association for Dental Research (IADR) 2015 General Session, a group from Italy showed how a new computer-controlled local anesthesia delivery system resulted in low patient pain ratings during injection procedures. In addition, patients were willing to pay an additional fee for painless anesthesia, the researchers found. Dino Re and colleagues in the department of oral rehabilitation at the University of Milan
BOSTON – How is the periodontal health of potentially at-risk patients who visit outpatient clinics in Hong Kong? This topic was addressed in a poster presented on March 13 at the International Association for Dental Research (IADR) 2015 General Session. Researchers reported that patients presenting to outpatient clinics generally had poor oral hygiene, gingival inflammation, poor periodontal status, and relatively poor oral health-related quality of life. The group surveyed patients
Researchers in China have discovered that a material called graphene oxide is effective at eliminating cariogenic bacteria, some of which have developed antibiotic resistance, according to a study in ACS Applied Materials & Interfaces (February 23, 2015). Zisheng Tang and colleagues noted that dentists often prescribe traditional antibiotics to get rid of bacteria that cause caries or periodontal disease. But with the rise in antibiotic resistance, new approaches are needed
BOSTON – A poster presentation at the International Association for Dental Research (IADR) 2015 General Session showed how surface sealing had no noticeable effect on surface staining and discoloration of composites. The research team from the Islamic Tehran Azad University of Dentistry in Tehran, Iran, noted that color stability of tooth-colored restoration material is a noticeable issue in cosmetic dentistry. Also, discoloration of resin composites is one of the most
BOSTON – In a poster presented on Thursday at the International Association for Dental Research (IADR) 2015 General Session, researchers from the University of California, San Francisco described their work on improving bond strength in composite restorations. The researchers used riboflavin activated with ultraviolet A (UVA) light to cross-link dentinal collagen for both “sound” and caries-affected dentin when total-etch adhesives are used. This UVA-based cross-linking method may be applied to
3M Unitek has launched AlastiK lingual ligatures, specifically designed for the Incognito appliance system. Enabling faster and easier ligation, the ligatures are the latest upgrades to the Incognito system, including Incognito clear precision trays and customization for the Forsus fatigue resistant device, according to a press release. They provide ease of use, efficiency, and patient comfort during lingual treatment. Available in March, the ligatures improve ease of lingual bracket ligation
Patients with certain characteristics are more likely to experience severe pain after root canal therapy, according to a new study in the Journal of Dental Research. Practitioners may be able to use these pretreatment predictors to better recommend pain management strategies for their patients at risk for severe postoperative pain. The study evaluated a variety of factors that may influence pain after root canal therapy (RCT). The authors found four
Gingival crevicular blood collected at the dental visit can be used to screen for diabetes and monitor glycemic control for many at-risk patients, according to a new study from New York University (NYU) in the American Journal of Public Health (February 25, 2015). The study builds on an earlier work in which the feasibility and acceptability to patients and dental providers of using oral blood to screen for diabetes during
BOSTON – Periodontitis shares pathogenic mechanisms with rheumatoid arthritis (RA) and may trigger its onset. A study presented at the International Association for Dental Research (IADR) 2015 General Session found that patients with RA showed a marked inflammatory profile in all microenvironments, including oral, despite routine dental care. The patients had highly elevated matrix metalloproteinase levels in all sites, the researchers found. They also noted that correlation between dental parameters
BOSTON – A study from Mexico found a high prevalence of oral disease in people with disabilities. The researchers presented their findings in a poster at this week’s International Association for Dental Research (IADR) 2015 General Session. A group from the Autonomous University of Nuevo León in Monterrey wanted to measure the prevalence of oral diseases associated with sociodemographic risk factors, health, and nutrition among people with disabilities. They studied
