In Vitro Evaluation of the Abrasiveness of Novel Bioactive Glass Powders (Biominf®) on Ivory Dentine in Air Polishing Procedures Compared to Selected Reference Powders

Abstract

Different powders are being used for periodontal treatment including; sodium bicarbonate, glycine, erythritol, and recently, bioactive glasses powders. Glycine has shown to be less invasive to root cementum and dentine than sodium bicarbonate while providing an equally effective biofilm removal [8,9]. The application of glycine powder resulted in less patient discomfort compared to hand instrumentation [10]. It was concluded that glycine powder may be safely applied to root surfaces and gingiva [11]. Erythritol was shown to be safe when used for subgingival application and achieved similar clinical outcomes in periodontal pocket reduction compared to ultrasonic debridement [6].Bioactive glasses have been introduced for air-polishing applications. The main benefit is the ability of these powders to react with oral fluid leading to the formation of apatite to occlude dentinal tubules. The occlusion of these powders could reduce dentinal hypersensitivity and improve patient comfort during periodontal treatment. The application of bioactive glasses in the air-polishing

Air-Polishing Powders’ Effect on the Color of CAD/CAM Restorative Materials

“…Cobb CM et al also reported that glycine is the most efficient in removing biofilm from natural teeth and restorative materials, and it causes the least surface damage compared with the other powders [15]. Another study revealed that glycine and erythritol have a similar surface-damaging potential [22]. However, despite its small particle size, as seen in the SEM image (Figure 2), and its low density and hardness, though statistically insignificant, erythritol caused a sufficient color change to exceed the perceptibility threshold of all restorative materials except LU.…”

“…During these recall appointments, apart from conventional techniques like using ultrasonic scalers and curette, air-polishing can be applied to remove bacterial plaque and stains [16,19]. Air-polishing provides a safer, faster, more compatible, and non-heat-producing option for patients [16,[20][21][22]. Air-polishing devices work with air pressure, water, and abrasive powders [14].…”