When polishing an amalgam restoration, which tool or method is prohibited for hygienists?

When polishing an amalgam restoration, the prohibition of using flame burs by dental hygienists is grounded in the potential for damaging the restoration and the surrounding tooth structure. Flame burs are typically designed for cutting and can generate excessive heat and pressure, which may compromise the integrity of the amalgam. Furthermore, using such a tool can lead to significant removal of material from the restoration, possibly leading to harm to the overall dental health of the patient.

In contrast, dental handpieces, rubber cups, and sandpaper disks are accepted tools for hygienists as they can provide effective polishing without the aggressive cutting action that flame burs offer. Hygienists are trained to utilize these safer methods to achieve a polished finish while maintaining the longevity and function of the amalgam restoration and surrounding enamel. This understanding reinforces the importance of using appropriate tools in dental hygiene practice to uphold patient care and safety.