What are some indications for replacing old amalgam fillings?
This question was submitted by a general dentist: What are some indications for replacing old amalgam fillings?
Dr. Anuradha Prakki, Restorative Dentistry Assistant Professor, in the Faculty of Dentistry at the University of Toronto, has provided this quick initial response
Drafted by Alexandra Rabalski, JCDA Oasis Summer Intern
Oftentimes, patients do consider changing their old amalgam fillings to the latest white composites. It is important to note that although an amalgam filling may be “old,” it does not necessarily indicate a need for replacement. As a restorative material amalgam has some properties that improve over time. For example, the corrosion products of the amalgam components seal the gap at the amalgam/tooth interface and are also antibacterial.
However, the following are indications for replacing an amalgam filling (Hickel et al., 2013):
- Recurrent (secondary) caries
- Restoration or tooth fracture
- Gingival overhang
- Inadequate proximal contacts
- Pulpal symptoms
- Excessive wear
- Aesthetic Undesirability
Reference
Hickel R, Brüshaver K, Ilie N. Repair of restorations – criteria for decision making and clinical recommendations. Dent Mater. 2013;29(1):28-50.