Simplifying differential diagnoses of orofacial conditions - a guide to surgical sieves and red flags.

Formulation of a differential diagnosis with appropriate diagnostic tests is critical in day-to-day clinical practice. Many specialists or hospital-based practitioners in specialties such as oral medicine and oral surgery will be familiar with the use of surgical sieves and the term 'red flags' in their practice. However, it is the authors' experience that general dental practitioners may not be as familiar with such tools. Primary care practitioners are often the first port of call for patients with uncommon symptoms; therefore, it is essential that appropriate and timely referrals are made. The use of a surgical sieve and heightened awareness of red flags will assist practitioners significantly.