Advances in diagnosis of oral potentially malignant disorders: A review

Advances in detection methods that can be used for the early diagnosis of oral potentially malignant disorders to make oral cancer curable and increase the patient's survival include the following recent advances which are non-invasive, such as autofluorescence spectroscopy, photodynamic therapy, and Raman spectroscopy. Raman spectroscopy has the advantage in in vivo condition due to the use of optical fibers for guiding the laser light to the desired site and also it helps in the in vivo measurements by collecting these Raman photons.