• Laser treatment is becoming widely recognised and can be applied to prevent caries from developing and to reduce the progression of caries.
  • The mechanism of laser should be understood before a dentist could apply in his daily practice.
  • The Enamel surface of tooth is made of crystals called ‘Hydroxyapetite’ and it is permeable in nature therefore allowing diffusion of ions.
  • During laser treatment, moderate heat(CO2 laser produces temp > 1000 degree celcius) is produced which changes the composition of Enamel from ‘hydroxyapetite’ to ‘carbonated apetite’ in which there is loss of water in the crystals, as a result the pores of Enamel shrink down to form ‘Microspace system’. The Microspace system provides a means for trapping Calcium, phosphate and fluoride ions which release during demineralization and acts as site for re-precipitation.
  • The trapped minerals phases inside the Enamel and impedes lesion formation and progression causing enhanced resistance against demineralization.
  • As the microspaces are smaller in size, it decreases the permeability of the Enamel thereby reducing the diffusion of ions in and out thereby reducing the demineralization process. Thus a seal is achieved and so is resistance to caries.
  • The Dentin also gets acid resistance as there is increased mineral content due to burning of organic matter from tissue so there is increased Calcium and Phosphate found in recrystallized Dentin.

If you want to consider being mentored by Dr Rajat Sachdeva contact him directly on 01142464041 for an informal chat.