Study the penetration of IR laser radiation in human teeth: determination of the absorbed and scattered parts

Effective application of suitable single pulse of Nd:doped lasers for cleaning of initial carious lesions of human teeth. Experimental study

“…The work shows that the discussed Nd 3+ -doped lasers are suitable for effective cleaning with a single laser pulse of initial carious lesions (i.e., ~1 to 3 mm in diameter), also in combination with preparation for final treatment procedures. The subject under consideration is divided by us into two parts in two separated articles -the one reported here is the first part and is mainly related to the results of the experimental studies of the noted problems, and the next -the second part [5] deals with the analytical description and analysis. As discussed in the following sections, such treatment with a microsecond light pulse natural to Nd 3+ -doped lasers and with 1 to 4.5 J (energy density ~60-120 J/cm 2 ) allows good cleaning also with preparation of the lesions for the final treatment procedure, without problematic heating of the tooth chamber and enamel cracking.…”