Temperature distribution in dental tissue after interaction with femtosecond laser pulses.
Algebraic and numerical solutions are presented of the temperature rise in dental tissue due to interaction with ultrashort optical radiation. Results of the studies with femtosecond laser pulses show agreement between theory and experiment. A temperature rise of typically 5 K is found for a 40 millisecond train of 7 nJ, 70 fs laser pulses at a repetition rate of 80 MHz. The peak irradiance in our experimental studies was limited to 3x10(6) W/cm(2). Applications include photoacoustic imaging and tomography of dental tissue.
The University of Tennessee, The University of Tennessee Space Institute, Center for Laser Applications, 411 B.H. Goethert Parkway, Tullahoma, Tennessee 37388, USA.
Pavlina
P
Pike
Christian
C
Parigger
Robert
R
Splinter
Peter
P
Lockhart
D000818:Animals; D001831:Body Temperature / Q000528:radiation effects*; D003776:Dental Porcelain / Q000528:radiation effects; D004735:Energy Transfer; D006801:Humans; D006979:Hyperthermia, Induced; D007259:Infrared Rays; D007834:Lasers / Q000009:adverse effects; D014070:Tooth / Q000528:radiation effects*
D003776:Dental Porcelain