Subject(s)
Lasers , Tooth/physiology , Chemical Phenomena , Chemistry, Physical , Humans , Mouth/physiology , Mouth/radiation effects , Temperature , Thermodynamics , Tooth/radiation effectsABSTRACT
Results obtained from two clinical cases, representative of 1,140 human teeth treated by CO2 laser beam during 3 years, announce a new conception of treatment of dental caries. The beam (P = 4 - 5 W, energy density of 9 to 25 kw/cm2) causes a dentin healing which becomes sterile, chemically and physically more resistant than pathological dentin. In addition, this exposure leads to an activation of the dentinogenesis supported by X-ray, confirming histo-pathological results obtained from experiments performed on animals.
Subject(s)
Dental Caries/radiotherapy , Laser Therapy , Adolescent , Carbon Dioxide , Dental Pulp Diseases/radiotherapy , Dentinogenesis/radiation effects , Female , Humans , MaleABSTRACT
By a laser beam, enamel and dentin are changed into an identical crystalline structure observed in reflected light and described as recrystallisation after fusion. The Vickers pyramidal numbers of these areas are the same as the mature enamel surface (590 VPN). The theoretical calculation proved that after irradiation in enamel there is an elevation of temperature about 2,5 degrees C through 3 mm. These observations suggest that new operative techniques might be possible.
