[Experimental research on the preparation of dentin-pulp tissue of teeth exposed to CO2 laser beams in dogs and macaques (Macaca mulatta and Macaca fascicularis].
Traumatic inflammation due to application of CO2 laser radiation (lambda = 10.6 microns) on the dentin and on pulp of 342 teeth of 8 dogs (Beagle) and of 6 monkeys (Macaca sp. mulatta et fascicularis) stimulate in dentino-pulpal tissue morphological phenomenon, studied after 5 days, 1 and 3 months by microscopy and microradiography. The dentin exposed to a density of energy of: 2 X 10(3) J/cm2 shows a burn, a rarefaction and a cellular degeneration, followed by a neoformation of calcified dentin, of about 300 microns thick in 3 months, due to the excitation of odontoblasts or produced by pulpal cells functioning before. A density of energy of 10(3) J/cm2 order applied to the pulp beads to its partial necrosis, to various inflammatory aspects (vascular, cellular, tissular) and to a quasi-constant regeneration of by a neo-dentin bridge of 200 micron at 1 month. This method seems able to allow the analysis of cell activity (start, activation, blocking).
D000818:Animals; D002245:Carbon Dioxide; D003782:Dental Pulp / Q000473:pathology / Q000528:radiation effects*; D003804:Dentin / Q000473:pathology / Q000528:radiation effects*; D004285:Dogs; D007249:Inflammation; D007834:Lasers; D008252:Macaca fascicularis; D008253:Macaca mulatta; D009804:Odontoblasts / Q000166:cytology / Q000528:radiation effects; D012038:Regeneration; D013045:Species Specificity; D014070:Tooth / Q000528:radiation effects*
D002245:Carbon Dioxide
Recherches expérimentales sur la réparation du tissu dentino-pulpaire des dents exposées au rayonnement du laser à CO2 chez le chien et le macaque (Macacus mulatta et Macacus fascicularis).