title: Temperature increase during CO(2) and Er:YAG irradiation on implant surfaces.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the temperature gradient (ΔT) generated by laser irradiation of an implant surface using a carbon dioxide (CO(2)) and an Erbium:yttrium aluminium garnet (Er:YAG) laser.
  
  
  METHODS
  A dental implant was irradiated with a CO(2) and an Er:YAG lasers, with variable power settings. Temperature increase was measured in 2 locations of the implant surface: in the cervical area (ΔT(c)) and in the apical area (ΔT(a)).
  
  
  RESULTS
  The CO(2) laser showed the following results: after 60 seconds of irradiation with continuous mode, ΔT(c) was 13.9°C and ΔTa was 12.5°C. The Er:YAG laser showed the following results: after 60 seconds of irradiation with continuous mode, the temperature rise ΔT(c) was 50.6°C and ΔT(a) was 38.6°C. The CO(2) laser with continuous mode generated a temperature increase of 10°C after only 36 seconds. The Er:YAG laser with continuous mode produced a more rapid temperature increase and took only 10 seconds to reach the critical threshold.
  
  
  CONCLUSIONS
  The irradiation of implant surfaces with CO(2) and Er:YAG lasers may produce a temperature increase above the critical threshold (10°C) after 10 seconds of continuous irradiation.
authors: Division of Periodontology, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA.
authors: Alessandro
authors: A
authors: Geminiani
authors: Jack G
authors: JG
authors: Caton
authors: Georgios E
authors: GE
authors: Romanos
mesh_terms: D000388:Air; D015921:Dental Implants; D003764:Dental Materials / Q000528:radiation effects; D006358:Hot Temperature; D006801:Humans; D054020:Lasers, Gas / Q000627:therapeutic use*; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008422:Materials Testing; D011829:Radiation Dosage; D013696:Temperature; D013821:Thermometers; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D015921:Dental Implants; D003764:Dental Materials; D014867:Water