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Temperature increases during surface decontamination of titanium implants using CO 2 laser
Author(s) -
Mouhyi Jaafar,
Sennerby Lars,
Nammour Samir,
Guillaume Patrick,
Van Reck Jack
Publication year - 1999
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.1999.100107.x
Subject(s) - materials science , laser , implant , titanium , thermocouple , distilled water , irradiation , biomedical engineering , dentistry , composite material , optics , chemistry , surgery , metallurgy , medicine , physics , chromatography , nuclear physics
The purpose of the present in vitro investigation was to measure temperature changes at the implant surface when using pulsed CO 2 laser in a simulated implant surface decontamination protocol. Six threaded titanium implants were placed in a fresh resected pig mandible. A 4x4 mm defect was created buccally to each implant in order to expose the implant head and approximately 5 threads. Temperature changes were monitored by two thermocouples placed near the dehiscence and at the apical part of the implant. Several setting combinations of the CO 2 laser with regard to output power, pulse width, pulse repetition rate and irradiation time were tested on dry and wet (distilled water) surfaces. Only minor temperature increases were measured when lasing wet titanium surfaces, while the temperature at dry surfaces exceeded the proposed thresholds for bone damage at clinically relevant settings. It is concluded that the CO 2 laser when used on a wet implant surface in a pulsed mode at 8 W/l0 ms/ 20 hz during 5 s induces a temperature increase of less than 3 o C. This would minimize the risk of temperature induced tissue damage as a result of lasing implant surfaces.