PMID- 31348019
OWN - NLM
STAT- MEDLINE
DCOM- 20191029
LR  - 20191029
IS  - 1538-2982 (Electronic)
IS  - 1056-6163 (Linking)
VI  - 28
IP  - 5
DP  - 2019 Oct
TI  - Thermal Testing of Titanium Implants and the Surrounding Ex-Vivo Tissue 
      Irradiated With 9.3um CO2 Laser.
PG  - 463-471
LID - 10.1097/ID.0000000000000923 [doi]
AB  - PURPOSE: To measure the temperature rise and surface damage of titanium dental 
      implants and the surrounding tissue in a pig jaw during 9.3-mum carbon dioxide 
      (CO2) laser irradiation at various durations of time. MATERIALS AND METHODS: 
      Thermal analysis tests were performed on 12 implants with the same surface. 
      Twelve implants mounted alone or in pig jaws were laser-irradiated with a 9.3-mum 
      CO2 laser using 3 different power settings. The temperature of the implant body 
      and the proximal tissues was measured with a J-Type Thermocouple after being 
      laser-irradiated with 3 different power setting for 30, 60 seconds, and 2 
      minutes. Scanning electron microscope (SEM) and digital microscope images were 
      also taken of the all the implants before and after laser irradiation to detect 
      the presence or absence of surface damage. RESULTS: Temperature analysis showed 
      that in all cases the implant and the proximal tissue temperatures remained 
      around the start temperatures of the implant and tissues with fluctuations of 
      +/-3 degrees C but never reached the upper threshold of 44 degrees C, the temperature at which 
      thermal injury to bone has been reported. Digital and SEM images that were taken 
      of the implants showed an absence of surface damage at the cutting speed of 20% 
      (0.7 W); however, cutting speeds of 30% to 100% (1.0-4.2 W) did yield surface 
      damage. CONCLUSIONS: Laser irradiation of titanium implant surfaces using a 
      9.3-mum carbon dioxide laser with an average power of 0.7 W showed no increase in 
      thermal temperature of the implant body and tissue temperatures as well as no 
      evidence of implant surface damage.
FAU - Froum, Scott H
AU  - Froum SH
AD  - Assistant Professor, Department of Periodontics, Stony Brook Dental School, Stony 
      Brook, NY.
FAU - Cantor-Balan, Roni
AU  - Cantor-Balan R
AD  - Senior R&D Engineer, Convergent Dental, Needham, MA.
FAU - Kerbage, Charles
AU  - Kerbage C
AD  - Vice President of Research and Development, Convergent Dental, Needham, MA.
FAU - Froum, Stuart J
AU  - Froum SJ
AD  - Clinical Adjunct Professor and Director of Clinical Research, Ashman Department 
      of Periodontology and Implant Dentistry, New York University College of 
      Dentistry, New York, NY.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Implant Dent
JT  - Implant dentistry
JID - 9206481
RN  - 0 (Dental Implants)
RN  - 142M471B3J (Carbon Dioxide)
RN  - D1JT611TNE (Titanium)
MH  - Animals
MH  - Carbon Dioxide
MH  - *Dental Implants
MH  - *Lasers, Gas
MH  - Microscopy, Electron, Scanning
MH  - Surface Properties
MH  - Swine
MH  - Temperature
MH  - Titanium
EDAT- 2019/07/28 06:00
MHDA- 2019/10/30 06:00
CRDT- 2019/07/27 06:00
PHST- 2019/07/28 06:00 [pubmed]
PHST- 2019/10/30 06:00 [medline]
PHST- 2019/07/27 06:00 [entrez]
AID - 10.1097/ID.0000000000000923 [doi]
PST - ppublish
SO  - Implant Dent. 2019 Oct;28(5):463-471. doi: 10.1097/ID.0000000000000923.