Effects of electromagnetic field on bone healing around commercially pure titanium surface: histologic and mechanical study in rabbits.
OBJECTIVE
The purpose of this pilot study was to evaluate the histologic and mechanical healing process in dental implants under the action of pulsed electromagnetic field (PEMF).


METHODS
Forty-eight commercially pure implant fixtures were implanted in tibiae metaphysis of 12 New Zealand white rabbits divided into experimental (PEMF) and control groups. A PEMF with pulse width of 85 microseconds and a pulse frequency of 20 Mc was applied for 30 minutes per day. The animals were killed 21 and 42 days after implantation. The mechanical tests were performed in all animals and bone biopsies were prepared for decalcified sections analysis.


RESULTS
Mechanical tests did not show significant differences between the groups (P > 0.05); however, statistically significant differences were observed over time (P < 0.0001). Similar histologic features were achieved for both groups.


CONCLUSIONS
These results suggest that PEMF stimulation does not improve the bone-healing process around commercially pure dental implants.
Buzzá
Edmur Pereira
EP
Department of Oral and Maxillofacial Surgery, Dental School of Piracicaba (UNICAMP), Piracicaba-São Paulo, Brazil.
Shibli
Jamil Awad
JA
Barbeiro
Roberto Henrique
RH
Barbosa
José Ricardo de Albergaria
JR
D000818:Animals; D001861:Bone Regeneration; D001842:Bone and Bones / Q000033:anatomy & histology; D015921:Dental Implants; D004574:Electromagnetic Fields; D005260:Female; D020007:Implants, Experimental; D011817:Rabbits; D013977:Tibia; D014025:Titanium
D015921:Dental Implants; D014025:Titanium