[An experimental verification of the thermal changes in the bone tissue during drilling for cavity preparation for an endosseous implant].
The local temperature increase of the bone following drilling procedures has been evaluated. Without any cooling device, and using a standard-speed drill, in few seconds the temperature reaches the necrosis-limit for living tissues (55 Celsius degrees). We compared the effectiveness of the most common cooling methods involving a forced flow of saline reaching the bone through an axial canal in the drill or just applied to the external surfaces of drill and bone with that of a device allowing a 100/1 reduction of the drill speed. With this method cooling was no more necessary and temperature control was quite good, as with cooling methods. We think the speed-reducing device can be recommended as safer, simpler to use and more comfortable for the patient.
Fagnoni
V
V
Clinica Odontostomatologica, Università di Torino.
Fontolan
D
D
Polastri
F
F
Zucca
M
M
D000818:Animals; D001831:Body Temperature; D001842:Bone and Bones / Q000502:physiology* / Q000601:surgery; D002417:Cattle; D003080:Cold Temperature; D003754:Dental High-Speed Equipment; D003758:Dental Implantation, Endosseous / Q000295:instrumentation / Q000379:methods*; D066298:In Vitro Techniques
Verifica sperimentale delle variazioni termiche del tessuto osseo durante la fresatura per la preparazione di cavità per impianto endosseo.