iDentistry The Journal identistry_may_aug2019 | Página 11

The Journal
When it is necessary to perform an osteotomy
starting from the cortex the strength necessary
to make use of the “torque” or the rotation in the
more mineralized bone structure, suddenly
becomes excessive when passing to the
spongiosum or when the cortical bone is
finished. This causes an immediate loss of
control of the surgical instrument, which may be
very dangerous in close oximity to delicate
anatomical structures, such as vessels and
nerves.
The traditional motorized instruments in
producing the cutting action, generate
macrovibrations, which in turn reduces the
surgical safety. Piezoelectric drill’s cutting
action linear microvibrations of an ultrasound
nature with a range of only 20-60 ηm in a
longitudinal direction.9-14 One of the main
disadvantages reported, so far regarding the
piezoelectric drill is increase in the operating
time, compared with that with traditional cutting
instruments.
Conclusion
Piezoelectric surgery is a new instrument used
for osteotomy and osteoplastic repair in surgery
of head and neck. Piezosurgery involves a
different learning curve as compared to other
techniques which requires the obstacles of a
psychological nature to be overcome and
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concerned surgical expertise.
Ultrasound cutting method will be increasingly
used in dental implants, neurosurgery,
paediatric surgery, orthopedics, ENT surgery
particularly with improvements in power and
geometry of the inserts in which a selective
action upon the mineralized tissues is of
fundamental importance.
2. McNutt MD, Chou CH. Current trends in
immediate osseous dental implant case
selection. J Dent Educ. 2003;67:850-859.
3. Horton JE, Tarpley TM Jr, Jacoway JR.
Clinical applications of a ultrasonic
instrumentation in the surgical removal of bone.
Oral Surg Oral Med Oral Pathol 1981;51:236-
42.
4. Horton JE, Tarpley TM Jr, Wood LD. The
healing of surgical defects in the alveolar bone
produced with ultrasonic instrumentation,
chisel and rotary bur. Oral Surg Oral Med Oral
Pathol 1975;39:536-46.
5. Torella F, Pitarch J, Cabanes G, Anitua E.
Ultrasonic osteotomy for the surgical approach
of the maxillary sinus. Int J Oral Maxillofac
Implants 1998;13:697-700.
6. Vercellotti T. Piezoelectric surgery in
implantology– a new piezoelectric ridge
expansion technique. Int J Periodontics
Restorative Dent 2000;4:359-65.
7. Sherman JA, Davies HT. Ultracision: armonic
scalpel and its possible uses in maxillofacial
surgery. Br J Oral Maxillofac Surg 2000;38:530-
2.
8. Vercellotti T, De Paoli S, Nevins M. The
iezoelectric bony window osteotomy and sinus
membrane elevation: A introduction of new
technique for simplification of the sinus
augmentation procedure. Int J Periodontics
Restorative Dent 2001;21:561-7.
References
1. Aro H, Kallioniemi H, Aho AJ, Kellokumpu-
Lehtinen P. Ultrasonic device in bone cutting. A
histological and SEM study. Acta Orthop Scand
1981;52:5-10.
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Vol. 15
No. 2
May-Aug 2019