Irrigating solution and pressure effects on tooth sectioning with surgical burs.
OBJECTIVE
The purpose of this study was to determine the influence of the applied load on the handpiece, type of cooling agent, and type of tooth on surgical tooth dissection with a tapered crosscut fissure bur.


METHODS
Cutting studies were performed at handpiece loadings of 295 and 590 g through use of an oral surgery straight handpiece, tapered crosscut fissure burs, and an established cutting regimen. Extracted molars were dissected under irrigation with water, 0.9% saline solution, and lactated Ringer's solution at constant flow rates of 15 and 25 mL/min. Cutting efficiencies were analyzed by 1-way analysis of variance and Scheffé tests.


RESULTS
No difference in cutting efficiency was found at low loads under irrigation with water or saline solution, but under irrigation with lactated Ringer's solution, a higher cutting efficiency was found (P < .05). There was no difference in cutting efficiency for lactated Ringer's solution and saline solution at high loads, but both cut more efficiently than water (P < .01).


CONCLUSIONS
Saline solution is a useful coolant/irrigant for the dissection of teeth under most conditions, but lactated Ringer's solution might be beneficial with respect to cutting efficiency when lower handpiece loads are required.
Siegel
S C
SC
Department of Restorative Dentistry, Dental School, University of Maryland, Baltimore 21201, USA.
von Fraunhofer
J A
JA
D000704:Analysis of Variance; D003754:Dental High-Speed Equipment; D003799:Dental Stress Analysis; D004210:Dissection / Q000295:instrumentation*; D006801:Humans; D007552:Isotonic Solutions; D008963:Molar / Q000601:surgery*; D000077331:Ringer's Solution; D012965:Sodium Chloride; D007507:Therapeutic Irrigation; D014867:Water
D007552:Isotonic Solutions; D014867:Water; D012965:Sodium Chloride; D000077331:Ringer's Solution