Vol 21 No. 1
Vol 21 No. 1
Vol 21 No. 1
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
J Bagh College Dentistry <strong>Vol</strong>. <strong>21</strong>(1), 2009 The effectiveness of carbide ….<br />
turbine resulted in slight reduction in the cutting<br />
performance of carbide fissure bur since the<br />
peripheral speed of the bur will reduced at the<br />
lower speed thus reduce the cutting effectiveness<br />
of the blades, however such a reduction was non<br />
significant.<br />
Group III: The heavy work load (=175) markedly<br />
drop the rotational speed to a lower speed range<br />
(from high moderate speed) as measured by<br />
Siegel et al 2000 (13), Therefore the cutting<br />
effectiveness of carbide fissure bur markedly<br />
reduced and a significant difference began to<br />
appear.<br />
REFERENCES<br />
1. Sturdevant CM, Roberson TM, Heymann HO.<br />
Sturdevent JR, the art and science of operative<br />
dentistry, 3 rd ed. St. Louis: Mosby 1995.<br />
2. Morrant GA. Burs and rotary instruments:<br />
introduction of a new standard numbering system,<br />
Brit Dent J 1979; 147 (4):97-8.<br />
3. Nelson RJ, Pelander CE, Kumpula JW. Hydraulic<br />
turbine contra angle hand piece, J Dent Assoc 1953;<br />
47:329.<br />
4. Taylor DF, Perkius RR, Kumpula JW.<br />
Characteristics of some air turbine hand pieces. J Am<br />
Dent Assoc 1962; 64:794-805.<br />
5. Peyton FA. Temperature rise in teeth developed by<br />
rotating instrument. J Am Dent Assoc 1955; 50: 629-<br />
30.<br />
6. Eames WB, Nale JL. A comparison of cutting<br />
efficiency of air -driven fissure burs. J Am Dent<br />
Assoc 1973; 86:412-5.<br />
7. Von- Frauhofer JA, Siegel SC. Enhanced dental<br />
cutting through chemomechanical effects. J Am Dent<br />
Assoc 2000; Oct; 131 (10) : 1465-9.<br />
8. Von-Fraunhofer JA, Siegel SC. Hand piece coolant<br />
flow rates and dental cutting. Oper Dent 2000; <strong>No</strong>v-<br />
Dec;25(5)544-8.<br />
9. Peyton FA. Effectiveness of water coolant with rotary<br />
cutting instrument. J Am Dent Assoc 1985; 56: 664-<br />
75.<br />
10. Sockwell CL. Dental hand pieces and rotary cutting<br />
instrument, Dent Clin <strong>No</strong>rth Am 1971; 15(1): <strong>21</strong>9-44.<br />
11. Lambert RL,Lambert RF. Variation in the design of<br />
3 330 dental burs. Oper Dent 1989;14: 73-6.<br />
12. Henry EE, Peyton FA. The relationship between<br />
design and cutting efficiency of dental burs. J Dent<br />
Res 1954; 33:281-2.<br />
13. Siegel SC. Cutting efficiency of three diamond bur<br />
grit sizes. J Am Dent Assoc 2000; 131:12.<br />
14. Craig RG, Marcus L. Restorative Dental Materials,<br />
10 th ed. St. Louis. Mosby 1997. Ch4: 56-103.<br />
Restorative Dentistry 17
Change language