| ORIGINAL ARTICLE |
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| Year : 2011 | Volume
: 14
| Issue : 2 | Page : 132-135 |
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The influence of grain size coating and shaft angulation of different diamond tips on dental cutting
Lourdes Santos-Pinto1, Carolina Carvalho Bortoletto1, Ana Carolina Mascarenhas Oliveira2, Ary Santos-Pinto3, Angela Cristina Cilense Zuanon1, Luciana Monti Lima1
1 Department of Pediatric Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
2 Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
3 Department of Orthodontics, Araraquara Dental School, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
Correspondence Address:
Lourdes Santos-Pinto
School of Dentistry of Araraquara - FOAr/UNESP, Department of Pediatric Dentistry, Rua Humaitá, 1680 - CEP: 14803-901 - Araraquara, SP
Brazil
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0972-0707.82611
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Objectives : To evaluate the influence of the grain size coating and shaft angulation of ultrasonic and high-speed diamond burs on the dental cutting effectiveness.
Materials and Methods : For the grain size evaluation, cavities were prepared on 40 incisors using high-speed (1092 and 1093F KG Sorensen® ) and ultrasonic tips (8.2142 and 6.2142-CVDentus® ). For the shaft angulation evaluation, cavities were prepared on 40 incisors using uniangulated (T1-CVDentus® ) and biangulated (T1-A CVDentus® ) ultrasonic tips. The cavities were bisected and examined at Χ50 magnification. The width and depth of cavities were measured by Leica QWin software. Kruskal-Wallis non-parametric test was used for analysis.
Results : The grain size did not affect the cutting effectiveness, but the high-speed burs promoted deeper and wider cavities than the ultrasonic tips. The shaft angulation did not affect the cutting effectiveness; both the angulated and biangulated tips had greater cutting efficiency in dentin than in enamel.
Conclusions : Ultrasonic tips promoted more conservative preparations and seemed promising for cavity preparation. |
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