Abstract
The aim of this study was to evaluate the shape of dental cavities made with the CVDentus system using different ultrasound power levels. One standard cavity was made on the buccal aspect of 15 bovine incisors with a CVDentus cylindrical bur (82142). The sample was divided into three groups: G1-ultrasound with power II; G2-ultrasound with power III; and G3-ultrasound with power IV. A standardizing device was used to obtain standardized preparations and ultrasound was applied during one minute in each dental preparation. The cavities were sectioned in the middle, allowing observation of the cavity's profile with a magnifying glass, and width and depth measurement using the Leica Qwin program. The Kruskal-Wallis (p<0.05) and Dunn statistical analyses demonstrated differences between the dental cavity shapes when powers III and IV were used. However, the cavities that were made with power III presented dimensions similar to those of the bur used for preparation. We concluded that the power recommended by the manufacturer (III) is the most adequate for use with the CVDentus system.
Highlights
The use of ultrasound in dentistry was first introduced over fifty years ago for the preparation of cavities.[2]
The CVDentus® system is a new Brazilian technology that is innovating the procedure of dental cavity preparation
The samples were divided into three randomized groups, corresponding to each power level used with the ultrasound equipment
Summary
The use of ultrasound in dentistry was first introduced over fifty years ago for the preparation of cavities.[2] The instrument was considered efficient for cutting hard dental tissue due to its precise cut, the soft aspect of the cavities obtained and its good tolerance by patients.[8] some limitations in its use, such as a slow cut, the insufficient removal of tissue or weak materials, the need for constant maintenance and its high cost, have restricted the recommendations for its use and, it has had a low acceptance by professionals.[10] During the years, this technology has been adapted for modern Dentistry needs, introducing water irrigation and adequate drill oscillation. This process results in an instrument that presents high durability, structural stability and biocompatibility, without forming dentine residues or contaminating the tooth with metal.[1,9,11,13] Its adaptation for ultrasound adds to its advantages, providing improved visibility, low noise and often discarding the need for local anesthesia, promoting more comfort and facilitating the treatment for patients and for the operator.[3,13]
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