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Preparation time and sealing effect of cavities prepared by an ultrasonic device and a high-speed diamond rotary cutting system
- Source :
- Journal of Oral Science. 49:207-211
- Publication Year :
- 2007
- Publisher :
- Nihon University School of Dentistry, 2007.
-
Abstract
- The purpose of this study was to compare a high-speed handpiece to an ultrasonic device regarding the time taken for cavity preparation in bovine incisor teeth (n = 12), and to evaluate microleakage after the restorations. Two cylindrical cavities each were prepared on the labial surfaces of 12 teeth. One of them was made with a diamond tip in group 1 (G(1) = 12) coupled with a high-speed handpiece, and the other with a chemical vapor deposition (CVD) tip in group 2 (G(2) = 12) coupled with an ultra-sound device (n = 24). The time taken for each preparation was measured with a stopwatch. The cavities were treated with adhesive (Scotchbond Multipurpose, 3M), restored with composite (Filtek Z250, 3M), finished and polished, and then the prepared teeth were immersed in a 50% silver nitrate solution. The samples were cut in the mesio-distal direction and evaluated for microleakage. Data were analyzed using the Wilcoxon test (P < 0.01). The results revealed that the time taken to prepare cavities was 7.9 times shorter in G(1). There was no microleakage in 100% of the samples indicated by the absence of dye penetration in G(1), and 46% in G(2). It was concluded that the performance of the high-speed handpiece was better than that of the oscillatory system, in terms of both the time taken for preparation and the microleakage.
- Subjects :
- Time Factors
Materials science
medicine.medical_treatment
Composite number
Dentistry
Ultrasonic device
Chemical vapor deposition
engineering.material
Composite Resins
Dental High-Speed Equipment
chemistry.chemical_compound
Incisor
medicine
Animals
Ultrasonics
Composite material
Dental Restoration, Permanent
General Dentistry
Dental Leakage
business.industry
Diamond
Resin Cements
Silver nitrate
medicine.anatomical_structure
chemistry
engineering
Cattle
Adhesive
Dental Cavity Preparation
business
Dental restoration
Subjects
Details
- ISSN :
- 18804926 and 13434934
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Journal of Oral Science
- Accession number :
- edsair.doi.dedup.....6368045221e0e37e6fab9359d37ccc4b