Authors: Rossi, Rively Rodrigues¹; Aranha, Ana Cecília²; Eduardo, Carlos de Paula²; Ferreira, Lisiane Soares³; Navarro, Ricardo⁴; Zezell, Denise Maria⁵

Source: Journal of Dentistry for Children, Volume 75, Number 2, May-August 2008 , pp. 151-157(7)

Publisher: American Academy of Pediatric Dentistry

Abstract:

Purpose: The purpose of this study was to evaluate microleakage of cavity preparation in primary teeth made with an Er,Cr:YSGG laser (L) or high-speed drill (HD) and conventional (CGIC) and resin-modified glass ionomer cement (RMGIC).

Methods: One hundred primary teeth were divided into 10 groups (N=10): (a) groups 1 and 2 represented cavities prepared by a no. 1012 diamond bur with HD; (b) groups 3 through 10 represented cavities prepared with an Er,Cr:YSGG laser (with a repetition rate of 20 Hz power settings varying for enamel=2.5 W and 3 W and dentine=1.0 W and 1.5 W). After cavity preparation, samples were restored with CGIC (Ketac Molar Easy Mix) and RMGIC (Vitremer), impermeabilized, thermal cycled, stained, washed, and sectioned. The degree of dye penetration was scored by 3 standardized examiners using a light stereoscope at X30 magnification.

Results: The Kruskal-Wallis test detected no statistical differences between the cavity preparation methods (P<.049). Neither of the GICs tested were able to avoid microleakage, and the RMGIC showed the lowest statistical degree of microleakage compared with CGIC for both types of cavity preparation.

Conclusions: The Er,Cr:YSGG laser provided an equivalent method of cavity preparation compared to the high-speed drill. The resin-modified glass ionomer cement showed the lowest degree of microleakage. This restorative material should be considered when choosing the cavity preparation method.

Keywords: ER; CR:YSGG LASER; CEMENT GLASS IONOMER; MICROLEAKAGE; COMPOSITE RESINS; RESTORATIONS

Document Type: Research article

Affiliations: 1: Professional Master Course of Lasers in Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil 2: Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil 3: Special Laboratory of Lasers in Dentistry (LELO), School of Dentistry, University of São Paulo, São Paulo, Brazil 4: Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil 5: Nuclear and Energy Research Institute, IPEN-CNEN, São Paulo, Brazil

Publication date: 2008-05-01

More about this publication?

• Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
• Editorial Board
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Membership Information
• Information for Advertisers
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Dentistry ,  Pediatrics
• By this author: Rossi, Rively Rodrigues ;  Aranha, Ana Cecília ;  Eduardo, Carlos de Paula ;  Ferreira, Lisiane Soares ;  Navarro, Ricardo ;  Zezell, Denise Maria

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers