Comparison of Marginal Microleakage of Flowable Composite Restorations in Primary Molars Prepared by High-speed Carbide Bur, Er:YAG Laser, and Air Abrasion

Authors: Borsatto, Maria Cristina; Corona, Silmara Aparecida Milori; Chinelatti, Michelle Alexandra; Ramos, Renata Pereira; Rocha, Renata Andréa Salvitti de Sá; Pecora, Jesus Djalma; Palma-Dibb, Regina Guenka

Source: Journal of Dentistry for Children, Volume 73, Number 2, May-August 2006 , pp. 122-126(5)

Publisher: American Academy of Pediatric Dentistry

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Abstract:

Purpose: The purpose of this study was to assess in vitro the influence of 3 cavity preparation devices (carbide bur, Er:YAG laser, and air abrasion) on the microleakage of flowable composite restorations in primary teeth.

Methods: Fifteen primary second molars were selected, and Class V cavities were prepared on the buccal/lingual surfaces, being assigned to 3 groups (n=10). Group 1 (control) was prepared using a high-speed handpiece and was acid etched. Group 2 was prepared and treated with a Er:YAG laser (400mJ/4Hz and 80mJ/4Hz, respectively) and was acid etched. Group 3 was prepared and treated with an air abrasion system and was acid etched. Cavities were restored and stored for 7 days. Restorations were polished, thermocycled, immersed in 0.2% rhodamine B, sectioned, and analyzed for leakage.

Results: Er:YAG laser-prepared cavities showed the highest degree of infiltration. The performance of the air abrasion device was comparable to that of the high-speed handpiece.

Conclusion: It may be concluded that the method of cavity preparation affected the microleakage of Class V cavities restored with flowable composite in primary teeth.

Keywords: MICROLEAKAGE; COMPOSITE; PRIMARY TEETH; CARBIDE BUR; ER:YAG LASER; AIR ABRASION

Document Type: Research article

Publication date: 2006-05-01

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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.
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Comparison of Marginal Microleakage of Flowable Composite Restorations in Primary Molars Prepared by High-speed Carbide Bur, Er:YAG Laser, and Air Abrasion

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