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Enamel and dentine of deciduous teeth Er:YAG laser prepared. A SEM study

Type:  Articles

Pubblication date:  /2/2009

Authors:  R. Kornblit*-**, M. Bossù*, D. Mari*, J.P. Rocca**, A. Polimeni*

Language:  English

Institution:  *Department of Paediatric Dentistry, University Sapienza of Rome Italy **Laser Technology and Oral Environment Laboratory, Nice, Sophia Antipolis University, ufr Odontologie. France

Publication:  European Journal of Paediatric Dentistry

Publisher:  Ariesdue Srl

Keywords:  Er:YAG laser, Deciduous teeth, SEM.

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Title:  Enamel and dentine of deciduous teeth Er:YAG laser prepared. A SEM study

Abstract:  Aim The aim of this study was to observe dentine and enamel surfaces of deciduous teeth under SEM after cavity preparation with Er:YAG laser using different fluences. The results showed that when using Er:YAG laser for cavity preparation in deciduous teeth, no carbonisation or cracks were observed on the enamel and dentine surfaces using energy output between 150-250Mj, and frequency 15Hz. The SEM images of the dentine and enamel surfaces were similar to previous studies on permanent teeth: enamel with a typical “lava flow” appearance as a result of an open core of the prism that has lost its typical hexagonal aspect and the dentine with opened tubules plus a difference in the mineral thickness between peritubular and intertubular. Conclusion The difference between the SEM images of deciduous enamel and dentine when using three different energies (150-200-250 mJ) is not significant in order to recommend the use of one type of output energy. In addition, the SEM images are similar TO those of permanent teeth.

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