Authors: T. Dostálová 1; H. Jelínková 2; H. Kučerová 1; O. Krejsa 1; K. Hamal 2; J. Kubelka 3; S. Procházka 3 Authors‘ workplace: Výzkumný ústav stomatologický, Praha, ředitel doc. MUDr. O. Krejsa, CSc. 2ČVUT, Fakulta jaderná a fyzikálně inženýrská, Praha, děkan prof. ing. L. Musílek, CSc. 3Preciosa – Crytur, Turnov, ředitel ing. R. Matyáš 1 Published in: Česká stomatologie / Praktické zubní lékařství, ročník , 1999, 5, s. 177-187 Category:
Aim of this study was to evaluate the quality of laser ablation in comparison withthe classical drilling system. For the experiment the Er:YAG laser drilling machine was used.The system had a laser head, water cooler, and power supply with automatic control. Shape ofcavity in comparison with classical drill, time of preparation and influence of cavity shape onfilling materials retention were criteria for evaluation of non-contact Er:YAG ablation. Theshape of cavity was irregular, the surface had a microretentive appearance. It was possible toremove enamel, dentin and the old adequate fillings, except for amalgam or metal alloys. Cavosurface margin discoloration ranging from 82 to 86 % could be a problem. From 4 to 8 % wereobserved changes of the color and anatomic form of the tooth. In comparison with classicaltreatment it could be said that the retention and quality of filling materials is the same orsimilar.
Key words: dentistry – laser preparation – Er:YAG laser – enamel – dentin
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