ER: YAG IN CONSERVATIVE DENTISTRY

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FORNAINI CARLO

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Journal Paper

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Journal: JOURNAL OF LASERS IN MEDICAL SCIENCES Year:2018 | Volume:9 | Issue:SUPPL A (9TH WORLD CONGRESS OF SOLA) Page(s): 9-9

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Title

ER: YAG IN CONSERVATIVE DENTISTRY

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FORNAINI CARLO

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Abstract

Background: The use of laser technology in conservative dentistry was proposed in 1990 by Hibst and Keller who described the possibility to employ Er: YAG laser as an alternative to conventional rotating instruments. In facts, thanks to the affinity of this wavelength (2940 nm) to water (absorption peak=3000 nm) and hydroxyapatite (absorption peak=2800 nm), Er: YAG laser allows an efficient ablation of hard dental tissues without the risk of micro- and macro-fractures, often observed with the use of conventional rotating instruments. The dentin surface treated by laser appears clean, without smear-layer and with the tubules open and clear. The aim of this clinical study was to demonstrate, by the description of different clinical cases, the possibilities and the advantages of the use of Er: YAG lasers in conservative dentistry and also to show that better results may be achieved in terms of stronger adhesion, less invasiveness, reduced pain as well as greater comfort and satisfaction of patients.Methods: The advantages of the use of Er: YAG laser in adhesive dentistry is demonstrated by the description of a great number of cases in different clinical situations, with different parameters and techniques, and with follow-up observations.Results: All the cases reported showed good functional and aesthetic results with great satisfaction from the patients. In most cases, anaesthetic injection was avoided without pain and discomfort. Thermal elevation in the pulp, recorded during Er: YAG laser irradiation, was lower than that recorded by using a turbine and micro-motor with the same conditions of air/water spray. This wavelength also produces an antimicrobial decontamination effect on the treated tissue, which destroys both aerobic and anaerobic bacteria. The most interesting aspects of this new technology may be related to the goals of modern conservative dentistry: i.e. minimally invasive treatments and adhesive dentistry. In fact, Er: YAG lasers can reach spot dimensions smaller than 1 mm, thus enabling a selective ablation of the affected dentin with preservation of the surrounding sound tissues. Moreover, several in vitro studies have demonstrated that the preparation of enamel and dentine by Er: YAG laser, followed by orthophosphoric acid-etching, enhance the effectiveness in terms of reduced micro-leakage and increased bond strength. For this reason the role of the Er: YAG laser in modern conservative dentistry is of greater and greater importance: it is able to make a very small cavity and, by realizing a rough surface, to increase the adhesion of the composite resin. If this is desirable in the whole of conservative dentistry, it becomes strictly necessary in particular clinical situations where a minimal volume of ablation and/or greater adhesion are required, i.e. pits and fissures sealing, fluorosis or enamel defects, spots and crown fractures of frontal teeth. The follow-up observation of the described cases confirmed the long-term stability of the results, both in term of functionality and aesthetics.Conclusion: Er: YAG laser was demonstrated to be a good device in conservative dentistry; it may replace the conventional rotating instruments with several advantages in terms of patient comfort, results, and longevity.

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APA: Copy

FORNAINI, CARLO. (2018). ER: YAG IN CONSERVATIVE DENTISTRY. JOURNAL OF LASERS IN MEDICAL SCIENCES, 9(SUPPL A (9TH WORLD CONGRESS OF SOLA)), 9-9. SID. https://sid.ir/paper/326076/en

Vancouver: Copy

FORNAINI CARLO. ER: YAG IN CONSERVATIVE DENTISTRY. JOURNAL OF LASERS IN MEDICAL SCIENCES[Internet]. 2018;9(SUPPL A (9TH WORLD CONGRESS OF SOLA)):9-9. Available from: https://sid.ir/paper/326076/en

IEEE: Copy

CARLO FORNAINI, “ER: YAG IN CONSERVATIVE DENTISTRY,” JOURNAL OF LASERS IN MEDICAL SCIENCES, vol. 9, no. SUPPL A (9TH WORLD CONGRESS OF SOLA), pp. 9–9, 2018, [Online]. Available: https://sid.ir/paper/326076/en

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