Comparison of the effect of laser preparation with Er, Cr: YSSG-laser at different powers and the traditional method of preparation of wedge-shaped defects on the structure of cervical dentin

Bolashova S.V.

Evdokimov Moscow State University of Medicine and Dentistry

Authors:

Bolashova S.V.

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Journal: Russian Journal of Stomatology. 2021;14(1): 26‑30

DOI: 10.17116/rosstomat20211401126

Downloaded: 34

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To cite this article:

Bolashova SV. Comparison of the effect of laser preparation with Er, Cr: YSSG-laser at different powers and the traditional method of preparation of wedge-shaped defects on the structure of cervical dentin. Russian Journal of Stomatology. 2021;14(1):26‑30. (In Russ.)
https://doi.org/10.17116/rosstomat20211401126

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RELEVANCE

Currently, in addition to traditional methods of treatment, in aesthetic dentistry, more and more new and high-tech methods of treatment are used, which make it possible to simplify the work of the doctor, as well as conduct dental interventions less invasively. One of these technologies is the use of high-energy erbium lasers, which allow the preparation of hard tissues due to their unique wavelengths of 2780 nm and 2790 nm. The most commonly used chromium-erbium device is Waterlase iplus (Biolase, USA), which is capable of dissecting both carious lesions and non-carious ones, including wedge-shaped defects. However, it is still not known how exposure to this laser at various power parameters affects the structure of hard tissues in the area of the wedge-shaped defect in comparison with the traditional preparation method. Thus, the effect of the Waterlase iplus erbium laser on the structure of the cervical dentin in the area of the wedge-shaped defect requires additional research.

OBJECTIVE

To study the effect of Er, Cr: YSSG-laser radiation at various powers on the structure of hard tooth tissues in the area of the wedge-shaped defect and compare with the traditional preparation method.

MATERIAL AND METHODS

For the study, thin sections were made of 20 human teeth with wedge-shaped defects, removed for orthodontic and periodontal indications. Preparation of dental hard tissues before making thin sections was carried out using a Waterlase iplus chromium-erbium laser at various power parameters and using the traditional method using a high-speed handpiece with a diamond bur. The prepared sections were carbon-sputtered on an SPI Module ™ Carbon Coater and further examined on a Tescan Mira LMU scanning electron microscope.

RESULTS

Using the Waterlase iplus chromium erbium laser in 4W mode creates the roughest dentin surface with the largest number of wide open dentinal tubules and almost completely removed smear layer.

CONCLUSIONS

The use of the Waterlase iplus laser in the treatment of wedge-shaped defects in 4W mode creates all the conditions for increasing the adhesion strength of non-carious dentin of the wedge-shaped defect with composite systems due to the roughness and increased number of opened dentinal tubules, which in turn leads to the durability of aesthetic restorations.

Keywords:

erbium laser

wedge-shaped defect

electron microscopy

dentinal tubules

Authors:

Bolashova S.V.

Evdokimov Moscow State University of Medicine and Dentistry

Received:

23.11.2020

Accepted:

11.12.2020

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