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Nd:YAG Laser to obtain Irregularities on the Inner Surface of Porcelain
Journal article   Open access

Nd:YAG Laser to obtain Irregularities on the Inner Surface of Porcelain

Thiago Soares Porto, Betina Grehs Porto, Edson Alves de Campos, Sizenando de Toledo Porto-Neto, Monica Barros da Silva, Shilpa H Bhandi, Mateus Rodrigues Tonetto, Welingtom Dinelli and Matheus Coelho Bandeca
The journal of contemporary dental practice, Vol.16(6), pp.451-457
06/01/2015
DOI: 10.5005/JP-JOURNALS-10024-1705
PMID: 26323447
url
https://doi.org/10.5005/JP-JOURNALS-10024-1705View
Published (Version of record) Open Access

Abstract

The aim of this study was to evaluate the inner surface of two ceramic systems: IPS Empress II (Ivoclar Vivadent, Germany) and In-Ceram Alumina (Vita Zahnfabrick, Germany) submitted to surface treatments, especially by Nd:YAG laser. Fifty samples were prepared in pellet form for each ceramic system according to manufacturers' specifications. The samples were stored at room temperature and then be subjected to surface treatment: without treatment (T0) (control), hydrofluoric acid-etched (T1), hydrofluoric acid-etched associated with the airborne particle-abraded (T2); CoJet system (T3), Nd:YAG laser (T4). The data were performed the statistical analysis by ANOVA and Tukey's test (p < 0.001). The group control (T0) of the ceramics, the analysis showed the lowest roughness values; for the System Alumina In-Ceram, treatment with hydrofluoric acid (T1), associated with hydrofluoric acid and airborne particle-abraded (T2) and Nd:YAG laser (T4), had no statistically significant difference, whereas for the IPS Empress System II treatment with hydrofluoric acid (T1) and hydrofluoric acid associated with airborne particle-abraded (T2), had no statistically significant difference between the system and also CoJet (T3) and hydrofluoric acid associated with the airborne particle-abraded (T2). Photomicrographs of scanning electron microscopy showed different characteristics to the treatments for each ceramic system. The IPS Empress II had the appearance of favoring the retention when treated with hydrofluoric acid, as well as its association with the airborne particle-abraded. Uncertainty in Alumina, treatment with hydrofluoric acid associated with the airborne particle-abraded and CoJet system and provided a surface with irregularities. With respect to the laser further studies should be performed for parameters that are ideal for your application. The ceramic restorations are attractive due of their excellent esthetics and the ability to stay for long periods. However, the retention of ceramic requires further study.
Acid Etching, Dental - methods Dental Porcelain - chemistry Hydrofluoric Acid - chemistry Lasers, Solid-State Materials Testing - methods Microscopy, Electron, Scanning Surface Properties

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