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; Matheus Coelho Bandeca

doi:10.5005/jp-journals-10024-1705

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

J Contemp Dent Pract. 2015 Jun 1;16(6):451-7. doi: 10.5005/jp-journals-10024-1705.

Authors

Thiago Soares Porto¹, Betina Grehs Porto¹, Edson Alves de Campos¹, Sizenando de Toledo Porto-Neto¹, Monica Barros da Silva², Shilpa H Bhandi³, Mateus Rodrigues Tonetto⁴, Welingtom Dinelli¹, Matheus Coelho Bandeca⁵

Affiliations

¹ Department of Restorative Dentistry, Universidade Estadual Paulista, Araraquara, Sao Paulo, Brazil.
² Department of Postgraduate Program in Dentistry, CEUMA University, Sao Luis, MA, Brazil.
³ Department of Conservative Dentistry and Endodontics, MS Ramaiah Dental College and Hospital, Bengaluru, Karnataka India.
⁴ Department of Dentistry, University of Cuiaba, Postgraduation in Integrated Sciences, Cuiaba, MT, Brazil.
⁵ Professor, Department of Postgraduate Program in Dentistry, CEUMA University, Rua Josue Montello, s/n, Zip Code: 65.075-120 Sao Luis, MA, Brazil, e-mail: [email protected].

PMID: 26323447
DOI: 10.5005/jp-journals-10024-1705

Abstract

Aim: 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.

Materials and methods: 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).

Results: 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.

Conclusion: 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.

Clinical relevance: 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.

Keywords: Ceramics; Laser; Scanning electron microscopy..

MeSH terms

Acid Etching, Dental / methods
Dental Porcelain / chemistry*
Hydrofluoric Acid / chemistry
Lasers, Solid-State
Materials Testing / methods
Microscopy, Electron, Scanning
Surface Properties

Substances

Dental Porcelain
Hydrofluoric Acid