Year : 2020 | Volume
: 23 | Issue : 6 | Page : 583--588
Effect of bioactive glasses and neodymium:yttrium-aluminum-garnet laser on dentin permeability
Karla Janilee de Souza Penha1, Fabia Regina Vieira de Oliveira Roma1, Carlos Rocha Gomes Torres2, José Roberto Oliveira Bauer1, Leily Macedo Firoozmand1
1 Department of Dentistry I, Federal University of Maranhão, São Luis, Maranhão, Brazil
2 Department of Restorative Dentistry, Institute of Science and Technology of São José dos Campos (UNESP) – São Paulo State University, SP, Brazil
Context: Dental hypersensitivity and loss of dental tissues are commonly observed in patients, and most of the problems are caused due to total or partial exposure of dentinal tubules.
Aims: The purpose of this study is to evaluate the performance of 45S5 bioactive glass and niobophosphate (NbG) associated with neodymium: yttrium-aluminum-garnet (Nd:YAG) laser for the reduction of dentin permeability.
Materials and Methods: Fifty bovine dentin discs were made and distributed randomly into five groups (n = 10). The Nd:YAG laser was applied with the bioactive glasses using the energy parameters (60 and 80 mJ), forming the groups; NbG_60: NbG + Nd:YAG (60 mJ); NbG_80: NbG + Nd:YAG (80 mJ), 45S5_60: 45S5 + Nd:YAG (60 mJ); 45S5_80: 45S5 + Nd:YAG (80 mJ) and C: control (untreated dentin). The permeability was measured with a split chamber device. The samples were subjected to the erosive challenge and a new permeability measurement was done. Furthermore, the dentin was analyzed by scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS).
Statistical Analysis Used: The data were analyzed using Kruskal–Wallis and Dunn's tests (α = 0.05).
Results: Greater reduction in dentinal permeability was observed for 45S5 bioactive glasses (45S5_60 and 45S5_80) followed by NbG_80 and NbG_60 (P < 0.05). The SEM/EDS analysis showed the formation of a barrier after the dentin treatment.
Conclusions: Bioactive glasses with Nd:YAG laser on the dentin surface may be a promising alternative for the reduction of dentin permeability.
Prof. Leily Macedo Firoozmand
Department of Dentistry I, Federal University of Maranhão, Av. dos Portugueses, 1966, Zip Code: 65085680, São Luis, Maranhão
|How to cite this article:|
de Souza Penha KJ, de Oliveira Roma FR, Gomes Torres CR, Oliveira Bauer JR, Firoozmand LM. Effect of bioactive glasses and neodymium:yttrium-aluminum-garnet laser on dentin permeability.J Conserv Dent 2020;23:583-588
|How to cite this URL:|
de Souza Penha KJ, de Oliveira Roma FR, Gomes Torres CR, Oliveira Bauer JR, Firoozmand LM. Effect of bioactive glasses and neodymium:yttrium-aluminum-garnet laser on dentin permeability. J Conserv Dent [serial online] 2020 [cited 2021 May 12 ];23:583-588
Available from: https://www.jcd.org.in/article.asp?issn=0972-0707;year=2020;volume=23;issue=6;spage=583;epage=588;aulast=de;type=0