Influence of high-power laser irradiation on the physical-chemical and mechanical properties of Ti-6Al-4V disks

• Grant number: 19/09213-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): September 01, 2019
• Effective date (End): October 31, 2020
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Mariana Lima da Costa Valente
• Grantee: Isadora Gazott Simões
• Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

The diverse proposals of surface treatment for dental implants promoted the development of the implantology and a high index of success of this therapy. The high-power laser can modify titanium surfaces creating a complex topography with micro- and nano-scaled patterns, as well as a layer of oxide that can improve osseointegration. However, due to its recent use for this purpose, its effects on the properties of the surfaces of titanium and its alloys are still controversial. Thus, the objective of the present study will be to evaluate the influence of the high power laser on the physical-chemical and mechanical properties of Ti-6Al-4V disks machined and with surface treatment by hydroxyapatite (HA) coating. 40 titanium discs (Ti-6Al-4V) will be used (n = 10) (Ø 8mm × 3mm thickness): G1 - machined polished without irradiation; G2 - machined polished with irradiation; G3 - treated with HA coating without irradiation; G4 - treated with HA coating with irradiation. In all the groups will be performed out analyzes of the topography and chemical composition by Scanning Electron Microscopy (EDS) and X-ray Dispersive Energy Spectroscopy (EDS), changes in wettability through a goniometer and surface roughness using a Confocal Microscope the Laser. The results obtained will be submitted to parametric or non-parametric tests according to the data distribution (±=0.05).

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SIMOES, ISADORA GAZOTT; KREVE, SIMONE; CRUZ, MARCOS ANTONIO EUFRASIO; BOTELHO, ANDRE LUIS; RAMOS, ANA PAULA; DOS REIS, ANDREA CANDIDO; DA COSTA VALENTE, MARIANA LIMA. Influence of Er:YAG laser irradiation on surface properties of Ti-6Al-4V machined and hydroxyapatite coated. Lasers in Medical Science, v. 38, n. 1, p. 9-pg., 2023-01-23. (19/09213-3)

SIMOES, ISADORA GAZOTT; DOS RES, ANDREA CANDIOO; VALENTE, MARIANA LIMA DA COSTA. Analysis of the influence of surface treatment by high-power laser irradiation on the surface properties of titanium dental implants: A systematic review. JOURNAL OF PROSTHETIC DENTISTRY, v. 129, n. 6, p. 8-pg., 2023-06-01. (19/09213-3)

SIMOES, ISADORA GAZOTT; DOS REIS, ANDREA CANDIDO; VALENTE, MARIANA LIMA DA COSTA. Influence of surface treatment by laser irradiation on bacterial adhesion on surfaces of titanium implants and their alloys: Systematic review. SAUDI DENTAL JOURNAL, v. 35, n. 2, p. 14-pg., 2023-02-01. (19/09213-3, 21/11843-5)