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1.
Biomed Res Int ; 2022: 3675703, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35496039

RESUMEN

Aim: To investigate and compare the cell cytotoxicity, proliferation, cell attachment, and morphology of human fetal osteoblasts (hFOB) cells of coated samples (titanium nanocopper (Ti Cu), titanium nanohydroxyapatite (Ti HA) and titanium nanocopper ion doped hydroxyapatite (Ti Cu/HA) and uncoated samples (Ti) in order to assess the suitability of these surface modifications on Ti-6Al-7Nb for dental implant application. Materials and Methods: The cytotoxicity was studied by examining the hFOB cell response by MTT assessment. The cell morphology was evaluated by inverted microscopy and observed under scanning electronic microscopy (SEM). Results: MTT assay results displayed that the Cu content on the surface of Ti-6Al-7Nb alloys did not produce any cytotoxic effect on cell viability. The cell viability rate in all samples ranges from 97% to 126%, indicating that hFOB cells grew at a high proliferation rate. However, no significant differences in cell viability were observed between Ti and Ti Cu and between Ti HA and Ti Cu/HA groups. Microscopic examination demonstrated no difference in the cell morphology of hFOB among all samples. In addition, SEM observation indicated favorable adhesion and spreading of the cells on the coated and uncoated samples. Conclusions: The surface modification of Ti-6Al-7Nb alloy with Cu, HA, and Cu/HA exhibits good cell biocompatibility, and the Cu has no influence on the cell proliferation and differentiation of hFOB.


Asunto(s)
Nanopartículas , Titanio , Humanos , Cobre , Durapatita , Titanio/farmacología
2.
J Contemp Dent Pract ; 23(9): 889-894, 2022 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-37282995

RESUMEN

OBJECTIVE: A great number of patients are completely satisfied with a regular denture, on the other hand, numerous patients are still not satisfied with their denture functions despite proper denture manufacture in relation to prosthetic standards. AIM: To estimate the parameters of satisfaction for patients to improve the health care quality of patients and evaluate the effect of the adaptation period. MATERIALS AND METHODS: A total of 136 patients who participated in this study were patients with complete dentures (CD), after placement of the CD, the patients were asked some questions (about esthetics, phonetics, comfort, quality of fit, and the masticatory efficiency) and the satisfaction of patients was evaluated by using Likert's scale, then recorded four readings, first at the placement visit, second after 1 month, third after 45 days, and last after 2 months. RESULTS: The female patients' satisfaction related to phonetics was about 37.8% at the placement visit, but about 91.2% after 2 months; the male patients' satisfaction related to phonetics was about 44% at the placement visit, then 94.6% after 2 months; the female patients' satisfaction as related to esthetics was about 56.6% at the placement visit, but was about 89.8% after 2 months; the male patients' satisfaction as related to esthetics was about 68% at the placement visit, but about 89.4% after 2 months. CONCLUSION: The satisfaction of the patient with their CD is affected by many factors such as phonetics, esthetics, comfort levels, the quality of fitness of the denture, and the mastication. The differences between gender in satisfaction in all parameters were non-significant, that is, p > 0.001. The adaptation period has an effect on the satisfaction rate of the completely edentulous patient with their CD.


Asunto(s)
Boca Edéntula , Satisfacción del Paciente , Humanos , Masculino , Femenino , Estética Dental , Dentadura Completa , Masticación
3.
Biomed Res Int ; 2021: 9934073, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34222489

RESUMEN

BACKGROUND: This paper reports the corrosion behavior of uncoated commercially pure titanium and Ti-6Al-4V samples and these coated with hydroxyapatite, partial stabilized zirconia (PSZ), and the mixture of partial stabilized zirconia and hydroxyl-apatite by measuring passivation current density and see if there are any differences between them using electrochemical polarization tests in 37°C Hank's solution. MATERIALS AND METHODS: The electrophoretic deposition method (EPD) was elected to keep the coating materials which are HA, PSZ, and the mixture of 50% HA and 50% PSZ on Cp Ti and Ti-6Al-4V alloy samples. The electrochemical corrosion test was achieved by exposing the coated and uncoated samples to Hank's solution which prepared in the laboratory and measuring the polarization potential, passivation current density, and the open circuit potential for all samples. RESULTS: The results indicated that the passivation current density for all Cp Ti and Ti-6Al-4V alloy groups that coated with HA, PSZ, and with mixture of 50/50 HA and PSZ was less than uncoated groups. There are no significant differences between all Cp Ti groups when compared with all Ti-6Al-4 V alloy groups. The open circuit potential (OCP) for both Cp Ti and Ti -6Al -4V samples was in the following sequence PSZ > HA > mixture of HA and PSZ > uncoated. CONCLUSIONS: Coating significantly decreased the passivation current density of Cp Ti and Ti-6Al-4V alloy.


Asunto(s)
Cerámica/metabolismo , Materiales Biocompatibles Revestidos/química , Implantes Dentales , Aleaciones , Corrosión , Aleaciones Dentales , Durapatita , Electroquímica , Electroforesis , Humanos , Ensayo de Materiales , Reproducibilidad de los Resultados , Propiedades de Superficie , Titanio/química , Difracción de Rayos X , Circonio/química
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