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Titolo:
Surface characterizations of variously treated titanium materials
Autore:
Lim, YJ; Oshida, Y; Andres, CJ; Barco, MT;
Indirizzi:
Indiana Univ, Sch Dent, Dept Restorat Dent, Dent Mat Div, Indianapolis, IN46202 USA Indiana Univ Indianapolis IN USA 46202 Mat Div, Indianapolis, IN46202 USA Kangbuk Samsung Hosp Dent Ctr, Dept Prosthodont, Seoul, South Korea Kangbuk Samsung Hosp Dent Ctr Seoul South Korea ont, Seoul, South Korea Indiana Univ, Sch Dent, Grad Prosthodont Program, Indianapolis, IN 46202 USA Indiana Univ Indianapolis IN USA 46202 rogram, Indianapolis, IN 46202 USA
Titolo Testata:
INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS
fascicolo: 3, volume: 16, anno: 2001,
pagine: 333 - 342
SICI:
0882-2786(200105/06)16:3<333:SCOVTT>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
BONELIKE APATITE LAYER; HUMAN-FIBROBLASTS; IMPLANT MATERIALS; CONTACT ANGLES; FREE-ENERGY; SUBSTRATUM; WETTABILITY; CRYSTALLIZATION; BIOMATERIALS; ROUGHNESS;
Keywords:
oxides; surface properties; titanium; titanium alloy (Ti-6Al-4V); titanium nitride (TiNi); wettability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Oshida, Y Indiana Univ, Sch Dent, Dept Restorat Dent, Dent Mat Div, 1121 WMichigan St, Indianapolis, IN 46202 USA Indiana Univ 1121 W Michigan St Indianapolis IN USA 46202 02 USA
Citazione:
Y.J. Lim et al., "Surface characterizations of variously treated titanium materials", INT J O M I, 16(3), 2001, pp. 333-342

Abstract

The attachment of cells to titanium surfaces is an important phenomenon inthe area of clinical implant dentistry. A major consideration in designingimplants has been to produce surfaces that promote desirable responses in the cells and tissues. To achieve these requirements, the titanium implant surface can be modified in various ways. This research was designed to elucidate the relationship between surface roughness (R-a) and contact angle (theta) of various engineered titanium surfaces of commercially pure titanium, titanium-aluminum-vanadium alloy (Ti-6Al-4V), and titanium-nickel (TiNi) alloy. The contact angle was measured using distilled water, 1% sodium chloride solution, human neutrophils, and osteoblast-like cells. Surface oxide crystallography was identified by transmission electron diffraction, It wasfound that: (1) there were no significant differences in contact angles among the 4 media; (2) for commercially pure titanium, a combined treatment (hydrofluoric acid/nitric acid/water --> sodium hydroxide --> oxidation) showed the lowest theta (10.51 degrees in water), while the surface treated with sulfuric acid showed the highest value (72.99 degrees in water); (3) forall commercially pure titanium samples, when theta is greater than 45 degrees, the contact angle increases linearly with R-a (hydrophobic nature) andthe surface is covered with rutile-type oxide only, while the contact angle decreases linearly with R-a when theta is less than 45 degrees (hydrophilic nature) and the surface is covered with a mixture of rutile and anatase oxides; and (4) a similar trend was found on Ti-6Al-4V and TiNi surfaces.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 11:55:35