Bone tissue response to plasma-nitrided titanium implant surfaces

被引:9
|
作者
Ferraz, Emanuela Prado [1 ]
Sverzut, Alexander Tadeu [2 ]
Freitas, Gileade Pereira [1 ]
Sa, Juliana Carvalho [3 ]
Alves, Clodomiro, Jr. [3 ]
Beloti, Marcio Mateus [1 ]
Rosa, Adalberto Luiz [1 ]
机构
[1] Univ Sao Paulo, Sch Dent Ribeirao Preto, Cell Culture Lab, BR-14040904 Ribeirao Preto, SP, Brazil
[2] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Oral Diag, Oral & Maxillofacial Surg Div, Campinas, SP, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Mech Engn, BR-59072970 Natal, RN, Brazil
基金
巴西圣保罗研究基金会;
关键词
Bone; Dental implants; Plasma gases; Titanium; DENTAL IMPLANTS; TINOX COATINGS; CELL-ADHESION; OSSEOINTEGRATION; PROLIFERATION; INTEGRATION;
D O I
10.1590/1678-775720140376
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
A current goal of dental implant research is the development of titanium (Ti) surfaces to improve osseointegration. Plasma nitriding treatments generate surfaces that favor osteoblast differentiation, a key event to the process of osteogenesis. Based on this, it is possible to hypothesize that plasma-nitrided Ti implants may positively impact osseointegration. Objective: The aim of this study was to evaluate the in vivo bone response to Ti surfaces modified by plasma-nitriding treatments. Material and Methods: Surface treatments consisted of 20% N-2 and 80% H-2, 450 degrees C and 1.5 mbar during 1 h for planar and 3 h for hollow cathode. Untreated surface was used as control. Ten implants of each surface were placed into rabbit tibiae and 6 weeks post-implantation they were harvested for histological and histomorphometric analyses. Results: Bone formation was observed in contact with all implants without statistically significant differences among the evaluated surfaces in terms of bone-to-implant contact, bone area between threads, and bone area within the mirror area. Conclusion: Our results indicate that plasma nitriding treatments generate Ti implants that induce similar bone response to the untreated ones. Thus, as these treatments improve the physico-chemical properties of Ti without affecting its biocompatibility, they could be combined with modifications that favor bone formation in order to develop new implant surfaces.
引用
收藏
页码:9 / 13
页数:5
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