Enhanced compatibility and initial stability of Ti6Al4V alloy orthodontic miniscrews subjected to anodization, cyclic precalcification, and heat treatment

Oh, Eun‐Suok; Nguyen, Thuy Duong; Lee, Seung Youp; Jeon, Young Mi; Bae, Tae Sung; Kim, Jong Gee

doi:10.4041/kjod.2014.44.5.246

Cited by 26 publications

(33 citation statements)

References 21 publications

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“…Many methods including surface treatments such as polishing and modification of surface free energy10111213 have been employed to reduce or nullify the bacterial aggregation around titanium-based prosthesis. Elemental silver has been specifically known for its array of antimicrobial properties for many years 14.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of silver nanoparticles on the surface of orthodontic microimplants to achieve antimicrobial properties

et al. 2017

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ObjectiveMicrobial aggregation around dental implants can lead to loss/loosening of the implants. This study was aimed at surface treating titanium microimplants with silver nanoparticles (AgNPs) to achieve antibacterial properties.MethodsAgNP-modified titanium microimplants (Ti-nAg) were prepared using two methods. The first method involved coating the microimplants with regular AgNPs (Ti-AgNP) and the second involved coating them with a AgNP-coated biopolymer (Ti-BP-AgNP). The topologies, microstructures, and chemical compositions of the surfaces of the Ti-nAg were characterized by scanning electron microscopy (SEM) equipped with energy-dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). Disk diffusion tests using Streptococcus mutans, Streptococcus sanguinis, and Aggregatibacter actinomycetemcomitans were performed to test the antibacterial activity of the Ti-nAg microimplants.ResultsSEM revealed that only a meager amount of AgNPs was sparsely deposited on the Ti-AgNP surface with the first method, while a layer of AgNP-coated biopolymer extended along the Ti-BP-AgNP surface in the second method. The diameters of the coated nanoparticles were in the range of 10 to 30 nm. EDS revealed 1.05 atomic % of Ag on the surface of the Ti-AgNP and an astounding 21.2 atomic % on the surface of the Ti-BP-AgNP. XPS confirmed the metallic state of silver on the Ti-BP-AgNP surface. After 24 hours of incubation, clear zones of inhibition were seen around the Ti-BP-AgNP microimplants in all three test bacterial culture plates, whereas no antibacterial effect was observed with the Ti-AgNP microimplants.ConclusionsTitanium microimplants modified with Ti-BP-AgNP exhibit excellent antibacterial properties, making them a promising implantable biomaterial.

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Section: Introductionmentioning

confidence: 99%

Incorporation of silver nanoparticles on the surface of orthodontic microimplants to achieve antimicrobial properties

et al. 2017

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“…Many studies have been performed to modify the surface characteristics of titanium implants for improving the osseointegration. One of surface modifications is an anodic oxidation that is a well-established surface modification technique for value metals [8][9][10]13]. Anodized TiO 2 films may have different mechanical and chemical characteristics by different treatment conditions.…”

Section: Discussionmentioning

confidence: 99%

“…This phenomenon also occurs on the surfaces of bioactive glass and glass ceramics [7,8]. Research showed that high degree of bone contact and bone formation was achieved with anodized titanium surface [9][10][11]. Saldana et al reported that the ability of human osteoblasts to differentiate when cultured on thermally oxidized titanium alloy [12].…”

Section: Introductionmentioning

confidence: 99%

Surface properties and early murine pre-osteoblastic cell responses of anodized TiO₂ surfaces

Kim

Lee

et al. 2018

Oral Biol Res

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·············································································································································································The noted anodic oxidation of titanium surfaces by the utilization of an electrochemical method is one of the procedures that can be used for the enhancement of osseointegration. This study evaluated the surface characteristics and the cell response of titanium samples that were modified by different treatment conditions. The samples were subsequently divided into 4 groups. In this study, Group I was noted as an anodized TiO 2 film using a constant voltage, 270 V for 30 sec. Further, Group II was noted as using an anodized TiO 2 film using a constant voltage, 270 V for 60 sec. Also, Group III was an anodized TiO 2 film using a constant voltage, 270 V for 90 sec. The control was a non-treated machined titanium surface. The results were as follows: the XRD analysis showed that the crystallinity of anodic oxide film was composed of anatase and rutile. The study continued with the procedure of increasing the time for anodization, whereby it was noted that the intensity of the TiO 2 peaks for anatase phase decreased, while the TiO 2 peak for the rutile phase was seen to have increased. In the MTT assay, it was noted that there was no significant difference in the response of fetal rat calvarial cells to the anodized titanium surfaces with the different treatment conditions. Similarly, the Group II and III showed higher ALP activity levels compared with the control and Group I (p<0.01). In the RT-PCR analysis, it is noted that the bone sialoprotein mRNA expression in Group II and III increased approximately 1.7-fold and 1.5-fold respectively, compared with the control, which was cp-Ti. The osteocalcin mRNA expression in Group II and III also increased approximately 1.6-fold and 1.7-fold respectively, compared with the control. Fundamentally, these results suggest that the anodized TiO 2 surfaces treated at 60 and 90 sec, should promote cellular activity of the noted and reviewed osteoblasts, as compared with the machined Ti surface.

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“…Kim et al29 reported that the Ca/P ratio was above 1.5 in the early stage of placement of implant, because of the presence of newly formed bone. The difference probably arises from the fact that transmission electron microscopy was used, which is able to detect newly formed bone, unlike the SEM33 that we used in this study. This could be considered a limitation of our study.…”

Section: Discussionmentioning

confidence: 99%

Bone cutting capacity and osseointegration of surface-treated orthodontic mini-implants

Kim

2016

Korean J Orthod

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ObjectiveThe objective of the study was to evaluate the practicality and the validity of different surface treatments of self-drilling orthodontic mini-implants (OMIs) by comparing bone cutting capacity and osseointegration.MethodsSelf-drilling OMIs were surface-treated in three ways: Acid etched (Etched), resorbable blasting media (RBM), partially resorbabla balsting media (Hybrid). We compared the bone cutting capacity by measuring insertion depths into artificial bone (polyurethane foam). To compare osseointegration, OMIs were placed in the tibia of 25 rabbits and the removal torque value was measured at 1, 2, 4, and 8 weeks after placement. The specimens were analyzed by optical microscopy, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS).ResultsThe bone cutting capacity of the etched and hybrid group was lower than the machined (control) group, and was most inhibited in the RBM group (p < 0.05). At 4 weeks, the removal torque in the machined group was significantly decreased (p < 0.05), but was increased in the etched group (p < 0.05). In the hybrid group, the removal torque significantly increased at 2 weeks, and was the highest among all measured values at 8 weeks (p < 0.05). The infiltration of bone-like tissue surface was evaluated by SEM, and calcium and phosphorus were detected via EDS only in the hybrid group.ConclusionsPartial RBM surface treatment (hybrid type in this study) produced the most stable self-drilling OMIs, without a corresponding reduction in bone cutting capacity.

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Enhanced compatibility and initial stability of Ti6Al4V alloy orthodontic miniscrews subjected to anodization, cyclic precalcification, and heat treatment

Cited by 26 publications

References 21 publications

Incorporation of silver nanoparticles on the surface of orthodontic microimplants to achieve antimicrobial properties

Incorporation of silver nanoparticles on the surface of orthodontic microimplants to achieve antimicrobial properties

Surface properties and early murine pre-osteoblastic cell responses of anodized TiO₂ surfaces

Bone cutting capacity and osseointegration of surface-treated orthodontic mini-implants

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