scholarly journals Surface Modifications for Zirconia Dental Implants: A Review

2021 ◽  
Vol 2 ◽  
Author(s):  
Lu Sun ◽  
Guang Hong
Keyword(s):  
Surface Modification ◽  
Dental Implants ◽  
Surface Coating ◽  
Surface Modifications ◽  
Physical Treatment ◽  
Long Term Stability ◽  
Zirconia Implants ◽  
Effect Of Surface ◽  
Zirconia Implant

Zirconia-based bioceramic is a potential material for dental implants developed and introduced in dentistry 30 years ago. However, some limitations still exist for zirconia implants caused by several factors, such as manufacturing difficulties, low-temperature degradation (LTD), long-term stability, and clinical experience. Several studies validated that some subtle changes on the zirconia surface might significantly impact its mechanical properties and osseointegration. Thus, attention was paid to the effect of surface modification of zirconia implants. This review generally summarizes the surface modifications of zirconia implants to date classified as physical treatment, chemical treatment, and surface coating, aiming to give an overall perspective based on the current situation. In conclusion, surface modification is an effective and essential method for zirconia implant application. However, before clinical use, we need more knowledge about these modification methods.

Implant Surface Modification and Osseointegration-Past, Present and Future

2014 ◽  
Vol 8 (2) ◽  
pp. 113-118 ◽  
Author(s):  
A Kumar ◽  
V Kumar ◽  
M Goel ◽  
R Mehta ◽  
G Bhayana ◽  
...  
Keyword(s):  
Surface Modification ◽  
Surface Properties ◽  
Dental Implant ◽  
Research Evidence ◽  
Surface Modifications ◽  
Biological Fixation ◽  
Implant Surface ◽  
Jaw Bones

ABSTRACT Biological fixation between the dental implant surfaces and jaw bones should be considered a prerequisite for the long-term success of implant-supported prostheses. The implant surface modifications gained an important and decisive place in implant research over the last years. Nowadays, a large number of implant types with a great variety of surface properties and other features are commercially available and have to be treated with caution. Although surface modifications have been shown to enhance osseointegration at early implantation times, for example, the clinician should look for research evidence before selecting a dental implant for a specific use.

scholarly journals Amorphous outperforms crystalline nanomaterials: surface modifications of molecularly derived CoP electro(pre)catalysts for efficient water-splitting

2019 ◽  
Vol 7 (26) ◽  
pp. 15749-15756 ◽  
Author(s):  
Rodrigo Beltrán-Suito ◽  
Prashanth W. Menezes ◽  
Matthias Driess
Keyword(s):  
Water Splitting ◽  
Crystalline Phase ◽  
Surface Modifications ◽  
Term Stability ◽  
Long Term Stability ◽  
Overall Water Splitting ◽  
Low Overpotential

Amorphous CoP outperforms the crystalline phase in the OER, HER and overall water splitting with low overpotential and remarkable long-term stability.

Use of 3-D Printed Models for Implant Placement - A Case Series

2021 ◽  
Author(s):  
Soundariya Bala Muralei
Keyword(s):  
Dental Implants ◽  
Alveolar Bone ◽  
Three Dimensional ◽  
Case Series ◽  
Proper Position ◽  
Anatomical Structures ◽  
Long Term Stability ◽  
Implant Placement ◽  
Plaster Models

Long-term stability of a dental implant depends on various factors, one among them is proper position within the alveolar bone. Pre-operative thorough examination of the surgical site is preliminary step while planning dental implants. Conventional techniques such as Intra-Oral Periapical Radiograph and Ortho Pantamogram sometimes not sufficient and clinical scenario always surprises the surgeon. Later advent of Cone-Beam Computed Tomography alleviated this problem to some extent but there are some clinical situations such as resorbed ridge where better visualisation is needed. This led to the innovation of rapid prototyping techniques for the fabrication of three-dimensional complex structures. This technology has numerous applications from the development of an instrument, 3-D printed anatomical models to the fabrication of 3-D printed tissues for regeneration procedures. A 3-D printed model is much more useful than plaster models in many aspects such as demonstrating anatomical structures, better treatment planning, and better understanding for the patient. Hence, this case series focuses on the use of 3-D printed models in the placement of dental implants.

Measurement of Dispersion Stability of Surface-Modified Nanosized Carbon Black in Various Liquids

2007 ◽  
Vol 7 (11) ◽  
pp. 3827-3829 ◽  
Author(s):  
Heang Sin Jang ◽  
Dong-Wha Park ◽  
Sang Eun Shim
Keyword(s):  
Carbon Black ◽  
Colloidal Stability ◽  
Dispersion Stability ◽  
Scattering Method ◽  
Long Term Stability ◽  
Dispersion Agent ◽  
Surface Modified ◽  
Multiple Light Scattering ◽  
Effect Of Surface

The dispersion stability of nano-sized carbon black produced by a thermal plasma process was investigated using a novel multiple light scattering method. The effect of surface modification of carbon black on the dispersion stability was monitored in various polar and non-polar liquids including water, methanol, styrene, and toluene. The results show that carbon black functionalized with carboxylic anion groups has much improved colloidal stability in a polar solvent and the degree of dispersion stability is strongly related to the solubility parameter value of liquids. In addition, the carbon black with carboxylic anions has a long-term stability without any auxiliary dispersion agent such as a surfactant due to electrostatic repulsion.

Towards the Optimal Crown-to-Implant Ratio in Dental Implants

2017 ◽  
Author(s):  
T. J. Sego ◽  
Yung-Ting Hsu ◽  
Tien-Min Gabriel Chu ◽  
Andres Tovar
Keyword(s):  
Dental Implants ◽  
Strain Distribution ◽  
Mechanical Stability ◽  
Element Model ◽  
Equivalent Strain ◽  
Skeletal Tissue ◽  
Term Stability ◽  
Long Term Stability ◽  
Clinical Scenarios

Short dental implants are commonly recommended to be implemented with small crown-to-implant (C/I) ratios due to their mechanical stability — decreasing C/I ratios cause less deformation in skeletal tissue under occlusal force. However, the long-term stability of short implants with high C/I ratios remains a controversial issue due to biomechanical complications. This study evaluates the strain distribution and functional implications in an implant-supported crown with various C/I ratios using a high-fidelity, nonlinear finite-element model. Several clinical scenarios are simulated by loading implants with various implant lengths (IL) and crown heights (CH). Strain distribution and maximum equivalent strain are analyzed to evaluate the effects and significance of CH, IL, and the C/I ratio. The study shows underloading for certain implant configurations with high C/I ratio. Increasing IL and decreasing C/I in moderation demonstrates a positive effect in long-term stability.

High-voltage capabilities of ultra-thin Nb2O5 nanosheet coated LiNi1/3Co1/3Mn1/3O2 cathodes

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67514-67519 ◽  
Author(s):  
S. Uchida ◽  
N. Zettsu ◽  
K. Hirata ◽  
K. Kami ◽  
K. Teshima
Keyword(s):  
High Voltage ◽  
Contact Area ◽  
Surface Coating ◽  
Charged State ◽  
Term Stability ◽  
Long Term Stability

The surface coating of LiNi1/3Co1/3Mn1/3 electrode with 1.1 nm Nb2O5 nanosheet enhanced the high voltage capability and long term stability of the charged state at 60 °C by reducing the contact area between electrode and electrolyte.

Transport and Retention Behavior of ZnO Nanoparticles in Two Natural Soils: Effect of Surface Coating and Soil Composition

2012 ◽  
Vol 17 ◽  
pp. 229-242 ◽  
Author(s):  
Li Juan Zhao ◽  
Jose R. Peralta-Videa ◽  
Jose Angel Hernandez-Viezcas ◽  
Jie Hong ◽  
Jorge L. Gardea-Torresdey
Keyword(s):  
Surface Coating ◽  
Sandy Loam ◽  
Soil Composition ◽  
Zno Nps ◽  
Exchangeable Fraction ◽  
Soil Clay ◽  
Glass Columns ◽  
Soil Components ◽  
Effect Of Surface

The widespread use of nanoparticles (NPs) in consumer goods could put these materials in the waste stream, potentially to soil and sediments. However, little is known about their transport in water and soils. In this study, transport behavior and attachment of ZnO NPs in soil components were studied through column experiments and sequential extraction, respectively. Bare and sodium citrate coated ZnO NP suspended in CaCl2 solutions at different ionic strengths, were passed through glass columns packed with sandy soils (SS) and sandy loam soils (SLS) and the effluents were analyzed by ICP-OES. The distribution of Zn in soil particles was studied by electron microprobe (EMP). Results showed that 99% of Zn/ZnO NPs was retained in SLS and 68% ~ 99% was retained in SS, for ionic strengths varying from 0 to 1 mM. Travel distances (cm) for bare ZnO NPs in SS and SLS were 19.2 and 5.3, respectively, while for coated NPs the distances were 21.4 and 6.9 cm, respectively. The surface coating reduced deposition rates from 0.73 to 0.65 and from 2.28 to 1.74 for SS and SLS, respectively. In both soils the amounts of uncoated NPs in the exchangeable fraction were less than 1%; however, 30% of coated NPs remained in the exchangeable fraction. EMP mapping showed that Zn/ZnO NPs associated with silica and aluminum, which are indicators of soil clay minerals. Long term observations are still needed to evaluate the bioavailability to plants of Zn released from coated and uncoated ZnO NPs.

Zirconia Removable Telescopic Dentures Retained on Teeth or Implants for Maxilla Rehabilitation. Three-Year Observation of Three Cases

2010 ◽  
Vol 36 (6) ◽  
pp. 455-465 ◽  
Author(s):  
Gregory-George Zafiropoulos ◽  
Jochen Rebbe ◽  
Ulrich Thielen ◽  
Giorgio Deli ◽  
Christian Beaumont ◽  
...  
Keyword(s):  
Dental Implants ◽  
High Quality ◽  
Prosthetic Reconstruction ◽  
Implant Abutments ◽  
Large Populations ◽  
Cad Cam ◽  
Natural Teeth ◽  
Long Term Studies ◽  
Zirconia Implant

Abstract This report addresses maxillary restoration with removable telescopic crown-retained palatal free dentures. One patient with 7 natural teeth (PERIO), a second patient with 6 dental implants (IMPL), and a third patient with 2 natural teeth and 4 dental implants (IMPL-PERIO) were treated. Zirconia copings for natural teeth and individual zirconia implant abutments were fabricated in CAD/CAM and used as primary crowns. Electroformed gold copings were used as secondary telescopes. All maxilla supraconstructions were fabricated with zirconia and CAD/CAM. Patients were monitored during a 3-year period; all teeth and implants survived, and no biological or mechanical complications occurred. The peri-implant and periodontal conditions were healthy. While recognizing the limitations of this report, results showed that fabricating removable zirconia structures by means of CAD/CAM can yield highly functional and esthetic results. Galvanoforming technology is the preferable means of fabricating secondary crowns. The combination of these techniques and materials results in a prosthetic reconstruction of high quality, good fit, and biocompatibility. Long-term studies of large populations are necessary to investigate the clinical properties of the material utilized in this type of construction.

Effect of surface modification of zirconia on cell adhesion, metabolic activity and proliferation of human osteoblasts

2017 ◽  
Vol 62 (1) ◽  
Author(s):  
Waleed M.S. Al Qahtani ◽  
Christine Schille ◽  
Sebastian Spintzyk ◽  
Mohammed S.A. Al Qahtani ◽  
Eva Engel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Dental Implants ◽  
State Of The Art ◽  
Human Osteoblast ◽  
Stabilized Zirconia ◽  
Human Osteoblasts ◽  
Titanium Dental Implants ◽  
Zirconia Implants ◽  
Effect Of Surface

AbstractTitanium dental implants with sandblasted and/or acid-etched surfaces have shown clinical superiority in comparison to their smooth, machined counterparts, and are now state of the art. Sandblasting of finished, sintered zirconia implants, however, will damage the surface structure and affect the mechanical properties. To improve osseointegration of zirconia dental implants without impairing the original mechanical strength by crack initiation and partial phase transformation from tetragonal to monoclinic, roughening of the zirconia surface by sandblasting before the final sintering step was employed. Impact of the treatments on cellular reactions of SAOS-2 human osteoblast-like cells was investigated. Sandblasting of Yttrium-stabilized zirconia (Y-TZP) with 120 μm and 250 μm Al

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