Influence of simulated bone-implant contact and implant diameter on secondary stability: a resonance frequencyin vitrostudy

2013 ◽  
Vol 25 (8) ◽  
pp. 899-904 ◽  
Author(s):  
Mario Veltri ◽  
Oscar González-Martín ◽  
Urs C. Belser
Keyword(s):  
Bone Implant ◽  
Bone Implant Contact ◽  
Secondary Stability

scholarly journals Sandblasted and Acid Etched Titanium Dental Implant Surfaces Systematic Review and Confocal Microscopy Evaluation

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1763 ◽  
Author(s):  
Gabriele Cervino ◽  
Luca Fiorillo ◽  
Gaetano Iannello ◽  
Dario Santonocito ◽  
Giacomo Risitano ◽  
...  
Keyword(s):  
Confocal Microscopy ◽  
Cellular Adhesion ◽  
Biological Processes ◽  
Exclusion Criteria ◽  
Implant Surface ◽  
Bone Implant ◽  
Study Materials ◽  
Bone Implant Contact ◽  
Titanium Dental Implant ◽  
Secondary Stability

The field of dental implantology has made progress in recent years, allowing safer and predictable oral rehabilitations. Surely the rehabilitation times have also been reduced, thanks to the advent of the new implant surfaces, which favour the osseointegration phases and allow the clinician to rehabilitate their patients earlier. To carry out this study, a search was conducted in the Pubmed, Embase and Elsevier databases; the articles initially obtained according to the keywords used numbered 283, and then subsequently reduced to 10 once the inclusion and exclusion criteria were applied. The review that has been carried out on this type of surface allows us to fully understand the features and above all to evaluate all the advantages or not related. The study materials also are supported by a manufacturing company, which provided all the indications regarding surface treatment and confocal microscopy scans. In conclusion, we can say that, thanks to these new surfaces, it has been possible to shorten the time necessary to obtain osseointegration and, therefore, secondary stability on the part of implants. The surfaces, therefore, guarantee an improved cellular adhesion and thanks to the excellent wettability all the biological processes that derive from it, such as increases in the exposed implant surface, resulting in an increase in bone-implant contact (BIC).

Strontium-Loaded Nanotubes of Ti–24Nb–4Zr–8Sn Alloys for Biomedical Implantation

2021 ◽  
Vol 17 (9) ◽  
pp. 1812-1823
Author(s):  
Fei Liu ◽  
Xinyu Wang ◽  
Shujun Li ◽  
Yiheng Liao ◽  
Xinxin Zhan ◽  
...  
Keyword(s):  
Early Stage ◽  
Contact Rate ◽  
Hard Tissue ◽  
Tissue Slices ◽  
Bone Implant ◽  
P Elements ◽  
Low Elastic Modulus ◽  
Bone Implant Contact

Ti–24Nb–4Zr–8Sn (Ti2448) alloys, with a relatively low elastic modulus and unique mechanical properties, are desirable materials for oral implantation. In the current study, a multifaceted strontium-incorporating nanotube coating was fabricated on a Ti2448 alloy (Ti2-NTSr) through anodization and hydrothermal procedures. In vitro, the Ti2-NTSr specimens demonstrated better osteogenic properties and more favorable osteoimmunomodulatory abilities. Moreover, macrophages on Ti2-NTSr specimens could improve the recruitment and osteogenic differentiation of osteoblasts. In vivo, dense clots with highly branched, thin fibrins and small pores existed on the Ti2-NTSr implant in the early stage after surgery. Analysis of the deposition of Ca and P elements, hard tissue slices and the bone-implant contact rate (BIC%) of the Ti2-NTSr implants also showed superior osseointegration. Taken together, these results demonstrate that the Ti2-NTSr coating may maximize the clinical outcomes of Ti2448 alloys for implantation applications.

scholarly journals In VivoMicroCT Monitoring of Osteomyelitis in a Rat Model

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Vincent A. Stadelmann ◽  
Inga Potapova ◽  
Karin Camenisch ◽  
Dirk Nehrbass ◽  
R. Geoff Richards ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Orthopedic Implants ◽  
Surgical Removal ◽  
Element Analysis ◽  
Bone Implant ◽  
Bone Implant Contact ◽  
Bone Changes ◽  
Bone Fraction ◽  
Microct Imaging

Infection associated with orthopedic implants often results in bone loss and requires surgical removal of the implant. The aim of this study was to evaluate morphological changes of bone adjacent to a bacteria-colonized implant, with the aim of identifying temporal patterns that are characteristic of infection. In anin vivostudy with rats, bone changes were assessed usingin vivomicroCT at 7 time points during a one-month postoperative period. The rats received either a sterile orStaphylococcus aureus-colonized polyetheretherketone screw in the tibia. Bone-implant contact, bone fraction, and bone changes (quiescent, resorbed, and new bone) were calculated from consecutive scans and validated against histomorphometry. The screw pullout strength was estimated from FE models and the results were validated against mechanical testing. In the sterile group, bone-implant contact, bone fraction, and mechanical fixation increased steadily until day 14 and then plateaued. In the infected group, they decreased rapidly. Bone formation was reduced while resorption was increased, with maximum effects observed within 6 days. In summary, the model presented is capable of evaluating the patterns of bone changes due to implant-related infections. The combined use of longitudinalin vivomicroCT imaging and image-based finite element analysis provides characteristic signs of infection within 6 days.

scholarly journals Anodisation Increases Integration of Unloaded Titanium Implants in Sheep Mandible

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Warwick J. Duncan ◽  
Min-Ho Lee ◽  
Tae-Sung Bae ◽  
Sook-Jeong Lee ◽  
Jennifer Gay ◽  
...  
Keyword(s):  
Titanium Implant ◽  
Titanium Implants ◽  
Implant Stability ◽  
Bone Implant ◽  
Implant Stability Quotient ◽  
Phosphate Ions ◽  
Surface Control ◽  
Bone Implant Contact ◽  
The Subject ◽  
Clinically Significant

Spark discharge anodic oxidation forms porous TiO2films on titanium implant surfaces. This increases surface roughness and concentration of calcium and phosphate ions and may enhance early osseointegration. To test this, forty 3.75 mm × 13 mm titanium implants (Megagen, Korea) were placed into healed mandibular postextraction ridges of 10 sheep. There were 10 implants per group: RBM surface (control), RBM + anodised, RBM + anodised + fluoride, and titanium alloy + anodised surface. Resonant frequency analysis (RFA) was measured in implant stability quotient (ISQ) at surgery and at sacrifice after 1-month unloaded healing. Mean bone-implant contact (% BIC) was measured in undemineralised ground sections for the best three consecutive threads. One of 40 implants showed evidence of failure. RFA differed between groups at surgery but not after 1 month. RFA values increased nonsignificantly for all implants after 1 month, except for controls. There was a marked difference in BIC after 1-month healing, with higher values for alloy implants, followed by anodised + fluoride and anodised implants. Anodisation increased early osseointegration of rough-surfaced implants by 50–80%. RFA testing lacked sufficient resolution to detect this improvement. Whether this gain in early bone-implant contact is clinically significant is the subject of future experiments.

Three-dimensional analysis of peri-bone–implant contact of rough-surface miniscrew implants

2011 ◽  
Vol 139 (2) ◽  
pp. e153-e163 ◽  
Author(s):  
Hedeki Ikeda ◽  
P. Emile Rossouw ◽  
Phillip M. Campbell ◽  
Elias Kontogirogos ◽  
Peter H. Buschang
Keyword(s):  
Rough Surface ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Bone Implant ◽  
Miniscrew Implants ◽  
Bone Implant Contact

scholarly journals Bone-Implant Contact around Crestal and Subcrestal Dental Implants Submitted to Immediate and Conventional Loading

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Ana Emília Farias Pontes ◽  
Fernando Salimon Ribeiro ◽  
Giovanna Iezzi ◽  
Juliana Rico Pires ◽  
Elizangela Partata Zuza ◽  
...  
Keyword(s):  
Dental Implants ◽  
Bone Implant ◽  
Anova Test ◽  
Edentulous Mandible ◽  
Bone Implant Contact ◽  
Bone Level

The present study aims to evaluate the influence of apicocoronal position and immediate and conventional loading in the percentage of bone-implant contact (BIC). Thus, 36 implants were inserted in the edentulous mandible from six dogs. Three implants were installed in each hemimandible, in different positions in relation to the ridge: Bone Level (at crestal bone level), Minus 1 (one millimeter apical to crestal bone), and Minus 2 (two millimeters apical to crestal bone). In addition, each hemimandible was submitted to a loading protocol: immediate (prosthesis installed 24 hours after implantation) or conventional (prosthesis installed 120 days after implantation). Ninety days after, animals were killed, and implant and adjacent tissues were prepared for histometric analysis. BIC values from immediate loaded implants were 58.7%, 57.7%, and 51.1%, respectively, while conventional loaded implants were 61.8%, 53.8%, and 68.4%. Differences statistically significant were not observed among groups (P=0.10, ANOVA test). These findings suggest that different apicocoronal positioning and loading protocols evaluated did not interfere in the percentage of bone-implant contact, suggesting that these procedures did not jeopardize osseointegration.

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