Detection of bone particles in non-carbonate soils

2021 ◽  
pp. 111091
Author(s):  
Angi M. Christensen ◽  
Ian S. Saginor
Keyword(s):  
Bone Particles

scholarly journals N-acetyl Cysteine Alleviates Cytotoxicity of Bone Substitute

2010 ◽  
Vol 89 (4) ◽  
pp. 411-416 ◽  
Author(s):  
M. Yamada ◽  
T. Ueno ◽  
H. Minamikawa ◽  
N. Sato ◽  
F. Iwasa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Bone Substitute ◽  
Bone Substitutes ◽  
Amino Acid Derivative ◽  
Bovine Bone ◽  
Intracellular Ros ◽  
Cytokine Levels ◽  
Acetyl Cysteine ◽  
And Function ◽  
Bone Particles

Lack of cytocompatibility in bone substitutes impairs healing in surrounding bone. Adverse biological events around biomaterials may be associated with oxidative stress. We hypothesized that a clinically used inorganic bone substitute is cytotoxic to osteoblasts due to oxidative stress and that N-acetyl cysteine (NAC), an antioxidant amino acid derivative, would detoxify such material. Only 20% of rat calvaria osteoblasts were viable when cultured on commercial deproteinized bovine bone particles for 24 hr, whereas this percentage doubled on bone substitute containing NAC. Intracellular ROS levels markedly increased on and under bone substitutes, which were reduced by prior addition of NAC to materials. NAC restored suppressed alkaline phosphatase activity in the bone substitute. Proinflammatory cytokine levels from human osteoblasts on the bone substitute decreased by one-third or more with addition of NAC. NAC alleviated cytotoxicity of the bone substitute to osteoblastic viability and function, implying enhanced bone regeneration around NAC-treated inorganic biomaterials.

Using seafood waste as sludge conditioners

2001 ◽  
Vol 44 (10) ◽  
pp. 301-307 ◽  
Author(s):  
D.Y. Lee ◽  
S.R. Jing ◽  
Y.F. Lin
Keyword(s):  
Ferric Chloride ◽  
Specific Resistance ◽  
Oyster Shell ◽  
Particle Sizes ◽  
Sludge Dewatering ◽  
Insignificant Effect ◽  
Shrimp Shell ◽  
Ph Decrease ◽  
Shell Particles ◽  
Bone Particles

In this study, three kinds of seafood wastes (shrimp shell particles, oyster shell particles, and internal bone particles of squid) were added to dewatered sludge preconditioned with chemical conditioner (alum or ferric chloride). The specific resistance of sludge dewatering was calculated to evaluate the effectiveness of sludge dewatering. The result showed that adding chemical conditioners alone caused noticeable pH decrease and resulted in a conditioned sludge with poor filterability. The addition of oyster shell or internal bone of squid to chemically preconditioned sludge efficiently improved sludge dewatering. This result was possibly due to both the availability of alkaline and the function as skeleton builder provided by these two waste solids. Particle sizes (0.59-2.0 mm) of oyster shell and internal bone of squid were found to have insignificant effect on sludge dewatering.

scholarly journals Comparison of the Bone Harvesting Capacity of an Intraoral Bone Harvesting Device and Three Different Implant Drills

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Hyun-Chang Lim ◽  
Kyung-In Ha ◽  
Ji-Youn Hong ◽  
Ji-Young Han ◽  
Seung-Il Shin ◽  
...  
Keyword(s):  
Particle Size ◽  
Dry Weight ◽  
Volumetric Measurement ◽  
Small Particles ◽  
Low Speed ◽  
Bone Particle ◽  
Bone Harvesting ◽  
Bone Particles

The aim of the present study was to compare bone-collecting capacity of bone harvesting device and minimally irrigated low-speed drilling using three implant systems. One bone harvesting device and three commercially available drill systems were compared using the osteotomies on bovine rib bones. The amount of the collected bone particle and particle size (<500 μm: small, 500–1000 μm: medium, and >1000 μm: large) were measured. Total wet (1.535±0.232 mL) and dry volume (1.147±0.425 mL) of the bone particles from bone harvesting device were significantly greater than three drill systems (wet volume: 1.225±0.187–1.27±0.29 mL and dry volume: 0.688±0.163–0.74±0.311 mL) (P<0.05). In all groups, the amount of large sized particles in wet and dry state was the greatest compared to that of medium and small particles. The dry weight of the bone particles showed the same tendency to volumetric measurement. In conclusion, total bone particles and large sized particles (>1000 μm) were harvested significantly greater by bone harvesting device than minimally irrigated low-speed drilling. The composition of particle size in all harvesting methods was similar to each other.

Substrate presoaking effect on immobilization of protease on pig bone particles

1990 ◽  
Vol 70 (5) ◽  
pp. 313-316 ◽  
Author(s):  
Satoshi Negishi ◽  
Seigo Sato ◽  
Sukekuni Mukataka ◽  
Joji Takahashi
Keyword(s):  
Bone Particles

Vertical Ridge Augmentation of Edentulous Posterior Inferior Jaw Using Lumina Bone Porous Large®: A Clinical Case Report

2021 ◽  
Author(s):  
Sergio Charifker Ribeiro Martins
Keyword(s):  
Clinical Case ◽  
Autogenous Bone ◽  
Bovine Bone ◽  
Success Rates ◽  
Hydroxy Apatite ◽  
Crystalline Materials ◽  
Ridge Augmentation ◽  
Versatile Technique ◽  
Implant Dentistry ◽  
Bone Particles

The use of guided bone regeneration (GBR) has been gaining more and more ground in the field of implant dentistry, due to higher confidence in the materials available. As this is a highly versatile technique, the same biological basis-cell exclusion–can be used to treat any type of defect. Vertical augmentation in the alveolar ridge is currently treated by the GBR principle, predictably and with high success rates, using a rigid framework associated with a mix of hydroxyapatite and autogenous bone. Lyophilized bovine bone is the hydroxyapatite of choice for this condition because it allows bone volume to be maintained over a long period of time, due to its slow resorption. Another important char-acteristic found in hydroxyapatite is its porosity since it allows – in addition to graft neo-vascularization–a greater ease of cell adhesion when compared to crystalline materials. Thus, this clinical case presents the use (for the first time in the literature) of a vertical augmentation of an atrophic ridge using Criteria Lumina Bone Porous® as the hydroxy-apatite of choice for association with autogenous bone particles.

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