scholarly journals In Vitro Study Regarding the Biomechanical Behaviour of Bone, Fibre Reinforced Polymer and Wire Composite Perio-dontal Splints. Model Analysis

2020 ◽  
Vol 57 (1) ◽  
pp. 253-262
Author(s):  
Raluca Maria Vieriu ◽  
Oana Taculescu ◽  
florentina Mocanu ◽  
Sorina Mihaela Solomon ◽  
Carmen Savin ◽  
...  
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Normal Height ◽  
Mandibular Bone ◽  
Load Distributions ◽  
Polyethylene Fiber ◽  
Bone Strains ◽  
Fibre Reinforced Polymer ◽  
Bone Condition

This paper is the second part of a study regarding the biomechanical behaviour of mandibular bone in the context of different periodontal splinting systems, occlusal forces and load distributions. Electric resistive tensometry method was used to measure the strains developed in mandibular bone replica. The tests were carried out on six mandibular acrylic models, each with 8 natural teeth. The experimental groups were defined corresponding to the bone condition and splint type: normal height bone; bone resorption without splint; bone resorption and wire-composite splint; bone resorption and polyethylene fiber-reinforced composite splint. Each sample was subjected to three similar loading cycles, the force being applied successively on four incisors, two central incisors and canines, and the specific deformation values were read for four loading forces: 30 N, 50 N, 100 N and 150 N. In case of bone loss, the bone deformations are up to 110%. Periodontal splinting redistribute forces, reducing incisors bone strains associated with a slight increase in canine bone strains.

scholarly journals In Vitro Study Regarding the Biomechanical Behaviour of Bone and Periodontal Splints I.Model validation

2019 ◽  
Vol 56 (4) ◽  
pp. 1013-1020
Author(s):  
Raluca Maria Vieriu ◽  
Oana Tanculescu ◽  
Florentina Mocanu ◽  
Sorina Mihaela Solomon ◽  
ioan Gabriel Sandu ◽  
...  
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Dental Arch ◽  
Bone Strain ◽  
Arch Model ◽  
Mandibular Bone ◽  
Different Types ◽  
The Subject ◽  
Two Stages

This paper is part of a larger study that aims to evaluate the biomechanical behaviour of mandibular bone and periodontal splinting systems subjected to different occlusal forces by means of electric resistive tensometry (ERT). The research was based on the following premise: the degree of bone resorption and periodontal type of splint influence the deformation of the mandibular bone. The study was conducted in two stages: first, the validation of the mandibular dental arch model, which is the subject of the present article, and second, the evaluation of mandibular bone strain in case of different types of bone loss and periodontal splints, which is the subject of a second article.

Titanium induced osteoclast recruitment and activation resulting in enhanced bone resorption: A human in vitro study

2008 ◽  
Vol 207 (3) ◽  
pp. S51 ◽  
Author(s):  
Dieter Cadosch ◽  
E. Chan ◽  
O.P. Gautschi ◽  
L. Filgueira ◽  
R. Zellweger
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Vitro Study

Comparison of height and width measurements of mandibular bone in various head orientations using cone beam computed tomography: an experimental in vitro study

2014 ◽  
Vol 31 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Zahra Dalili Kajan ◽  
Hamid Neshandar Asli ◽  
Mehran Taramsari ◽  
Seyed Mokhtar Fallah Chai ◽  
Yasamin Babaei Hemmaty
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Mandibular Bone ◽  
Width Measurements

Analyses of bone resorption around cementless hip prostheses — in vivo and in vitro study —

1994 ◽  
Vol 1 ◽  
pp. 282
Author(s):  
KJ. Kim ◽  
T. Itoh ◽  
M. Kumegawa ◽  
HE. Rubash
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Vitro Study ◽  
Hip Prostheses

scholarly journals Evaluation of Fracture Resistance of Reattached Vertical Fragments Bonded with Fiber-reinforced Composites: An in vitro Study

2013 ◽  
Vol 14 (4) ◽  
pp. 573-577 ◽  
Author(s):  
S Sujatha Gopal ◽  
B Shiva Kumar ◽  
P Spoorti ◽  
Jeetender Reddy ◽  
Jayaprakash Ittigi
Keyword(s):  
Fracture Resistance ◽  
In Vitro Study ◽  
Resin Cement ◽  
Vitro Study ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Polyethylene Fiber ◽  
Significant Difference

ABSTRACT Aim Aim of this in vitro study was to evaluate the resistance to fracture of vertically fractured and reattached fragments bonded with fiber-reinforced composites. Materials and methods Root canals of 45 teeth were prepared, and the teeth were intentionally fractured into two separate fragments. Control groups (n = 15 each) consisted unfractured teeth with instrumented and obturated. Fractured teeth were divided into three groups (n = 15) and were attached using (1) dual-cure resin cement (RelyX U100), (2) dual-cure resin cement and polyethylene fiber (Ribbond), (3) dual-cure resin cement and glass fibers (stick-net). Force was applied at a speed of 0.5 mm/min to the root until fracture. Results and statistical analysis Group 1 (RelyX U100 group) demonstrated lowest fracture resistance. Group 4 (control group) showed highest fracture resistance followed by group 2 (Ribbond group) and group 3 (Stick-Net groups). Statistically no significant difference was there between groups 2, 3 and 4. Conclusion Vertically fractured teeth can be treated by filling the root canal space with dual-cure adhesive resin cement or by adding polyethylene fiber or glass fiber to increase the fracture resistance of the reattached tooth fragments, an alternative to extraction. How to cite this article Kumar BS, Spoorti P, Reddy J, Bhandi S, Gopal SS, Ittigi J. Evaluation of Fracture Resistance of Reattached Vertical Fragments Bonded with Fiber-reinforced Composites: An in vitro Study. J Contemp Dent Pract 2013;14(4):573-577.

scholarly journals Endonuclease increases efficiency of osteoblast isolation from murine calvariae

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yosuke Asano ◽  
Yoshinori Matsumoto ◽  
Jose La Rose ◽  
Fang He ◽  
Takayuki Katsuyama ◽  
...  
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Genetically Engineered ◽  
Vitro Study ◽  
In Vitro Experiments ◽  
Isolated Cells ◽  
Cellular Identity ◽  
And Function ◽  
Number Of Cells

AbstractBone is a highly dynamic organ that undergoes remodeling equally regulated by osteoblast-mediated bone formation and osteoclast-mediated bone resorption. To clarify the regulation of osteoblastogenesis, primary murine osteoblasts are required for an in vitro study. Primary osteoblasts are isolated from neonatal calvariae through digestion with collagenase. However, the number of cells collected from one pup is not sufficient for further in vitro experiments, leading to an increase in the use of euthanized pups. We hypothesized that the viscosity of digested calvariae and digestion solution supplemented with collagenase results in cell clumping and reduction of isolated cells from bones. We simply added Benzonase, a genetically engineered endonuclease that shears all forms of DNAs/RNAs, in order to reduce nucleic acid-mediated viscosity. We found that addition of Benzonase increased the number of collected osteoblasts by three fold compared to that without Benzonase through reduction of viscosity. Additionally, Benzonase has no effect on cellular identity and function. The new osteoblast isolation protocol with Benzonase minimizes the number of neonatal pups required for an in vitro study and expands the concept that isolation of other populations of cells including osteocytes that are difficult to be purified could be modified by Benzonase.

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