scholarly journals Histological Investigation on Chronological Changes in Nerve Fibers and Bone Tissue around Oral Implants under Functional Loading

2000 ◽  
Vol 54 (6) ◽  
pp. 551-564 ◽  
Author(s):  
Shin Wada
Keyword(s):  
Bone Tissue ◽  
Nerve Fibers ◽  
Histological Investigation ◽  
Oral Implants ◽  
Functional Loading

Effect of loading on the development of nerve fibers around oral implants in the dog mandible

2001 ◽  
Vol 12 (3) ◽  
pp. 219-224 ◽  
Author(s):  
Shin Wada ◽  
Tatsuro Kojo ◽  
Yi-Huei Wang ◽  
Hironobu Ando ◽  
Yasunari Uchida ◽  
...  
Keyword(s):  
Nerve Fibers ◽  
Oral Implants

scholarly journals Some Morphological and Functional Aspects of Chronic Osteomyelitis in Patients with Neurogenic Foot Deformities

2019 ◽  
Vol 25 (2) ◽  
pp. 102-110
Author(s):  
A. S. Sudnitsyn ◽  
E. N. Shchurova ◽  
T. N. Varsegova ◽  
T. A. Stupina ◽  
N. S. Migalkin
Keyword(s):  
Blood Flow ◽  
Spina Bifida ◽  
Bone Formation ◽  
Bone Tissue ◽  
Pain Sensitivity ◽  
Chronic Osteomyelitis ◽  
Nerve Fibers ◽  
Foot Deformities ◽  
Functional Aspects ◽  
Morphological Picture

Relevance. Neurological disorders are one the most frequent cause for developing of chronic foot inflammation. Analysis of pathological picture of chronic osteomyelitis in patients with neurogenic foot deformities, including cases of spina bifida, is not adequately addressed.Purpose of the study — to examine morpho-functional aspects of chronic osteomyelitis in patients with multicomponent foot deformities and with spina bifida.Materials and Methods. The present paper is based on the study of 30 patients with multicomponent neurological foot deformities complicated by chronic osteomyelitis who had medical history of spina bifida (myelomeningocele type). Histology was used to examine resected fragments of affected bone tissue, bone sequestration and skin adjacent to osteomyelitis area. Laser doppler flowmetry was used to study capillary cutaneous blood flow on plantar foot surface. Thermal and pain sensitivity was assessed by electric sensimeter in L4, L5, S1 dermatomas on the right and on the left sides.Results. Biopsy skin specimens harvested at osteomyelitis area demonstrated signs of parakeratosis, absence of stratum lucidum, epidermis acanthosis with 25% thickness increase (р = 0,04), 2,2 times increase of density for microvessels of the dermis (р = 0,73Е-4) and increased rate of capillary blood flow at 81,6±14,2% (р = 0,0004), fibrosis and dermis thinning at 19,1% (р = 0,03), 1,37 times increase in bulk density of perspiratory glands (р= 0,04), loss of adipose tissue and degeneration of nerve fibers in the majority of nerve stems of the dermis. Above factors were accompanied by disorders in thermal and pain sensitivity in 100% of cases and in 29% of those sensitivity was missing. Morphological picture of bone tissue in osteomyelitic area was manifested by multiple destruction cavities with pyogenic membrane, granular tissue of varying maturity, combined chronic and acute stages of the process, and by poor restorative bone formation.Conclusion. Disorders or lack of thermal and pain sensitivity in dermatomas L4, L5, S1, of safety sense and motion control, resulting chronic load on atypical foot segments, as well as patho-histological skin alterations contribute to ulcer formation and osteomyelitis in patients with spina bifida and multicomponent foot deformities. Morphological picture of foot bony tissue at osteomyelitic site indicates typical patho-morphological signs of chronic inflammation with poor restorative bone formation.

scholarly journals Histological Investigation on Chronological Changes in Peri-implant Tissues, with Special Reference to Responses of Nerve Fibers to Implantation.

1993 ◽  
Vol 37 (1) ◽  
pp. 144-158 ◽  
Author(s):  
Masahito Sawada ◽  
Haruka Kusakari ◽  
Osamu Sato ◽  
Takeyasu Maeda ◽  
Yoshiro Takano
Keyword(s):  
Special Reference ◽  
Nerve Fibers ◽  
Histological Investigation

The Use of Microfocus Computerized Tomography as a New Technique for Characterizing Bone Tissue Around Oral Implants

2000 ◽  
Vol 26 (1) ◽  
pp. 5-12 ◽  
Author(s):  
H. Van Oosterwyck ◽  
J. Duyck ◽  
J. Vander Sloten ◽  
G. Vander Perre ◽  
J. Jansen ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Computerized Tomography ◽  
New Technique ◽  
Oral Implants ◽  
A New Technique

Some Biological Applications of High Voltage Electron Microscopy

1974 ◽  
Vol 32 ◽  
pp. 298-299
Author(s):  
Hans Ris
Keyword(s):  
High Voltage ◽  
Chromosome Structure ◽  
Nerve Fibers ◽  
Good Resolution ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
University Of Wisconsin ◽  
High Voltage Electron ◽  
One Year ◽  
The University

The High Voltage Electron Microscope Laboratory at the University of Wisconsin has been in operation a little over one year. I would like to give a progress report about our experience with this new technique. The achievement of good resolution with thick specimens has been mainly exploited so far. A cold stage which will allow us to look at frozen specimens and a hydration stage are now being installed in our microscope. This will soon make it possible to study undehydrated specimens, a particularly exciting application of the high voltage microscope.Some of the problems studied at the Madison facility are: Structure of kinetoplast and flagella in trypanosomes (J. Paulin, U. of Georgia); growth cones of nerve fibers (R. Hannah, U. of Georgia Medical School); spiny dendrites in cerebellum of mouse (Scott and Guillery, Anatomy, U. of Wis.); spindle of baker's yeast (Joan Peterson, Madison) spindle of Haemanthus (A. Bajer, U. of Oregon, Eugene) chromosome structure (Hans Ris, U. of Wisconsin, Madison). Dr. Paulin and Dr. Hanna are reporting their work separately at this meeting and I shall therefore not discuss it here.

Fine Structure of Planarian Neuroglial Cell

1976 ◽  
Vol 34 ◽  
pp. 188-189 ◽  
Author(s):  
Michio Morita ◽  
Jay Boyd Best
Keyword(s):  
Endoplasmic Reticulum ◽  
Ventral Nerve Cord ◽  
Osmium Tetroxide ◽  
Golgi Body ◽  
Nerve Fibers ◽  
Neuroglial Cell ◽  
Glutaraldehyde Solution ◽  
Deep Indentation ◽  
Cytoplasmic Processes ◽  
Longitudinal Nerve

The species of the planarian Dugesia dorotocephala was used as the experimental animal to study a neuroglial cell in the ventral nerve cord. Animals were fixed with 3% buffered glutaraldehyde solution and postfixed with 1% buffered osmium tetroxide.The neuroglial cell is multipolar, expanding into three or four cytoplasmic processes with many daughter branches. Some neuroglial processes are found to extend perpendicular to the longitudinal nerve fibers, whereas others are seen to be parallel to them. The nucleus of the neuroglial cell is irregular in shape and frequently has a deep indentation. Convex portions of the nucleus seem to be related to the areas from which cytoplasmic processes are extended. Granular endoplasmic reticulum (Fig. 4), Golgi body (Fig. 2), mitochondria (Figs. 1 and 2), microtubules (Fig. 4), and many glycogen granules are observable in the electron dense neuroglial cytoplasm. Neuroglial cells are also observed to contain various sizes of phagosomes and lipids (Fig. 2).

Sign in / Sign up

Export Citation Format

Share Document