Tissue reaction to bone plates made of pure titanium: a prospective, quantitative clinical study

1995 ◽  
Vol 6 (4) ◽  
pp. 223-229 ◽  
Author(s):  
A. Ungersboeck ◽  
V. Geret ◽  
O. Pohler ◽  
M. Schuetz ◽  
W. Wuest
Keyword(s):  
Clinical Study ◽  
Pure Titanium ◽  
Tissue Reaction ◽  
Bone Plates

Anatomical Results with Titanium Implants in the Mastoid Region

1997 ◽  
Vol 76 (4) ◽  
pp. 231-236 ◽  
Author(s):  
D. Portmann ◽  
P. Boudard ◽  
D. Herman
Keyword(s):  
Soft Tissue ◽  
Pure Titanium ◽  
Tissue Reaction ◽  
Titanium Implants ◽  
Skin Reactions ◽  
Aural Rehabilitation ◽  
Bone Anchored Hearing Aid ◽  
Surgical Implantation ◽  
Mastoid Region

We report our experience with titanium implants for extra-aural rehabilitation in the mastoid region with a bone-anchored hearing aid (BAHA) and auricular prosthesis. The purpose of this study was to evaluate the clnical status of the soft tissue adjacent to 63 skin-penetrating devices in 43 patients and to compare our findings with those of other reports. Forty-four fixtures have been implanted in 36 patients for the BAHA and 19 in seven patients for the auricular prostheses. The evaluation concerns osseointegration, pain in the mastoid area, skin reaction around the abutment and removal of the abutment. Three implants extruded; one due to trauma and two with no explanation. Follow-up ranged from 3 to 60 months after surgical implantation. The first outpatient check-up was performed at three months after implantation and then every six months. The soft tissue reaction around the percutaneous unit was classified at each control according to the classification proposed by Holgers et al.1 There was no irritation (type 0) in 87.5% of the controls for the BAHA group and in 87.2% for the group of auricular prostheses. No adverse skin reactions were noted in 61.36% of the BAHA group and in 66.66% of the auricular prosthesis group. Results of this study confirm the skin's ability to tolerate a skin-penetrating unit made of pure titanium. The importance of reducing the thickness of the skin around the implant and of local hygienic conditions is emphasized.

How Do Absorbable Sutures Absorb? A Prospective Double-Blind Randomized Clinical Study of Tissue Reaction to Polyglactin 910 Sutures in Human Skin

Orbit ◽  
2014 ◽  
Vol 33 (6) ◽  
pp. 437-443 ◽  
Author(s):  
Barry T. Cartmill ◽  
David M. Parham ◽  
Paul W. Strike ◽  
Liz Griffiths ◽  
Ben Parkin
Keyword(s):  
Clinical Study ◽  
Human Skin ◽  
Tissue Reaction ◽  
Polyglactin 910 ◽  
Double Blind ◽  
Randomized Clinical Study ◽  
Absorbable Sutures

Grain Refinement in Titanium-Erbium Alloys

1974 ◽  
Vol 32 ◽  
pp. 522-523
Author(s):  
B. B. Rath ◽  
J. E. O'Neal ◽  
R. J. Lederich
Keyword(s):  
Electron Microscopy ◽  
Size Distribution ◽  
Grain Refinement ◽  
Grain Growth ◽  
Volume Fraction ◽  
Pure Titanium ◽  
Systematic Investigation ◽  
Second Phase ◽  
Titanium Matrix ◽  
Average Size

Addition of small amounts of erbium has a profound effect on recrystallization and grain growth in titanium. Erbium, because of its negligible solubility in titanium, precipitates in the titanium matrix as a finely dispersed second phase. The presence of this phase, depending on its average size, distribution, and volume fraction in titanium, strongly inhibits the migration of grain boundaries during recrystallization and grain growth, and thus produces ultimate grains of sub-micrometer dimensions. A systematic investigation has been conducted to study the isothermal grain growth in electrolytically pure titanium and titanium-erbium alloys (Er concentration ranging from 0-0.3 at.%) over the temperature range of 450 to 850°C by electron microscopy.

Nuclear Reactions in Deuterium Titanium

1990 ◽  
Vol 48 (2) ◽  
pp. 134-135
Author(s):  
D.M. Vanderwalker
Keyword(s):  
Nuclear Reactions ◽  
Ion Beam ◽  
Exothermic Reaction ◽  
Pure Titanium ◽  
Fundamental Interest ◽  
Transmission Electron ◽  
Iodide Titanium ◽  
A Cell ◽  
After Hours ◽  
Quantity Of Heat

There is a fundamental interest in electrochemical fusion of deuterium in palladium and titanium since its supposed discovery by Fleischmann and Pons. Their calorimetric experiments reveal that a large quantity of heat is released by Pd after hours in a cell, suggesting fusion occurs. They cannot explain fusion by force arguments, nor can it be an exothermic reaction on the formation of deuterides because a smaller quantity of heat is released. This study examines reactions of deuterium in titanium.Both iodide titanium and 99% pure titanium samples were encapsulated in vacuum tubes, annealed for 2h at 800 °C. The Ti foils were charged with deuterium in a D2SO4 D2O solution at a potential of .45V with respect to a calomel reference junction. Samples were ion beam thinned for transmission electron microscopy. The TEM was performed on the JEOL 200CX.The structure of D charged titanium is α-Ti with hexagonal and fee deuterides.

Techniques For The Preparation of Tissue Samples Containing Injectable Polymer Microcapsules

1985 ◽  
Vol 43 ◽  
pp. 710-711
Author(s):  
G.E. Visscher ◽  
R. L. Robison ◽  
G. J. Argentieri
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Gastrocnemius Muscle ◽  
Degradation Process ◽  
Delivery Systems ◽  
Tissue Reaction ◽  
Electron Microscopic ◽  
Tissue Samples ◽  
Injectable Polymer ◽  
Microscopic Techniques

The use of various bioerodable polymers as drug delivery systems has gained considerable interest in recent years. Among some of the shapes used as delivery systems are films, rods and microcapsules. The work presented here will deal with the techniques we have utilized for the analysis of the tissue reaction to and actual biodegradation of injectable microcapsules. This work has utilized light microscopic (LM), transmission (TEM) and scanning (SEM) electron microscopic techniques. The design of our studies has utilized methodology that would; 1. best characterize the actual degradation process without artifacts introduced by fixation procedures and 2. allow for reproducible results.In our studies, the gastrocnemius muscle of the rat was chosen as the injection site. Prior to the injection of microcapsules the skin above the sites was shaved and tattooed for later recognition and recovery. 1.0 cc syringes were loaded with the desired quantity of microcapsules and the vehicle (0.5% hydroxypropylmethycellulose) drawn up. The syringes were agitated to suspend the microcapsules in the injection vehicle.

A Clinical Study of Twenty-seven Children Exhibiting Functional Hearing Loss

1981 ◽  
Vol 12 (1) ◽  
pp. 26-35 ◽  
Author(s):  
Donald L. McCanna ◽  
Giacinto DeLapa
Keyword(s):  
Hearing Loss ◽  
Clinical Study ◽  
Early Identification ◽  
Behavioral Responses ◽  
Upper Elementary ◽  
Elementary Grades ◽  
Ability Level ◽  
Hearing Problem

This report reviews 27 cases of children exhibiting functional hearing loss. The study reveals that most students were in the upper elementary grades and were predominantly females. These subjects were functioning below their ability level in school and were usually in conflict with school, home, or peers. Tests used were selected on the basis of their helping to provide early identification. The subjects' oral and behavioral responses are presented, as well as ways of resolving the hearing problem. Some helpful counseling techniques are also presented.

Sign in / Sign up

Export Citation Format

Share Document