Dental root

Shaw 0 has described the topical use of such a compound, neomycin hexakispentachlorophenate, in the treatment of dental root infection and periodontic cavities. 

In the past, minor releases may have resulted from the use of consumer products (e.g., certain air deodorizers and cleaning products) that contained chloroform as a component or residual product (Bayer et al. 1988 Wallace et al. 1987a). Chloroform is widely used in laboratory work as an extractant. It is also still used in certain medical procedures, such as dental root canal surgeries (McDonald and Vire 1992), and in combination with aspirin as an experimental treatment for serious cases of herpes zoster (King 1993). These medical uses are extremely limited and would contribute very minor amounts of chloroform as releases to the air. 

Ellen RP (1993) Ecological determinants of dental root surface caries. In Cariology for the nineties (eds. Bowen WH and Tabak LA), pp. 319-332. University of Rochester Press, Rochester NY, USA. 

The surface of the mother-of-pearl is somewhat permeable for human cells and consequently these cells can form a strong bond between the mother-of-pearl and the bone. Mother-of-pearl is also used in the manufacture of artificial dental roots. These can be attached to the jaw much more firmly than any metal whatsoever. It is thought that mother-of-pearl contains certain natural substances which accelerate the production of human bone. 

In 1931 Brill published the article Uber die Implantation von Porzellan Wurzeln (On the transplanting of procelain dental roots) and which was followed in 1934 by Abel s Die Befestigung implantierten Porzellanzahnersatzes mittel Wiplakieferschrauben (Attaching porcelain teeth by means of Wipla jaw screws). 

Many articles have been written on the demand for implants. It is difficult to estimate the market. The most popular implants are likely to be hip, knee, finger, dental root, heart valve, pacemakers and jaw reinforcement. Worldwide the demand is 100,000 heart valves, 220,000 pacemakers, 400,000 hip prostheses and 1,500,000 blood vessel prostheses. 

Denissen, H.W. and de Groot, K. (1979) Immediate dental root implants from synthetic dense calcium hydroxylapatite. /. Prosth. Dent., 42 (5), 551-556. 

Ceramics Alumina Femoral balls, inserts of acetabular cups, artificial heart valves, dental roots, bone screws, endoscope Bioinert Heness and Ben-Nissan (2004)... 

Fully densified bodies of hydroxylapatite have been employed for reconstruction of the middle ear (Shinohara et al. 2000), dental root implants (Ogiso 1998) and skull reconstruction (Koyama et al. 2000). 

Alumina Aluminum oxide (AI2O3) which is very hard (Mohs hardness is 9) and strong. Single crystals are called sapphire or ruby depending on color. Alumina is used to fabricate hip joint socket components or dental root implants. 

Schepers E., Ducheyne R, and De Clercq M. 1989. Interfacial analysis of fiber-reinforced bioactive dental root implants. /. Biomed. Mater. Res. 23 735-752. 

Schepers E., De Clercq M and Ducheyne P. 1988. Interfacial behavior of bulk bioactive glass and fiber-reinforced bioactive glass dental root implants. Ann. NY Acad. Set. 523 178-189. 

Dental root treatment commonly comprises removal of the necrotic pulp or its remnants, cleaning, widening, and sterilization of the root canal, and filling of the prepared canal with core and sealing materials. Popular core materials are silver, gutta-percha, and silicon rubber points, and these are sealed in place by a cement sealer. 

Schepers, E., Ducheyne, P., De Clercq, M., Interfacial Analysis of Fibre-Reinforced Bioactive Glass Dental Root Implants, J. Biomed. Mat. Res. 23 (1989) 735—752. 

Yaffe, A., Ehrlich, J. and Sho.shan, S. (1982) One-year follow-up for the use of collagen for biological anchoring of acrylic dental roots in dogs. Archs. Oral Biol, 27, 999-1001. 

The adhesion of cells is important in many biomedical applications, for example for hip or dental root implants. A successful integration of these implants requires that bone cells adhere to the implant surface and proliferate. It is therefore important to understand the adhesion and proliferation of cells on surfaces with different properties, e.g. wettability or roughness. Different types of graxlients, wettability, polymer-chain density, protein and morphology gradients, have therefore been used to study cell adhesion. 

In addition to these applications, the material was also tested for use as a dental root substitute (Pinkert 1990). 

To date, metal root posts predominantly have been used to restore nonvital teeth. In the process, the dentist prepares the dental root canal and cements a metal post in the tooth. On this post, the tooth is restored with an organic composite or a ceramic material. 

Fig. 13.13a-c. Image a and b mandibular fracture image C dental root fracture... 

Other uses are as superconductive materials of TiNb, the shape memory alloy of Ti-Ni, the hydrogen occlusion alloy of Ti—Fe, and in computer equipment as nonmagnetic substance, artificial bones, dental roots, cardiac valves and cardiac pacemakers as nontoxic and biocompatible materials [3,5]. 

Appiications use in more than 40,000 products ablatives, aircraft tires, dental (root filling material), electrochemical cell components, pressure-sensitive adhesives, and many more ... 

Metals (Ti and its alloys, Co-Cr alloys, stainless steels, Au, Ag, Pt, etc.) Strong, tough, ductile May corrode Dense Difficult to make Joint replacements, bone plates and screws, dental root implants, pacer and suture wires... 

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