Dental imaging by computer: a look at the future

Article Abstract:

Dentistry is no exception among the many fields where computers are assuming an increasingly important role. A brief review is presented of the uses for computers and imaging systems in dentistry. The most common use for computers is in record-keeping and billing. Other systems can help with diagnosis, performing bite analysis or recording periodontal data (concerning the health of gums and other supporting structures) automatically. Some computer systems can design a tooth restoration and deliver specifications to a milling machine which actually manufactures the desired product. Computerized dental imaging systems are used to demonstrate possible outcomes of dental procedures performed to improve the patient's appearance; the systems generate an enlarged image of the mouth, which the dentist and patient can discuss. Possible modifications can be modeled on the screen and evaluated, allowing the patient to develop an expectation of the treatment outcome. During treatment, the system documents progress. The main components of such a system are described: they include a central processing unit, keyboard, color monitor, video camera, graphics tablet, and hard-copy printer (optional). Since good illumination of the patient's mouth is essential, many systems include a lighting system. Specifications for each component are presented. The computer system will only be as effective as its software, and several packages are available. (Consumer Summary produced by Reliance Medical Information, Inc.)

Usage, Innovations, Dentistry, Mouth, Stomatognathic system, Imaging systems

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In vitro elution of leachable components from dental sealants

Article Abstract:

Dental sealants may not release estrogen-like chemicals into the saliva of dental patients, as had been previously reported. The sealants, which are used to fill pits and grooves in teeth, are composed of chemicals like bisphenol-A (BPA), which can mimic the female hormone and thus raise safety concerns. Samples of seven sealants were soaked in solvent for 4 minutes. Analysis of the solvent from each compound by liquid chromatography and mass spectroscopy detected no BPA, but other components were present. Study of their biologic effects may be useful.

Analysis, Cover Story, Pit and fissure sealants (Dentistry), Dental sealants

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Vital tooth bleaching: sensitivity and pulpal considerations

Article Abstract:

Tooth bleaching does not appear to result in lasting side effects when done properly. When vital tooth bleaching was first introduced in the 1970s, dentists performed the procedure in their offices using 25% to 35% hydrogen peroxide and heat. However, this caused considerable discomfort to many patients. Research has shown that bleaching agents can irritate tooth pulp, but the pulp appears to recover. Most home bleaching kits contain only 10% peroxide and do not involve heat. The most common side effect is transient tooth sensitivity.

Complications and side effects, Teeth, Bleaching materials, Tooth bleaching, Bleaches

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