Dental radiographs and dental caries: a challenge
Article Abstract:
X rays may not reveal the true extent of cavities. Researchers compared the cavity depth on 18 extracted teeth with demineralized areas or cavities visible on the surface by measuring X rays taken of them and then cutting them in half to measure the actual extent of the cavity. The true depth ranged from 110% to 740% deeper and averaged 223% deeper than X ray measurements. This is a potential problem in patients who do not make regular visits and with insurance companies that refuse to cover filling cavities that appear small on X rays. To provide optimum care, dentists should evaluate X rays carefully, change developing solutions frequently, position films carefully in the mouth, X ray patients prone to cavities every six months, visually examine teeth after cleaning, use light to illuminate teeth as an additional technique, and advise patients that X rays may fail to reveal cavity extent.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1996
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A new challenge - root caries in mature people
Article Abstract:
Treatment of cavities on tooth roots poses several challenges. Tooth root cavities are a growing problem as more elderly people retain their teeth but experience gum recession that exposes tooth roots. Root cavities may be missed on examination because they do not discolor the tooth surface. Dyes that indicate decay can help determine the extent of needed repair. The material used to repair the tooth must be easy to handle and help prevent cavities. Access for repair is difficult and because tooth root surfaces are made of dentin, not enamel, it is more vulnerable to decay. Amalgam, the standard material, bonds poorly to dentin, is unsightly, and has no cavity preventative properties. Resin-modified glass ionomer, introduced a few years ago, is easy to handle, bonds well, releases flouride to prevent cavities, gives good cosmetic results, and has adequate strength and wear properties.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1996
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Cavity preparation: cutting or abrasion?
Article Abstract:
Air abrasion may supplement traditional tooth cutting in preparing teeth for filling cavities. Traditional tooth cutting employs rotary instruments coated with diamond or metal burs to remove diseased tooth structure. All dentists are familiar with this method. Patients may not like it because it is too noisy or causes pain. Air abrasion uses aluminum oxide to remove diseased tooth and is quieter than traditional methods. Air abrasion may be especially useful for children and patients who cannot tolerate anesthesia. Crowns and other large areas of teeth cannot be cut with air abrasion.
Publication Name: Journal of the American Dental Association
Subject: Health
ISSN: 0002-8177
Year: 1996
User Contributions:
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