Preserving the maxillary anterior alveolar ridge contour using hydroxylapatite

Article Abstract:

Chronic infection can destroy much of the alveolar bone (tooth socket), making it difficult to achieve an attractive restoration. The treatment process may also be time-consuming, involving extraction of the tooth, followed by several appointments to design and construct the interim appliance. A method is described which can reduce the total treatment time. In one appointment, the tooth is extracted, a porous graft of hydroxylapatite granules is applied to the gum, and the acid-etched crown is put on top. The hydroxylapatite granules are used to fill in the osseous (bony) defect, and a surgical dressing is placed over the graft site; then the temporary crown is bonded in place. Two cases are described; after approximately 10 weeks in one case, the wound had healed adequately and permanent prosthetic treatment was begun. After one year, bone regrowth was shown on X-rays. The clinical advantages of this approach are that the hydroxylapatite preserves the natural alveolar ridge, which improves the appearance of the restoration, and it also prevents the collapse of the gum tissue. Antibiotics are routinely given after the procedure, and since a delayed infection is possible, these patients should be examined regularly for several years after the hydroxylapatite graft. The procedure described can be considered an alternative to soft tissue, osseous, or synthetic grafting; it is appropriate in some, but not all patients. (Consumer Summary produced by Reliance Medical Information, Inc.)

Methods, Dentistry, Fillings (Dentistry), Dental fillings

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Assessing the effectiveness of direct digital radiography barrier sheaths and finger cots

Article Abstract:

Direct digital radiography (DDR) sensors should be covered with two sheaths, one made of plastic and one of latex over that. DDR uses a sensor that is placed in the patient's mouth. However, the sensor cannot be sterilized in between patients. Most are covered with a plastic sheath or a plastic sheath and a latex sheath. In a study of 400 sensors covered only with plastic sheaths, about half were perforated after a single X-ray exposure. Only 6% of those covered with plastic and latex were perforated.

Biosensors, Maintenance and repair, Radiography, Medical, Medical radiography

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Foreign body reaction to calcium hydroxylapatite after lip augmentation

Article Abstract:

A 51-year-old woman had a lump on the mucosal aspect of her lower lip on the left side. The lesions were the result of a soft-tissue reaction to calcium hydroxylapatite (CaHA), an injectable filler that enhances the lips cosmetically.

United States, Health Care and Social Assistance, HEALTH SERVICES, Cosmetic Surgery, Complications and side effects, Diseases, Surgery, Plastic, Plastic surgery, Lips, Lip, Clinical report, Case study

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