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Supra-Gingival/Healthy Dentistry

If you want a healthier type of dentistry, then request Supra-Gingival Dentistry by Dr. John W. Johnson DDS.
This minimally invasive technique uses the latest advances in adhesive dentistry, composites, and ceramics to save tooth structure and place restorations above the gum line, where the gums want it to be, keeping your smile healthy and strong. Contact our office if you want to learn more about supra-gingival dentistry. Dr Johnson is very experienced in supra-gingival dentistry, having practiced and taught it for over 25 years.

Effect of radiofrequency radiation from Wi-Fi devices on mercury release from amalgam restorations

Dental amalgam is composed of approximately 50% elemental mercury. Despite concerns over the toxicity of mercury, amalgam is still the most widely used restorative material. Wi-Fi is a rapidly using local area wireless computer networking technology. To the best of our knowledge, this is the first study that evaluates the effect of exposure to Wi-Fi signals on mercury release from amalgam restorations.


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Imaging Findings of Bisphosphonate-Associated Osteonecrosis of the Jaws

BACKGROUND AND PURPOSE: Bisphosphonates are drugs that decrease bone turnover by inhibiting osteoclast activity. An association between the use of bisphosphonates and osteonecrosis of the maxilla and mandible has recently been described. This study describes the imaging findings of bisphosphonate-associated osteonecrosis of the jaws.

MATERIALS AND METHODS: This is a retrospective series of 15 clinically diagnosed patients, identified at 3 centers. Eleven patients were women, of whom 6 had breast cancer, 3 had osteoporosis, and 2 had multiple myeloma. Of the 4 male patients, 2 had prostate cancer, 1 had multiple myeloma, and 1 had osteoporosis. The age range of the patients was 52–85 years (average, 68 years). The mandible was the clinical site of involvement in 11 patients, and the maxilla was involved in 4 patients. Imaging consisted of orthopantomograms in 14 patients, CT scans in 5 patients, and radionuclide bone scan in 1 patient. Nine patients had sequential imaging. Two radiologists reviewed the images.