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PubMed1998

[The clinical evaluation of the quality of tooth filling after exposure to hydroxyethylidene diphosphonic acid].

Ultrastructure of dental enamel was examined under electron microscope after exposure to hydroxyethylene diphosphonic (HEDP) acid and prophilometry of enamel surface was carried out after its exposure to acid salts; clinical studies in 105 patients aged 18-50 years with different diseases of hard dental tissues were carried out in order to assess the duration of filling preservation after dental enamel treatment with HEDP salts. Clinical results were assessed from subjective sensations of patients and data of examination. The criteria of assessing the results were presence of a filling in a filled carious cavity, marginal adhesion of the filling, alteration of color along the external interface of the filling, caries relapses, status of dental pulp and periapical tissues. Clinical and laboratory studies showed that treatment with HEDP acid creates favorable conditions for tooth filling.

Acid Etching, Dental↗
PubMed1978

The effect of ethane-1-hydroxy-1, 1-diphosphonic acid (EHDP) on matrix induced ectopic bone formation.

The effect of diphosphonates (EHDP) was studied on induced ectopic osteoneogenesis. Decalcified allogeneic bone matrix was implanted into the lumbar muscles in rabbits for an ectopic osteoinductor. The ectopic new bone formation was studied under continuous EHDP administration and after discontinuation of EHDP. Although there was no inhibitory effect of EHDP on the osteoinduction, the calcification of the new bone and the resorption of the implanted matrix was retarded. The induced "osteoid-like" tissue had an atypical structure with a small number of cells and a deficiency in collagen fiber bundles. There were also large fields of new cartilage formation. Thus remodelling and mineralization were inhibited under the influence of continuous administration of EHDP. After discontinuation of EHDP administration a recovery phase was observed which seemed to lead to the formation of a normal ossicle.

Animals↗
PubMed1994

Reversible findings of methylene diphosphonate bone scintigraphy in Raynaud's phenomenon: case report and review of the literature.

A 53-year-old woman with carcinoma of the right breast, spinal metastases and right arm lymphoedema was referred for bone scintigraphy prior to commencement of chemotherapy. The patient arrived in the department complaining of pain in the left hand, which appeared red and slightly swollen. Bone scintigraphy revealed increased tracer uptake in the first four metacarpal and all the carpal bones of the left hand. A repeat three-phase bone scintigram, performed 1 week later when the patient was asymptomatic, showed equal blood flow to both hands with normal blood pool and uptake in bone images. The case demonstrates a state of reversibly increased bone uptake in a patient injected at the time of an episode of Raynaud's phenomenon and the possible implications for scan interpretation.

Bone Neoplasms↗