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Results for “Decalcification, Pathologic”

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At least 127 records · Page 7Linked to original sources
PubMed1986

Hardness changes and mineral loss in enamel during the intra oral cariogenicity test in the presence of 0.125% EHDP with or without 0.1% F-.

The effects of a high EHDP concentration (0.125%) were measured under Intra Oral Cariogenicity Test (ICT) conditions in the presence or absence of F- (0.1%). EHDP as well as EHDP supplemented with F- inhibited the softening of enamel slabs to a similar extent as measured by microhardness. Measurements of the calcium and phosphate levels as a function of depth showed that the addition of F- to the EHDP solution further decreased mineral loss in the deeper layers. The results suggest that the inhibition of demineralization of the enamel by EHDP and F- is due to inhibition of acid production by microorganisms.

Calcium↗
PubMed1986

Comparison of the hardness change and mineral loss in enamel by dimethyl ammonium fluoride (alpha C12 DMEAHF) or NaF treatment under intra oral cariogenicity test conditions.

Changes in hardness as well as in Ca and P were determined in enamel slabs after treatment with 3% sucrose together with NaF or alpha C12 DMEAHF (both containing 0.006% F-) under Intra Oral Cariogenicity Test conditions. NaF treatment resulted in a hypermineralization of the surface of the enamel lesion suggesting formation of CaF2. Treatment with ammonium fluoride along with the same low F- concentration inhibits the caries process completely and seems to be a very promising anticaries agent.

Ammonium Compounds↗
PubMed1987

[Hyperfunctioning parathyroid carcinoma].

Two cases of parathyroid carcinoma with hyperparathyroidism, a relatively rare endocrine tumor are reported. It accounts for approximately 1-4% of all cases of primary hyperparathyroidism. Parathyroid crisis occurred for three times in one case. It is difficult to make an early diagnosis, frequently leading to misdiagnosis and wrong treatment. During operation iatrogenic implant or incomplete resection may occur, resulting in recurrence and repeated operations. It is important to differentiate from hypercalcemia caused by parathyroid adenoma. Neck mass, hypercalcemia usually above 14 mg%, severe decalcification and pathological fractures are characteristic. Fibrosis and inflammatory reaction of the tumor and metastases in the neck lymph nodes are commonly seen at operation. Histologically active tumor cell mitosis, capsular and vascular invasions usually exist. Local recurrences often occur after surgical treatment. If the surgeon can recognized the malignant change and give a curative resection in the initial operation, more gratifying results can be obtained.

Adult↗