The Two Faces of Resorption

Bélanger, Leonard F.; Semba, Teruhiko; Tolnai, Susan; Copp, D. Harold; Krook, L; Gries, Christian L.

doi:10.1007/978-3-642-49802-2_1

Cited by 8 publications

(3 citation statements)

References 17 publications

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“…In this connexion the phenomenon of calciolysis, which was detected for the first time after dialysis in five of the patients, is of interest. Only one of these five patients presents histological evidence of parathyroid overactivity, an association that would be anticipated if the view of Belanger et al (1965) on the role of the osteocyte in bone metabolism is accepted. One of our patients with calciolysis and other abnormalities of calcification does not present any histological features that can be unequivocally interpreted as due to parathyroid activity.…”

Section: Distribution and Intensity Of Bone Changes In Patients With mentioning

confidence: 86%

Bone histological changes occurring after haemodialysis treatment for chronic renal failure

Woods

Bishop

Nicholson

1972

The Journal of Pathology

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Section: Distribution and Intensity Of Bone Changes In Patients With mentioning

confidence: 86%

Bone histological changes occurring after haemodialysis treatment for chronic renal failure

Woods

Bishop

Nicholson

1972

The Journal of Pathology

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“…This was due to increased levels of serum PTH. His explanation for the osteolytic process was founded on Belanger's studies (Belanger et al 1966) which suggest that osteolysis is the main catabolic process in bone metabolism, whereas osteoclasia is considered to be of minor significance, occurring mainly on bony surfaces. Belanger maintained that the osteolytic process is accelerated with increased PTH production, increased consumption of vitamin D, primary hyperparathyroidism, and in osteogenesis iniperfecta and other forms of osteoporosis.…”

Section: Convincing Scientific Evidence Supports Thementioning

confidence: 99%

Calcium and periodontitis: Clinical effect of calcium medication

Uhrbom

Jacobson

1984

J Clinic Periodontology

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In contrast to the generally held concept that periodontal disease is caused by microorganisms, Henriksson (1968) suggested that a nutritional deficiency of calcium might be the cause. He elicited secondary hyperparathyroidism in beagles from a low calcium/high phosphorus diet and found that the osteolytic demineralization of bone that followed seemed to involve alveolar bone more than other bones. In a report on 10 persons with advanced periodontal disease, Krook et al. (1972) stated that the disease was reversed when they were given 1 g Ca/day for 180 days. These results have been disputed. The present study is an attempt to repeat the experiment performed by Krook et al. (1972) under more stringent conditions. The hypothesis that calcium supplementation reverses destructive periodontal disease is tested. 66 persons referred to our clinic for periodontal problems were prescribed at random calcium (1 g) or placebo tablets daily during a trial period of 180 days. Their periodontal status was examined at day 0 and at day 180. The parameters used for comparison were Plaque Index, Gingival Index, probing depth, mobility and furcation involvement. The radiographically registered level of alveolar bone was also recorded, but subsequently discarded since no change could be ascertained. The patients were interviewed as to their consumption of calcium via milk and cheese at days 90 and 180. This was in order to estimate roughly whether or not their dietary calcium consumption was adequate. The recommended allowance of 800 mg/day was used as a reference. During the trial period 7 persons withdrew -- 2 from the test group and 5 from the control group. This was due mainly to digestive disorders, reported by the patients. A comparison at day 0 between the 31 test and 28 control patients revealed no statistical differences concerning the periodontal parameters studied. At day 180 both groups showed a slight improvement in Plaque Index, Gingival Index and probing depth; however, there was still no statistical difference between them. The dietary analysis established a low calcium consumption among 1/3 of the patients. Even in these cases calcium supplementation had no effect. It is concluded that calcium supplementation for 180 days does not influence the periodontal status of patients with moderate to advanced periodontal disease. Secondly, patients on a low calcium diet do not differ from those receiving an adequate supply. Finally, the study cannot support the hypothesis that calcium deficiency is a main cause of destructive periodontal disease.

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“…The free odontoblast processes and pink dentinal borders both suggest that the intercellular substance had been or was being decalcified. It is interesting tO' note that basophilia near resorption sites in bone has been interpreted as indicating that a decalcification process was going on (Ruth 19541961, Belanger et al 1966.…”

Section: Discussionmentioning

confidence: 99%

The effects of freezing human dentin and cementum before implantation in the subcutaneous tissues of the rat

Morris

1969

J of Periodontal Research

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Twenty‐two sections of human roots including cementum and dentin were preserved by freezing at ‐5 degrees centigrade for an average of 27 days and then implanted into the subcutaneous tissues of the rat for periods up to one year. The reactions of the host connective tissues were compared with those previously noted around implants from freshly extracted teeth. Freezing caused quantitative rather than qualitative differences. Tissue reactions were seen earlier and to a greater degree than with fresh implants. It was concluded that freezing is a suitable method for preserving roots to be used for experimental heteroptic implantation in rats. The results also suggested that root resorption may consist of alternate decalcification and cellular digestion.

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The Two Faces of Resorption

Cited by 8 publications

References 17 publications

Bone histological changes occurring after haemodialysis treatment for chronic renal failure

Bone histological changes occurring after haemodialysis treatment for chronic renal failure

Calcium and periodontitis: Clinical effect of calcium medication

The effects of freezing human dentin and cementum before implantation in the subcutaneous tissues of the rat

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