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Biomedical subjects

R Dambrain

Publications and source records attributed to R Dambrain.

At least 37 records · Page 2Linked to original sources
PubMed1979

[Micrographic aspect of mandibular osteoradionecrosis (author's transl)].

Fragments of the lower jaw from 42 patients with carcinoma of the oral cavity or oropharynx, and treated primarely with fraction radiotherapy, were excised for radiation osteonecrosis 6 month to 10 years after irradiations. The excised specimens are X-rayed before being coated with methylmetacrylate. They are then cut into thick sections along lines detailled on the X-ray films. The sections are trimmed to 80 microns and examined microradiographically. Two observations are sufficient to demonstrate destruction or reorganisation of the bone tissue. Reabsorption of unusual appearance is seen around the Haversian canals. The newly formed tissue resembles either embryonic bone matter, or lamellar tissue as seen in osteomyelitis.

Aged↗
PubMed1977

[Ultrastructure of achromic malignant melanoma of the gingiva. value in differential diagnosis].

The authors report a case of a large oral tumour. On the basis of classical histological and histochemical techniques, the diagnosis was oriented towards an angiosarcoma though it was not possibile to eliminate an achromic melanoma. Ultrastructural studies demonstrated the presence of premelanosomes and established the diagnosis of an achromic malignant melanoma. The clinical interest of this approach isthus emphasised.

Aged↗
PubMed1975

Microradiographic description of a crown dilaceration.

A case of a crown dilaceration in an upper permanent incisor of a 6-year-old child is described. Microradiographs of sagittal sections demonstrated that enamel was broken into fragments which differed on the vestibular and palatal sides. A study of the structural lines in the dentin layer and the disposition of the enamel fragments permits consideration of the lesion as a consolidated fracture.

Child↗
PubMed1975

[Statistical analysis of 92 orthodontic cases].

A comparison has been made within 92 children who were either observed or treated by extractions or by orthodontic appliances and submitted to statistical analysis. Conventional treatments do not influence the skeletal structures except for the convex faces which are favorably modified by plate. The changes of the dental axis varied according to the dental group. The growth direction of the anterior facial structures seems to be constant amongst all considered children.

Bicuspid↗
PubMed1975

[Fibrous dysplasia and a cementofibroma in a child].

The authors present a case of odontogenic tumour occuring at birth. Its origin seems to be an early modification of the ectomesenchyme. The course of the disease may be followed by lines within the dentin traced by courses of tetracycline during the first few years of life.

Cementoma↗