Biomedical subjects

G Anneroth

Publications and source records attributed to G Anneroth.

At least 91 records · Page 5Linked to original sources

PubMed1975

Calcifying odontogenic cyst.

The calcifying odontogenic cyst may present some problems of differential diagnosis, both clinically and histopathologically. The present article reports the case of a calcifying odontogenic cyst in the maxilla of a 54-year-old woman. The histopathologic examination showed that structures characteristic of calcifying odontogenic cyst and odontogenic tumor of ameloblastoma-like appearance occurred simultaneously. The lesion was benign. After surgical removal of the cyst, the wound healed uneventfully and the region was free of symptoms 12 months postoperatively.

Calcinosis↗

PubMed1975

Benign cementoblastoma (true cementoma).

Benign cementoblastoma is a rare benign odontogenic tumor of mesenchymal origin. As only a few documented cases have been reported in the literature, the clinical and histologic criteria for identifying this type of tumor are still uncertain. Thus, problems of differential diagnosis warrant the present report of a case of benign cementoblastoma in the mandible of a 27-year-old man.

Adult↗

PubMed1975

Morphology of salivary calculi. The distribution of the inorganic component.

Different hypotheses concerning the pathogenesis of salivary calculi have been postulated on the basis of their morphology. In the present study, microradiography of plane-polished ground sections of a number of salivary calculi has shown that the morphology of salivary calculi varies considerably. The commonly accepted concept that salivary calculi emanate from an inorganic nucleus, which then successively grows by the apposition of alternating shells of organic and inorganic substances, could not be established by this study, as the microradiographs show that the distribution of mineral elements varied extensively from one calculus to another. Thus, whereas some calculi exhibited a lamellar structure, others consisted largely of homogeneous, irregular layers of alternatively high and low mineral content. The lamellar structure also showed great variation, extending in some cases over the entire diameter of the calculus. Some calculi lacked the lamination in their peripheral parts whereas, in others, lamination occurred only in the most peripheral zone. The structure of the central portions also showed a varied configuration. The calculi were often built up around one or more mineralized nuclei, often centrally located, while in some cases a mineralized nucleus was lacking. This report discusses some of the significant factors in the great variation in morphological features and therefore also in the pathogenesis of salivary calculi.

Humans↗

PubMed1975

Crystalline structure of salivary calculi. A microradiographic and microdiffractometric study.

The crystalline substances localized in different areas of salivary calculi were identified by using microradiographic and X-ray microdiffractometric techniques. All 19 calculi analyzed had a general pattern of apatite which was recognizable both in the center and at varying distances from the core. In addition to apatite patterns, six of the calculi gave a diffraction pattern of whitlockite, which in all but one case was located in the central part of the calculi. The influence of various factors on the distribution of the crystalline substances of apatite and whitlockite within the calculi is discussed.

Apatites↗

PubMed1975

Denture stomatitis. A clinical, electron-microscopic, microradiographic and light-microscopic study.

The present study includes a reexamination of 10 patients who, two years ago received complete upper and lower denture treatment to eliminate an existing denture stomatitis. Clinical healing of the denture stomatitis was obtained only in one patient, whereas the remaining nine patients wtill displayed an obvious denture stomatitis. Biopsies were taken from the palatal mucosa and examined histologically, microradiographically, and by electron microscopy. The results of these examination indicated that, in denture stomatitis there is a reduced thickness of the epithelium, an absence of a stratum corneum, a markedly widened intercellular space, especially in the stratum basale, and an intense infiltration of inflammatory cells, plasma cells and lymphocytes in the connective tissue, as well as in the epithelium. These changes are characteristic features of an inflammatory process, and similar to the changes which occur, for example, in chronic, marginal gingivitis. The composition of the inflammatory infiltrate suggested that, in denture stomatitis, immunological phenomena influence the pattern of the tissue reaction.

Alveolar Process↗

PubMed1975

Histological evaluation of gingival damage by toothbrushing. An experimental study in dog.

The purpose of the investigation was to present an experimental model for a comparative histological evaluation of the effect on gingiva using two different types of bristle material at tooth brushing. Fifteen dogs constituted the material. Two different teeth or groups of teeth were selected on each dog. One tooths was brushed with a nylon brush. The diameter of the bristles was approximately 0.25 mm. The other tooth was brushed with a polytene brush. The diameter of the bristles vary between 0.7 mm at the base of the bristle to 0.25 mm in the near end of the bristle. Manual brushing during 10-60 seconds was carried out in 7 dogs and the other eight dogs were brushed with a mechanical device for 10-30 seconds. A histological evaluation of the relative degree of tissue damages based upon a grading of these damages in terms of a 0-3 point scale was carried out by two independent observers. Wilcoxon's matched-pair signed rank test was applied for a statistical analysis of the result of the histological examination. The conclusion was that the two different types of brushes most likely cause different damages on the gingival tissue and that the polytene brush appeared to cause less tissue damage than the nylon brush.

Animals↗

PubMed1975

Denture stomatitis. A histological and microradiographic study of the alveolar mucosa.

The alveolar mucosa in the upper jaw from 12 patients suffering from severe denture stomatitis was examined histologically and microradiographically using ultrasoft X-rays. Pathological changes of the epithelial cell layers were observed in all cases. In 10 of the 12 cases examined no keratinization was found. A reduction in the number of epithelial cell layers was commonly observed. In most cases the connective tissue showed signs of moderate to severe inflammation. The inflammatory reaction and the degenerative changes of the tissue were presumably due to a combined effect of microorganisms and mechanical trauma.

Alveolar Process↗

PubMed1975

Pachyonychia congenita. A clinical, histological and microradiographic study with special reference to oral manifestations.

This paper rresents a clinical, histological and microradiographic study of three patients with pachyonychia congenita with special reference to oral manifestations. The patients, who are relatives, exhibited thickening of finger- and toe-nails, follicular keratosis, palmoplantar keratosis and hyperhidrosis, oral leukokeratosis, and natal teeth. It is stated in the discussion that natal teeth and oral leukokeratosis may constitute the earliest clinical manifestations of pachyonychia congenita and that they appear to accur earlier than nail lesions. When there is a hereditary disposition for pachyonychia congenita, it is important to inspect the oral cavity at an early stage.

Adult↗

PubMed1973