ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01810.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01811.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Abstract.The right temporomandibular joint (TMJ) was removed at autopsy from 18 individuals and the articular surfaces were scored for macroscopic lesions. Soft tissue specimens were cut out of the medial, lateral and posterior parts of the temporal and condylar components and frozen. The sections were stained with toluidine blue (1‐N HC1 solution) and with alcian blue (CEC method) for sulfated glycosaminoglycans. The sections were examined for inter‐ and pericellular metachromasia and alcian blue staining. Macroscopic surface lesions were found in 14 of the joints. The highest score of inter‐and pericellular metachromasia was found in the anterior parts of the joints and a negative correlation was found between the score of surface lesions and that of intercellular metachromasia. Pericellular metachromasia was found mainly in the mineralized cartilage and cartilage layers of the articular surface. Although the CEC values of pericellular staining commonly reached a level indicating the presence of keratan sulfate, the majority of the CEC values found corresponded to those of chondroitin‐dermatan sulfate. It was concluded that sulfated GAG are localized mainly to the anterior part of the TMJ and that macroscopic TMJ surface lesions are associated with a reduction of sulfated glycosamino

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01812.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Abstract.Two cases of adenomatoid odontogenic tumor were examined by light and electron microscopy. Morphologically the tumors could be divided into four layers. The ultrastructure of the tumor cells of each layer was revealed to be similar respectively to that of four layers seen in the enamel organ of a normal tooth germ. Duct‐like structures and eosinophilic small areas were frequently present in compactly proliferating cell layers. Short columnar cells forming duct‐like structures and eosinophilic small areas appeared similar ultrastructurally to ameloblasts during predentin formation. Therefore it seems reasonable to assume that this tumor originates from the enamel organ.The contents in the lumen of each eosinophilic small area varied, and seemed to be secreted into the stroma by circumscribing epithelial tumor cells. A fine filamentous layer was present in both of the duct‐like structures and some of the eosinophilic small areas, and the former was different from the latter with respect to the alcian blue (pH 2.5) and toluidine blue (pH 4.4) staining reac

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01813.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Abstract.A study of 105 odontogenic cysts revealed the presence of pigmented cells in the cyst wall in 38% of the cases. The frequency of pigmented cells was higher in the inflammatory odontogenic cysts than in the developmental cysts. Although isolated pigmented cells were seen within the epithelial lining and cyst cavity, the larger collections were closely associated with cholesterol crystals and hemosiderin deposits; they contained light brown cytoplasmic pigment which manifested sudanophilia, acid‐fastness, silver reduction capacity, PAS positivity and yellow autofluorescence in ultraviolet light. The morphology, histochemical reactions and autofluorescence suggest that the pigmented cells are macrophages containing ceroids.It has been suggested that the hemosiderin which is found in the cyst wall serves as an oxidation catalyst for the locally liberated lipids, the end result of which is the formation of the ceroid pigmen

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01814.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Abstract.Thein vitrolymphoblastic response to autologous dentogingival plaque (DGP) extract at nine concentrations was measured in 28 individuals (Periodontal Index (Russell 1956] 0.8–7.4). Significantly elevated responses were obtained in 25 of the patients but the levels of the peak responses were unrelated to the severity of the disease. There was a significant (n=28, r=−.734) negative linear relationship between the PI of the individuals studied and the logarithmic concentration of DGP producing the peak lymphoblastic response. Lower concentrations of DGP extract would appear to be required to achieve peak responses in patients with severe periodontal dise

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01815.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Abstract.Using dogs' teeth, cells displaced into the dentinal tubules due to dry cavity preparation were observed using electron microscopy. In order to obtain adequate fixation a new local‐perfusion method was employed. Most of the cells which moved into the dentinal tubules were odontoblast nuclei and partly neutrophilic leukocytes and erythrocytes. Not only odontoblast nuclei but also cytoplasmic organelles, such as mitochondria, rough endoplasmic reticulum, free ribosomes, and lysosomes were displaced into the tubules. The weavings of dentinal fibers in the tubules were observed in some area

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01816.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

摘要:

Book reviews in this article:PERIDONTAL DISEASE: Basic Phenomena, Clinical Management, and Occlusal and Restorative Interrelationships, by Saul Schluger, Ralph Yuodelis and Roy Page.Salivary Glands in Health and Disease, by D. K. Mason and D. M. Chisholm.A Guide to Dental Radiography: Dental Practitioner Handbook No. 27, by Rita A. Mason.

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01817.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1978.tb01818.x

出版商:Blackwell Publishing Ltd    

年代:1978

数据来源: WILEY