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At least 397 records · Page 22Linked to original sources
PubMedDate not supplied

[Alterations in facial bones in patients with craniostenosis].

The report is devoted to the characteristic of front bones for ill different phylums of craniostenoses. It is revealed, that at craniostenoses regularly there are changes of front bones, and also common violations of a bone formation visualized by rise of intensity of their shade.

Adolescent↗
PubMedDate not supplied

Influence of harvesting technique and donor site location on in vitro growth of osteoblastlike cells from facial bone.

PURPOSE: Donor morbidity is minimized when tissue engineering is applied to produce osteogenic grafts by growing osteoblasts on biomaterials. However, limiting factors are the origin, proliferation, and differentiation of osteoblasts. Therefore, the aim of this study was to evaluate the efficacy of growing osteoblasts from different types of bone samples and to assess the influence of the donor site. MATERIALS AND METHODS: From 28 patients 37 bone specimens were obtained during removal of third molars in the maxilla and mandible. Seventeen specimens were bone chips and 20 were bone sludge. After subculturing primary cultures, histochemical and immunhistochemical tests (EZ4U test, BrdU labeling, ALP histochemistry, type I collagen immunohistochemistry, osteocalcin ELISA) were performed to determine cell proliferation, viability, and differentiation. RESULTS: Both bone chips and bone sludge from the mandible and maxilla are suitable for culturing human osteoblastlike cells. However, bone chips were superior to bone sludge with respect to ability to grow cells, and maxillary bone was superior to mandibular bone in this regard. Harvesting technique had only little influence on the expression of cell differentiation markers (ALP, type I collagen, osteocalcin). DISCUSSION AND CONCLUSION: Chips from human membrane bone, especially from the maxilla, are suitable for culturing high numbers of differentiated osteoblastlike cells. These cells may be used to tissue engineer bone grafts, which may be used to enhance the implant placement site.

Adolescent↗
PubMed1985

[Malignant lymphomas of the orbit, facial bones and the parapharyngeal space].

The evaluation of 21 patients with non-Hodgkin-Lymphoma and primary extranodal manifestations involving the orbits, the paranasal sinuses, and the parapharyngeal spaces shows no typical features in malignant lymphoma. The analysis of the morphological features in computed tomography allows no classification of the tumor type. The most important differential diagnoses within the region of the facial skeleton are discussed.

Adolescent↗
PubMed1987

Chondroblastoma of the skull and facial bones.

A series of 30 chondroblastomas was reviewed: 21 had occurred in the lateral part of the temporal bone, 6 in the mandible, 1 in the parietal bone, and 2 in the region that included the temporal bone and mandible. Of the 30 patients in the series, 20 were males and 9 were females; the sex of 1 patient was not stated. The ages of 29 patients ranged from 2 years 11 months to 70 years (mean, 43.5 years). Radiologic findings were not suggestive of a specific diagnosis, although the lesions appeared to be benign. Histologically, most tumors were classic chondroblastomas. However, some showed aneurysmal bone cyst-like areas and nodules of epithelioid cells without chondroid differentiation. Conservative reexcisions were usually curative. Approximately half of the patients had recurrence after curettage.

Chondroblastoma↗
PubMed1983

Actinomycotic osteomyelitis of the facial bones and mandible.

Actinomyces israelii is a part of the human oral flora and thus is more commensal than pathogenic. Oral trauma, accidental or purposeful, can precipitate its introduction into the soft tissues, to which infection is usually confined. The case presented is one in which, over a span of two decades (1956 to 1977), the extraction of a mandibular tooth resulted in a chronic actinomycotic osteomyelitis, destroying first the mandible, then both maxillae, and then the right zygoma, with decreased vision and proptosis despite repeated medical and surgical intervention. Adequate treatment required removal of the sequestrum and excision of all infected granulation tissue, scars, and involucra until healthy bone was exposed. Intravenous penicillin was administered for 2 weeks, followed by a 6-month course of oral penicillin. The patient was followed for 4 years and remained disease free.

Actinomycosis↗
PubMed1997

[The use of regression functions for reconstruction of the cutaneous profile, from facial bone elements].

Based on a sample of 51 living subjects, aged 21 years, whose sex was known and who has a teleradiographic tracing of the head (including soft tissues) in vestibular orientation, statistical mean types were established using the rectangular coordinates of 9 skeletal points and 10 cutaneous points. Spatial variability was demonstrated. The position of the skin points was placed relative to the homologue skeletal points and was used for simple and multiple "regression" equations for each of the coordinates. This study demonstrated that, despite application of sophisticated statistical procedures, there is a great degree of incertainty in the validity of facial "reconstruction" for a given subject.

Adult↗
PubMed1989

[Mycotic osteitis of the facial bones. A review of the literature apropos of a case].

The authors report a case of mycotic osteitis of the upper maxillary bone due to Candida Albicans occurring in a 56 year old female patient under treatment for chronic myeloid leukemia. The etiologically difficult diagnosis could only be confirmed after deep surgical biopsy with mycological study of a fragment. A review of the literature confirmed the rarity of upper maxillary involvement by Candida Albicans. Particularly when there is isolated involvement and no evidence of a distant primary focus. The differential diagnosis essentially includes centro-facial malignant granuloma.

Amphotericin B↗
PubMed1988

[Digital radiography in tomography of the facial bones].

In 14 patients the x-ray findings of dental, mandibular and maxillary roentgen diagnosis were compared with conventional tomography and tomography by digital radiography. All details important for diagnosis were shown by both techniques. Tomography by digital radiography offered a more convenient approach and pictures easier to be interpreted than pictures by conventional tomography.

Facial Bones↗