Anatomical configurations in dry mandibles.
Explore the source record for details and available documents.
Bicuspid↗
Biomedical subjects
J Lustmann
Publications and source records attributed to J Lustmann.
Dentinoenamel junction area of a resorbing permanent incisor studied by means of scanning electron microscopy.
The surfaces of enamel and dentin that had become separated from each other presumably in the region of the dentinoenamel junction were examined. The enamel surface at the junction was scalloped; the scallops were made of enamel rods. The dentinal surface showed a mirror image picture, tubular in nature. Both surfaces were granulated, which may indicate that apatite crystals from the two tissues intermingle there.
Child↗
Complications of apexification resulting from poor patient compliance: report of case.
Explore the source record for details and available documents.
Calcium Hydroxide↗
Histomorphologic changes in the gingiva and pulp of overretained primary teeth.
This study examined the influence of overretention on the tissues of human primary teeth. The range of overretention was two to thirty-two years. Light microscopy and computerized morphometry were utilized for histologic assessment of twenty-five sites of twenty-one teeth. Dentinoclasts were found on the resorbing root surface of nine teeth; polymorphonuclear leucocytes were found in the pulp of fourteen teeth; and monocytes were present in all pulps. The apical and coronal ends of the junctional epithelium were apical to the cemento-enamel junction in eighteen and fourteen teeth, respectively. Significant correlations were found between the extent of overretention and gingival height, the length of the junctional epithelium and the extent of apical migration of the junctional epithelium. Present and previous findings indicate that odontoclastic activity in the pulp is reduced with overretention; and while at the beginning of overretention there is a lower percentage of pulps with polymorphonuclear leucocytes in the pulp, with an extended period of overretention an increase in this percentage takes place.
Adolescent↗
Interpositional bone grafting technique to widen narrow maxillary ridge.
A narrow edentulous alveolar ridge, less than 6 mm in the buccopalatal aspect, can prevent restoration by means of endosseous implants. A widening technique using alveolar ridge splitting and interpositional autogenous bone grafting is described. Accurate imaging of the alveolar bone shape and size was assessed with computerized tomography in a 1:1 scale. Following 6 months of healing, osseointegrated Brånemark implants were placed in the grafted sites.
Adolescent↗
Hemangiopericytoma of the tongue in an 11-year-old girl: case report and literature review.
Hemangiopericytoma is an uncommon vascular tumor of unknown etiology. The tongue is the most common site for this tumor in the oral cavity. Literature review disclosed 20 cases of hemangiopericytoma of the tongue, four of which were in the pediatric population. The treatment of choice is wide surgical excision. This tumor has a high rate of recurrence and often a malignant transformation. The literature is reviewed and an additional case is reported.
Child↗
Histologic characteristics of the gingiva associated with the primary and permanent teeth of children.
The severity of the gingival inflammatory response to dental plaque increases with age, and it has been suggested that this phenomenon may be related to histological characteristics of the gingiva. The objective of this study was to compare the histological characteristics of the gingival tissues of primary teeth with that of permanent teeth in children. Prior to extraction, children were subjected to a period of thorough oral hygiene. Histological sections prepared from gingival biopsies were examined using the light microscope. One biopsy from each of seven primary and seven permanent teeth of 14 children, whose mean ages were 11.0 +/- 0.9 and 12.9 +/- 0.9 years respectively, was obtained. All sections exhibited clear signs of inflammation. Apical migration of the junctional epithelium onto the root surface was associated only with the primary teeth. Compared with the permanent teeth, the primary teeth were associated with a thicker junctional epithelium (P < 0.05), higher numbers of leukocytes in the connective tissue adjacent to the apical end of the junctional epithelium (P < 0.05), and a higher density of collagen fibers in the suboral epithelial connective tissue (P < 0.01). No significant differences were noted in the width of the free gingiva, thickness of the oral epithelium, or its keratinized layer. In conclusion, this study indicates significant differences in the microanatomy of the gingival tissues between primary and permanent teeth in children.
Child↗