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At least 667 records · Page 37Linked to original sources
PubMed1999

Splinted all-ceramic laboratory technique for implant restorations.

The fabrication of esthetically pleasing implant restorations remains a common and frustrating challenge for dental technicians as well as clinicians. Poor implant placement and post surgical gingival response often creates a difficult foundation on which to build a successful restoration. Castable, cast-to and prepable abutments are employed to correct these problems as they allow some measure of control of angulation and depth of the clinical restoration. This article details the restoration of two implants with ceramic implant abutments and splinted crowns. The technique described achieves a high level of esthetics despite less than ideal conditions.

Adult↗
PubMed1975

Experimental studies on osteoporosis.

Nutritional secondary hyperparathyroidism (NSH) defines a spontaneous and experimental disease in most domesticated and in some wild animals, caused by dietary calcium deficiency and/or phosphorus excess. Calcium deficiency results directly in hypocalcemia, and phosphorus excess induces hyperphosphatemia which causes hypocalcemia. Secondary hyperparathyroidism thus results and the plasma parameters return to normal and are maintained but only at the expense of progressive bone loss. The bone loss is generalized but the bones are not uniformly affected. The hierarchy of bone loss is, in decreasing order, the jaw bones, especially the alveolar bone, other skull bones, ribs, vertebrae and, finally, long bones. Osteocytic osteolysis is the main mechanism of resorption and application of this concept is a condition sine qua non in the interpretation of the histologic lesions. The early loss of alveolar bone constitutes the initial event in periodontal disease in animals. The osseous lesions in animal NSH are reversible by correction of dietary calcium and phosphorus levels, provided a hyperostotic osteodystrophia fibrosa has not yet developed. The applicability of animal NSH as a model for human osteopenic conditions, including periodontal disease and spinal osteoporosis, is supported by the very inadequate calcium and phosphorus nutrition in most Western countries. The diet is deficient in calcium and excessive in phosphorus; both conditions induce NSH in animals. The degree of dietary calcium deficiency, as influenced by geographic, economic, and social factors, is positively correlated to the degree of periodontal disease and osteoporosis in the population. Evidence is presented to show that the radiographic and histologic manifestations of human periodontal disease and osteoporosis are the same as those of animal NSH. Periodontal disease is therefore considered a fore-runner to the clinically more important spinal osteoporosis. Limited experiments in human periodontal disease indicate that added dietary calcium can positively influence the alveolar bone loss.

Adolescent↗
PubMedDate not supplied

Accessing restoration margins--a multidisciplinary approach.

Dentists frequently balance periodontal, restorative, and esthetic concerns that will provide adequate tooth length, ensure periodontal health, and provide biological predictability. This report discusses the current and classical literature and provides a multidisciplinary approach of predictably "accessing" the restoration margins to facilitate long-term gingival health and tooth survival.

Crown Lengthening↗
PubMed2000

Treatment of an "ankylosed" upper central incisor in the mixed dentition.

A ten-year-old boy presented with an unerupted upper right central incisor (UR1). An OPG radiograph showed a supernumerary tooth lying over its crown, preventing its eruption. Standard orthodontic treatment involving removal of the supernumerary tooth, attaching a gold chain to the UR1 and treatment with fixed orthodontic appliances failed to bring the tooth down, until it was found that tough fibrous gingival tissue entwined in the gold chain had "ankylosed" the tooth. Once this tissue had been removed and the wound packed open, the tooth was brought down successfully into occlusion.

Ankylosis↗
PubMed2000

Altered passive eruption.

Biologic contributions to the smile play an important role in esthetics. The impact of the gingival complex on the esthetic qualities of a smile are significant, and both patients and dentists are developing a greater appreciation for the impact of gingiva on the beauty of a smile. Historically, the focus of periodontal therapy has been on managing patients with longer-appearing teeth secondary to attachment loss through pathology or as a result of periodontal surgery. Nevertheless, early diagnosis and treatment, as well as modern techniques and materials, have helped periodontology evolve to a point where such problems occur less frequently.

Epithelial Attachment↗
PubMed2001

Preprosthetic clinical crown lengthening procedures in the anterior maxilla.

Clinical crown lengthening procedures (CCLP) are used to enhance aesthetics and/or provide adequate tooth structure for placement and retention of a restoration while respecting the attachment apparatus. When restoration margins extend beyond the biologic width, inflammation and anatomic changes can develop. Anterior CCLP are indicated to increase the labial exposure of the clinical crown and/or the sound tooth structure coronal to the bone crest. Preservation of the interproximal papillae is mandatory to obtain desirable final results in the aesthetic region. This article illustrates various methods of CCLP used to achieve successful oral rehabilitation in the anterior maxilla.

Crown Lengthening↗
PubMed2001

Dracula's teeth syndrome.

OBJECTIVE: To describe a patient with facial pain, ipsilateral facial dystonia, and phantom supernumerary teeth, beginning after resection of hypertrophic gums. She had familial sensorineural deafness. BACKGROUND: Atypical cranial dystonia subsequent to dental procedures is associated with facial pain, dysesthesias, or phantom phenomena, but not with phantom supernumerary teeth. Patients with migraine are susceptible to experience cephalic phantom phenomena after dental procedures. Wynne syndrome is a hereditary autosomal dominant disorder characterized by congenital sensorineural deafness and supernumerary teeth. METHODS: Clinical examination, computerized tomography of paranasal sinuses and facial bones, magnetic resonance imaging of the brain, cranial electrophysiological testing, and electroencephalogram. RESULTS: A 52-year-old woman with history of migraine without aura for 40 years exhibited focal right facial involuntary tonic contracture accompanying chronic severe pain over the same area after gum resection. She reported a daily sensation of having two extra upper canine teeth pressing on her tongue, simulating vampire's ("Dracula's") teeth. She had high-frequency bilateral sensorineural deafness. Her computerized tomography studies, brain magnetic resonance imaging, and cranial electrophysiological testing were normal. CONCLUSION: This patient with chronic migraine had atypical cranial dystonia beginning after a dental procedure. Her dystonia was complicated by the unusual phenomenon of phantom supernumerary teeth. This condition may be misdiagnosed as atypical or psychogenic facial pain when facial dystonia is localized or subtle and is, therefore, confused with an idiosyncratic gesture or habitual spasm. Her signs and symptoms are reminiscent of Wynne syndrome.

Cuspid↗
PubMedDate not supplied

Long-term management of an idiopathic gingival fibromatosis patient with the primary dentition.

Gingival fibromatosis is usually seen as an isolated finding or occasionally in association with other features as part of a syndrome. The combination of gingival enlargement, hypertrichosis, epilepsy and mental retardation is also a commonly reported syndrome that features gingival fibromatosis. The following report is about a mentally retarded patient who has shown no sign of hypertrichosis, but has been taking phenobarbital as a long-term therapy drug for anti-convulsion. Long-term management of this patient has been carried out from the age of one-and-a-half years to 14 years old. The patient's clinical features, treatment received, histopathologic presentation of gingival fibromatosis and proper management of the condition are discussed.

Anticonvulsants↗
PubMed2001

The management of gingival and esthetic problems: a clinical case.

The coordinated management of gingival and esthetic problems is important in dentistry. In addition, the most difficult variable to control in the treatment of anterior esthetics is the soft tissue. This article discusses the relationship between the surrounding soft tissue and the emerging crown form. The authors introduce a soft-tissue index model technique that will help the technician in fabricating the final crown with a form similar to the provisional. In this case report, provisional crowns are fabricated with enough tissue support to provide for an optimal crown-gingival interface. The present case demonstrates how to manage the gingival margin in the provisional stage and how to transfer the provisional and soft tissue to the laboratory model.

Adult↗