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At least 649 records · Page 36Linked to original sources
PubMed1995

Lacrimo-auriculo-dento-digital syndrome: a literature review and case reports.

Lacrimo-auriculo-dento-digital syndrome, which has an autosomal-dominant pattern of inheritance, typically affects the lacrimal apparatus, ears, teeth, and hands. More recent case reports have uncovered involvement of the kidneys and the respiratory and skeletal systems. Salivary gland malformation may also be a feature of the syndrome, leading to dry mouth. The characteristics of the syndrome vary among individuals, but dental anomalies seem to be prevalent. Microdontia and hypodontia occur, possibly with gray enamel, wear, and caries. This case report introduces a new three-generation family of six individuals affected with lacrimo-auriculo-dento-digital syndrome and concentrates on the dental presentation and management of two of the members.

Abnormalities, Multiple↗
PubMed2005

[Effect of erosion on strength of dental infiltrated Al2O3 ceramics].

The objective of the research is to investigate the elements of routine sandblast technique on the evolution of bending strength of dental infiltrated Al2O3 ceramics and the underlying erosion mechanism. The plane specimens of an infiltrated ceramic were manufactured, polished and then tested under the modified pen-like sandblasting apparatus (90 degrees erosive angle and 10 mm sandblasting distance), with different grit sizes, working pressure and disposing time. Half of samples were selected randomly and sintered subsequently with Vitadur alpha veneering porcelain. Before and after sintering, the three-point-bending strengths was measured, and the surfaces of dental porcelain were observed with SEM and LCSM. The bending strength of ceramics decreased significantly after sandblast as compared with that of empty control group. After the procedure of sintering the veneering porcelain, the descending evolution of bending strength slowed down. Under the present manufacturing conditions, grit size effect is prominent among those correlative elements of sand grit size, working pressure and disposing time. And fatigue cracking characterizes the mechanism of erosion of dental infiltrated Al2O3 ceramics.

Aluminum Oxide↗
PubMed1989

[Casting of pure titanium and high fusing dental alloys by experimental casting machine. 7. Casting procedure for pure titanium denture frame].

The pure titanium cast frameworks were made using an arc-melting pressure and vacuum casting apparatus invented by Sato, and an experimental investment material. The salient features of the method and the cast frameworks were as follows: 1. The casting apparatus used was capable of making both complete and partial denture frameworks with pure titanium. It reduced casting errors and the interaction between titanium and the casting mold, producing less porous casted frameworks with a smooth surface. 2. The experimental investment material made a firm heat-resistant investment model with a smooth surface. It showed appropriate expansion and also excellent strength at room temperature after the burn out of the wax pattern. 3. The titanium casted frameworks fitted to the model and the oral cavity closely, and yielded satisfactory clinical results in more than 15 patients.

Dental Casting Investment↗
PubMed1982

Tensile creep of dental amalgam.

Rather than the usual compressive dental creep, various types of one week old dental amalgams were continuously monitored in tensile creep. Testing was done at 37, 45 and 50 degrees C, in a specially designed apparatus capable of 0 to 60 degrees C while maintaining a constant true tensile stress of 17 MPa. For the first time, the classical four stages of creep were observed at elevated temperatures in the low Cu amalgams, including creep rupture. The high Cu systems displayed only transient creep up to 50 degrees C and no rupture. Approximately one half the stress was needed in tension to provide the equivalent creep in compression.

Copper↗
PubMed1993

Craniomandibular disorders in the geriatric patient.

This paper represents a general review of basic age-related changes that take place in the craniomandibular apparatus and the most frequently presenting conditions associated with craniomandibular disorders (CMD) in the elderly. The evaluation of geriatric patients with signs or symptoms of CMD must consider (1) normal age-related changes in the craniomandibular apparatus and their impact on both normal function and responses to stress; (2) the role of dentition status and dental prosthesis in CMD; and (3) the contribution of malignant disease, psoriasis, arthritic conditions, pseudogout, granulomatous vascular conditions, and metaplastic involvement of tissue to the pathosis of CMD. The clinician must also be aware of various effects of psychologic, sociologic, and biologic aspects of aging on the development of headache and atypical facial pain as components of CMD in the geriatric patient.

Aged↗