Simultaneous repair and rebase of a removable partial denture.

A patient presented a unique dental problem: the evulsion of mandibular canines, and the restoration of anterior alveolar bone associated with periodontal disease. A mandibular removable partial denture, bilaterally supported by the canines, premolars, and molar abutments of blade implants, had been worn for more than ten years. The open clasps in the canine areas were irritating the oral tissues, and the space under the anterior saddle of the denture was retaining food.

Amoxapine intoxication in an infant: seizures arrested with diazepam.

A 15-month-old infant had hyperpyrexia and severe generalized seizures without cardiovascular toxicity after the ingestion of 250 mg of amoxapine, a new tricyclic antidepressant of the dibenzoxapine subclass. The seizures failed to respond to physostigmine or the usual anticonvulsant therapies, but were controlled after eight hours by a second administration of diazepam. The child died 144 hours after amoxapine ingestion.

Jaw claudication. Its value as a diagnostic clue.

Jaw claudication accompanies relatively few disorders, but it may be an important presenting feature that heralds serious underlying disease. In temporal arteritis, for example, jaw claudication rather than the classic finding of unilateral lancinating headache may be the distinguishing symptom. In the case reported here, jaw claudication was a prominent symptom for five months in a black woman.

Allergic contact stomatitis from a gold alloy--fixed partial denture.

Allergic contact stomatitis to gold is rare. To our knowledge, seven cases caused by dental restorations have been previously reported. Each of the patients was female.

Reinforced matrices for pin-amalgam restorations reduce microleakage.

The considerable decrease in microkeakage in the compound-reinforced restorations may be due to the tighter fit of the matrix band at the gingival wall of the preparation, which allows better condensation and marginal sealing of the restoration. The compound prevents lateral migration of the band during condensation pressures.

The influence of proximal retention grooves on the retention and resistance of class II preparations for amalgams.

The addition of proximal retention grooves to various designs of the Class II cavity preparation considerably improves the retention and resistance characteristics of amalgam restorations. The incorporation of proximal grooves should reduce the necessity for gross outline form as a means of gaining adequate retention adn resistance in the Class II preparation.

"Internal Waves" Advancing along Submarine Canyons.

Patterns of alternating up- and downcanyon currents have been traced along the axes of submarine canyons off California. The patterns arrive later at stations nearer the heads of coastal canyons. Where a canyon heads between two islands, the patterns advance down the axis.