[Ectodermal dysplasia: multiple manifestations of a hereditary disease].

Ectodermal dysplasia is a hereditary disease that can manifest itself in many ways. Four cases, including two cases involving heterozygote twins, are presented. The clinical signs of the disease, as observed are compared to the knowledge offered in the classic and modern literature.

[Herpesvirus infection: from the primary oral lesion to recurrent herpes].

This paper presents an overview of the clinical conditions associated with a herpetic lesion at the time of the primary infection, as a true primary infection or a first herpetic accident, or during recurrences. The virus responsible, its anatomy and its functioning are detailed. The etiology and transmission of herpetic viral infection, its evolution and complications, as well as diagnostic aids are also discussed.

A comparison of the effects of two hydroxyapatites and a methacrylate resin on bone formation in the rat ilium.

The bone response to two hydroxyapatite (HA) products (Osteogen and Alveograf) and a porous methacrylate resin material (HTR) in rats was compared. Fifty rats had four holes drilled in each iliac crest. The three alloplasts were placed in separate cavities and the fourth cavity was left empty as an absolute control.

Reaction of the dental pulp to hydroxyapatite.

The purpose of this study was to evaluate the action of hydroxyapatite (HA) (Osteogen HA Resorb, GBD Marketing Group Inc., Valley Stream, N.Y.

Electron microscope characteristics of dentin repair after hydroxylapatite direct pulp capping in rats.

In order to study the osteogenic action of hydroxylapatite (HA) on the dental pulp, a pulp capping experiment was designed using the rat upper molar. Under general anesthesia, molar teeth in 14 male Sprague-Dawley rats were pulp capped with Osteogen (HA) or with Dycal as a control material. After pulp capping, the maxillary molars cavities were restored with amalgam and a pedodontic steel crown was adjusted and sealed over the molar teeth on either side of the maxilla.