Evaluation of desensitizing agents on dentin permeability and dentinal tubule occlusion: an in vitro study.

One hundred twelve specimens from bovine incisors were divided into eight groups: Group 1 (treated with 10% strontium chloride gel), Group 2 (treated with 2% sodium fluoride gel), Group 3 (treated with 2% stannous fluoride gel), Group 4 (treated with 5% potassium nitrate gel), Group 5 (treated with 10% potassium nitrate gel), Group 6 (treated with 3% potassium oxalate gel), Group 7 (treated with hydroxyethylcellulose gel), and Group 8 (which received no treatment). Dentinal tubules were exposed after 0.5 mm of deep abrasion using a carbide bur and EDTA gel application.

Double-chambered right ventricle associated with mural and pulmonic valve endocarditis: description of a clinical case and review of the literature.

A double-chambered right ventricle is a relatively uncommon congenital cardiac defect characterized by the presence of anomalous muscle bundles dividing the right ventricle into a high-pressure proximal chamber and a low-pressure distal chamber. This pathology is often wrongly diagnosed in adult patients. We report the first case of a patient with double-chambered right ventricle associated with a mural and pulmonic valve endocarditis caused by Streptococcus parasanguis diagnosed with two-dimensional echocardiography.