Biomedical subjects
Publications and source records attributed to P Piccirillo.
Aged gutta-percha filling cones become brittle and unsuitable for use; a technique was published for reducing their fragility, thus "rejuvenating" them. The Authors study this technique in five different cone brands, but only 30% of cones made usable.
Microleakage of class V restorations in posterior teeth was studied, using different types of materials and cavity varnish. Significantly less microleakage was recorded by applying some layers of cavity varnish and using spherical alloy.
The Authors study conservative preparation designs for Class II amalgam restorations, with and without an occlusal dovetail. They propose the use of a high-copper filing admix allow in Clas II preparation with occlusal dovetail and the use of high-copper spherical alloy in box only restorations.
The Authors analyse the composition of endodontic pastes and emphasize the inutility of many substances. Therefore it is necessary to study a technique for reducing the pastes in endodontic obturations and for increasing guttapercha.
The AA. discuss the problem of morphology of cranial base in children with cleft lip and palate, using a cephalometric appraisal. They record the data from 28 patients with cleft and from 30 normal children; the linear dimensions from nasion to sella and sella to basion are significantly reduced in the cleft lip and palate group, while cranial base angulation doesn't differ between the cleft sample and the control group.
Explore the source record for details and available documents.