BOLLA , Marc

The aim of this cross-sectional study was to evaluate the dental formulas according to age because of possible changes during the last decades. From these dental formulas, the median age of emergence for the permanent teeth was deduced. The study population corresponded to the 1 to 15 year-old children who had consulted either a pediatric...

The aim of this study was to finalise a 90° peeling test on 60 human teeth. The dentinal surfaces to be stuck were characterised by micro-hardness, wettability, optical microscopy, SEM, AFM, XPS and EDS. The so-called fifth-generation bonding agent (Prime & Bond(®) 2.1 DeTrey Dentsply) was used to perform the peeling-test. The extremity of a...

The aim of this study is to determine the influence of different characteristic parameters of the human dentine surface on the interaction between dentine and adhesive resin. The dentine surface of 21 freshly extracted teeth (from patients between the ages of 13 and 77 years old) was treated with Total Etch (Vivadent etching gel) and...

Carbon fibre plates (20 x 5 mm) were characterised by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray-induced photoelectron spectroscopy (XPS). The 90 degrees peeling test was used (0.5 mm s(-1)) at the carbon fibre Panavia F-(R) interface. The fracture interfaces were analysed using both SEM and EDS....

National audience

The authors report on a macroscopic and microscopic study of human mandible bone lesions achieved by a single-blade knife and a hatchet. The aim of this work was to complete the previous data (scanning electron microscopy analysis of bone lesions made by a single-blade knife and a hatchet, on human femurs) and to compare the lesions of the...

The authors report on their macro- and microscopy study of bone lesions made by a sharp force instrument (a single blade knife), and a sharp-blunt instrument classified as a chopping weapon (a hatchet). The aim of this work was to attempt to identify the instrument by analyzing the general class characteristics of the cuts. Each weapon was used...

The main aim of this study was to determine the viscosity of four amelo-dentinal adhesives based on the same adhesion principles: the complete elimination of the dentinal smear layer using a 37% orthophosphoric acid and the building of a hybrid layer in a single stage. The secondary aim was to study the filling time for a tubulus using 2...