INTRODUCTION
Poly-D,L-Lactic Acid (PDLLA)
is a new biodegradable and biocompatible semi-crystalline polymer,
composed of a 50/50 mixture of D and L-isomers of polylactic acid. It
has been used either as a vehicle for drug delivery, or in dentistry and
in craniomaxillofacial surgery for bone regeneration and tissue
engineering (pe. refining the facial contours after traumatic injuries).1 Its peculiar characteristics are represented by an
extended resorption time and by unique physical and mechanical
properties: it is prepared on the operating table as a malleable
material that can be adjusted to the surgical needs and that solidifies
after a few minutes, becoming suitable to screw fixation to the skull.1