Evaluation of the apical extrusion of debris during preflaring with PathFiles and with manual steel instruments. The purpose of this study was to evaluate the amount of debris pushed beyond apex during the preflaring with manual steel and mechanical NiTi instruments. In this study 120 resin endodontic simulators were used. The results of this study show that the Path-Files, during the preflaring, produce less extrusion of debris beyond apex with respect to the K-Files. This would seem to be attributable to the ability of the Path-Files to coronally scroll the debris that are gradually produced during the root canal instrumentation Presented at the 2016 Congress of CDUO (Collegio dei Docenti di discipline Odontostomatologiche)
"Ex-vivo" study on the penetration capacity of a radiopaque solution in the canal system after manual and mechanical pre-flaring. The aim of this study was to evaluate ex vivo the penetration capacity of a radiopaque irrigating solution inside the canal system during the preflaring and the glide-path performed with manual stainless steel (K-File) files and mechanical Nickel-Titanium instruments (PathFile). The results of the present study demonstrate that, in narrow root canals, a mechanical preflaring technique is associated with an easier and earlier penetration of the irrigation solutions in the apical third region compared to a manual preflaring technique. (Award Winning Research Poster at the 2016 Congress of CDUO (Collegio dei Docenti di discipline Odontostomatologiche)
Removal of fiber posts during endodontic retreatments using ultrasonic tips: a comparison between two different endodontic fiber posts. The purpose of this study was to evaluate the temperature changes generated on the radicular surfaces of extracted monoradicular teeth during ultrasonic removal of fiber posts. Results showed that dry use leads to a rapid increase in root surface temperature beyond critical limit, while both air cooling and water spray decreases it to lower and safer values for both of groups. The best results were obtained by water spray cooling. Air or water cooling seems to be essential during the use of ultrasonic tips to reduce the risk of periodontal tissue and bone damage due to an excessive temperature raise. (Award Winning Research Poster at the 2017 National Congress of SIE- Società Italiana di Endodonzia)
Effectiveness of a new generation of endodontic motors on the effectiveness and resistance of NiTi endodontic instruments used in continuous rotation (In progress). The aim of this research is to evaluate how the use of an endodontic motors capable of modifying the type of movement from a continuous rotation to a reciprocating movemen, depending on the torque, can influence the resistance to torsional stresses of various endodontic instruments. It is also evaluated if this type of movement called "Optimum Torque Reverse" allows a better maintenance of the original anatomy of the root canal.
Study on the effectiveness of a new Erbium Yag laser in the disinfection of root canals associated with various irrigation methods (in progress).The aim of this study is to evaluate an Erbium Yag Laser equipped with a new generation tip suitable for endodontic use. The study will be performed on extracted teeth, endodontically prepared, sterilized and infected with the bacterial and fungal species most commonly implicated in pulpo-periapical pathologies. The laser will be used associated with various endodontic irrigation procedures.
A SEM study on the effects of an Erbium Yag laser used in endodontic irrigation procedures on dentinal walls of infected dental elements (in progress). In particular, the effect on the dentinal tubules and on the bacteria contained in them will be observed.Furthermore, the measurable temperatures on the external surface of the tooth will be evaluated following the introduction of the laser tip at different depths within the root canal.
Lastest researchers in restorative dentistry
Color and translucency of composite resins (in progress). In particular the behaviour of resin based composites as a matter of time and change in color and translucency due to external agents (colorants, diet, etc.) Spectrophotometric study are performed on composites specimen.
Finishing and polishing techniques (in progress). Surface analysis is performed with a profilometer and a gloss-meter. Several finishing and polishing techniques are analyzed in order to achieve the best and long-lasting surface of resin based composites.
Habits of dentists related to operative dentistry procedures. Through surveys and interviews data is collected and compared along time to understand which restorative procedure is changing during time. Type of adhesives (etch and rinse, self-etch, universal), type of restorative materials (bulk, no-bulk), number of shades, finishing and polishing procedures are investigated.