Membrane perforation in sinus floor elevation - piezoelectric device versus conventional rotary instruments for osteotomy: an experimental study.

Purpose: Sinus membrane perforation is the most common intraoperative complication of maxillary sinus floor elevation (MSFE) procedures and frequently causes postoperative problems. Piezoelectric devices have been claimed to reduce the frequency of membrane perforations although no clear evidence supports this view.

Materials And Methods: Ten surgeons with different expertise levels performed 80 MSFEs in selected lamb heads, with rotary and piezoelectric instruments following standard protocols.

Simulation for training in sinus floor elevation: new surgical bench model.

Objectives: to describe a bench model (workshop of abilities) for sinus floor elevation (SFE) training that simulates the surgical environment and to assess its effectiveness in terms of trainees' perception.

Study Design: thirty-six randomly selected postgraduate students entered this cross-sectional pilot study and asked to fill in an anonymous, self-applied, 12-item questionnaire about a SFE workshop that included a study guide containing the workshop' s details, supervised practice on a simulated surgical environment, and assessment by means of specific check-lists.

Results: Thirtiy-six fresh sheep heads were prepared to allow access to the buccal vestible.

Lamb ex vivo model for training in maxillary sinus floor elevation surgery: a comparative study with human standards.

Background: Many models have been suggested for surgical training in sinus floor elevation (SFE), but information on key features that provide feedback to the trainee is scarce. The aim of this study is to compare the thickness of the lateral wall of the maxillary sinus (TLWMS) and the thickness of the Schneiderian membrane (TSM) between an animal model and the human standard.

Methods: The observational study used 20 fresh lamb heads.

Gingival mucinous adenocarcinoma of a minor salivary gland.

Background: A 47-year-old male non-smoker with a history of psoriasis sought a consultation because of a painless, hard-on-palpation, 1-cm exophytic lesion with a smooth and speckled surface located on the hard palate adjacent to tooth #12. The radiologic examination revealed no bone destruction. The lesion was clinically diagnosed as a fibrous hyperplasia or chronic pyogenic granuloma.