Bone damage induced by different cutting instruments - An in vitro study

Umberto Romeo, Alessandro del Vecchio, Gaspare Palaia, Gianluca Tenore, Paolo Visca, Claudia Maggiore

Research output: Contribution to journalArticlepeer-review


The aim of this study was to compare the peripheral bone damage induced by different cutting systems. Four devices were tested: Er:YAG laser (2.94 mm), Piezosurgery, high-speed drill and low-speed drill. Forty-fve bone sections, divided into 9 groups according to different parameters, were taken from pig mandibles within 1 h post mortem. Specimens were fxed in 10% buffered formalin, decalcifed and cut in thin sections. Four different parameters were analyzed: cut precision, depth of incision, peripheral carbonization and presence of bone fragments. For statistical analysis, the Kruskal-Wallis test was applied to assess equality of sample medians among groups. All sections obtained with the Er:YAG laser showed poor peripheral carbonization. The edges of the incisions were always well-shaped and regular, no melting was observed. Piezosurgery specimens revealed superfcial incisions without thermal damage but with irregular edges. The sections obtained by traditional drilling showed poor peripheral carbonization, especially if obtained at lower speed. There was statistically signifcant differences (p

Original languageEnglish
Pages (from-to)162-168
Number of pages7
JournalBrazilian Dental Journal
Issue number2
Publication statusPublished - 2009


  • Bone biopsy
  • Laser
  • Peripheral damage
  • Piezosurgery

ASJC Scopus subject areas

  • Dentistry(all)


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