Scanning electron microscopic analysis of the integrity of the root-end surface after root-end management using a piezoelectric device : a cadaveric study
Articolo
Data di Pubblicazione:
2010
Citazione:
Scanning electron microscopic analysis of the integrity of the root-end surface after root-end management using a piezoelectric device : a cadaveric study / M. Del Fabbro, I. Tsesis, G. Rosano, M. Bortolin, S.L.M. Taschieri. - In: JOURNAL OF ENDODONTICS. - ISSN 0099-2399. - 36:10(2010 Oct), pp. 1693-1697. [10.1016/j.joen.2010.06.028]
Abstract:
Introduction: The introduction of piezoelectric instruments
in endodontic surgery allowed clinicians to
manage the bone tissue with precision reducing the
risk of damaging soft tissues. Although such instruments
can also be used to prepare root-end cavity, few information
is available on the effect of piezosurgery on dentine.
This cadaveric study investigated the integrity of root
apices after root-end cavity preparation by piezoelectric
instruments at different device settings. Methods: Fifty
maxillary anterior teeth underwent endodontic treatment
and apical resection in situ. Ten teeth were used as
control. Retrograde cavities were prepared in 40 teeth
(10 per group). In three groups, the piezoelectric device
was set at constant vibration mode (CV), and three
power levels were used. In another experimental group
(n = 10), vibration + pulsation mode (VP) was selected,
and low power was used. Each root was duplicated and
analyzed by scanning electron microscopy for the presence
of cracks and marginal chipping. Results: The
number of cracks was significantly higher in the VP
group, whereas no significant difference was found
among CV groups. No difference between groups was
found for crack type. The VP group showed a significantly
poorer quality of cavity margin respect to the CV groups.
Conclusion: Constant vibration mode is recommended
for retrograde preparation with piezosurgery.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Apical surgery; piezosurgery; quality of cavity margin; root-end fracture; root-end surface; scanning electron microscopic analysis
Elenco autori:
M. Del Fabbro, I. Tsesis, G. Rosano, M. Bortolin, S.L.M. Taschieri
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