April 28th, 2009 by admin
Calcium hydroxide was introduced into dentistry
in 1920 (Herrmann). It is a starkly alkaline
substance with a pH value of 12.5. In an
aqueous solution, Ca(OH)2 dissociates into Read the rest of this entry »
April 28th, 2009 by admin
An interim dressing is recommended for infected
and necrotic root canals in order to
eliminate any bacteria that remain following
canal instrumentation, to release or eliminate
any endotoxin-elicited inflammation of the
periapical tissues, to dissolve any tissue debris Read the rest of this entry »
April 28th, 2009 by admin
Canal rinsing should:
• float dentin chips out of the canal, therefore
preventing blockage
• dissolve vital and also necrotic tissue debris
in those areas not accessible for manual instrumentation Read the rest of this entry »
April 28th, 2009 by admin
Numerous scientific studies have demonstrated
that it is not possible to achieve a sterile
root canal even after thorough cleansing,
instrumentation, and rinsing. This fact has led
to long discussions concerning microorganisms Read the rest of this entry »
April 28th, 2009 by admin
In the early days of power-driven root canal
instrumentation, the frequent incidence of instrument
fracture represented a serious problem.
The majority of fractures occurred when Read the rest of this entry »
April 28th, 2009 by admin
Straight root canals instrumented manually or
with sonic or ultrasonic files can be instrumented
completely during the first appointment.
On the other hand, dilacerated canals
will not be completely freed of infected pulpal
tissue debris, regardless of the technique employed. Read the rest of this entry »
April 28th, 2009 by admin
The K3 endodontic instruments are NiTi files
of ISO sizes 15–60, with conicities of 4, 6, 8,
and 10%. Files with 8% or 10% conicity serve as
initial canal orifice wideners.
A special characteristic of the instruments Read the rest of this entry »
April 28th, 2009 by admin
The FlexMaster system exhibits a triangular
convex cross-section, with sharp cutting
edges. In contrast to other NiTi systems, the
FlexMaster’s massive instrument core should
guarantee reduced danger of breakage because Read the rest of this entry »
April 28th, 2009 by admin
The original Greater-Taper or GT Rotary instrument
set derives from Buchanan (1996), and is
available commercially from the Tulsa Dental
Company, mainly for the American market. It
consists of six instruments (GT Rotary files 06
#20, 08 #20, 10 #20 as well as GT accessory files Read the rest of this entry »
April 28th, 2009 by admin
One of the first NiTi systems was the ProFile
instruments, which have proved themselves
in daily practice for many years. The instrument
set consists of orifice shapers (19mm
long files with 5–8% conicity), the conical Pro-
File 06 with a 6% conicity in sizes 15–40, as Read the rest of this entry »
