Dia 1

1
REPARING CEMENT
The treatment for accidents and endodontic
complications
2
MTA- Angelus

• 1. DESCRIPTION
• MTA-Angelus is an endodontic cement composed of
  several mineral oxides. It is indicated specially
  for root lateral trepanations treatment and
  furcation, internal re-absorptions, pareodontics
  surgeries, retro obturation, direct pulp
  protection, pulpotomy in incomplete root
  development teeth.
• 1.1. Main Advantages MTA-Angelus presents great
  advantages relating to amalgam and cements based
  on zinc oxide and eugenol
• Excellent marginal sealer which avoids bacterial
  migration and tissue fluids penetration to the
  interior of the radicular canal
• Radicular perforations biological enclosing and
  furcation enclosing through induction of
  peri-radicular cement formation
• Induction of dental barrier formation used upon
  the pulp
• Utilization in locals with presence of relative
  humidity, without lost of its properties.
  Different of other materials which demand an
  operatory field completely dry, normally
  difficult to get, principally in cases like
  pareodontics surgeries and retro-obturation.

3
a- Put one measure of powder and one drop of
distilled water upon a sterilized glass plate b-
Spatulate both for 30 seconds until the perfect
homogeneity of the components. The cement got
must have a sandy consistency, similar to
amalgam, but more humid c- Insert the
spatulated cement in the place desired, using a
sterilized amalgam-place or another professional
instrument of your preference d- Condensate the
material inside the dental cavity.
4
(No Transcript)
5
d. MTA-Angelus preparing, application into the
perforation and condensation of the material with
condensing equipments or with sterile cotton
balls (Fig. 02)
6
(No Transcript)
7
3.2. RADICULAR PERFORATIONS TREATMENT BY INTERNAL
RE-ABSORPTION (by
means of canal)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
( TIP ) Important A reinforcement on the canal
walls are recommended if they happen to be too
thin, utilizing composite resins for the canal
filling
22
(No Transcript)
23
4. COMPOSITION SiO2 ,K20, Al2O3, Na2O,
Fe2O3, SO3, CaO, Bi2O3,MgO and unsolved residues
(crystalline silica, calcium oxide and potassium
sulfate and sodium). 5. IMPORTANT
PROPERTIES 5.1. Chemic-Physic Property In contact
with water it becomes a little colloidal gum
which solidify itself, forming a rigid structure
in an interval of 10 minutes.
5.2. Hydrogeneization Potential (pH) Its PH is
highly alkaline (12,0) avoids the bacterial
growth, keeping its anti bacterial potential for
a long period.
5.3. Radio-opacity The MTA-Angelus radio-opacity
is superior than the dentines and bone tissue,
and near to the guta perchas, facilitating its
visualization in operatory radiographic control
and preservation.
24
5.4. HARDENING TIME The MTA-Angelus hardening
time occurs in 10 minutes.
5.5. COMPRESSION RESISTANCE The compression
resistance after 28 days is of 44,2 MPa. Its
resistance is under very acceptable values,
considering that it wont have direct occlusal
load in the applied areas.
5.6. SOLUBILITY It doesnt present significant
signals of solubility in contact with humidity,
guaranteeing a excellent marginal closing.
25
5.7. SEALING POWER AND BACTERIAL
MICRO-INFILTRATION The MTA-Angelus sealing power
was tested through in vitro technique for
evaluation of the coloring infiltration quantity
in the dentine interface - MTA-Angelus. The
result was a little grade of coloring
infiltration. So, we conclude that the material
presents a high sealing power, getting difficult
the bacterial infiltration, once the bacterias
have bigger dimensions than the coloring
molecules.
26
5.8. EXTRAVASATING The presence of material
outside de operatory cavity during the procedures
of radicular perforation obturation, overcoming
the periodontal linking, will result into an
inflammation and traumatic lesion, consequently,
delaying in the scar process.
5.9. RESISTANCE TO THE MOVEMENT MTA-Angelus has a
good adherence capacity in the dentine walls
becoming, by this reason, resistant to
dislocation forces. It may also be indicated to
furcation perforations. In this case it must be
covered with a intermedium restoration material,
before the final restoration material.