Morphology Pulp disease Indication Contraindiction ... filePulpitis acuta purulenta partialis...
Transcript of Morphology Pulp disease Indication Contraindiction ... filePulpitis acuta purulenta partialis...
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Endodontics I.
Morphology
Pulp disease
Indication
Contraindiction
Instrumentarium
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Endodontics
Pulp and periodontal diseases –
diagnosis, therapy, prevention
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Aim of endodontic treatment
Healing of pulp diseases or removal
bacteria from the root canal system
and regeneration of damaged periodontal
tissues. (Canal shaping, cleaning and filling)
„ Endodontist helps nature only “
W.D.Miller
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Endodoncie I.
Morphology
Onemocnění zubní dřeně
Indikace a kontraindikace
endodontického ošetření
Instrumentarium
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Morphology
Enamel
Dentin
Cementum
Periodontium
Pulp
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Meyer 1962
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3D
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Meyer´s conclusions
The root canal is not round but oval (long
axis mesiodistal)
The root canal does not go straight but it
deflects distal
The outfall is not on the top of the root but
below (distal or distooral)
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Meyrś conclusions
The root canal between apical constriction and
apical foramen has divergent walls
The root canal system has usually more orifices
(ramifications)
The ramifications are situated mostly in apical
area (first apical mm)
All foramina are situated in cementum
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Basic forms of the root canal
systém (Weine)
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Apical morphology
1. X – ray apex
2. Foramen apicale
3. Apical constriction
4. Periodontal ligament
5. Root cementum
6. Dentin
Acc. to Guldener a Langeland
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Canal shaping terminates
in apical constriction Small communication
Less risk of periodontal damage
Prevention of overfilling
Prevention of apical transport of infectious
material
Possibility of good bacterial decontamination
Possibility of good condensation of the root filling
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Configuration of apical
constriction
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X- ray apex
Real situation
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Macrocanal system
Microcanal system
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Endodont: dentin and pulp
(morphological and functional unit)
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Odontoblasty
Predentin
Dentin
Dental pulp
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Defense mechanisms of the pulp
Sclerosis
Tertiar dentin
Dentin bridge
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Pulpodentinální orgán - endodont
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Pulp diseases
Inflammation - pulpitis
Consequences
- Necrosis (dental pulp became necrotic – it is not
vital, the blood circulation stopped)
- Gangraena (infected necrosis, typical smell)
- Apical periodontitis (the inflammation reached
periodontal space)
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Reasons
Bacteria
Mechanical irritants (overinstrumentation,
trauma)
Chemické (esp. phenolic based inracanal
medicaments, overfilling,irrigants)
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Classification of pulp diseases
Histopatological
Hyperemia pulpae
Pulpitis acuta serosa partialis
totalis
Pulpitis acuta purulenta partialis
totalis
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Classification of pulp diseases
Histopatological
Pulpitis chronica clausa
aperta
ulcerosa
polyposa
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Classification of pulp diseases
Clinical
Reversible pulpitis
Pain does not linger after stimulus is removed
Pain is difficult to localize
Normal periradicular appearance
Teeth are not tender to percussion
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Classification of pulp diseases
Clinical
Irreversible pulpitis
Pain may develop spontaneously or from
stimuli
In later stages heat is more significant
Response lasts from minutes to hours
When the periodontal ligament is involved, the pain
is localized
A widened periodontal ligament may be seen in later stages
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Diagnosis
History
Presenting complaint
Medical history
Dental history
Pain history
Location Type and intensity of pain Duration Stimulus Relief (analgetics, antibiotics, sipping cold drinks)
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Diagnosis
Clinical examination
Extraoral (swelling, redness, extraoral sinuses,
lymph nodes, degree of mouth opening)
Intraoral examination
Swelling, redness,palpation, percussion, sinus
tract examination, teeth mobility,pockets
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Diagnosis
Clinical examination
Pulp sensitivity tests, radiographic
examination, transillumination.
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Endodontic treatment Methods that keep the dental pulp vital
- Posible only whed dental pulp does not have any
clinical symtoms – no spontaneous pain.
- Calcium hydroxide is used.
The methods are:
Indirect pulp capping
Direct pulp capping
Pulpotomy (partial or total)
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Indirect pulp capping
Indication:
Dental caries is deep (close to dental pulp)
Contraindication:
Spontaneous pain
Procedure:
A small amount od calciumhydroxide
is placed itno the deepest part of the cavity
Base plus filling afterwards
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Ca (OH)2
pH 12,5
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Intermittent excavation
Indication: Large caries, big amount of carious
dentin, risk of perforation during preparation.
Contraindication: Spontaneous pain
Procedure:
Preparation, some carious dentin is left, calcium
hydroxide and temporary filling is placed.
Approximately after 6 months the cavity is open
again, excavation of carious dentin finished and
the filling is placed.
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Intermittent excavation
Calcium hydroxide is used for improving of
healing of dental pulp – reparative dentin is
formed during the period of 6 months and there
is no risk od perforation.
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Direct pulp capping
Indication: small perforation to the pulp due to
preparation or trauma.
Contraindication: Large perforation, perforation
in carious dentin, spontaneus pain.
Procedure:
Perforation must be in non carious area. A small
amount of calcium hdyroxide is placed on the
perforation, base and filling afterwards.
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Pulpotomy
Partial or total removal of dental pulp from the
pulp chamber.
Indication: Trauma in permament teethe thas do
not finished the development of the root. These
procedure can keep dental pulp vital in the root
canal and the tooth can finish the roor
development.
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Pulpotomy - contraindication
Permanent teeth that finished the development
of the root. In these cases is better to do
endodontic treatment (root canal shaping,
cleaning, filling).
Pulpotomy – procedure:
See direct pulp capping
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Calcium hydroxide
High pH – 12,5, suspension or cement
Can help to heal the inflammation if placed into
the cavity
Can improve formation of dentin – the
perforation can close with dentin (dentin bridge)
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Direct pulp capping
Small
perforation
Surrounded with
non carious
dentin
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Pulpotomy
Pulp removed
partially or totally
From the pulp
chamber.