1/27/2020 1 What’s In A Name? Feline Resorptive Disease and Feline Chronic Gingivostomatitis Michaela P. Meissner, BS, LVT, VTS (Dentistry) Nomenclature Caries Feline Odontoclastic Resorptive Lesions (FORLS) Resorptive Lesions (RL) Cervical Lesions Neck Lesions Tooth Resorption (TR)-AVDC Feline Resorptive Disease Very common in cats Prevalence rate of 20% - 70% (depending on cat population and investigative methods) Seen more commonly in older cats Feline Resorptive Disease Tooth Resorption (TR) ◦ Process in which the dentin in a tooth erodes and eventually become irreparably damaged Radiographic Types 1-3 Stages 1-5 Stage 1 (TR1) Mild dental hard tissue loss Cementum or cementum and enamel 1 2 3 4 5 6
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What’s In A Name? TR and Stomatitis.pdfFeline Resorptive Disease and Feline Chronic Gingivostomatitis Michaela P. Meissner, BS, LVT, VTS (Dentistry) Nomenclature Caries Feline Odontoclastic
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1/27/2020
1
What’s In A Name?
Feline Resorptive Disease
and
Feline Chronic Gingivostomatitis
Michaela P. Meissner, BS, LVT, VTS (Dentistry)
Nomenclature
Caries
Feline Odontoclastic Resorptive Lesions
(FORLS)
Resorptive Lesions (RL)
Cervical Lesions
Neck Lesions
Tooth Resorption (TR)- AVDC
Feline Resorptive Disease
Very common in cats
Prevalence rate of 20% - 70% (depending
on cat population and investigative
methods)
Seen more commonly in older cats
Feline Resorptive Disease
Tooth Resorption (TR)
◦ Process in which the dentin in a tooth erodes
and eventually become irreparably damaged
Radiographic Types 1-3
Stages 1-5
Stage 1 (TR1)
Mild dental hard
tissue loss
Cementum or
cementum and
enamel
1 2
3 4
5 6
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2
Stage 2 (TR2)
Moderate dental
hard tissue loss
Cementum or
cementum and
enamel
Loss of dentin
that does not
extend to the
pulp cavity
Stage 3 (TR3)
Deep dental hard
tissue loss
Loss of dentin that
extends to the
pulp chamber)
Most of the tooth
retains its integrity
7 8
9 10
11 12
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3
Stage 4a (TR4a)
Extensive dental
hard tissue loss
Loss of dentin that
extends to the pulp
chamber
Most of the tooth
has lost its integrity
Crown and root
are equally affected
Stage 4b (TR4b)
Extensive dental
hard tissue loss
Loss of dentin that
extends to the pulp
cavity
Crown is more
severely affected
than the root
Stage 4c (TR4c)
Extensive dental hard tissue loss
Loss of dentin that extends to the pulp chamber
Most of the tooth has lost its integrity
Root is more severely affected than the crown
13 14
15 16
17 18
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4
Stage 5 (TR5)
Remnants of dental
hard tissue are
visible only as
irregular
radiopacities
Gingival covering is
complete
Radiographic Type 1
Focal or multifocal radiolucency
Normal periodontal ligament space
19 20
21 22
23 24
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5
Type 1 Type 1
Radiographic Type 2
Narrowing or disappearance of
periodontal ligament space
Radiographic Type 3
Both Type 1 and Type 2 present in the
same tooth
25 26
27 28
29 30
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Etiology Theories
Local pH changes
Inflammation associated with periodontal
infection
◦ TR1?
High levels of vitamin D in diet
Diagnosis
Signal tooth
◦ Mandibular third premolar
Diagnosis
Signal tooth
◦ Mandibular third premolar
Clinical signs
◦ Usually none
◦ Orally exposed resorptive lesion
◦ Gingiva or granulation tissue growing up the
crown
31 32
33 34
35 36
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Diagnosis
Intraoral
Radiographs
Treatment
Do nothing
Treatment
Do nothing
Restoration with glass ionomer or root
canal therapy
Treatment
Do nothing
Restoration with glass ionomer or root
canal therapy
Crown Amputation
37 38
39 40
41 42
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Treatment
Do nothing
Restoration with glass ionomer or root
canal therapy
Crown amputation
Surgical extraction
Prevention
43 44
45 46
47 48
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9
Feline Chronic
Gingivostomatitis
Definitions
Gingivitis
◦ Inflammation of the gingiva
Stomatitis
◦ Inflammation of the mucous lining of any of the structures in the oral cavity
Gingivostomatitis
Inflammation and proliferation of the gingiva and oral mucosa