Attrition - Omr
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Transcript of Attrition - Omr
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ATTRITION OF TOOTH
Chinu Maria Cyriac
IV BDS
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ATTRITIONAttrition is the pathological wear
away of the teeth because of tooth
to tooth contact as in mastication
or parafunction
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Types
oPhysiological attrition
oPathological attrition
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Physiological Attrition
Due to normal aging process
Fairly constant & proportionate to age of the
individual
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Pathological Attrition
occurs due to certain abnormalities in occlusion,
chewing pattern or due to some
structural defects in the teeth
Tooth wear not constant
Not proportionate to age of the individual
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Mild Attrition ModerateAttrition
Severe Attrition
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Etiology Abnormal occlusion
* Developmental-Eg: Malocclusion & crowding of teeth
*Acquired-
Eg: Extraction
Abnormal chewing habits*Para functional chewing habits like Bruxism
*Ch. Persistent chewing of coarse & abrasive foods like tobacco & betel nut
Occupation
* Workers exposed to abrasive dust
Structural defects
* Amelogenesis Imperfecta
* Dentinogenesis Imperfecta
where hardness of Enamel & Dentin is reduced=>tooth more prone to Attrition
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Clinical Features Sex More in men than in women
Sites # Deciduous as well as Permanent
# Occurs on occlusal incisal & proximal surfaces of
the teeth
Occlusal Attrition
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Physiological Attrition
Onset-Begins with
*Incisal edge of incisors*Palatal cusp of Max. M &*Buccal cusp of Mand. M*Proximal surface of teeth in the contact point areas
Color of the teeth When the dentin gets exposed it generallybecomes discolored ie Brown
Signs- Reduction of* Vertical tooth height -Flattening of
occlusal inclined plane
* horizontal tooth width shortening oflength of dental arch
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Pathological Attrition
Severe tooth loss
Attrition of occlusal surface of the teeth leads to reduction
in occlusal face height
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Radiographic Features
Crown -Smooth wearing of incisal & occlusal surfaces ofinvolved teeth is evident by shortened crown image
Pulp - sclerosis of pulp chamber & canals is seen due to
deposition of secondary dentin which narrows the pulpcanals
Periodontal ligament widening of PDL space &
hypercementosis
Alveolar bone - some loss of alveolar bone
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Flattening of cusp
Narrow Pulp canal
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Corrective methods- Correction of Malocclusion,stoppage of tobacco chewing habit. Restriction of diet
to non coarse food
Habit breaking appliance construction of occlusal
guard to correct parafunctional habits like Bruxism
Management
http://www.google.co.in/imgres?imgurl=http://2.bp.blogspot.com/_2rcJlsERZjc/S6vHHEss9bI/AAAAAAAAAJs/UBNtvX4U4G0/s1600/Guarda+2.jpg&imgrefurl=http://prostheticdentallaboratory.blogspot.com/&usg=__JFYCRfibAjTTHvkgOnoAtd7YQHs=&h=400&w=400&sz=17&hl=en&start=11&zoom=1&tbnid=T7mnZ0PazZ1nmM:&tbnh=124&tbnw=124&ei=yASATouRLcPnrAfN_MztAw&prev=/search?q=occlusal+guards+to+prevent+teeth+grinding&hl=en&sa=X&tbm=isch&prmd=ivns&itbs=1http://www.google.co.in/imgres?imgurl=http://www.drmoorhead.com/wp-content/uploads/2009/01/nightguardex.jpg&imgrefurl=http://www.drmoorhead.com/&usg=__IpklsTMYLw3mZQhN55TFOIKflXg=&h=1024&w=1280&sz=642&hl=en&start=6&zoom=1&tbnid=vxR2IdsTznLdVM:&tbnh=120&tbnw=150&ei=yASATouRLcPnrAfN_MztAw&prev=/search?q=occlusal+guards+to+prevent+teeth+grinding&hl=en&sa=X&tbm=isch&prmd=ivns&itbs=1 -
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Before Treatment After Crown Placement
Protection of tooth by Metal or Metal ceramic crowns
where structural defects( Dentinogenesis Imperfectaor Amelogenesis Imperfecta ) exists.
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ReferenceText book of Oral Medicine Ghoms
Shafers
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