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Non-Carious Dental Lesions

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Nicolle Dickey

on 29 April 2013

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Transcript of Non-Carious Dental Lesions

Enamel hypoplasia Caused by defect during early tooth formation
Ameloblast disturbance in formation of enamel Non-Carious Dental Lesions Not every damaged tooth structure is carious.
Remember, caries are caused acid created from bacteria. Attrition Wearing away of biting surface of tooth caused by tooth-to-tooth contact Erosion Loss of tooth substance by chemical process-no known bacterial action Non-Carious Dental Lesions What are some other causes of damaged tooth structure? We will examine the four non-carious dental lesion classifications

1. Enamel hypoplasia
2. Attrition
3. Erosion
4. Abrasion/Abfraction Etiologies
Hereditary:Amelogenesis imperfecta
Systemic: Fluorosis is most common
Localized: Single tooth trauma or inflammation of primary tooth interrupts amelogenesis Location: Occlusal, incisal, and proximal surfaces

Occurrence: more common in men, increased prevalence with age

Predisposing factors: psychological, tension, or occlusal interference Appearance:
Initially: small polished facet on cusp tip or ridge, slight flattening of incisal edge
As Progress: cusp height reduction, flattening of occusal plane
Facial and Lingual surfaces
Usually involves several teeth Etiology: Chemical dissolution
chronic vomiting
dietary (sucking on lemons)
environmental (breathing industrial acid through mouth i.e. meth labs) Appearance:
Smooth, shallow, hard, shiny Abrasion / Abfraction Mechanical wearing by forces other than mastication Occurrence/Location:
Exposed root surfaces, cervical margin Etiology:
Mechanical abrasive activity
Abfraction suspicious as predominant cause
Aggressive, horizontal toothbrushing with hard bristles
Abrasive dentifrice Amelogenesis Imperfecta Fluorosis Damaged Primary Roots Injures Permanent Crowns Knowing these 4 types of non-carious lesions allows you make interventions and treatment decisions accordingly. They are not decay, don't treat them as such.

1. Enamel Hypoplasia: Irreversible. Restore.
2. Attrition: Mouth/night guards to protect
3. Erosion: Address and remove cause; daily fluoride tray
4. Abrasion/Abfraction: Soft bristles, adjust TB stroke. Conclusion:
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