External / Internal Resorption (Replogle) Flashcards
How will active root caries feel clinically on exam?
Sticky. ECR will not be sticky
What is a pink spot on a tooth?
Highly vascular resorptive tissue visible through thin enamel
What is the term for the loss of dental hard tissue as a result of odontoclastic/osteoclastic activity…not to be confused with loss of dental hard tissue as a result of caries?
External cervical resorption
How does resorption occur?
Cementum is lost and osteoclasts (or precursors cells) see the dentin and start to resorb it
What teeth are most commonly involved with ECR?
- Max canines
- Max incisors
- Mand first molars
Resorption will be asymptomatic until what point?
Until resorption penetrates through the dentin and predentin barrier
What are some predisposing factors towards external cervical resorption?
- Ortho treatment
- Trauma
- Intracoronal bleaching
- Surgical Procedures
- Periodontal therapy
- Bruxism, etc
What are clinical findings associated with ECR?
- In the cervical region
- A pink spot (though not always pink)
- Tooth normal to cold and EPT
- BOP
- Resorptive cavity with sharp, thin edges
What are radiographic findings of ECR?
- Asymmetric radiolucency with irregular margins at cervical region
- Uniformly round radiolucency centered over the root
- Visible canal
What Heithersey Classification involves a shallow penetration into dentin?
Class I
What Heithersay Classification involves penetration close to the coronal pulp chamber but no extension into root dentin?
Class II
What Heithersay Classification involves extension into the coronal third of the root?
Class III
What Heithersay Classification involves extension beyond the coronal third of the root?
Class IV
What Heithersey Classifications are treatable with flap and restoration?
Class I and II
Which Heithersey Classifications are treatable with NSRCT and flap/restoration?
Class III
