Hyperplastic resorptions

Question 0

What are the charateristics of internal invasive(replacement) resorption?

Answer 0

very rare
presents as pink spots (botth on labial and palatal)
induced experimentally and requires interference of predentine/dentine layer
radiographically presents as expansion from the root canal area iself to pproduce a large defect

Question 1

what are the types of hyperplastic resorptions?

Answer 1

internal invasive
invasive coronal
invasivve ccervical

Question 2

what are the charaterisctics of invasive coronal resorption?

Answer 2

1) theres normally an undderlying cause e.g. exposed dentine? intrudded primary tooth on successor (produces enamel defects which favors development of invasive coronal resorption)
2) highly irregular resorption when obsevered radiographically
3) can sometimes have superimposed inffeectionis
4) Can sometimes appear as a localised swelling

Question 3

what are the clincal classification of invasive cervical resorption?

Answer 3

Class I: small invasive resorption with shallow penetration in to dentine
Class II: well defined invasive resorption lesion thats penetrated close to coronal pulp chamber but no extension into radicular dentine
always look for the radio-opaque line and possible point of entry
Class III: deeper invasion of dentine by resorbing tissue not only involving coronal dentine bbut also extending into coronal third of the root
Class IV: larger resorptive process taht has gone past the coronal third of the root canal. Sometimes theres a break in the lesion due to laying down of bone

Question 4

what kindd of tissues produces this resorption?

Answer 4

Class I and II, protective layer of pulp, dentine and predentine.
Tissue tends to be very vascular and fibrous. A lot of multinucleated cells.
Class III lesions - pulp nature cchanges. becomes fibroosseous in character. Communicatees with PDL all the way down the tooth.
Interface formed with dentine.

Question 5

how does this differ from internal rooot resorption

Answer 5

resorption of bone, tooth and characteristic cells at pressent. No evidence that this is an inflammatory process.

Question 6

how shouldd internal invasive (replacement) resorption be managed?

Answer 6

Basically, deprive it of blood supply.
Pulpectomy
Prepare tooth using files
Root fill
Follow up

Question 7

What are the clinical presentations of invasive cervical resorption?

Answer 7

1) Pink spot in the tooth which indicates vascular tissue - may appear as a regularity at the gingival margin
2) Can appear like dental caries radiographically, however, irregular margins and a radio-opaque line that demarcates the pulp from the lesion
3) Can sometimes probe into these lesions