resorption

Question 1

MOA in resorption

Answer 1

osteoclasts/cementoclasts/dentinoclasts destroy mineralized structures, create acidic environment, enzymes digest oragnic matrix

Question 2

common etiologies of tooth resorption

Answer 2

chronically inflamed or necrotic pulps

replanted or transplanted teeth (trauma)

excessive traumatic forces (ortho, trauma)

orthodontic tooth movement

embedded teeth

teeth adjacent to tumors and cysts

idiopathic

Question 3

t/f: minor resorptions are common an are found on basically all teeth

Answer 3

true on the roots

Question 4

most normal external resorption (of dentin) in root canal and on peripheral portion of root is replaced by ___

Answer 4

cementum

Question 5

small superficial defects in the cementum and underlying dentin that undergo repair by deposition of new cementum

Answer 5

surface resorption

Question 6

minor surface resorption location, cause

Answer 6

usually self limiting

most often periodically but not visible on radiographs

common after ortho mvmt/trauma

Question 7

internal or external pathologic loss of tooth structure and possibly bone, resulting in a defect, occurs as a result of microbial infection; characterized radiographically by radiolucent areas along the root

Answer 7

inflammatory resorption

Question 8

internal resorption originates from

Answer 8

cells of the pulp (caused by inflammation of the pulp)

Question 9

in internal resorption, what is usually status of pulp

Answer 9

vital (but can become necrotic if resorption penetrates externally)

Question 10

how does internal resorption appear on xray

Answer 10

symmetrical ballooning within the canal that does not “move” relative to root canal/pulp chamber on angled films

Question 11

how to treat internal resorption

Answer 11

RCT to try to stop process

Question 12

where does external resorption intiate

Answer 12

periodontium (cells of PDL) and/or result of necrotic pulp

Question 13

etiology of external resorption

Answer 13

trauma

decay/necrosis

Question 14

does external resorption move on films

Answer 14

yes

Question 15

tx for external resorption

Answer 15

RCT with CaOH2 to help cells of PDL

Question 16

also referred to as sub epithelial external resorption

Answer 16

cervical resorption

Question 17

tooth with a pink hue might have

Answer 17

cervical resorption

Question 18

cervical resorption pulp status

Answer 18

usually vital

Question 19

etiology of cervical resorption

Answer 19

ortho, bleaching, herpes, genetics, cats, systemic disease

Question 20

management of cervical resorption

Answer 20

get good images

microscope needed

surgical access to area

remove affect tooth structure, if pulp involved to RCT

restore affected area

Question 21

replacement resorption definiton

Answer 21

ankylosis

pathologic loss of cementum, dentin, PDL with subsequent replacement of such structures resulting in fusion of bone and tooth

Question 22

transient apical breakdown definiton

Answer 22

response to tooth luxation consisting of radiographic apical bone root resorption that resolves spontaneously without treatment

Question 23

do you need to treat transient apical breakdown

Answer 23

no