treatment planning for indirect fixed restorations

Question 1

Scaling

Answer 1

removal of supragingival calculus

Question 2

root planing

Answer 2

debriding root surfaces with a curette

Question 3

are mobile teeth always a sign of disease?

Answer 3

no, it may be a response to abnormal forces and it doesnt always need corrective treatment

Question 4

biologic width definition

Answer 4

the dimension of soft tissue which is attached to the portion of the tooth coronal to the crest of alveolar bone

Question 5

whats the average histological width of the connective tissue attachement?

Answer 5

1.07mm.

Question 6

whats average epithelial length?

Answer 6

.97mm.

Question 7

whats total average attachment?

Answer 7

2.04mm, this is the biological width

Question 8

what would happen if you prepped a crown and the margin was within 1mm of the alveolar crest?

Answer 8

This would cause inflamation and the bone would resorb to restore the normal biological width length. this would be a good time to refer to a periodontist for crown lengthening.

Question 9

before you send a pt to get crown lengthening, what should you do to the margin?

Answer 9

define it. Make sure the periodontist knows where you are placing the margin so he knows where to extend the crown to.

Question 10

how much space is needed between an implant and tooth?

Answer 10

1.5mm

Question 11

how much space is needed between 2 implants?

Answer 11

3mm.

Question 12

what length is needed interocclussaly for proper implant placement?

Answer 12

6mm

Question 13

how far above the adjacents tooths CEJ should the implant be?

Answer 13

2mm

Question 14

whats a ferrule?

Answer 14

circumferential ring of sound tooth structure that is enveloped by the cervical portion of the crown restoration

Question 15

whats the ferrule effect?

Answer 15

at the ferrule there needs to be a minimum of 1.5-2mm. of sound dentin height between the core( build up inside coronal structure were tooth is missing) and crown margins