Principles of Surgical Exodontia

Question 1

Should the base of a flap be wider or narrower than the free margin?

Answer 1

Wider

Question 2

How do you determine the width of an envelope flap?

Answer 2

Should be 2 teeth anterior and 1 tooth posterior to the area of surgery

Question 3

How far from the involved defect should a full thickness incision be placed?

Answer 3

6-8mm

Question 4

Will there be more or less bleeding with a full thickness flap compared to a partial thickness?

Answer 4

Less because subperiosteal is less vascular

Question 5

Should you make a flap buccally or lingually to the Md 3rd molar?

Answer 5

Buccally, because the lingual nerve could be cut if lingual incision is made

Question 6

What structure should you avoid damaging apically of md premolars?

Answer 6

Mental nerve

Question 7

When should releasing incisions be made?

Answer 7

ONLY when necessary

Question 8

Should a releasing incision be made anteriorly or posteriorly to working site?

Answer 8

anteriorly

Question 9

Avoid crossing what when making releasing incisions?

Answer 9

bony prominences (i.e. canine prominence)

Question 10

Releasing incisions should start where?

Answer 10

at the free gingival margin at the line angle of the tooth (not papilla, not prominence)

Question 11

4 corner flaps have how many releasing incisions?

Answer 11

two

Question 12

What kind of flap would you use for apical surgery?

Answer 12

Semilunar flap (made with apex of semilunar shape pointing toward the crown of involved tooth)

Question 13

What kind of flap would you probably use for removing palatal tori?

Answer 13

Palatal Y flap

Question 14

What blade should you use to start a mucoperiosteal flap?

Answer 14

No. 15 blade

Question 15

Where is the blade placed to make a mucoperiosteal incision?

Answer 15

In the sulcus

Question 16

What is used to elevate the mucosa?

Answer 16

No. 9 Molt periosteal elevator

Question 17

When suturing, avoid tension on flap to prevent what?

Answer 17

retraction of wound edges and exposure of bone

Question 18

What is a natural & non-resorbable suture used in dentistry?

Answer 18

silk

Question 19

What is a natural & resorbable suture used in dentistry?

Answer 19

plain and chromic gut

Question 20

What kind of suture is nylon and polypropylene?

Answer 20

non-resorbable & synthetic

Question 21

Should you suture across an empty socket?

Answer 21

No No No

Question 22

Should the needle pass through mobile or fixed mucosa first when suturing?

Answer 22

Mobile flap first

Question 23

Do older or younger patients have more elastic and expandable bone for luxation?

Answer 23

younger

Question 24

Short clinical crowns and bruxers have more or less dense alveolar bone?

Answer 24

More, making luxation harder

Question 25

Should you grasp crestal bone with forceps when trying to extract a tooth?

Answer 25

No, that's ridiculous

Question 26

What steps should you take after tooth removal?

Answer 26

1. smooth sharp bone edges 2. debride/irrigate wound 3. replace flap & suture

Question 27

What is a cryer elevator used for?

Answer 27

Removing sections of posterior teeth (has a point that grabs the sections)

Question 28

Is it crucial to retrieve a tooth root that has fractured upon extraction?

Answer 28

No it can be left behind under certain circumstances

Question 29

What criteria justify leaving a root tip?

Answer 29

- must be small, 5mm or less - tip deeply imbedded in bone - tooth not infected - risk of surgery greater than benefit

Question 30

Should mx or md teeth be removed first?

Answer 30

Maxillary

Question 31

Should posterior or anterior teeth be removed first?

Answer 31

Posterior (canine last after anterior)