Ortho prevention

Question 1

why can fixed appliances cause demineralisation?

Answer 1

predispose to plaque accumulation - impedes cleaning

white markings - cavitation

Question 2

what should be done pre tx r.e caries?

Answer 2

rev OH and diet

Question 3

prevention of demineralisation?

Answer 3

F MW during tx
prevent or remove stagnation areas
reduce flash around brackets
GI on bonds - F release

Question 4

what is the average root resorption seen in pts?

Answer 4

1mm loss

Question 5

what teeth are most commonly affected by root resorption?

Answer 5

anteriors

Question 6

what increases the risk of root resorption during tx?

Answer 6

pts with prev resorption
prev trauma
root filled may be at a greater risk

Question 7

how to prevent root resorption?

Answer 7

lighter forces
shorter tx
if at risk - repeat radiographs every 6 months

Question 8

what is the pain on fitting of a brace due to?

Answer 8

transient pulpal ishcaemia

Question 9

tooth movement may cause what periapically?

Answer 9

a flare up of a tooth with periapical history

Question 10

what puts a pt at risk for pulpal damage?

Answer 10

prev trauma - increased risk of pulpitis
trauma during tx
rotary instruments

Question 11

how to manage pulpal problems?

Answer 11

pulpal ischaemia 2-7 days post fitting

paracetamol

Question 12

why is ibuprofen contra indicated to ease ortho pain?

Answer 12

may impede movement

Question 13

why is gingivitis a risk with ortho?

Answer 13

increased gingival inflammation due to reduced access for cleaning
apical migration of perio attachment and alv bony support during tx

Question 14

why might perio problems require ortho?

Answer 14

lower incisor in crossbite can lead to attachment loss

Question 15

what might cause palatal inflammation?

Answer 15

a removable appliance

Question 16

if reduced perio support during tx what should be done?

Answer 16

lower strength of forces

Question 17

pts should have what to reduce gingivitis risk during ortho tx?

Answer 17

3 monthly scale and polish

Question 18

what soft tissue damage might an appliance cause?

Answer 18

traumatic ulceration
friction against appliance
archwire not tucked out of way
clumsy instrumentation

Question 19

what can be used to ease pain of ulceration?

Answer 19

wax

chlorhexidine

Question 20

how is headgear made safer?

Answer 20

neck strap to prevent displacement

prevention of recoil of headgear

Question 21

what are some problems with implants?

Answer 21

(used as temp. anchorage)
poor success as no oseo integration
risk of perforation of roots - infection

Question 22

what may pts have an allergy to?

Answer 22

nickel or latex

Question 23

what could cause burns in ortho?

Answer 23

chemical - etch

physical - handpieve overheating

Question 24

why can tx end up being prolonged?

Answer 24

failed apps
not wearing appliance or elastics as advised
breakages

Question 25

why can there be problems with an essix retainer?

Answer 25

can fracture easy

Question 26

why can there be problems with a hawley retainer?

Answer 26

not good at rotation maintenance

Question 27

why can there be problems with a bonded retainer?

Answer 27

reduced access for cleaning