Orthodontic Treatment Planning

Question 1

what does the IOTN stand for and what is it used for?

Answer 1

Index of Orthodontic Treatment Needed

a scale designed to measure the orthodontic need of a patient

Question 2

what can be some causes of malocclusion?

Answer 2

small teeth = spacing
early loss of deciduous teeth = crowding
digit sucking = proclination and increased OJ

Question 3

what can aid an orthodontist to make an orthodontic diagnosis?

Answer 3

Lateral cephalogram

Question 4

what are the objectives of orthodontic treatment?

Answer 4

to produce an occlusion which is:

• STABLE
• FUNCTIONAL
• AESTHETIC

Question 5

what are the aims of orthodontic treatment?

Answer 5

to try and achieve Class 1 Canine, incisor, molar relationships

reduce/eliminate rotations, spaces, and flat occlusal plane

Question 6

upon examination of a lower arch, what orthodontic issues are likely to be found?

Answer 6

• crowding
• angulation of incisors to the mandibular plane
• angulation of canines / centrelines
• curve of spee

Question 7

epon examination of the upper arch, what orthodontic issues are likely to be found?

Answer 7

• crowding
• angulation of incisors to the maxillary plane
• angulation of the canines / centrelines

Question 8

when doing a crowding assessment, what is important to gauge prior?

Answer 8

• if teeth need to be extracted
• measure space available & space required

Question 9

what are the limitations of orthodontic treatment?

Answer 9

effects of ortho are almost purely dento-alveolar & tooth movement

LITTLE EFFECT ON SKELETAL PATTERN

Question 10

Why is the retention phase important in orthodontics and how can this be achieved?

Answer 10

To prevent relapse

Retainers - need to hold teeth in position after active movement