Risks and benefits of ortho treatment

Question 1

What 3 things can impacted teeth cause?

Answer 1

Root resorption, can be associated with cyst formation, supernumeraries can prevent normal eruption

Question 2

What 3 things can anterior crossbite cause?

Answer 2

Tooth wear, gingival recession, displacement on closure

Question 3

What 2 things can a deep overbite cause?

Answer 3

Palatal ulceration, gingival stripping

Question 4

Risk factors for root resorption

Answer 4

Type of tooth movement (prolonged high forces, intrusion, large movements, torque), root form (blunt, pipette, resorbed already), previous trauma, nail biting?

Question 5

What is relapse?

Answer 5

Return of the features of the original malocclusion following correction

Question 6

Features with high risk of relapse?

Answer 6

Diastema/space closure, rotation, instanding upper laterals, lower incisors proclination or crowding, anterior open bite, palatally ectopic canines, class 2 div 2, reduced perio support/short roots

Question 7

Why is it important to provide retainer straight away after treatment for patient with bridge?

Answer 7

If no retainer the abutment holding the pontic likely to relapse

Question 8

What could make loss of vitality during ortho tx more likely?

Answer 8

Previous trauma or compromised tooth (e.g. large/deep restoration)

Question 9

What could be reasons for treatment failure?

Answer 9

Poor diagnosis, poor treatment planning, poor operator technique, poor pt cooperation, unfavorable growth