MTO

Question 1

Indications for interceptive treatments 1-6

Answer 1

1) Infraocclusion
2) Mesially erupted permanent tooth
3) Lateral cross-bite
4) Frontal cross-bite
5) Aplasia
6) Supernumerary tooth

Question 2

Indications for interceptive treatments 7-11

Answer 2

7) Open bite
8) Diasthema medianum
9) Incisor protrusion / retrusion
10) Incisors eruption problems
11) Crowding

Question 3

Therapy of crowding

Answer 3

Expansion of maxillary arch
Lingual arch appliance
IPR
Hotz serial extraction

Question 4

Etiology of incisor protrusion

Answer 4

Hereditary
Bad habits
Persistant milky tooth
Lack of space
Frontal cross bite
Extreme deep bite

Question 5

Problems associated with mixed dentition

Answer 5

1. Premature loss of milky teeth
2. Retained milky teeth
3. Infra-occluded primary molars
4. Impacted 1st permanent molars
5. Dilaceration
6. Supernumerary teeth
7. Habits
8. 1st permanent molars of poor long-term prognosis
9. Median diastema

Question 6

Advantages of interdisciplinary approach

Answer 6

+ idealizes and simplifies therapy
+ improves the overall treatment prognosis
+ turns problems into advantages
+ prevents unnecessary procedures
+ shortens treatment time
+ enhances individual team member’s result
+ enhances professional relationships
+ increases satisfaction of patient and doctors

Question 7

Pediatrics and ortho

Answer 7

o Dental traumatology
o Developmental abnormalities treatment
o Occlusal developmental abnormalities
o Dental aspects of syndromes

Question 8

Operative and ortho

Answer 8

o Dental fractures (e.g. orthodontic crown lengthening)
o Subgingivally destructed crowns
o Moving of dissected teeth

Question 9

Prostho and ortho

Answer 9

o Axis correction
o Crossbite treatment
o Ectopic teeth
o Intrusion of elongated teeth
o Absence of tooth germs  
o Space opening / Space closure
o TMJ dysfunction

Question 10

Oral surgery and ortho

Answer 10

o Implantation
o Impacted and retained teeth
o Supplementary / Supernumerary teeth 
o Dysgnathic disorders and developmental jaw abnormalities
o Clefts
o Mandible fractures

Question 11

Indications of space closure

Answer 11

• Excessive frontal crowding
• Wide, intact middle incisors
• Not pointed canines
• Lack of intercuspidation of the canine
• Tendency towards mesialization on a given side

Question 12

Contraindications of space closure

Answer 12

• Excessive diasthema
• Short, narrow central incisors
• Ideal canine contact
• Injured neighbouring teeth
• Missing premolar on the affected side

Question 13

Macroesthetics - Face esthetics

Answer 13

 Profile
 Vertical proportions
 Lip Fullness
 Chin + Nasal projections
 Other characteristics

Question 14

Miniesthetics - Smile esthetics

Answer 14

 Incisor display
 Buccal corridor
 Smile symmetry
 Crowding
 Smile Arc 
 Vermillion display

Question 15

Microesthetics - Teeth esthetics

Answer 15

o Gingival shape + contour
o Black triangles
o Shape + proportions

Question 16

Frequency of unerupted teeth

Answer 16

 Lower wisdom teeth
 Upper canine
 Upper wisdom teeth
 Lower 2nd premolar
 Upper central incisors
 Lower canine

Question 17

Sequence of complex treatment

Answer 17

• Treatment planning
• Preoperative orthodontics
• Definitive treatment plan
• Model surgery
• Surgical intervention
• Postoperative orthodontics
• Prosthodontics
• Plastic surgery

Question 18

Consequences of CLP

Answer 18

• Underdeveloped + asymmetric face
• Retrognathic maxilla
• Nose deformity: wide and flat appearance
• Septum deviation
• Location and function of the facial muscles change
• Dental problems:
Occlusal abnormalities
Aplasia or abnormal teeth
Irregular eruption of central incisor is frequent

Question 19

Objectives of cleft treatment

Answer 19

Reconstruct anatomical structures surgically
Orthodontic upper arch correction
Functional habilitation
Nutrition, speech, hearing, facial muscles rehabilitation
Preventing consequential diseases
Psychological care