Dentofacial deformities

Question 1

_______ is essentially corrective Jaw surgery and is used
to correct both jaw and face deformities.

Answer 1

Orthognathic surgery

Question 2

Common indications for ____
– Dentofacial deformities

– Growth disturbances

– Malocclusion from skeletal disharmonies

– Orthodontic problems not amenable to orthodontic treatment alone
(Transverse Maxillary deficiency)

– Obstructive sleep apnea

Answer 2

Orthognathic surg

Question 3

Apertognathia is called _______

Answer 3

Anterior open bite

Question 4

Orthodontics alone can’t fix transverse maxillary deficiencies of more than ___ mm

Answer 4

5 mm

Question 5

What is the order of events for fixing dentofacial deformities?

Answer 5

Presurg Ortho
Surg
Post surg ortho

Question 6

one of the most common Maxillary
orthognathic surgical procedures.

Maxilla Can be segmentallized in
to 2,3 or 4 pieces
- To advance Maxilla (Maxillary Retrognathia)
- To set back Maxilla (Maxillary Prognathia
- To correct Maxillary occusal Canting or tilt (Facial Aymmetry)
- To Superioroly reposition Maxilla (Vertical Maxillary Excess)
- To Inferioroly reposition Maxilla (Vertical Maxillary Deficiency)

Answer 6

Le forte 1 osteotomoy

Question 7

most commonly performed mandibular osteotomy is the sagittal
split osteotomy due primarily to its simplicity and versatility
INdicationS:
– Mandibular advancement

– Mandibular set-back

– Mandibular rotation
 IAN Injury

 20-85%- transient

 Undesirable split

 Condyle repositioning- can lead to condyle resorption

Answer 7

Bilateral Sagittal Split Osteotomy

Question 8

Procedure used to alter the size and morphology of the bony chin
with concomitant changes in the surrounding soft tissues.

 Advancement genioplasty
 Reduction genioplasty
 Alloplastic augmentation (Chin Implant)

procedure can be used without orthodontics

Answer 8

Genioplasty

Question 9

A sliding osteotomy of the chin is used in cases of micro- or macrogenia

Answer 9

Genioplasty