Qs

Question 1

complications of tooth-supported FPD

Answer 1

1. caries (18% abutments; 8% prostheses)
2. need for endodontic treatment (11% abutments; 7% prostheses)
3. loss of retention (7%)
4. esthetics (6%)
5. periodontal disease (4%) – difficult in maintainance
6. tooth fracture (3%)
7. prosthesis fracture (2%)
8. porcelain veneer fracture (2%)

Question 2

technical complications of implant supported

Answer 2

1. porcelain occlusal fracture (most common)
2. screw loosening (second most common)
3. loss of retention
4. cement failure
5. screw fractures

Implant FPDs
1. Fractured implants
2. Lose screws
3. Fracture of the abutment/ prosthetic screws
4. Veneer fracture
5. Loss of occlusal restoration

Question 3

red complex bacteria

Answer 3

1. P. gingivalis,
2. t. forsythia,
3. t. denticola

Question 4

surgical guide uses

Answer 4

• help to translate the information from the radiographic evaluation into the clinical procedure.
• These surgical guides may be a prerequisite when multiple teeth are missing and a fixed reconstruction with implant‐supported crowns and bridges is planned.

Directs or indicates

1. desired implant position and angulation
2. probable abutment dimension and angulation
3. need for hard/soft tissue augmentation before or during implant placement

Question 5

which factors influence changes in alveolar bone proper after extraction?

Answer 5

• Tooth-related diseases , (ex: periodontitis or periapical periodontitis)
• Traumatic injuries (ex: during extraction or after an accident – falling down the stairs)

Question 6

soft tissue healing stages

Answer 6

1. cell proliferation within the mucosa resulting in an increase of its connective tissue volume.
2. the soft tissue wound becomes epithelialized and a keratinized mucosa will cover the extraction site.
3. The contour of the mucosa subsequently adapts to follow the changes that occur in the external profile of the hard tissue of the alveolar process.
4. the contraction of the ridge is the net result of bone loss as well as loss of connective tissue.

Question 7

describe type 2 implant placement, when, adv, disadv

Advantages:

Answer 7

1. Reduced treatment time
2. Additional soft tissue volume allows for easier attainment of tension-free closure
3. Additional soft tissue volume may enhance soft tissue esthetic outcomes
4. Flattening of facial bone contours facilitates grafting of the facial surface of the bone
5. Peri-implant defects often present as two- or three-walled defects, which are favorable for simultaneous bone augmentation procedures
6. Allows for resolution of pathology associated with the extracted tooth

Question 8

describe type 2 implant placement, when, adv, disadv

disadvantages:

Answer 8

1. Two surgical procedures are required
2. Morphology of the site may compromise initial implant stability

Question 9

how can you diagnose peri-implantitis if you do not have previous examination data?

Answer 9

1. bleeding and/or suppuration on gentle probing
2. probing depths of ≥ 6 mm (subgingivally)
3. bone levels ≥ 3 mm apical of the most coronal portion of the intra-osseous part of the implant

Question 10

options to replace a missing tooth (at least 4)

Answer 10

1. Conventional fixed partial dentures comprising cantilever units
2. Adhesive, RBB (cantilever)
3. Conventional RPDs
4. Tooth-supported overdentures
5. Orthodontic therapy (closure of edentulous spaces)
6. Implant-supported prostheses (fixed, retrievable or removable suprastructures)
7. Combinations of the above