TTT of CD problems P1

Question 1

What is one of the primary challenges in constructing dentures over severely resorbed ridges?

Answer 1

The interference from adjacent musculature and the lack of resistance to lateral movement.

Question 2

Why is the extent of ridge atrophy greater in the mandible than the maxilla?

Answer 2

The mandibular ridge has a smaller denture-bearing surface, resulting in greater forces being applied to it.

Question 3

How does aging contribute to alveolar bone resorption?

Answer 3

Aging is often accompanied by osteoporotic changes in the skeleton, which can increase bone resorption.

Question 4

Why are females more prone to ridge atrophy during menopause?

Answer 4

The reduction in estrogen during menopause leads to bone demineralization and osteoporosis.

Question 5

How can poor general health contribute to alveolar bone resorption?

Answer 5

Diseases like uncontrolled diabetes, anemia, and hypertension disturb the metabolic process and lower tissue resistance to inflammation and bone resorption.

Question 6

How does a faulty impression cause bone resorption?

Answer 6

Excessive pressure on the mucosa during the impression process can lead to inflammation and bone resorption.

Question 7

What is the effect of excessive vertical dimension of occlusion on the ridges?

Answer 7

It can lead to excessive contact of denture teeth, increasing pressure on the ridges and promoting bone resorption.

Question 8

What role do parafunctional habits like bruxism play in ridge resorption?

Answer 8

Frequent, excessive forces applied through habits like bruxism can accelerate ridge resorption.

Question 9

What is the primary goal of prosthodontic treatment for patients with severely resorbed ridges?

Answer 9

To minimize forces transmitted to the supporting bone and reduce the movement of the prosthesis, decreasing ridge resorption.

Question 10

Why is maximum extension of the denture base important in patients with flat ridges?

Answer 10

It increases retention and distributes masticatory forces more widely.

Question 11

How does tissue conditioning material improve denture retention in cases of severe alveolar atrophy?

Answer 11

It stabilizes the tray, allowing accurate registration of border tissues, improving retention and functional accuracy.

Question 12

How can reducing the buccolingual width of the occlusal table help in treating flat ridges?

Answer 12

It centralizes occlusal forces on the ridge, reducing forces transmitted to the alveolar bone.

Question 13

What impression technique is preferred for flat ridges with firm mucosa?

Answer 13

Definite pressure impression (closed mouth technique) to maximize coverage of the denture-bearing area.

Question 14

How does the use of flat cuspless teeth benefit patients with resorbed ridges?

Answer 14

It centralizes occlusal forces and improves the stability of the denture.

Question 15

Why is vestibuloplasty performed as part of the surgical treatment for flat ridges?

Answer 15

To increase the depth of the vestibule and improve the denture-bearing area for better retention.

Question 16

What causes the development of a flabby ridge?

Answer 16

Ill-fitting dentures and uneven occlusal forces, causing hyperplastic tissue development and bone resorption.

Question 17

How does anterior hyperocclusion lead to the formation of a flabby ridge?

Answer 17

Excessive forces in the anterior region cause bone resorption, replacing the supporting bone with hyperplastic flabby tissue.

Question 18

What is the prosthodontic approach to treating a localized flabby ridge?

Answer 18

Tissue conditioning, using tissue rest and relining the denture with conditioning material to promote mucosal healing.

Question 19

What impression technique should be used for patients with flabby ridges?

Answer 19

A selective pressure impression technique, ensuring relief over hyperplastic tissue and proper load distribution.

Question 20

How should the posterior teeth be arranged in dentures for patients with flabby ridges?

Answer 20

Flat cuspless teeth, reduced buccolingual width of the occlusal table, and proper vertical alignment for better stability.

Question 21

What surgical treatment options are available for extensive flabby ridge cases?

Answer 21

Surgical reduction or alveolar ridge augmentation to improve denture stability.

Question 22

How can a maxillary complete denture opposing a full set of natural teeth lead to ridge resorption?

Answer 22

The excessive forces from the natural mandibular teeth cause resorption in the maxillary anterior region.

Question 23

What role does occlusal vertical dimension play in denture stability?

Answer 23

Adequate interocclusal distance during rest reduces the frequency of tooth contact, decreasing pressure on the alveolar ridge.

Question 24

Why is proper contouring of the denture’s polished surface important?

Answer 24

It enhances stability and retention by allowing muscles like the buccinator and tongue to aid in denture stability.

Question 25

How does lack of anterior clearance during mandibular movement affect denture stability?

Answer 25

It causes anterior interference, leading to trauma and instability in the anterior foundation tissues.

Question 26

What can be done to minimize movement in dentures for patients with severely compromised ridges?

Answer 26

Proper occlusal plane orientation, reducing the number of teeth, and using acrylic rather than porcelain teeth to reduce transmitted forces

Question 27

How does long-term denture wear without maintenance affect the ridges?

Answer 27

Long-term denture wear without follow-up or adjustments can lead to excessive forces on the ridges, promoting bone resorption and tissue damage.

Question 28

Why is the use of tissue conditioning materials critical before constructing dentures for patients with hyperplastic tissues?

Answer 28

Tissue conditioning materials help to restore the mucosa to a healthy state, reducing inflammation and improving the foundation for a stable denture.