Mandibular major components

Question 1

Types of Mandibular Major Connectors:

Answer 1

1. Lingual bar
2. Lingual plate
3. Double lingual bar /Kennedy bar
4. Labial bar

Question 2

Rigidity

Answer 2

Should be rigid and provide cross-arch stability.

Question 3

Gingival margins:

Answer 3

Where possible allow a minimum of 3-4mm distance between the major connector and free gingival margins

Question 4

Mandibular major connectors:

Answer 4

Question 5

Lingual bar:

Answer 5

1. Usually the first choice
2. Requires minimum of 7-8mm height between lingual sulcus (when floor of the mouth is raised) and gingival margins
3. 3-4mm clearance to gingival margins for hygiene + 4mm bar height

Question 6

Lingual bar:

Answer 6

Question 7

What are the advantages of the lingual bar major connector?

Answer 7

Question 8

What are the disadvantages of the lingual bar major connector?

Answer 8

Question 9

Lingual plate:

Answer 9

Question 10

What are the advantages of the lingual plate major connector?

Answer 10

Question 11

What are the disadvantages of the lingual plate major connector?

Answer 11

Question 12

Sublingual bar:

Answer 12

Question 13

What are the advantages of the sublingual bar major connector?

Answer 13

1. More hygienic
2. Aesthetic

Question 14

What are the disadvantages of the sublingual bar major connector?

Answer 14

Question 15

Continuous bar +/- lingual bar:

Answer 15