RPD Review Questions
Correct. If there is the need to provide indirect retention from the anterior teeth but large interproximal spaces exist, the metal from the lingual plate could be visible and unsightly. In this case, a double lingual bar might be indicated. However, it is NOT a commonly used major connector.
Incorrect. The inferior bar of the double lingual bar major connector must meet all the requirements for a conventional lingual bar. Consequently, the double lingual bar cannot be used when there is a high floor of the mouth.
Incorrect. Overlapping anterior teeth pose the same problems for the upper bar of the double lingual bar connector as they pose for linguoplating. In either case, the teeth would need to be recontoured to eliminate spaces between the teeth and the connector.
Incorrect. Since #2 is incorrect, #4 is incorrect.