Posterior palatal seal is recorded when the head is bent at:

  # Posterior palatal seal is recorded when the head is bent at:

A. 15 degree

B. 30 degree

C. 45 degree

D. 60 degree

The correct answer is B. 30 degree.

In conventional method of recording posterior palatal seal, the patient is seated in an upright position. In fluid wax technique, posterior palatal seal is recorded when the head is bent at 30 degree.

CLICK HERE FOR MORE MCQs

The type of patient demanding to be educated before the complete denture fabrication:

 # The type of patient demanding to be educated before the complete denture fabrication:

A. Philosophical

B. Exacting

C. Indifferent

D. Hysterical

The correct answer is B. Exacting.

Exacting patients are precise in everything they do. They are immaculate in dress and appearance. Their

nature is to be satisfied only by perfection. They may demand that the dentist explain every step of the

treatment in detail. These patients should not be promised that they will be able to wear a prosthesis

without any inconvenience, because they will expect the dentist to live up to such promises. Potential

problems and inconveniences should be explained in detail before treatment is initiated.

CLICK HERE FOR MORE MCQs

The primary function of posterior palatal seal is to:

 # The primary function of posterior palatal seal is to:

A. Retention of upper denture by making a complete seal

B. Aid in insertion and removal of the upper denture

C. Achieve balanced occlusion

D. Retention of lower denture

The correct answer is A. Retention of upper denture by making a complete seal.

The primary purpose of PPS is the retention of the maxillary denture. PPS creates a partial vacuum beneath the maxillary denture. This partial vacuum is activated only when horizontal or tipping forces are directed against the denture base. The duration of this vacuum is small and so little or no irreversible alterations to the underlying mucosa will take place.

CLICK HERE FOR MORE MCQs

Face bow is used to record:

 # Face bow is used to record:

A. Orientation relation

B. Centric relation

C. Eccentric relation

D. Vertical jaw relation

The correct answer is A. Orientation relation.

The maxillary cast is attached to the articulator using the orientation jaw relation records. The procedure of transferring the orientation relation to the articulator is called face-bow transfer.

Orientation jaw relation is defined as: “the jaw relation when the mandible is kept in its most posterior position, it can rotate in the sagittal plane around an imaginary transverse axis passing through or near the condyles”—GPT.

CLICK HERE FOR MORE MCQs