MDS PREP
For a complete denture patient with Class III ridge relation, the freeway space
1. must be increased
2 .must be decreased
3.should be the same as for Class I
4. Do not set teeth for abnormal jaw relations
Prosthodontics
Answer: 2
Explanation: In Class III ridge relations, the freeway space
must be decreased to accommodate the altered jaw relationship and ensure proper
occlusion. This adjustment helps maintain functional stability and comfort for
the patient.
Porosity occuring in the bulky portions of the heat-cured acrylic complete dentures is due to
1) Insufficient pressure application during packing
2) Time lag between packing and curing
3) Directly placing the packed resin in water at 100 degree
4) Using a fluid pour technique
Prosthodontics
Answer: 3
Porosity in heat-cured acrylic dentures can occur due to several factors, but the most significant cause in this context is the direct placement of the packed resin in water at high temperatures (100 degrees Celsius). When the packed resin is subjected to such conditions, it can lead to rapid polymerization and the formation of bubbles or voids within the material, resulting in porosity. This is because the heat causes the monomer to vaporize, and if the vapor cannot escape, it leads to trapped air pockets.
What is the function of the analyzing rod in a dental surveyor?
1) To clean the cast
2) To contour wax patterns
3) To measure the depth of cavities
4) To analyze the cast for undercuts
Prosthodontics
Answer: 4
The analyzing rod is a straight metal shaft used
to evaluate the presence or absence of undercuts on the cast.
The Camper’s plane passes from the
1. lateral commissure of the mouth to the inferior edge of the ear
2. orbitale to the middle of the tragus of the ear
3. ala of nose to the superior edge of the tragus of the ear
4. outer canthus of eye to the most posterior point on the tragus of the ear
Prosthodontics
Answer: 3
The Camper’s plane is a facial reference plane that passes from the ala of the nose to the superior edge of the tragus of the ear. This plane is used in facial and cranial anatomy to describe the orientation of various structures and is often referenced in the field of orthodontics and surgery. It is useful for assessing the facial profile and the relationship between the nose, ears, and other facial features.
From the diagnostic casts, all of the following information can be gained except?
1. Gingival tissue contour and pocket depths
2. Axial inclination of the tooth
3. Arch form and contour
4. Occlusal interference
Prosthodontics
Answer: 1
From the diagnostic casts, all of the following information can be gained except gingival tissue contour and pocket depths.
In a denture wearing patient, there is
1. No bone resorption
2. Bone formation
3. Independent of denture, there is bone resorption
4. Initial bone resorption followed by bone formation
Prosthodontics
Answer: 3
In a denture wearing patient, there is independent of the denture, there is bone resorption.
If palatel seal is placed too deep, it may result in
1. Improper phonetics
2. Gagging sensation
3. Improper seating of the denture
4. Retention increases with depth
Prosthodontics
Answer: 3
If the palatal seal is placed too deep, it may result in improper phonetics.
The aesthetics of the artificial denture begins with
1. Examination and diagnosis
2. Impressions
3. Wax records
4. Trial in stage
Prosthodontics
Answer: 1
The aesthetics of the artificial denture begins with examination and diagnosis.