MDS PREP
According to Monson’s spheric theory of occlusion, each cusp and incisal edge conforms to a segment of the sphere, 8 inches in diameter, with its center at the
1. sella
2. lambda
3. glabella
4. bregma
Prosthodontics
Answer: 3
According to Monson’s spheric theory of occlusion, each cusp and incisal edge conforms to a segment of the sphere, 8 inches in diameter, with its center at the glabella.
Which of the following materials have maximum osseous integration
1) Tantalum and titanium
2) Vitreous carbon
3) Porous aluminium silicate
4) Alumina and sapphire
Prosthodontics
Answer: 1
Maximum osseous integration is a term used in the context of dental implants and refers to the degree to which the bone tissue of the jaw integrates with the implant material. Tantalum and titanium are both biocompatible materials that are known for their excellent osseointegration properties. Titanium is the most commonly used material for dental implants due to its high biocompatibility and strong osseointegration. Tantalum is also biocompatible, but it is not as commonly used as titanium.
First step in altering the abutment contour for clasp retention in RPD is
1) Placement of guiding planes after disking the proximal surfaces
2) Placement of occlusal rests after reducing the occlusal surface
3) Planning for placement of clasps after reducing the proximal surfaces
4) The abutment tooth is not contoured unless it is short
Prosthodontics
Answer: 1
Before altering the abutment contour for clasp retention, it is essential to establish the guiding planes. This is done by disking the proximal surfaces of the abutment teeth to create a flat, smooth surface that will guide the RPD during insertion and removal. Once the guiding planes are in place, the contour of the abutment can be altered to accommodate the placement of the retentive elements such as rests and minor connectors.
You would like to advise your patient to clean RPD
1) Early in the morning
2) Twice a day
3) After every meal
4) Thrice a day
Prosthodontics
Answer: 3
An RPD, or Removable Partial Denture, is a dental appliance that replaces one or more missing teeth. It is important to clean an RPD thoroughly after every meal to remove food debris and plaque, which can lead to dental issues like gum disease, decay of remaining teeth, and bad breath. Cleaning an RPD regularly helps maintain oral hygiene and the health of the patient's remaining teeth and gums. While it is generally recommended to clean it at least twice a day, cleaning after every meal is ideal to prevent the buildup of bacteria and food particles. The patient should also soak the RPD in a cleaning solution overnight to ensure thorough sanitization and maintenance of the appliance.
Recontouring and selective grinding procedures are carried out in complete denture to
1) Decrease the vertical dimension of occlusion
2) Decrease cuspal height
3) Enhance curve of Spee
4) Remove occlusal disharmony
Prosthodontics
Answer: 4
Recontouring and selective grinding are procedures used to adjust the fit and function of complete dentures. These adjustments are often performed to eliminate any interference with the patient's normal masticatory (chewing) function or to correct any imbalances in the bite. By removing excess material and reshaping the occlusal surfaces, the dentist can address issues such as malocclusion or improper contact between teeth, thereby restoring a harmonious occlusion.
Acrylic resin posterior teeth along with porcelain anterior teeth should not be
used in complete dentures because
1. it produces resorption of posterior residual ridge as acrylic teeth wear
2 they cause resorption of anterior residual ridge
3. the combination produces harmful stress concentrations
4 This combination can be used
Prosthodontics
Answer: 2
Explanation: The combination of acrylic resin posterior teeth
and porcelain anterior teeth can lead to differential wear and stress
concentrations, which may cause resorption of the anterior residual ridge.
Porcelain teeth are harder and can create more stress on the underlying bone
compared to acrylic teeth, leading to potential resorption. Therefore, option 2
is the correct answer, as it highlights the negative impact on the anterior
ridge.
Any tooth that supports a fixed or a re movable prosthesis, is termed
1. a bridge
2. an abutment
3. a retainer
4. a pontic
Prosthodontics
Answer: 2
An abutment is a tooth or implant that provides support for a fixed or removable prosthesis. It is crucial for the stability and retention of the prosthetic device.
Examination of patient revealed hyperplastic tuberosity touching the retromolar pad in mandibular rest position. You would like
1. Deepen the retromolar pad before construction of the CD
2. Reduce the tuberosity before constructing complete dentures
3. Both of the above
4. None of the above
Prosthodontics
Answer: 2
Examination of the patient revealed hyperplastic tuberosity touching the retromolar pad in the mandibular rest position. You would like to reduce the tuberosity before constructing complete dentures.