MDS PREP
Enzymes associated with connective tissue degradation in the periodontal are
1. hyaluronidase and chondroitinase
2. lipase and glycosyltransferase
3. renin and cytochrome oxidase
4. microsomal enzymes
Periodontics
Answer: 1
Hyaluronidase and chondroitinase are enzymes that play a role in the degradation of connective tissue components, including glycosaminoglycans in the periodontal tissues. These enzymes contribute to the breakdown of the extracellular matrix, which is significant in periodontal disease progression.
During activation of a scaling instrument, the facial surface of the blade and tooth surface should form an angle of
1. > 15 but < 45
2. > 30 but < 60
3. > 45 but < 90
4. > 90 but < 180
Periodontics
Answer: 3
During activation of a scaling instrument, the facial surface of the blade and tooth surface should form an angle of > 45 but < 90 degrees.
Failures in maintaining adequate plaque control result mostly from failures in patient
1. neuromuscular skills
2. motivation
3. records
4. recalls
Periodontics
Answer: 2
The primary reason for failures in maintaining adequate plaque control is often
a lack of motivation. Patients may understand the importance of oral hygiene but
may not be motivated to implement effective brushing and flossing techniques
consistently.
Stippling is seen on
1) Marginal gingiva
2) Attached gingiva
3) Interdental gingiva
4) None of the above
Periodontics
Answer: 2
Stippling is typically observed on the attached gingiva, indicating healthy
tissue.
The most prominent immunoglobulin in sulcular fluid is
l . Ig A
2. Ig E
3. Ig M
4. Ig G
Periodontics
Answer: 4
The most prominent immunoglobulin in sulcular fluid is IgG.
Sulcular fluid is the fluid found in the space between the tooth and the
surrounding gingival tissue. It contains various immunoglobulins that contribute
to the local immune defense against oral pathogens. While IgA is the most common
immunoglobulin found in saliva, which is closely related to the oral cavity, the
most prominent immunoglobulin in sulcular fluid is actually IgG. IgG is the most
abundant antibody in the blood and can be found in various bodily fluids,
including sulcular fluid, where it provides protection against infections and
inflammation. IgE is associated with allergic reactions, IgM with early immune
responses, and IgA with mucosal surfaces
The treatment of choice for generalized fibrous gingival hyperplasia is
1. lateral pedicle flap
2. full thickness flap surgery
3. gingivectomy
4. root planning and curettage
Periodontics
Answer: 3
Fibrous gingival hyperplasia, also known as gingival overgrowth, is
characterized by an increase in the size of the gingival tissue due to an
excessive accumulation of collagen and other extracellular matrix components.
This condition can be caused by various factors, including certain medications
(like anticonvulsants, calcium channel blockers, and immunosuppressants),
hormonal changes, or chronic inflammation.
Which of the following is the main constituent of plaque?
1. Calcium and phosphorus
2. Water
3. Microorganisms
4. Glycoproteins and monosaccharides
Periodontics
Answer: 3
Dental plaque is primarily made up of microbial communities, which play a
significant role in the development of dental diseases like caries and
periodontal disease.
Which of the following radiographic changes are associated with gingivitis?
1. Increased width of the periodontal ligament space
2. Widening of medullary spaces and loss of trabeculation
3. Irregularity of the crestal lamina dura
4. None of the above
Periodontics
Answer: 4
Typically, gingivitis does not present distinct radiographic changes as seen in
periodontitis, where bone loss is evident. Gingivitis is characterized mainly by
inflammation of the soft tissues.