MDS PREP
Least involved furcation is
1. Mandibular first molar
2. Maxillary first molar
3. Maxillary first premolar
4. Mandibular second molar
Periodontics
Answer: 3
The least involved furcation is seen in the maxillary first premolar.
A teenaged patient reported complaining of sudden drifting of teeth. Bone loss and pockets were found to be more severe on some teeth when compared to neighboring teeth. The most likely diagnosis is
1. simple periodontitis
2. chronic nonspecific periodontitisv
3. juvenile periodontitis
4. gingivosis
Periodontics
Answer: 3
Juvenile periodontitis (now referred to as localized aggressive periodontitis)
is characterized by localized bone loss and periodontal pockets, often affecting
adolescents and young adults. The sudden drifting of teeth and the severity of
bone loss in specific areas align with this diagnosis.
Guided tissue regeneration (GTR) is used mainly in the treatment of
1. Class I furcations
2. Class II furcations
3. Class III furcations
4. All of the above
Periodontics
Answer: 2
Guided tissue regeneration (GTR) is used mainly in the treatment of Class II furcations.
Which of the following is a problem relating to the improper use of a laterally positioned flap employed to cover a dehiscence?
1. Extreme patient discomfort
2. Presence of undetected occlusal trauma
3. Creation of a new dehiscence at the donor site
4. Severe infection
Periodontics
Answer: 3
If a laterally positioned flap is not properly designed or secured, it can lead
to complications such as tearing or failing to fully cover the dehiscence,
potentially causing a new dehiscence at the donor site.
The following tooth has poorest prognosis after furcation therapy due to limited instrument accessibility
1. Maxillary first molar
2. Maxillary Second molar
3. Mandibular first molar
4. Maxillary first premolar
Periodontics
Answer: 4
The tooth with the poorest prognosis after furcation therapy due to limited instrument accessibility is the maxillary first premolar.
Vestibular extension procedure results in
1. Increase in width of keratinised attached gingiva
2. Decrease in width of keratinised attached gingiva
3. Increase in width of non-keratinised attached gingiva
4. Decrease in width of non-keratinised attached gingiva
Periodontics
Answer: 3
Vestibular extension procedure results in an increase in width of non-keratinised
attached gingiva
The vestibular extension procedure is a surgical treatment that involves the
apical movement of the vestibular mucosal tissue to increase the width of
attached gingival tissue around a tooth. This procedure typically does not alter
the width of the keratinized attached gingiva, which is the tissue that is
directly connected to the tooth surface. Instead, it primarily increases the
non-keratinized attached gingival width, which is the part of the gingival
tissue that is not directly attached to the tooth but is still important for
periodontal health and aesthetics.
A Gracey curette is said to be correctly adapted when the
1. Handle is parallel to the long axis of the tooth
2. Angle of blade to the tooth is 40
3. Lower shank is parallel with the tooth surface being sealed
4. None of the above
Periodontics
Answer: 3
A Gracey curette is correctly adapted when the lower shank is parallel with the tooth surface being scaled.
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.