Crown Height Space (CHS) for implant dentistry is measured from:

# Crown Height Space (CHS) for implant dentistry is measured from:
a) prosthetic platform
b) crest of the bone
c) junctional epithelium
d) gingival margin





The correct answer is B. Crest of the bone.

Crown Height Space(CHS) is measured from crest of bone to the plane of occlusion in posterior region and incisal edge of arch in anterior region.

Gingivitis in leukemic patient resembles:

 # Gingivitis in leukemic patient resembles:
A. Pyogenic granuloma
B. Herpetic gingivostomatitis
C. Hairy cell Leukoplakia
D. ANUG




The correct answer is D. ANUG.

Acute gingivitis and lesions that resemble necrotizing ulcerative gingivitis are more frequent and severe in patients with terminal cases of acute leukemia. The inflamed gingiva in patients with leukemia differs clinically from that found in nonleukemic individuals. The gingiva is a peculiar bluish red, it is spongelike and friable, and it bleeds persistently on the slightest provocation or even spontaneously in leukemic patients. This greatly altered and degenerated tissue is extremely susceptible to bacterial infection, which can be so severe as to cause acute gingival necrosis with pseudomembrane formation or bone exposure.

Reference: Carranza's Clinical Periodontology, 12th Edition, Page no: 194

PUFA index in Dentistry

PUFA (pulp, ulceration, fistula, abscess) provides a measure of badly diseased and broken down teeth which have been attacked by dental decay and are causing significant problems in need of early attention. It is now advocated for use by the FDI as a tool that can help to stress the importance of tackling dental caries to planners (Benzian et  al., 2011b).  It is  interesting  to  note  that in  the  UK,  where there have been massive improvements in oral health, some 7% of dentate adults (adults with teeth) had one or more conditions. A PUFA score of one or more was more common in men than women, adults from lower social groups than more affluent, amongst adults who reported brushing less than once a day than amongst those who brushed once or twice, and amongst smokers rather than non‐smokers.


PUFA index criteria

P  –  pulp involvement is recorded when the opening of the pulp chamber is visible or when the coronal tooth structures have been destroyed by the carious process and only roots/root fragments are left

 U  –  ulceration due to trauma is recorded when sharp edges of a dislocated tooth with pulp involvement or root fragments have caused traumatic ulceration of the surrounding soft tissues, e.g. tongue or buccal mucosa 

F  –  fistula is scored when a pus‐releasing sinus tract related to a tooth with pulp involvement is present

 A  –  abscess is scored when a pus‐containing swelling related to a tooth with pulp involvement is present .

Source:  Monse  et  al., 2011;  Health  and Social  Care  Information Centre, 2011c.

The principal component of dental plaque is:

 # The principal component of dental plaque is:
A. Dextrans
B. Lactic acid
C. Materia alba
D. Microorganism



The correct answer is D. Microorganism.

Dental plaque is composed primarily of microorganisms. One gram of plaque (wet weight) contains approximately 100000000000 bacteria. The number of bacteria in supragingival plaque on a single tooth surface can exceed 1000000000 cells. In a periodontal pocket, counts can range from 1000 bacteria in a healthy crevice to more than 100000000 bacteria in a deep pocket. With the use of highly sensitive molecular techniques for microbial identification, it has been estimated that more than 500 distinct microbial phylotypes can be present as natural inhabitants of dental plaque.

Reference: Carranza's Clinical Periodontology, 12th Edition, Page no:  141


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