Virtual perio-clinic

Clinical scenario-based questions

CASE 5

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(virtual clinic)

Hand scaler adaptation

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Dental biofilm is the community of microorganisms found on a tooth surface embedded in a matrix of polymers of host and bacterial origin

Microorganisms in dental biofilms are less susceptible to antimicrobial agents

Dental biofilm forms via an ordered sequence of events, resulting in a structurally- and functionally organized, species-rich microbial community

Dental biofilm is categorised as a soft tooth deposit

All above is correct

Reversible attachment, acquired pellicle formation, irreversible attachment, co-adhesion, multiplication

Primary pellicle formation, reversible attachment, detachment, co-aggregation and maturation

Acquired pellicle formation, reversible attachment, irreversible attachment, co-adhesion, multiplication

Co-aggregation, maturation, irreversible attachment, extracellular matrix production

None of above

Dental calculus is composed of inorganic components and organic matrix

Brushite, dicalcium phosphate dihydrate, octacalcium phosphate hydroxyapatite, and whitlockite form the mineral part of dental calculus

Supersaturation of saliva and plaque fluid with respect to calcium phosphates is the driving force for plaque mineralization

Acidic phospholipids and specific proteolipids present in bacterial cell membranes do not affect microbial mineralization

Anterior sickle scaler, posterior sickle scaler, universal curette, ultrasonic scaler

Anterior sickle scaler, polishing cup and paste, soft laser, ultrasonic scaler

Posterior sickle scaler, Gracey’s curette, universal curette, piezoelectric and magnetostrictive scalers

Anterior sickle scaler, air-flow, soft laser, ultrasonic scaler

Sickle scaler has a pointy tip, while curette has rounded toe

Sickle scaler can be used only supragingival while curettes may be used subgingival

Sickle scaler has semi-circular cross-section, curette has triangular cross-section

1 and 2 are correct

Finish