ROOT PLANING is an example of:
CONCEPT: while solving questions based on level of prevention, go to the basic definition of these level of preventions. 

PRIMORDIAL – prevent the emergence of risk factor.
Aims at prevention of CHRONIC DISEASES. 
PRIMARY – caries activity test, oral prophylaxis, space maintainers.

Examples of specific protection – immunisation, use of specific nutrients (e.g. VIT. A ), chemoprophylaxis, protection from specific carcinogen/accidents. Primary prevention includes the concept of positive health. 

IODINE CONTROLL PROGRAM: • Can be estimated by NEONATAL HYPOTHYROIDISM (Neonatal thyroxin level) 
SECONDARY – Screening of oral diseases so, biopsy , oral cytology are under secondary prevention. PRR PULP CAPPING

Scaling and root planning. Largely the domain of clinical medicine. It is more expensive and less effective. The health programme initiated by government is usually at the level of secondary prevention.

TERTIARY: {IMPAIRMENT – ANY loss/ abnormality of psychological/ anatomical/functional /physiological is impairment.} Disability limitation and rehabilitation. e.g. PULPOTOMY, RCT, EXTRACTION, ,Deep curettage , root planning, RPD, FPD.
Primary Prevention
Secondary Prevention
Tertiary prevention
All of the above