CDH Exam 2: Epidemiological Methods (example scenarios)

This index wants to assess the oral cleanliness of a sample group

OHI or OHI-S

To find the total score, this index will divide the mouth into sextants and calculate each DI and CI. When adding these values, the score will range from 0-12. What is it

OHI

To find the total score, this index will divide the mouth into sextants and choose specific teeth to calculate each DI and CI. When adding these values, the scores will range from 0-6. What is it

OHI-S

This index wants to examine how well a pt removes plaque after brushing their teeth

PHP

This index wants to measure the formation supragingival calculus after a prophy exam on teeth 22-27

VMI

This index uses GI before its own calculation

Pl I

This index measures the thickness of plaque on ALL teeth at the gingival margin

Pl I

This index measures the severity of gingival inflammation, color, consistency, and BOP of the gingival margin by probing

GI

This index detects gingival inflammation and does not require probing

MGI

This index examines BOP after 30 seconds

SBI

This index uses unwaxed floss to estimate gingivitis

GBI

This index scored periodontal disease and gingivitis as a single score, not involving CAL

Russells PI

This index said all PDs deeper than 3mm were the same. EX: 4mm=10mm

Russells PI

This index is used in longitudinal studies and measures periodontal disease and gingivitis as a single score, it involves CAL

Periodontal disease index (PDI)

This was the first index to use Ramfjord teeth

PDI

This index is utilized to determine if pts need a comprehensive periodontal exam

PSR

This index identifies individual periodontal tx needs

PSR

This index measures periodontal treatment needs of groups/populations

CPITN

This index measures the periodontal status of a population

CPI

This index measures gingival health, BOP, calculus, PDs, and attachment loss of a population

CPI

This index looks at the past and present areas of coronal caries

DMF

This index measures root caries only

RCI

This index collects community oral health by a person-by-person basis

BSS

This type of research looks at info collected simultaneously (“snapshot”)

cross-sectional

This type of research looks at info collected twice and includes two groups

case control

This type of research is always retrospective

case control

This type of study mainly involves 1 group but can have a comparison group

cohort

This type of study is mostly longitudinal, but it can also be prospective/retrospective

cohort

This type of study identifies incidence rates

cohort