Objectives: Standardized measures to assess clinical aspects of the perform
ance of managed dental care plans are not available, This project sought to
develop and evaluate measures for effectiveness of care and use of service
s that could be calculated using a plan's administrative data. Methods: Two
panels of stake holders representing dental plans, purchasers, and dental
providers participated in a modified Delphi process to refine initial sets
of effectiveness of care and use of services measures modeled after HEDIS(R
) measures for medical care. The refined measures were then pilaf tested in
two dental health maintenance organizations. Results: The development proc
ess resulted in specification of seven effectiveness of care measures asses
sing disease activity classification, and prevention and outcomes for carie
s, periodontal disease, and tooth loss. Six use of services measures focusi
ng on prophylaxes, third molar surgery, preventive, restorative, prosthetic
, surgical, and endodontic care also were specified. Pilot testing of the m
easures indicated reasonable reliability and sensitivity, but also demonstr
ated the need for supervision or auditing of the process. Conclusions: Thes
e standardized measures for dental care plan performance are available for
immediate use. However, because the measures depend an diagnostic informati
on (periodontal probing data and diagnoses associated with restorative trea
tments) in the administrative data set, their adoption will require changes
in most plans' data systems and data collection policies.