Theory II

imperfect formation of enamel hereditary condition in which the ameloblasts fail to lay down the enamel matrix properly or at all

green plant pigment essential to photosynthesis

producing color or pigment

arranged in order of time

hereditary disorder of dentin formation in which the odontoblasts lay down an abnormal matrix, can occur in both primary and permanent dentitions

produced within or caused by factors within

originating outside or caused by factors outside

derived from or situated on the outside; external

incomplete development or underdevelopment of an organ or a tissue

situated entirely within

agreement with a set standard of performance; determination of accuracy and consistency between examiners to standaridze procedures and gain reliability of recorded fingings. Examiners who collect dental index data for epidemiological research or community health assessment are trained to measure the index in exactly the same way each time

a multifaceted process of identifying factors that affect the oral health status of a selected population

pieces of information collected using measurements and/or counts

the process of tgathering information (through the use of tools such as dental indices)

the study of the relationships of various factors that determine the frequency and distribution of diseases in the human commmunit; study of health and disease in populations

the rate at which a certain event occurs, as the number of new cases of a specific disease occuring during a certain period of time

a graduated, numberic scale with upper and lower limits; scores on the scale correspond to a specific criterion for individuals or populations

describs oral status by expressing clinical observations as numeric values

a factor that typically characterizes a disease or health condition; a factor measured and analyzed to describe health status. dental indices described in this chapter measure oral health indicators

a trial run of aplanned study using a small sample to prestest an instrument, survey or questionnaire

an inactive substance or preparation with no intrinsic therapeutic value given to satisfy a pts symolic need for drug therapy; used in controlled research studies in a form identical in appearance to the naterial being tested

the total number of cases of a specific disease or condition in existence in a given population at a certain time

theeth used for epidemiologic studies of periodontal diseases the maxillary right and mandibular left first molars, maxillary left and mandibular right first premoalrs and maxillary left and mandibular right central incisors

ability of an index or test procedure to measure consistently at different times and under a variety of conditions; reproducibility; consistency

a portion or subset of an entire population

assessment of many individuals to disclose certain cahracteristics or diseases in a population

brief assessment for initial evaluation and classificaiton of need for additional examination and treatment planning

refers to the state or condition of an individual or population

the ongoing systematic collection, analysis, and interpreation of outcome-specific data for use in planning, implementing and evaluating the effect of public health programs and practices

ability of an index or test procedure to measure what is intended to measure