Table 1, Entities of dental status and their surrogates in oral health:
Left column notes the entities of dental status, which can be assessed from a full-arch radiograph. Their possible relation as a surrogate of oral health is shown in the right column. The involved subjects of Dental Medicine are noted in the middle column.
Reading the table from top to down, it has to be considered, that surrogates include content of cells above.
Table 2, Evaluated articles and encountered mode of report:
All full-text reviewed articles are sorted by the Year of publication. The date is followed by a discretionary index for the Impact Factor of the journal: o=none, *<1.5; **<3; ***>3. Please see caption c) Operationalization of findings in “Materials & Methods” section to decipher content in columns Ia-IV. Column IIb “Implants” is not shown for a comprehensive view and due to the lack of noteworthy reports.
Figure 1, Flow chart of review strategy and finally evaluated articles:
The flow chart shows the systematic exclusion of search results towards the finally evaluated studies. The primary reasons for exclusion are mentioned including the number of concerned articles.
Figure 2, Distribution of included and excluded articles:
Distribution of the 37 evaluated (green) and 159 excluded (red) studies of the search results ordered by their date of publication. Shaded fractions represent the 4 articles which were not available as full text version.
Figure 3, Shares of patients in the 37 evaluated studies with respect to the country of origin: The number of contributing studies is noted in brackets behind the country. Preponderance of USA is due to 2 two reports of “mass x-ray evaluation“ from in the Years the 60ies1977 and 70ies1982. If these two are left out of consideration the median value of studied subjects in a paper is 212 (mean=485).