ART is an approach developed by WHO.
The High-strength glass-ionomer cement developed by a Japanese Corporation GC as FUJI-IX is widely used.

"http://sea.gcasiadental.com/EN/Products/30/Glass-Ionomer/GC-Fuji-IX-ART" GC Fuji-IX (not SSL site)

"http://sea.gcasiadental.com/Upload/product/pdf/14/IFU-GC-Fuji-IX-ART.pdf" GC Fuji-IX PDF (not SSL site)

The initial shallow dental caries are scraped with a hand cutting tool and filled with glass ionomer cement.
Link to WHO
It is widely used in rural areas of southwest Asia.
Link to WHO 2009
Because ART does not reqire advanced equipment and does not use anesthesia, it is less expensive and easy to implement.
On the other hand, it can only be applied to the early caries.
Link to Clin Oral Investig.
At the end of this paper Frencken JE. concluded,
--While oral health promotion through prevention remains the essential foundation of oral health,
the ART approach is an important corner stone in the building of global oral health.--

In developed countries, dental treatment with ART is rare.
In particular, although glass ionomer cements are sometime used, treatments without high speed cutting tools are rare.
For this reason, the actual data using a hand cutting tool is not yet here.

Also this JICA project will not apply beyond Oral health campaing.
(ART is a tiny but treatment.)