. 2017 Jun 20;17:586. doi: 10.1186/s12889-017-4384-7

Table 2.

Intervention models by caries risk level

	Mean timings needed (in minutes)	Caries risk level
	Mean timings needed (in minutes)	1 - Low	2 - Relatively low	3 - Relatively high	4 - High
Maximum professional intervention model
Tooth restorations	21.7 per tooth	- ^e	- ^e	- ^e	Required^a
Regular check-ups	16.3 each time	Once a year^c	Twice a year^a,c	3 times a year^c	4 times a year^a,c
Fluoride varnish application	7.6 each time	Twice a year^b	Twice a year^a,b	3 times a year^b	4 times a year^a
Fissure sealants	6.9 per tooth	- ^b	Required^a,b	Required^a,b	Required^a,b
Minimum professional intervention model
Tooth restorations	21.7 per tooth	- ^e	- ^e	- ^e	Required^a
Regular check-ups	16.3 each time	Once a year^c,d	Once a year^b,c,d	Once a year^b,c,d	Twice a year^c
Fluoride varnish application	7.6 each time	Once a year^d	Once a year^d	Once a year^d	Twice a year^b
Fissure sealants	6.9 per tooth	- ^b	Required^a,b	Required^a,b	Required^a,b

^aAccording to AAPD recommendations published in 2013 and ADA recommendations published in 2014

^bAccording to PHE recommendations published in 2014

^cAccording to NICE recommendations published in 2004

^dThis is set as the bottom line of the measure

^eThis is due to they have no tooth decay for treatment