Dental caries experience, care index and restorative index in children with learning disabilities and children without learning disabilities; a systematic review and meta-analysis

Table 7 dmft, Care index (CI) and Restorative index (RI) in CLD and CNLD (n = 25 studies; 9 studies with dmft and standard deviations reported). Down syndrome subgroup. Studies where dmft data couldn’t be used are shown in learning disability subgroup tables, with reasons why, but are not included in calculations. All data were calculated from the primary data reported in Additional file 1: Appendix 2

Down syndrome (primary teeth; n = 11 studies)
Study	Number of participants		Ages	dmft/deft data
Study	CLD	CNLD	Ages	CLD dmft / deft (sd)	CNLD dmft / deft (sd)	CLD CI	CNLD CI	CLD RI	CNLD RI	Reason no DMFT data included
Al Habashneh 2012 [15]	103	103	12–16							No dmft/deft data
AlSarheed 2015 [17]	93	99	7–15							No dmft/deft data
Areias 2013 [18]	45	45	6–18							No dmft/deft data
Cogulu 2006 [65]	73	70	7–12							No dmft/deft data
Cornejo 1996 [29, 49]	86	86	7–9	2.40 (0.60)	1.70 (0.30)
Davidovich 2010 [21]	70	32	1–9							No dmft/deft data
Hashizume 2017 [25]	61	52	6–14	1.84 (3.67)	0.98 (1.39)
Lee 2004 [61]	19	41	8–17							No dmft/deft data
Mathias 2011 [27]	69	69	1–7							No dmft/deft data
Stabholz 1991 [63]	32	30	8–13							No dmft/deft data
Subramaniam 2014 [29]	34	34	7–12	2.69 (1.62)	2.90 (1.60)
Subgroup Total	685	661
Mean (sd)	62.27 (±26.97)	60.09 (±26.90)		2.31 (±0.43)	1.86 (±0.97)

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