TABLE 9.

Occurrence of single crown loss of retention, according to the type of crown material and type of cement

	Types of cement
	Zinc phosphate cement	Resin cement	Glass ionomer cement	Resin modified glass‐ionomer cement	Total
Material	n/N (%)	n/N (%)	n/N (%)	n/N (%)	n/N (%)
All‐ceramic	6/55 (10.9)	7/110 (6.4)	1/4 (25.0)	0/0 (0)	14/169 (8.3)
Gold ceramic	68/657 (10.4)	1/4 (25.0)	1/8 (12.5)	1/4 (25.0)	71/673 (10.5)
Gold	6/66 (9.1)	0/1 (0)	0/1 (0)	0/0 (0)	6/68 (8.8)
CoCr ceramic	11/116 (9.5)	0/6 (0)	0/0 (0)	0/0 (0)	11/122 (9.0)
Total	91/894 (10.2)	8/121 (6.6)	2/13 (15.4)	1/4 (25.0)	102/1032 (9.9)