Clinical Performance of Viscous Glass Ionomer Cement in Posterior Cavities over Two Years

Table 3

Cavity size related to survival of restorations after one year.

Measured margin length	Intact restorations		Fractured restorations		Level of significance
	N	mean [mm]	𝑛	mean [mm]	(Mann-Whitney U-Test)
(1) Width at the isthmus
(a) mesially	19	4.16	6	4.18	1.00
(b) distally	10	4.18	5	3.62	0.13
(2) Maximum width of proximal box
(a) mesially	19	5.25	6	5.43	0.73
(b) distally	10	5.66	5	5.22	0.59
(3) Vestibular height at isthmus
(a) mesially	14	2.83	6	3.73	0.13
(b) distally	8	3.39	4	4.30	0.11
(4) Height at isthmus
(a) mesially	14	2.84	6	3.74	0.44
(b) distally	8	3.43	4	4.75	0.21
(5) Maximum cavity width Transversally	35	5.61	9	5.13	0.53
(6) Maximum cavity width mesio-distally	3	7.58	9	7.04	0.80