A Retrospective Clinical Study on Factors Influencing the Failure of NCCL Restorations

Table 2

Distribution of the restorations, restoration loss, partial retention loss, and caries failure related to various factors presented as percentages.

Factor		Teeth	Restoration loss (C)	value	Partial retention loss (B + C)				Caries	value
					Occlusal	value	Gingival	value
Gender	Male	36.1	3.6	0.567	9.6	0.435	13.9	0.014	0.6	0.376
	Female	63.9	3.4		5.8		6.1		1.0
Age	15–59 years	50.0	3.5	0.222	7.0	0.970	7.8	0.629	0.9	0.746
	≥60 years	50.0	3.5		7.4		10.0		0.9
Arch	Upper	53.0	2.0	0.986	5.3	0.915	7.0	0.132	0.8	0.926
	Lower	47.0	5.1		9.3		11.1		0.9
Position	Q1	28.0	2.3	0.758	7.0	0.586	6.2	0.577	1.6	0.981
	Q2	25.7	1.7	0.651	3.4	0.302	8.5	0.435	0	0.995
	Q3	23.5	5.6	0.774	7.4	0.230	7.4	0.065	0	0.996
	Q4	22.8	4.8	Ref.	11.4	Ref.	14.3	Ref.	1.9	Ref.
Tooth type	Anterior	28.1	6.2	0.599	8.5	0.202	10.9	0.227	1.6	0.996
	Premolar	54.1	2.0	0.547	5.6	0.127	7.2	0.136	0.8	0.996
	Molar	17.8	3.7	Ref.	9.8	Ref.	11.0	Ref.	0	Ref.
Occlusal wear facets	Yes	61.5	4.9	0.041	8.8	0.128	12.4	0.004	1.1	0.525
	No	38.5	1.1		4.5		3.4		0.6
Caries risk	High	7.0	6.3	0.684	15.6	0.389	12.5	0.963	0	0.998
	Moderate	75.6	3.2	0.276	6.9	0.555	9.5	0.330	0.9	0.185
	Low	17.4	3.8	Ref.	5.0	Ref.	5.0	Ref.	1.3	Ref.
Operator	Undergraduate	81.1	4.0	0.498	8.3	0.117	9.9	0.122	0.8	0.597
	Postgraduate	18.9	1.1		2.3		4.6		1.1
Adhesive strategy	2-step E&R	40.2	5.9	0.043	11.4	0.013	12.4	0.163	1.1	0.895
	2-step SE	20.2	4.3	0.050	8.6	0.059	7.5	0.705	0	0.996
	Selective etching	39.6	0.5	Ref.	2.2	Ref.	6.0	Ref.	1.1	Ref.
Composite	Filtek Z350	70.4	2.8	0.999	6.2	0.914	9.0	0.998	0.3	0.999
	Estelite sigma quick	26.1	5.8	0.998	10.0	0.620	10.0	0.998	2.5	0.998
	Filtek Z250	3.5	0	Ref.	6.3	Ref.	0	Ref.	0	Ref.
Overall	Total (number)	100	3.5		7.2		8.9		0.9

Association between the factor of restoration and the parameter failures, retention, and caries ( value <0.05, binary logistic regression analysis).