Periapical status and technical quality in root canal filled teeth in a cross sectional study in Jönköping, Sweden

Figures & data

Table 1. Characteristics of contributing individuals (study sample) with at least one root filled tooth and frequencies of adequate root fillings and AP in relation to the Jönköping study participants

	The Jönköping study participants	Study sample
Variable	Individuals in age groups 20–70 years	Individuals	Root filled teeth (rf)	Frequency of Adequate rf	Frequency of AP
Total	N = 544 (100%)	N = 196 (100%)	N = 491 (100%)	N = 142 (28.9%)	N = 167 (34.0%)
Gender
Male	240 (44.1)	93 (47.4)	231 (47.2)	61 (26.3)	91 (39.2)
Female	304 (55.9)	103 (52.6)	260 (52.8)	81 (31.2)	76 (29.2)
Age
20	75 (13.8)	3 (1.5)	3 (0.6)	1 (33.3)	2 (66.7)
30	96 (17.6)	11 (5.6)	17 (3.5)	1 (5.9)	6 (35.3)
40	95 (17.5)	24 (12.2)	35 (7.1)	11 (31.4)	15 (42.9)
50	104 (19.1)	35 (17.9)	65 (13.2)	17 (26.2)	25 (38.5)
60	82 (15.1)	53 (27.0)	137 (27.8)	38 (27.7)	48 (35.0)
70	92 (16.9)	70 (35.7)	235 (47.8)	74 (31.5)	71 (30.2)

AP: apical periodontitis.

Data retrieved in 2013.

Table 2. Distribution of the root filled teeth with respect to quality of root filling and AP.

Variable	Teeth	Frequency of AP
Total	N = 491 (100%)
Adequate root fillings	141 (28.7%)	38 (27.0%)
Inadequate root fillings	350 (71.3%)	129 (36.9%)

AP: apical periodontitis.

Table 3. Distribution of the root filled teeth with respect to tooth group and frequency of adequate root canal filling and AP.

Variable	Teeth	Frequency of adequate rf	Frequency of AP
Total	491 (100%)
Incisors/Canines	133 (27.1%)	49 (36.8%)	39 (29.3%)
Premolars	156 (31.8%)	57 (36.5%)	35 (22.4%)
Molars	202 (41.1%)	35 (17.3%)	93 (46.0%)

AP: apical periodontitis; rf: root canal filling.

Table 4. Simple and multiple GEE-analysis of individual and tooth specific independent variables on frequency of AP in root filled teeth.

	Simple analysis		Multiple analysis
Variable	OR (95% CI)	p value	OR (95% CI)	p-value
Gender
Male	Reference		Reference
Female	0.66 (0.46–0.96)	.03	0.64 (0.44–0.94)	.022
Age
20	4.00 (0.35–45.42)	.26
30	1.09 (0.38–3.08)	.88
40	1.50 (0.75–2.98)	.25
50	1.46 (0.80–2.65)	.22
60	1.07 (0.66–1.73)	.80
70	Reference
Number of teeth (N)	1.01 (0.96–1.07)	.66
Number of root filled teeth (N)	1.01 (0.91–1.12)	.89
Tooth group
Incisors/canines	Reference		Reference
Premolars	0.70 (0.41–1.17)	.17	0.69 (0.41–1.17)	.17
Molars	2.11 (1.31–3.41)	.002	2.0 (1.22–3.29)	.01
Quality of root filling
Adequate	Reference		Reference
Inadequate	1.64 (1.06–2.56)	.028	1.32 (0.84–2.06)	.23

AP: apical periodontitis; GEE: generalized estimating equation.