Quantification of wear-time adherence of removable appliances in young orthodontic patients in relation to their BMI: a preliminary study

Figures & data

Table 1 Demographics and wear times of overweight (defined by BMI percentile 90–96) children and adolescents undergoing orthodontic therapy

Patient number	Sex	Age in years	BMI percentile	SDSLMS	Treatment appliance type	Daily wear time in hours
Overweight
1	M	10.6	90.3	1.30	A	9.4
2	M	11.9	90.3	1.30	B	11.1
3	M	8.3	91	1.37	A	11.1
4	F	10.9	92	1.39	B	2.1
5	M	12.1	91.9	1.40	B	9.0
6	M	15.7	91.9	1.40	A	10.6
7	M	9.1	91.9	1.40	A	8.8
8	M	8.8	94	1.48	A	11.5
9	F	15.3	95.3	1.50	A	2.5
10	M	8.10	93.3	1.50	B	9.1
11	F	7.9	93.3	1.50	A	9.6
12	F	9.8	93.3	1.50	B	8.4
13	F	10.5	93	1.50	A	8.6
14	F	10.6	94	1.53	A	9.3
15	M	10.2	94	1.55	A	13.5
16	M	8.6	94	1.58	A	9.1
17	F	9.9	95	1.63	A	9.2
18	F	8.9	95	1.66	B	9.3
19	F	10.2	95	1.66	B	10.6
20	F	7.9	95.5	1.70	A	13.3
21	M	13.11	96.4	1.80	A	7.9
		Mean 10.6				Median 9.3

Note: Wear time was microelectronically documented during 5 months of treatment.

Abbreviations: BMI, body mass index; SDS, standard deviation score; M, male; A, upper jaw active plates; B, jumping-the-bite appliances; F, female.

Table 2 Demographics and wear times of obese (BMI percentile 97<99.5) and severely obese (≥99.5) (defined by BMI percentile) children and adolescents undergoing orthodontic therapy

Patient number	Sex	Age in years	BMI percentile	SDSLMS	Treatment appliance type	Daily wear time in hours
Obese
22	M	9.4	97	1.82	A	12.0
23	F	12.7	97	1.84	B	7.7
24	F	11.4	97	1.89	B	10.3
25	M	13.8	97	1.91	B	7.7
26	F	8.1	97	1.96	A	6.4
27	M	11.9	97.7	2.00	B	9.5
28	M	8.0	97.7	2.00	B	10.1
29	F	15.7	98	2.02	B	6.0
30	M	14.4	98	2.07	B	8.0
31	M	12.6	98.9	2.30	B	8.6
32	M	11.3	99	2.19	B	5.6
		Mean 11.9				Median 8.0
Severely obese
33	M	11.7	≥99.5	2.38	B	8.4
34	M	13.9	≥99.5	2.47	A	6.0
35	M	15.1	≥99.5	2.67	B	7.8
36	M	15.9	≥99.5	2.75	B	7.5
37	F	11.2	≥99.5	2.90	B	9.2
38	M	8.4	≥99.5	2.94	A	11.3
39	M	10.11	≥99.5	2.90	B	14.6
		Mean 12.9				Median 8.4

Note: Wear time was microelectronically documented during 5 months of treatment.

Abbreviations: BMI, body mass index; SDS, standard deviation score; M, male; A, removable orthodontic plates; F, female; B, functional appliances.

Figure 1 BMIs of 21 overweight patients (patient numbers 1–21) at the beginning of treatment and at the second measurement, 6–35 months later.

Notes: Black column: beginning of treatment; gray column: second measurement (6–35 months later). Months between first and second BMI evaluations are given in the second line.
Abbreviation: BMI, body mass index.

Figure 2 BMIs of eleven obese (patient numbers 22–32) and seven severely obese (patient numbers 33–39) patients at the beginning of treatment and at the second measurement, 6–35 months later.

Notes: Black column: beginning of treatment; gray column: second measurement (6–35 months later). Months between first and second BMI evaluation are given in the second line.
Abbreviation: BMI, body mass index.