Knowledge differences between general practitioners and orthodontists about Invisalign clear aligner treatment – a cross-sectional survey-based study

Figures & data

Table 1. The demographic differences between the participating general practitioners and orthodontists.

Variables		Dentists	Orthodontists	p value
Age	20–30 years	94**	5	<0.0001
	31–40 years	16	71**
	41–50 years	1	18**
	51–60 years	0	8*
Gender	Females	65**	34	<0.001
	Males	46	68**
Main working place	Academic institutions	11	20	n.s.
	Public hospitals	47	30
	Private clinic	53	52
Clinical hours per week	Less than 15 hours	12	9	n.s.
	15–30 hours	18	28
	30–40 hours	43	28
	More than 40 hours	38	37

Statistically significant post hoc differences; *p value < 0.01, **p value < 0.001.

n.s., insignificant Chi-square test at p value 0.05.

Table 2. The knowledge differences of general practitioners and orthodontists about the investigated Invisalign treatment domains.

	Dentist						Orthodontist
	Worse		Equal		Better		Worse		Equal		Better		p value
Question # G	31		56		24***		45		51		6		0.001
	Do not know	Strongly disagree	Disagree	Neutral	Agree	Strongly agree	Do not know	Strongly disagree	Disagree	Neutral	Agree	Strongly agree
Question # H1	5	18	58	18	12	0	0	11	37	16	29	9	0.0001
Question # H2	7	5	14	12	46	27	0	5	7	15	44**	31**	n.s.
Question # H3	11**	5	15	26	43	11	0	7	22	33	32	8	0.009
Question # H4	7*	3	11	23	48	19	0	4	9	15	41	33*	0.023
Question # H5	21***	2	6	26	42	14	2	3	17**	32	34	14	0.0005
Question # H6	11**	2	5	20	48	25	0	0	8	17	47	30	0.015
Question # H7	40***	2	10	38	18	3	4	14***	28***	40	16	0	<0.0001
Question # H8	47***	0	5	40	18	1	4	14***	28***	48	8	0	<0.0001
Question # H9	15***	14	37	28	14	3	1	17	46	14	21	3	0.002
Question # H10	28***	5	19	36	19***	4	1	29***	43***	25	2	2	<0.0001
Question # I	4	3	0	7	42	55	0	2	0	8	40	52	n.s.
Question # J	37***	0	10	28	31	5	6	5	12	28	45*	6	<0.0001

Post hoc differences: *, 0.05–0.01; **, <0.01; ***, <0.001.

n.s., insignificant Chi-square test at p value 0.05.