What is the Oral Health-related Quality of Life following Miniscrew-Assisted Rapid Palatal Expansion (MARPE)? A prospective clinical cohort study

Table 2 Results of the OHIP and pain questionnaires

	T0	P1										P2
	T0	Week 1	Week 2	Week 3	Week 4	Week 5	Week 6	Week 7	Week 8	Week 9	Week 10	P2
N	42	42	42	42	35	23	9	7	5	1	1	42
Mean OHIP-score	10.86 ± 9.71	25.00 ± 10.25	17.88 ± 9.43	15.69 ± 9.03	14.51 ± 9.74	14.00 ± 9.61	12.67 ± 8.38	14.29 ± 12.76	9.80 ± 6.65	4.00	0.00	9.27 ± 7.92
Mean VAS-score for average pain (mm)		34.38 ± 23.72	17.97 ± 17.31	10.66 ± 13.78	8.83 ± 14.83	8.81 ± 13.48	9.83 ± 17.42	6.18 ± 11.35	2.68 ± 5.08	0.00 ± 0.00	2.86 ± 4.98
Mean VAS-score for maximum pain (mm)		44.33 ± 27.01	26.43 ± 21.64	16.68 ± 18.79	14.00 ± 19.54	14.37 ± 17.45	14.37 ± 22.38	13.24 ± 18.72	4.87 ± 5.98	0.00 ± 0.00	3.71 ± 5.19
Mean score for analgesics intake (%)		56 ± 50	20 ± 40	14 ± 35	10 ± 30	10 ± 30	14 ± 35	8 ± 28	0 ± 0	0 ± 0	0 ± 0

The OHIP-score ± SD at T0, for each week of P1 and for P2 are shown, as well as the sample size (N) per time point. p < 0.001 for mean OHIP change T0–P1 and P1–P2; p = 0.907 for mean OHIP change T0–P2, as calculated with the Kruskal–Wallis test after the Shapiro–Wilk test showed non-normal distribution of data. The VAS-score ± SD (mm) for average pain, maximum pain and the score for analgesics intake ± SD (%) are shown for each week of P1. The data of every 7 consecutive daily pain questionnaires were pooled and mean weekly scores for pain and analgesics intake were calculated. The VAS-score ± SD (mm) for average pain, maximum pain and the score for analgesics intake ± SD (%) are shown for each week of P1

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