Three-dimensional analysis of miniscrew position changes during bone-borne expansion in young and late adolescent patients

Migliorati, Marco; De Mari, Anna; Annarumma, Fabio; Aghazada, Hussein; Battista, Giovanni; Campobasso, Alessandra; Menini, Maria; Lo Giudice, Antonino; Cevidanes, Lucia H. S.; Drago, Sara

doi:10.1186/s40510-023-00469-0

Progress in Orthodontics

Table 1 Descriptive statistics of the different linear and angular miniscrew measurements at baseline (T0) and T1

From: Three-dimensional analysis of miniscrew position changes during bone-borne expansion in young and late adolescent patients

	T0	T1	p value
Frontal view
Anterior miniscrews—interhead distance (mm)	6.09 ± 0.61	13.39 ± 2.07	< 0.001*
Right anterior miniscrew—head to POP distance (mm)	2.82 ± 1.25	6.14 ± 1.35	< 0.001*
Left anterior miniscrew—head to POP distance (mm)	3.24 ± 1.32	7.51 ± 2.05	< 0.001*
Anterior miniscrews- intertip distance (mm)	6.19 ± 0.64	10.78 ± 2.18	< 0.001*
Right anterior miniscrew—tip to POP distance (mm)	3.07 ± 0.89	5.69 ± 1.05	< 0.001*
Left anterior miniscrew—tip to POP distance (mm)	3.18 ± 1.13	5.35 ± 1.97	< 0.001*
Posterior miniscrews- interhead distance (mm)	15.89 ± 3.16	24.04 ± 3.56	< 0.001*
Right posterior miniscrew—head to POP distance (mm)	7.58 ± 1.72	11.87 ± 1.95	< 0.001*
Left posterior miniscrew—head to POP distance (mm)	8.23 ± 2.56	12.27 ± 2.90	< 0.001*
Posterior miniscrews- intertip distance (mm)	44.72 ± 4.93	46.37 [43.37, 48.61]	0.418
Right posterior miniscrew—tip to POP distance (mm)	23.09 [19.73, 24.38]	23.32 ± 2.39	0.020*
Left posterior miniscrew—tip to POP distance (mm)	22.97 ± 2.69	23.15 ± 2.75	0.734
Right posterior miniscrew—angle to occlusal plane (°)	35.63 [34.56, 37.33]	37.91 [36.34, 43.99]	0.055
Left posterior miniscrew—angle to occlusal plane (°)	33.61 ± 5.76	43.26 [33.79, 45.27]	0.002*
Right anterior miniscrew—angle to occlusal plane (°)	87.99 ± 1.58	87.34 [85.24, 87.75]	0.011*
Left anterior miniscrew—angle to occlusal plane (°)	88.09 ± 1.44	83.30 [80.02, 85.62]	< 0.001*
Lateral view
Right anterior miniscrew—angle to occlusal plane (°)	67.19 ± 8.23	66.90 ± 9.58	0.780
Left anterior miniscrew—angle to occlusal plane (°)	66.95 ± 7.97	67.32 ± 11.47	0.771
Right posterior miniscrew—angle to occlusal plane (°)	63.81 ± 7.73	65.20 [61.25, 71.34]	0.417
Left posterior miniscrew—angle to occlusal plane (°)	66.54 ± 9.71	68.70 [51.13, 77.30]	0.899

POP, perpendicular to occlusal plane. Results are expressed as Mean ± Standard Deviation or Median [Interquartile Range]. P value: paired t test, or Wilcoxon signed rank test, p value. *statistically significant

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