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Table 2 Slot height in the different batches for each system (interbatch variability of slot height)

From: Compliance with the ISO 27020:2019 norm of a sample of currently available preadjusted Orthodontic bracket systems. Are the actual dimensions as expected?

Bracket system

Batch 1

Batch 2

Batch 3

 

N

Mean (± SD)

N

Mean (± SD)

N

Mean (± SD)

p

SYNTHESIS

NU-EDGE

DISCOVERY

FLI TWIN

MINI SPRINT

OMNIARCH+

SCAPE

MINI-TWIN

JAZZ

MINI MASTER

MINIPREVAIL

VICTORY

10

10

10

10

10

10

10

10

10

10

10

10

0.555 (± 0.007)

0.578 (± 0.011)

0.560 (± 0.002)

0.571 (± 0.012)

0.562 (± 0.003)

0.559 (± 0.002)

0.560 (± 0.002)

0.554 (± 0.007)

0.553 (± 0.003)

0.552 (± 0.005)

0.564 (± 0.005)

0.600 (± 0.001)

10

10

10

10

10

10

10

10

10

10

10

10

0.557 (± 0.002)

0.577 (± 0.008)

0.575 (± 0.010)

0.564 (± 0.004)

0.566 (± 0.004)

0.561 (± 0.002)

0.566 (± 0.010)

0.553 (± 0.004)

0.539 (± 0.009)

0.545 (± 0.003)

0.558 (± 0.003)

0.560 (± 0.002)

10

10

10

10

10

10

10

10

10

10

10

10

0.557 (± 0.002)

0.568 (± 0.007)

0.577 (± 0.007)

0.563 (± 0.004)

0.572 (± 0.003)

0.560 (± 0.003)

0.561 (± 0.002)

0.555 (± 0.004)

0.553 (± 0.006)

0.547 (± 0.003)

0.559 (± 0.002)

0.600 (± 0.002)

0.901

0.041*

< 0.001***

0.401

< 0.001***

0.082

0.126

0.516

< 0.001***

0.010*

0.012*

0.965

  1. SD Standard deviation; A multivariate ANOVA was performed for NU-EDGE®. DISCOVERY®. MINI SPRINT® and JAZZ® a Kruskal-Wallis test in others systems; *p ≤ .05; **p < .01; ***p < .001