Skip to main content

Table 4 Slot height, Slot Geometry and Interbach variability in the different bracket systems

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

 

Slot Height

  

Batch 1

Batch 2

Batch 3

 

Bracket system

N

Mean (± SD)

p

Slot Geometry

N/ batch

Mean (± SD)

Mean (± SD)

Mean (± SD)

p

SYNTHESIS

30

0.556(± 0.004)

< 0.001***

<

10

0.555 (± 0.007)

0.557 (± 0.002)

0.557 (± 0.002)

0.901

NU-EDGE

30

0.574(± 0.010)

< 0.001***

<

10

0.578 (± 0.011)

0.577 (± 0.008)

0.568 (± 0.007)

0.041*

DISCOVERY

30

0.570(± 0.010)

< 0.001***

=

10

0.560 (± 0.002)

0.575 (± 0.010)

0.577 (± 0.007)

< 0.001***

FLI TWIN

30

0.566(± 0.008)

< 0.001***

<

10

0.571 (± 0.012)

0.564 (± 0.004)

0.563 (± 0.004)

0.401

MINI SPRINT

30

0.567(± 0.005)

< 0.001***

<

10

0.562 (± 0.003)

0.566 (± 0.004)

0.572 (± 0.003)

< 0.001***

OMNIARCH +

30

0.560(± 0.002)

0.010**

>

10

0.559 (± 0.002)

0.561 (± 0.002)

0.560 (± 0.003)

0.082

SCAPE

30

0.562(± 0.006)

< 0.001***

<

10

0.560 (± 0.002)

0.566 (± 0.010)

0.561 (± 0.002)

0.126

MINI-TWIN

30

0.554(± 0.005)

< 0.001***

<

10

0.554 (± 0.007)

0.553 (± 0.004)

0.555 (± 0.004)

0.516

JAZZ

30

0.548(± 0.009)

< 0.001***

=

10

0.553 (± 0.003)

0.539 (± 0.009)

0.553 (± 0.006)

< 0.001***

MINI MASTER

30

0.548(± 0.005)

< 0.001***

<

10

0.552 (± 0.005)

0.545 (± 0.003)

0.547 (± 0.003)

0.010*

MINIPREVAIL

30

0.560(± 0.004)

0.078

<

10

0.564 (± 0.005)

0.558 (± 0.003)

0.559 (± 0.002)

0.012*

VICTORY

30

0.560(± 0.001)

< 0.001***

<

10

0.600 (± 0.001)

0.560 (± 0.002)

0.600 (± 0.002)

0.965

  1.  N number of brackets assessed; SD Standard deviation; the difference between nominal and actual values was assessed through a Wilcoxon test *p ≤ .05; **p < .01; ***p < .001; <: divergent slot geometry; > convergent slot geometry; =: parallel slot walls; N/batch: number of brackets assessed per batch; the difference between the different batches was assessed through A multivariate ANOVA for NU-EDGE®. DISCOVERY®. MINI SPRINT® and JAZZ® a Kruskal-Wallis test in others systems; *p ≤ .05; **p < .01; ***p < .001