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Table 3 Intraclass correlation coefficient (ICC) in MZ, DZ, and sibling groups

From: Twin study—genetic comparison of matrix versus intramatrix rotation in the mandible and three different occlusal planes

Variables

ICCMZ

ICCDZ

ICCSib

Bisected OP (to SN)

0.83***

0.64*

0.62**

Bisected OP (to FH)

0.85***

0.35

0.48

Functional OP (to SN)

0.75***

0.49

0.57

Functional OP (to FH)

0.79***

0.41

0.36

MM bisector OP (to SN)

0.87***

0.66*

0.68*

MM bisector OP (to FH)

0.86***

0.59

0.51

Mn. plane angle (to SN): MR

0.87***

0.62

0.55

Mn. plane angle (to FH)

0.86***

0.49

0.41

Palatal plane angle (to SN)

0.82***

0.48

0.65*

Palatal plane angle (to FH)

0.82***

0.53

0.53*

Corpus axis (to SN): TR

0.85***

0.61

0.45

Corpus axis (to FH)

0.81***

0.51

0.24

Corpus axis (to MP): IR

0.74**

0.67*

0.24

  1. MZ Monozygotic twin, DZ Dizygotic twin, Sib Sibling, OP Occlusal plane, SN SN plane, FH FH plane, MP Mandibular plane, MR Matrix rotation, TR Total rotation, IR Intramatrix rotation
  2. *P < .05, **P < .01, ***P < .001