Case Report

Clear Aligners and Miniscrews in a Scissor Bite Adult Treatment

Table 2

PAR index.

PAR componentsBefore treatmentTotalAfter treatmentTotal

Upper right segmentDiscrepancy between 0 mm and 1 mm0Discrepancy between 0 mm and 1 mm0
Upper anterior segmentDiscrepancy between 4.1 mm and 8 mm3Discrepancy between 0 mm and 1 mm0
Upper left segmentDiscrepancy between 1.1 mm and 2 mm1Discrepancy between 0 mm and 1 mm0
Lower right segmentDiscrepancy between 1.1 mm and 2 mm1Discrepancy between 0 mm and 1 mm0
Lower anterior segmentDiscrepancy between 4.1 mm and 8 mm3Discrepancy between 0 mm and 1 mm0
Lower left segmentDiscrepancy between 1.1 mm and 2 mm1Discrepancy between 0 mm and 1 mm0
Right buccal occlusionHalf a unit discrepancy (cusp to cusp) 2
More than one tooth in scissor bite 4
6Good interdigitation classes I, II, and III 0
No discrepancy in intercuspation 0
No crossbite 0
0
OverjetOverjet between (5.1–7 mm) 5.3 mm2Overjet between (5.1–7 mm) 5,4 mm2
OverbiteGreater than two-thirds coverage of the lower incisors2Greater than one-thirds but less than two-thirds coverage of the lower incisors1
CenterlineOne-quarter to one-half lower incisor width1One-quarter to one-half lower incisor width1
Left buccal occlusionLess than half unit discrepancy 1
Lateral open bite on at least two teeth greater than 2 mm 1
Single tooth in crossbite 2
4Good interdigitation classes I, II, and III 0
No discrepancy in intercuspation 0
No crossbite 0
0
Total244