Table 2.

PAR index.

PAR components	Before treatment	Total	After treatment	Total
Upper right segment	Discrepancy between 0 mm and 1 mm	0	Discrepancy between 0 mm and 1 mm	0
Upper anterior segment	Discrepancy between 4.1 mm and 8 mm	3	Discrepancy between 0 mm and 1 mm	0
Upper left segment	Discrepancy between 1.1 mm and 2 mm	1	Discrepancy between 0 mm and 1 mm	0
Lower right segment	Discrepancy between 1.1 mm and 2 mm	1	Discrepancy between 0 mm and 1 mm	0
Lower anterior segment	Discrepancy between 4.1 mm and 8 mm	3	Discrepancy between 0 mm and 1 mm	0
Lower left segment	Discrepancy between 1.1 mm and 2 mm	1	Discrepancy between 0 mm and 1 mm	0
Right buccal occlusion	Half a unit discrepancy (cusp to cusp) 2 More than one tooth in scissor bite 4	6	Good interdigitation classes I, II, and III 0 No discrepancy in intercuspation 0 No crossbite 0	0
Overjet	Overjet between (5.1–7 mm) 5.3 mm	2	Overjet between (5.1–7 mm) 5,4 mm	2
Overbite	Greater than two-thirds coverage of the lower incisors	2	Greater than one-thirds but less than two-thirds coverage of the lower incisors	1
Centerline	One-quarter to one-half lower incisor width	1	One-quarter to one-half lower incisor width	1
Left buccal occlusion	Less than half unit discrepancy 1 Lateral open bite on at least two teeth greater than 2 mm 1 Single tooth in crossbite 2	4	Good interdigitation classes I, II, and III 0 No discrepancy in intercuspation 0 No crossbite 0	0
Total		24		4