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Table 1 Characteristics of study sample, N (%)

From: Three-dimensional assessment of the favorability of maxillary posterior teeth intrusion in different skeletal classes limited by the vertical relationship with the maxillary sinus floor

 

Total

Class I

Class II

Class III

N=4768

N=1632

N=1632

N=1504

Age group

 20-30

3600(75.5)

1168(71.6)

1184(72.5)

1248(83.0)

 >30

1168(24.5)

464(28.4)

448(27.5)

256(17.0)

Gender

 Male

2320(48.7)

816(50.0)

816(50.0)

688(45.7)

 Female

2448(51.3)

816(50.0)

816(50.0)

816(54.3)

Type

 Sagital

4768(50.0)

1632(50.0)

1632(50.0)

1504(50.0)

 Coronal

4768(50.0)

1632(50.0)

1632(50.0)

1504(50.0)

Tooth side

 Right

2384(50.0)

816(50.0)

816(50.0)

752(50.0)

 Left

2384(50.0)

816(50.0)

816(50.0)

752(50.0)

Root type

 U4

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U5

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U6MB

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U6DB

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U6P

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U7MB

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U7DB

596(12.5)

204(12.5)

204(12.5)

188(12.5)

 U7P

596(12.5)

204(12.5)

204(12.5)

188(12.5)