Table 1 The range of inter-second-molar distances that determined arch size of each form
From: Maxillary and mandibular dental arch forms in a Jordanian population with normal occlusion
Arch size (mm) | Mandible | Maxilla | ||||
|---|---|---|---|---|---|---|
Small | Medium | Large | Small | Medium | Large | |
Arch form | ||||||
1 | 44–49 | 50–54 | 55–60 | 51–55 | 56–60 | 61–66 |
2 | 44–49 | 50–54 | 55–60 | 50–54 | 55–59 | 60–64 |
3 | 46–50 | 51–54 | 55–60 | 51–55 | 56–59 | 60–64 |
4 | 45–50 | 51–56 | 57–62 | 50–53 | 54–58 | 59–62 |
5 | 43–48 | 49–55 | 56–60 | 48–52 | 53–57 | 58–62 |