Twenty cases of lower incisor agenesis in Vietnamese people
| Case | Age (years) | Sex | Missing permanent tooth | Dental findings | Skeletal classification | Presence of agenesis in family |
|---|---|---|---|---|---|---|
| Summary of affected people with congenitally missing teeth, other dental findings, cephalometric analysis, and family history of lower incisor agenesis. No ceph (cephalometric analysis), no lateral head film available. Yes, the subject has an affected relative. | ||||||
| 1 | 11 | F | Two mandibular incisors | Class III molars, class II cuspids, shovel shaped maxillary incisors | Skeletal class II | Yes: maternal cousin |
| 2 | 15 | M | One mandibular incisor | Full molar class III, class III cuspids, shovel shaped maxillary incisors | Skeletal class I | Yes: mother |
| 3 | 8 | F | One mandibular incisor | Class III molar relationship, cuspids not erupted yet, shovel shaped incisors | Skeletal class III | Yes: brother |
| 4 | 23 | F | Two mandibular incisors | Class III molar, class III cuspids, anterior open bite, | Skeletal class II | Yes: daughter, son |
| 5 | 12 | F | One mandibular incisor | Class III molar subdivision right, class III cuspids, shovel shaped incisors | Skeletal class I, | Yes, mother missing 1 lower incisor |
| 6 | 16 | F | One mandibular incisor | Class III molar, block out left maxillary cuspid, right peg lateral maxillary incisor | Skeletal class II | Yes: father |
| 7 | 12 | M | One mandibular incisor | Class III molar, minimal, shovel shaped incisors | No ceph | Yes: brother |
| 8 | 14 | One mandibular incisor | Class III molar, moderate, shovel shaped incisor | No ceph | Yes: brother | |
| 9 | 18 | F | Two mandibular incisors | Class III molar, class III cuspids arch, shovel shaped incisor | No ceph | Yes: father |
| 10 | 16 | M | One mandibular incisor | Class I molar, class III cuspid, shovel shaped incisors | Skeletal class I | No, brother has congenitally 1 missing maxillary lateral incisor |
| 11 | 18 | F | Two mandibular incisors | Class III molar, class III cuspids, shovel shaped incisors | Skeletal class I | None from immediate family |
| 12 | 18 | M | Two mandibular incisors | Class III molar, class III cuspids, shovel shaped incisor | Skeletal class I, | None from immediate family |
| 13 | 5 | F | One mandibular permanent incisor | Distal step of primary molars, fusion of primary B and C | No ceph | Yes: mother |
| 14 | 12 | F | Two mandibular incisors, upper 3rd molars | Class I molar, blocked out cuspids, shovel shaped incisor | Skeletal class I | Yes: 2 of 3 sisters |
| 15 | 30 | M | Two mandibular incisors | Class III molar, extraction of lower right 1st molar, lower left 3rd molar | Skeletal class I | Yes: mother and sister |
| 16 | 11 | F | Two mandibular incisors | Full molar class III, class III cuspid, blocked out maxillary cuspids | Skeletal class III, | No |
| 17 | 32 | M | One mandibular incisor | Class I molar, | No ceph | Yes: son, daughter |
| 18 | 7 | M | One mandibular incisor | Class I molar | No ceph | Yes: father |
| 19 | 30 | F | Two mandibular incisors | Class III molar | No ceph | Yes: both mother and father, 3 of 4 sibs |
| 20 | 27 | F | One mandibular incisor | Class I molar, minimal crowding in maxillary and mandibular arches | No ceph | Yes: two aunts |