Dentovio public answer
Which tooth is number 20?
In the Universal Numbering System, tooth 20 is the lower left second premolar (mandibular left second premolar). Its FDI (ISO 3950) designation is 35 and its Palmer designation is 5 in the lower left quadrant. It is a premolar in the lower arch with typically 1 root.
- Cluster
- Tooth numbering reference
- Last verified
- 2026-07-08
- Reviewer
- See source page
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Query patterns
- Which tooth is number 20?
- Tooth 20: Lower Left Second Premolar
- Which tooth is 20?
- What is tooth number 20 in FDI and Palmer notation?
- Which tooth is FDI 35?
- What is FDI 35 in Universal numbering?
- FDI 35 to Universal tooth number
- ISO 3950 tooth 35
- Which tooth is Palmer 5 Lower Left?
- Palmer 5 Lower Left to Universal
- Lower Left Palmer 5 tooth
- LL Palmer 5 permanent tooth
- Lower Left Second Premolar tooth number
- Universal 20 FDI 35 Palmer 5
- which tooth is number 20?
- tooth 20
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- adult tooth 20
- lower left second premolar
- mandibular left second premolar
- fdi 35