| Open end wrench | 08435482608031 | MOZO GRAU SA | Class I | |
| Opera Mach 2 | 06970163080512 | Shining 3D Tech Co., Ltd. | Class I | |
| Operation Microscopes | 06973058895000 | Foshan SOCO Precision Instrument Co.,Ltd. | Class I | |
| Oral Bite Block and Imaging Base | 06980017220018 | Shanghai Yatu Healthcare Co., Ltd. | Class I | |
| ORAL SWAB | 06975394400801 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| ORAL SWAB | 06975394400818 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| ORAL SWAB | 06975394400825 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| ORAL SWAB | 06975394400832 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| ORAL SWAB | 06975394400931 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| ORAL SWAB | 06975394400948 | LINYE HEALTH TECH(NINGBO)CO.,LTD | Class I | |
| Ordoline Aligner | 04778010700109 | Ordoline, UAB | Class I | |
| Ordoline Retainer | 04778010700116 | Ordoline, UAB | Class I | |
| Organic PMMA RO | +EPOL6738160R | Polident d.o.o. Industrija dentalnih proizvodov | Class I | |
| Orion Kit | 06941877826598 | Changzhou Sifary Medical Technology Co., Ltd. | Class I | |
| Orion Kit | 06941877826604 | Changzhou Sifary Medical Technology Co., Ltd. | Class I | |
| Orion Kit | 06941877826611 | Changzhou Sifary Medical Technology Co., Ltd. | Class I | |
| OroCare Toothbrush | 05030267098972 | Intersurgical Ltd | Class I | |
| OroCare Toothbrush | 05030267143504 | Intersurgical Ltd | Class I | |
| Orthodontical tweezers | +ECMSDUMMY086/$H | Carl Martin GmbH | Class I | |
| Orthodontic Arch Wire Box | 06978049074433 | Anson Investment Development Co.,Ltd. | Class I | |
| Orthodontic Power Chain Box | 06978049074440 | Anson Investment Development Co.,Ltd. | Class I | |
| OrthoPulse 2.0E | 09120118090074 | Biolux Technology GmbH | Class IIa | |
| OrthoPulse 2.0S | 09120118090067 | Biolux Technology GmbH | Class IIa | |
| OrthoPulse Lite | 91201180900032 | Biolux Technology GmbH | Class IIa | |
| OS-200 | 06970163081601 | Shining 3D Tech Co., Ltd. | Class I | |
| OS-300 | 06970163081861 | Shining 3D Tech Co., Ltd. | Class I | |
| OS GOLDY | 06970163082103 | Shining 3D Tech Co., Ltd. | Class I | |
| Osseo 100 Instrument | 07350096320265 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseo 100+ Instrument | 07350096320272 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseo 100 Set | 07350096320234 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseo 100+ Set | 07350096320258 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseo 100+ Straumann Instrument | 07350096320500 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseo 100+ Straumann Set | 07350096320517 | Integration Diagnostics / NSK Nordic | Class I | |
| Osseotite NT® | 00844868012375 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012399 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012412 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012429 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012436 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012443 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012450 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012467 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012474 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012498 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012511 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012528 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012535 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012542 | ZimVie US Corp LLC | Class I | |
| Osseotite NT® | 00844868012559 | ZimVie US Corp LLC | Class I | |
| OSSEOTITE NT® | 00844868012368 | ZimVie US Corp LLC | Class I | |
| OSSEOTITE NT® | 00844868012382 | ZimVie US Corp LLC | Class I | |
UDI Compass