| Exhibitor | Country | Hall | Exhibitor | Internet |
| O.R. Lasertechnologie GmbH | Germany | 04.2 | N050 | |
| Obtura/Spartan | United States of America | 04.2 | J059 | www.obtura.com |
| OCO Präparate GmbH | Germany | 10.2 | V040 | www.oco-praeparate.de |
| OralCDx Laboratories, Inc. | United States of America | 04.2 | H057 | www.brushtest.com |
| Odontit S.A. | Argentina | 11.2 | M032 | www.odontit.com |
| Odontomedics Ind. de Equipamentos Medico-Odontológicos Ltda | Brazil | 11.3 | C059 | www.odontomedics.com.br |
| Odontotecnica Made In Italy | Italy | 03.2 | F070 G071 | |
| ODUS TECHNOLOGIES SA | Switzerland | 10.1 | A068 B069 | www.pdsa.ch |
| M. Oelgeschläger GmbH | Germany | 04.1 | F068 | www.oelgeschlaeger.com |
| OEMUS MEDIA AG | Germany | 04.1 | E060 F069 | www.oemus.com |
| Okey BV | Netherlands | 04.2 | L030 | www.okey.nl |
| ökoDENT Preußer OHG | Germany | 11.3 | C030 | www.oekodent.de |
| Olsen Indústria e Comércio S/A | Brazil | 11.3 | E058 F059 | www.olsen.odo.br |
| OLYMPUS CORPORATION | Japan | 03.2 | F050 G051 | www.olympus.co.jp |
| OMBI S.r.l. | Italy | 04.1 | C029 | www.ombi.it |
| O.M.E.C. s.n.c. | Italy | 11.2 | Q034 | www.omec-snc.com |
| OMNIA S.p.A.x | Italy | 04.1 | D090 E091 | www.omniaspa.eu |
| Omnident Dentalhandelsgesellschaft mbH | Germany | 11.3 | A008 | www.omnident.de |
| O.M.S. S.p.A. OFFICINE MECCANICHE SPECIALIZZATE | Italy | 10.1 | E061 | www.omsstaff.com |
| One Drop Only GmbH | Germany | 11.1 | F008 | www.onedroponly.de |
| Op-d-op, Inc. | United States of America | 04.2 | L072 | www.opdop.com |
| OPEN MIND Technologies AG | Germany | 03.1
03.2
03.2 | H078 J079
A049
A049a | www.openmind-tech.com |
| OPTI Zahnarztberatung GmbH | Germany | 11.2 | O020 | www.opti-zahnarztberatung.de |
| OptiDent LTD | United Kingdom | 10.2 | M056 | www.optident.co.uk |
| OPTOMIC ESPANA S.A. | Spain | 11.1 | E020 | www.optomic.com |
| ORAL ICEBERG S.L. | Spain | 03.1 | H048 | www.ceraroot.com |
| Oral-Prevent GmbH | Germany | 10.2 | U036 | www.oral-prevent.de |
| Oraltech Instruments Pvt. Ltd. | Pakistan | 03.2 | F077 | |
| orangedental GmbH & Co. KG | Germany | 11.2 | M040 N049 | www.orangedental.de |
| Orascoptic Research, Inc. | United States of America | 10.1
10.2 | J030
R038 S039 | www.orascoptic.com |
| Oratech, LLC | United States of America | 04.2 | K051 | www.oratech.com |
| Oratio B.V. | Netherlands | 03.2 | A045 | www.oratio.nl |
| Orbis Dental Handels GmbH | Germany | 04.1 | E050 F059 | |
| ORIDIMA Dentalinstrumente GmbH & Co. KG | Germany | 10.2 | R064 | www.oridima.de |
| Oriservice srl | Italy | 03.1 | L061 | www.oriservice.it |
| Oro Clean Chemie AG | Switzerland | 10.1 | H072 | www.oroclean.com |
| Oros Dentales S.A. | Spain | 11.2 | N030 | www.ordenta.es |
| OroScience, Inc. | United States of America | 04.2 | J067 | www.oroscience.com |
| OROTIG s.r.l. | Italy | 10.1 | F062 | www.orotig.com |
| J.H. ORSING AB | Sweden | 10.2 | V012 | www.orsing.se |
| Ortho Classic, Inc. | United States of America | 04.2 | K063 | www.orthoclassic.com |
| Ortho Organizers GmbH | Germany | 10.2 | M069 | www.orthoorganizers.de |
| Ortho Organizers, Inc. | United States of America | 04.2 | M075 | www.orthoorganziers.com |
| Ortho Space S.A. World Trade Centre | Switzerland | 03.1 | H051 | |
| Ortho Technology, Inc. | United States of America | 04.2 | J070 | www.orthotechnology.com |
| OrthoQuest, LLC | United States of America | 04.2 | K080 | www.orthoquest.com |
| Orthos Fachlabor für Kiefer- orthopädie GmbH & Co. KG | Germany | 03.1 | L031 | www.orthos.de |
| Orthotec s.l. | Germany | 11.3 | D071 | www.noxrayceph.de |
| ORTO-TEK ORTO. VE DIS. MALZ. LAB. HIZM. IML. ITH. IHR. VE SAN. TIC. LTD. STI. | Turkey | 11.3 | J028 K029 | www.orto-tek.com |
| OSADA ELECTRIC CO., LTD. | Japan | 11.2 | K059 | http://www.osada-electric.co.jp/English/ |
| OSSACUR AG | Germany | 11.3 | B070 | www.ossacur.de |
| OSSTELL AB | Sweden | 03.2 | C061 | www.osstell.com |
| OSSTEM IMPLANT Co., Ltd. | Korea, Republic of | 04.1
04.1
04.1 | A008
A010 C019
A019 | www.osstem.com |
| Osung MND Co., Ltd. | Korea, Republic of | 03.2 | D060 E061 | www.osungdent.co.kr |
| OSWELL Dental | China | 11.3 | L069a | http:\dental.oswell.com.cn |
| OWANDY S.A.S. | France | 11.1 | D051 | www.owandy.com |
| OXYPHARM SARL | France | 11.1 | C020 D021 | |
| ÖZEL BIONIK DENTAL COK AMACLI DIS PROTEZ LAB. San. ve Tic. Ltd. Sti. | Turkey | 03.2 | E044 | www.bionik-dental.com.tr |
| Özel Lüks Emre Dis Prot. Malz. San. Tic. Ltd. Sti. | Turkey | 03.1 | L029 | www.lukseme.com |
