EXHIBIT 21.1

Subsidiaries of PracticeWorks, Inc.

PracticeWorks, Inc. (the “Company”) currently has the following wholly-owned first tier subsidiaries:

1. SoftDent, LLC, a Delaware limited liability company.

2. CADI Acquisition Corporation, a Colorado corporation.

3. PracticeWorks Systems, LLC, a Georgia limited liability company.

4. Swenam Holdings B.V., a Netherlands corporation (“Swenam”).

5. PracticeWorks Australia Pty. Limited (f/k/a InfoCure Australia Pty. Limited), an Australian corporation (“PracticeWorks Australia”).

6. Practiceworks Canada Ltd., a Canadian corporation.

7. PracticeWorks Capital, Inc., a Delaware corporation.

The Company has the following indirect wholly-owned second tier subsidiaries:

1. PracticeWorks Limited (f/k/a Miniseries Limited), a United Kingdom limited company, a first tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

2. PracticeWorks Sweden AB (f/k/a Scandic Dental Computer Systems AB), a Swedish company, a first tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

3. PracticeWorks Orthodontics Pty. Limited (f/k/a InfoCure Orthodontics Pty.), an Australian corporation, a first tier subsidiary of PracticeWorks Australia and an indirect, wholly-owned subsidiary of the Company.

4. PracticeWorks France, a French corporation, a first tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

The Company has the following indirect wholly-owned third tier subsidiaries:

1. Dentrak Limited, a United Kingdom limited company, a first tier subsidiary of PracticeWorks Limited, a second tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

2. Team Management Systems Limited, a United Kingdom limited company, a first tier subsidiary of PracticeWorks Limited, a second tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

3. SDS Computer Holdings Limited, a United Kingdom corporation, a first tier subsidiary of PracticeWorks Limited, a second tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

4. Trex Medical France, a French corporation, a first tier subsidiary of PracticeWorks France, a second tier subsidiary of Swenam and an indirect, wholly-owned subsidiary of the Company.

The Company has the following indirect wholly-owned fourth tier subsidiaries:

1. The Dental Health Education Centre Limited, a United Kingdom limited company, a first tier subsidiary of Team Management Systems Limited, a second tier of PracticeWorks Limited, and an indirect wholly-owned subsidiary of the Company.

2. Dental Network Information Services Limited, a United Kingdom limited company, a first tier subsidiary of Team Management Systems Limited, a second tier of PracticeWorks Limited, and an indirect wholly-owned subsidiary of the Company.

3. S.D.S. Computer Systems Limited, a United Kingdom limited company, a first tier subsidiary of SDS Computer Holdings Limited, a second tier of PracticeWorks Limited, and an indirect wholly-owned subsidiary of the Company.

4. Trophy Radiologie, a French company, a first tier subsidiary of Trex Medical France, a second tier of PracticeWorks France and an indirect wholly-owned subsidiary of the Company.

The Company has the following indirect wholly-owned fifth tier subsidiaries, all of which are wholly-owned by Trophy Radiologie, a wholly-owned, fourth tier subsidiary of the Company:

1. Trophy Radiologie Italia Srl, an Italian company.

2. Trophy Radiology Japan, Inc., a Japanese company.

3. Trophy Radiologie GmbH, a German company.

4. Trophy Radiologie UK Limited, a United Kingdom limited company.

5. Trophy Dental, Inc., a Virginia corporation.

6. Trophy Benelux SA, a Belgian company.

7. Trophy Radiologia Espana Sl, a Spanish company.