The 69th ORCA Congress will be held in Cagliari, Sardinia, from June 29 to July 2, 2022. Further information about the congress and the venue will be available at From there you can also access the Congress website, which will be available in due course.

Abstracts must be submitted via the ORCA abstract submission system (; see below for guidance).

If participants require a letter of invitation (e.g., to obtain visa or to satisfy their institution’s requirements), the ORCA Board will provide one on request. Please contact the Secretary-General, Assoc. Prof. Dr. Monique van der Veen (E-Mail in good time. The provision of such a letter does not imply that travel expenses will be covered by ORCA.

The abstracts for presentation at the 69th ORCA Congress will be published in an online issue of Caries Research. This issue will be the only abstract book for the Congress, and will be available online, free of charge. The deadline for submitting an abstract is January 9, 2022.

All abstracts will be reviewed by the Scientific Program Committee. Authors will be notified of acceptance or rejection of their abstract by February 28, 2022 and at that time may be asked for revisions. Any such revisions must be submitted by March 6, 2022. Abstracts cannot be withdrawn after that. If an abstract is not withdrawn by that date, and the paper is not presented, the named presenter will not be allowed to present any paper at the following ORCA Congress.

Presenters should note the following:

  • The Congress focuses on research into dental caries and related topics.

  • Abstracts must describe research that has not been published or presented already and has not been submitted to another meeting at the time of submission for the ORCA Congress.

  • Authors may present only one paper at the Congress, but may co-author other papers.

  • The presentation at the Congress must conform to the material in the published abstract. Once submitted, abstracts can be edited within the submission system until January 9, 2022 and during the period for revisions from February 28 to March 6, 2022.

  • Those who submit an abstract are committed to present the paper in person at the Congress. All presentations are conducted as poster sessions and include the presence at the poster at a set time as well as a short oral presentation and discussion in the audience.

  • Posters for the oral presentation must be uploaded in the submission system not later than June 5, 2022. For further details, please see the Congress webpage.

Presenters should:

  • Ensure that they will have the necessary funds to attend the Congress.

  • Apply for any necessary visas in good time, to ensure that they can travel to the Congress to present their paper.

  • Ensure that any abstract describing commercially funded research has been approved by the funding company before submitting it.

  • Write their abstract exactly according to the instructions given below and are urged to seek help from the Master Abstract provided within the submission system.

Presenters will be asked for the following items:

  • Surnames and initials of the presenting author, corresponding author, and other authors.

  • The email address of authors.

  • Brief affiliations of authors (institute, city, country only).

  • Title of abstract. This should be 15 words or less.

  • Text of abstract. This should be 280 words or less and should state: the aim of the work; the experimental approach; the main results; the conclusions. The results mustinclude key numerical and statistical data, but do not attempt to report data exhaustively; SI units should be used. The conclusions should be explicit. Vague expressions such as “the results will be discussed” could result in rejection of the abstract. Include references only when they are essential and follow an abbreviated Caries Research format, but omitting the authors’ initials and the title, and using “et al.” for multiple-author works. Example: [Main et al.: J Oral Rehab 1983;10:307–313]. Tables, photographs, graphs, or diagrams are not allowed. Acknowledge sources of funding.

  • One of the following key phrases, which are required to assist programming: Behaviour; Clinical studies; De- and Remineralization; Diagnosis; Education; Epidemiology; Erosion; Fluoride; Hard tissues; Microbiology; Public Health; Pulp-dentinal Reactions.

The ORCA Nathan Cochrane Junior Scientist Award, inaugurated in 2007 as the Young Investigator Award, is intended to encourage young researchers. The prize winner receives a certificate and is entitled to receive reimbursement of the congress fees of a future ORCA Congress. Applicants for the ORCA Nathan Cochrane Junior Scientist Award must present a poster at an ORCA Congress and have to fulfil the following criteria:

  • have not more than 5 international publications identified in Medline on the day of the deadline for abstract submission for the next ORCA Congress;

  • be aged 35 or under on the last day of the ORCA Congress;

  • be present on the closing ceremony of the ORCA Congress;

  • not be a previous winner of the ORCA Young Investigator’s Award or Junior Scientist Award;

  • must be the first author of the presentation;

  • presentation must not be a review.

Presenters enter the competition by ticking the appropriate box when submitting their abstract via the online submission system.

The deadline for nominations is February 1, 2022.

Nominations are invited for the Yngve Ericsson Prize 2022. This major international prize is awarded every third year by the Swedish Patent Revenue Fund for Research in Preventive Odontology and is named in honor of its founder and major donator, professor Yngve Ericsson, one of the founders of ORCA. The Prize is awarded to persons who have performed outstanding laboratory or clinical research that has contributed specifically to the prevention of dental and oral disease. Candidates are judged on the originality, quality, and range of their scientific contributions as well as the range and clinical importance of the results. Individuals who are still active in research are preferred candidates.

Please send your nomination to the Secretary of the Patent Revenue Fund, Prof. Peter Lingström, Institute of Odontology, Box 450, SE-405 30 Göteborg, Sweden. E-Mail

These Fellowships will be available to assist attendance at an ORCA Congress. Researchers in the field of caries or related subjects will be eligible, and preference will be given to workers from underprivileged countries.

The applicant may not be a previous award winner. Exceptions are made for winners of the 2020 and 2021 Travel Awards, who may apply again.

Each fellowship will have a value of up to EUR 1,200 as a contribution to costs of attending the Congress. The deadline for application is January 9, 2022.

The applicant should prepare an abstract of research results, prepared according to the “Instructions for Authors of Abstracts” (see above).

The application should include:

(1) the abstract of research results;

(2) a curriculum vitae with present position and current research work;

(3) a letter of recommendation from a senior staff member at the home institution.

Please attach CV and letter as a single PDF file in the abstract submission website, with applicant name in the title.