A multidisciplinary collaboration was established between research teams working in various fields, namely rheumatology (RS), gastroenterology (MF), oral surgery, oral implantology, and periodontology (AB, KA, LR, MG), to conduct a national cross-sectional survey among members of dental scientific societies concerning the dental management of patients with IMIDs, in particular, those with IRDs, IBDs, or vasculitis, receiving bDMARDS, DMARDs, and/or ISs. The dentists (KA, LR, MG) involved in this study all have an academic position and a hospital practice.
Study population
In France, all dentists with an academic position are members of the National College of Academic Teachers (College National d’Enseignants - CNE) in periodontology (CNEP), oral surgery (CNECO), pediatric dentistry (CNEOP), or restorative dentistry and endodontics (CNEOC). Moreover, many French specialized and general dentists with a special interest in a certain field of dentistry are members of the French Society of Oral Surgery (SFCO), the French Society of Periodontology and Oral Implantology (SFPIO), the French Society of Pediatric Dentistry (SFOP), and/or the French Society of Endodontics (SFE). In this study, all dentists reporting an activity limited to a field of specialization (oral surgery, periodontology, oral implantology, others) were considered to be "specialized dentists". Thus, the distinction was not made based on the level of the degree declared.
As patients with IRDs and IBDs may be followed by non-specialized or specialized dentists in office-based or hospital-based dental services, we invited the participation of the members of these scientific societies and National Colleges of Academic Teachers in dentistry by email, which allowed us to reach a large panel of dentists. Therefore, members of the SFCO, SFPIO, SFE, SFOP, CNEP, CNECO, CNEOP, and CNEOC were invited to participate in the online survey via mailing lists.
Insofar as the scientific societies have members based in Europe or Africa, and as we wished to evaluate professional practices with reference to French recommendations (SFCO, CRI, and ANSM), the study was limited to members practicing in France. As many dentists are members of both colleges of academic teachers and scientific societies, we could not estimate the number of dentists approached for the survey.
Data collection
A semi-structured questionnaire containing 53 questions was developed by the authors (KA, RS, MF, LR, and MG) for this survey. The questionnaire was divided into five sections, of which the main points were: 1 - the practitioner’s profile (gender, time since graduation, type of practice facility, and type of practice [generalist or specialist, with a choice of field of specialization]), type of degree, and experience with patients with IRD or IBD (number of patients treated per month by type of disease [i.e., IBDs, joint diseases, or vasculitis], reason for the first visit, and patient’s background treatment); 2 - participant's knowledge/training concerning the dental care of patients on biologics (yes/no, source of information; expected risks after dental invasive procedures); 3 - management of oral care of patients on biologics (nature of invasive procedures performed, management of the medical treatment, biological tests prescribed preoperatively, protocol for the use of antiseptics and antibiotics, declaration of postoperative complications occurring after invasive dental care procedures, and the nature of complications); 4 - same as 2 but on conventional DMARDs and ISs; 5 - same as 3 but on conventional DMARDs and ISs.
The biologics listed were the following (the main trade names were provided): anti-TNFα, anti-IL-1β, anti-IL-6, anti-IL-12/23, anti-lymphocyte B, anti-lymphocyte T, anti-IL-17, anti-integrin, and the targeted synthetic DMARD anti-JAK. The ISs listed, with examples of trade names, were the following: azathioprine, methotrexate, and cyclophosphamide. Corticoids were also listed. Participants were given the possibility to fill in "other molecules" in a free field.
The questionnaire was tested by nine generalized or specialized dentists with a community-based private or hospital practice. Their feedback on the comprehension of the questions and the ease of answering them helped us to improve and finalize the questionnaire. The questionnaire was distributed on a secure platform provided by the University of Paris (Lime Survey®), allowing online completion, storage of the answers, and data extraction. Participants were invited to complete the questionnaire by email in September 2020, with four reminders up to December 31, 2020. The email included a synopsis of the survey and the link to the online questionnaire.
Ethical approval for the study was granted by the APHP Centre Research Ethics Committee on June 15, 2020, and is registered under IRB registration number: #00011928.
Statistical analysis
Qualitative variables are presented as numbers and percentages and quantitative variables as numbers, means, and standard deviations.
We compared general dentists versus specialists with respect to their experience in managing patients with IRD or IBD (type of disease, number of patients, type of biologic/IS treatment), knowledge/training concerning dental care of patients with IRD or IBD, type of invasive procedure performed, management of medical treatment, perioperative oral-care protocols, and frequency of postoperative complications after invasive dental care procedures. Categorical variables were compared using Chi-squared or Fisher tests, as appropriate. Continuous endpoints were compared using Student’s t test.
Statistical analyses were performed using STATA software (Stata Statistical Software: Release 15. College Station, TX: StataCorp LLC). All tests were two-sided and a p value < 0.05 was the threshold for statistical significance.