Table 2.

Additional research components, that is, performed in addition to the regular appointments at the hospital

Questionnaires	1. Reflux (GerdQ-NL)55
	2. TMD pain (according to the DC/TMD)40 and intensity (graded chronic pain scale)56
	3. Tooth wear
	4. Sleep (obstructive sleep apnoea, STOP-Bang NL)57
Clinical examination	1. Intra-oral examination (positive symptoms of bruxism (viz, clenching marks in the soft tissues of the cheek, tongue or lip, mechanical tooth wear, hypertrophy of the masseter muscle))40
	2. Quantitative tooth wear screening (part of the tooth wear evaluation system)58
	3. A brief screening of the dental prosthesis (when applicable)
	4. Dry mouth screening (clinical oral dryness score)59
	5. Jaw-mobility examination (DC/TMD)40
	6. Joint noises examination (DC/TMD)40
	7. Palpation of masticatory muscles and temporomandibular joints (DC/TMD)40
	8. Dynamic/Static tests60
	9. Bruxoprovocation test60
	10. Saliva test (Saliva-Check Buffer)61
Registration	1. BruxApp37
	2. GrindCare GC435 36

See online supplemental appendix 1 for a description per questionnaire/instrument.

DC, diagnostic criteria; TMD, temporomandibular disorders.