Table 1.

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
1. ≥18 years of age	1. Atypical parkinsonian syndromes
2. ≥21 on the Montreal Cognitive Assessment53	2. For using the GrindCare: pacemaker
3. Fulfil clinical diagnostic criteria for PD54	3. For using the BruxApp: no smartphone
	4. For the DAT-SPECT: no deep brain stimulation implant present

When patients have a pacemaker, they cannot use the GrindCare GC4 (ie, a portable, single-channel electromyographic recorder to detect sleep bruxism) and will be excluded from that specific part of the study. When patients do not have a smartphone, participants cannot use the BruxApp (ie, an application on a smartphone to assess awake bruxism) and will be excluded from that specific part of the study.

DAT-SPECT, dopamine transporter single photon emission CT; PD, Parkinson’s disease.