Table 1.

Scheduling of events

	Screening	Baseline (initial treatment visit)	At time of intervention/dental visits	Annual Questionnaire	36 months	Other
Assessment for eligibility	o
Informed consent		o
Socio-demographic characteristics and eligibility for free treatment		o
Clinical status (DMFT)		o
Sustained tooth vitality			o		o	o
Pulp exposure during caries removal			o
Caries progression dental pain relief			o		o	o
EQ-5D-5L		●		●	●
OHIP-14		●		●	●
Patient satisfaction				•	●
Oral health behaviours		●			●
NHS perspective primary dental care resource use and cost			o			∇
NHS perspective use of other NHS services (GP, A&E etc.)			o	●	●
Patient perspective unit costs of time and travelA				●
Patient perspective costs (private care, NHS co-charges etc.)				●	●	∇
General population preferences						⊕
Willingness to pay						⊕

^ACosts of time and travel will be collected from a randomly selected subset of participants, across the different annual questionnaire time-points. Each selected participant will complete the questions once only

o: Dental Practice-CRF

●: Questionnaire

∇: Data linkage to routine administrative datasets, ongoing over trial duration, at the end of the study, and for longer term follow-up

 ⊕ DCE, administered once online to a nationally representative sample of the UK general population