Table 8.

The different types of DH assessment used in the included studies.

Study	DH assessment method(s)	Subjective assessment
Minkoff and Axelrod [99]	Tactile and thermal	Questionnaire
Nagata et al. [100]	Tactile and air blast	Tarbet's scale and questionnaire [106]
Schiff et al. [101]	Tactile, air blast, and thermodontic stimulator (thermal)	VAS
Schiff et al. [102, 103]	Tactile and air blast	Schiff's sensitivity scale (0–3)
Silverman et al. [104]	Tactile and air blast	VAS
Sowinski et al. [105]	Tactile and air blast	Schiff's sensitivity scale (0–3)