Table 7. Characteristics of the selected studies in periodontology.

S. no	Author, Year, Country	VR system	Participants	Study design	Assessment tool	Tested outcome	Results
Abbreviations: CST, cross sectional trial; DS, dental students; FFB, force feedback; VR, virtual reality.
1	Wang et al 2012, China 75	iDental haptic-based simulator	(19) Dental graduates, (10) faculty members	CST	Virtual tasks of periodontal pocket probing, and calculus detection and removal, followed by user questionnaire	Realism of the simulator relative to clinical situations	Participants reported highly realistic shape of teeth, gingivae, periodontal tools, and oral environment, but poor realistic shape of the calculus and FFB
2	Yamaguchi et al 2013, Japan 76	Haptic-based simulator	(26) 4th year DS	CST	Carries removal and periodontal pocket probing in three training sessions	Carries removal. Periodontal pocket probing skills	The mean scores from the training sessions were significantly higher than the mean pre-training score for both carries removal and periodontal pocket probing skills