The effectiveness of vibrational stimulus to accelerate orthodontic tooth movement: a systematic review

BMC Oral Health

Table 4 GRADE assessment for quality of evidence

Patient or population: patients with orthodontic treatment Settings: RCT and CCT Intervention: vibrational stimulus
Outcomes	Illustrative comparative risks (95% CI)		Relative effect(95% CI)	No of Participants(studies)	Quality of the evidence(GRADE)	Comments
Outcomes	Assumed risk	Corresponding risk	Relative effect(95% CI)	No of Participants(studies)	Quality of the evidence(GRADE)	Comments
	Control	Vibrational stimulus
rate of OTM in alignment	See comment	See comment	Not estimable	187(3 studies)	⊕⊝⊝⊝very low^a,b,c	vibrational stimulus did not increase tooth movement in alignment
rate of OTM in canine retraction	See comment	See comment	Not estimable	60(2 studies)	⊕⊝⊝⊝very low^b,d,e	vibrational stimulus increased the rate of canine retraction

^aUnclear risk in random sequence generation, allocation concealment, blinding of participants, incomplete reporting and other bias
^bThe procedure of orthodontic treatment and vibrational stimulus and follow-up durations varied
^cOnly three studies with limited sample size (n = 187) were included
^dHigh risk of bias in randomization, blinding and other bias
^eOnly two studies with limited sample size (n = 60) were included

ISSN: 1472-6831