Maxillary sinus augmentation using chairside bone marrow aspirate concentrates for implant site development: a systematic review of histomorphometric studies

International Journal of Implant Dentistry

Table 1 OHAT risk of bias assessment

	Study
	de Oliveira et al. [12]	Pasquali et al. [7]	Payer et al. [2]	Sauerbier et al. [11]	Sauerbier et al. [14]	Wildburger et al. [15]
Selection bias
Was administered dose or exposure level adequately randomized?	++	++	++	−−	++	++
Was allocation to study groups adequately concealed?	NR	NR	NR	−−	+	NR
Performance bias
Were the research personnel and human subjects blinded to the study group during the study?	−−	−−	−−	−−	+	−−
Detection bias
Can we be confident in the exposure characterization?	−	−	−	−	−	−
Can we be confident in the outcome assessment?	++	++	++	++	++	++
Attrition bias
Were outcome data complete without attrition or exclusion from analysis?	++	++	+	++	−	−
Reporting bias
Were all measured outcomes reported?	++	++	++	++	−	−

++ definitely low risk of bias, + probably low risk of bias, −/NR probably high risk of bias, −− definitely high risk of bias, NR not reported