Intraoperative Blood Loss and Postoperative Pain in the Sagittal Split Ramus Osteotomy and Intraoral Vertical Ramus Osteotomy: A Literature Review

Table 1

Demographic and study characteristics in the operation time and blood loss of the included studies.

Author	Technique	Subgroups	Age	Sex	Operation time	Blood loss	Operation time & blood loss correlation
Year		Samples	Mean (years)	F (female)	Mean (minute)	Mean (mL)
Country of origin			Range (years)	M (male)	Range (minute)	Range (mL)
Kuroyanagi et al.	SSRO		28	F: 32	105	55	Significant
2013			17-44	M: 18	80-200	15-300
Japan
Shirota et al.	SSRO	Piezoelectricity (); Traditional SSRO ()		F: 35			Significant
2014			16-49	M: 24	107-255	18-584
Japan
Chen et al.	IVRO		F:	F: 49	F:	F:	F: no significant
2015			M:	M: 31	M:	M:	M: significant
Taiwan
Handa et al.	SSRO	Propofol-fentanyl (); Propofol-remifentanil ()		F: 45			NA
2016				M: 20
Japan				F: 47			NA
				M: 19
Salma et al.	SSRO						NA
2017					120-300	100-300
Saudi Arabia
Pedersen et al.	IVRO		23.5	F: 71	61	82	No significant
2021			18-73	M: 62	31-144
Norway

: number of samples; NA: not available.