Table 3. Summary of oral vestibular approach.

Authors	Technique	Ports & incision	Type	N	Complications
Nakajo et al. (2013)	Oral vestibular (TOVANS)	2.5 cm at center	Human	8	1 RLN injury, 8 mental nerve injury
Wang et al. (2013)	Oral vestibular (ETOVA)	10 mm at center, two 5 mm at lateral	Human	12	2 skin ecchymosis
Yang et al. (2015)	Oral vestibular (ETOVA)	10 mm at center, two 5 mm at lateral	Human	41	2 skin ecchymosis, 1 skin puncture, 1 skin burn, 1 transient RLN injury
Pai et al. (2015)	Oral vestibular	10 mm at center, two 5 mm at lateral	Human	1	–
Anuwong (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	60	2 transient RLN injury, 3 temporary hypoparathyroidism, 1 hematoma,
Udelsman et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	7 (5+2p)	–
Sasanakietkul et al. (2016)	Oral vestibular (TOEPVA)	10 mm at center, two 5 mm at lateral	Human	12p	1 transient RLN injury
Park et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	1	–
Wang et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	10	–
Inabnet et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	1	–
Dionigi et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	1	–
Zeng et al. (2016)	Oral vestibular (TOETVA)	12 mm at center, two 5 mm at lateral	Human	4	–
Jitpratoom et al. (2016)	Oral vestibular (TOETVA)	10 mm at center, two 5 mm at lateral	Human	46	4 transient RLN injury, 10 transient hypocalcemia