Third mandibular molar coronectomy: a way to prevent iatrogenic inferior alveolar nerve injuries—an systematic review | Journal of Oral Medicine and Oral Surgery

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Table I

Main characteristics of the selected studies.

	Design study	Size series (number of 3MM)	Groups	Nerve damage (%)	Diagnosis risk of nerve damage	Maximum follow-up Average follow-up (standard deviation month)	Level evidence HAS
J. Cervera-Espert 2016 [11]	Meta-analysis	sa	sa	Reduced risk of nerve damage 89%	sa	sa	A
H. Long 2012 [12]	Meta-analysis	sa	sa	Reduced risk of nerve damage 89%	sa	sa	A
Y.Y. Leung 2009 [13]	ECR	349	178 E	5,1 E*	OPT	24	B
			171 C	0.65 C^*		9.9 (7.7)
T. Renton 2005 [14]	ECR	196^**	102 E^**	19 E^*	OPT	29	B
			58 C^**	0 C^*		25(13)
			36 chess	8,3^*
Cilasun 2011 [16]	ECnR	175	87 E	1,7 E	OPT	30	B/C
			88 C	0 C	TDM	17,3 (NR)
Y. Hatano 2009 [6]	ECnR	220	118 E	5 E	OPT	13	B/C
			102 C	1 C	TDM	E:13 (1,31)
						C:13,5 (14,85)
Y.Y. Leung 2016 [17]	Prospective study	612	sa	0.16	OPT	60	C
K. Kohara 2015 [18]	Prospective study	111	sa	1	OPT	36	C
					TDM	NR
G. Monaco 2015 [19]	Prospective study	116	sa	0	OPT	36	C
					TDM	NR
Y.Y. Leung 2012 [20]	Prospective study	135	sa	0	OPT	36	C
						NR
S. Goto 2012 [21]	Prospective study	116	sa	0	OPT	12	C
					TDM	12(0)
A.J. Kouwenberg 2016 [22]	Prospective study	151	sa	0	OPT	6	C
						6(0)
J.O. Agbaje 2015 [23]	Prospective study	96	sa	0	OPT	12	C
					TDM	NR
A. Pogrel 2004 [9]	Prospective study	50	sa	0	OPT	42	C
					TDM	22(NR)
G. Monaco 2012 [24]	Prospective study	43	sa	0	OPT	12	C
					TDM	NR
B. Frenkel 2015 [27]	Retrospective study	185	sa	0.98	OPT	12	D
					TDM	12
B.C. O’Riordan 2004 [26]	Retrospective study	52	sa	7,3	OPT	120	D
						11(NR)
A. Shah 2015 [25]	Retrospective study	150	sa	0	NR	60	sa
						60 (0)
S.P. Aravindaksha 2015 [15]	ECR	120	66 E	2.64 E	TDM	12
			54 C

C: Coronectomy, ECR: Randomized Controlled Trial, ECnR: Controlled Trial, E: Extraction, NR: Not specified, OPT: panoramic X-ray, RdL: Exhaustiv Bibliographic Review, sa: without object, TDM: Tomodensitometry

p < 0.05

^**

In Renton et al. (2005) study, 36 teeth are extracted during the intervention due to mobility [14]

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