Accuracy and clinical safety of guided root end resection with a trephine: a case series

Head & Face Medicine

Table 2 Results of the measurements

Case	Tooth	AD	ARE	ODE
1	22	NA	−.033	+ 0.29
2	12	4.0	−0.08	+ 1.35
3	11	6.3	−0.70	+ 0.13
4	21	2.1	− 0.76	− 0.15
5	11	NA	− 0.29	+ 0.56
6	11	3.9	−0.06	− 0.06
7	12	5.3	−0.03	+ 1.43
8	22	4.0	+ 0.15	+ 0.57
9	44	NA	−0.41	+ 1.56
10	34	2.4	0.00	−0.53
11	14^a	1.5	−0.93	+ 0.23
11	14^a	1.5	−0.15	+ 0.23
12	11	2.9	+ 0.94	+ 0.23
13	22	5.9	+ 0.23	−0.51
median		3.95	0.19	0.37
95%CI		2.10–5.90	0.03–0.70	0.15–1.35
min-max		2.10–6.30	−0.93-0.94	−0.51-1.56

AD angular deviation (degrees), ARE apex resection error (mm; -: longer than planned; +: shorter than planned), ODE osteotomy depth error (mm; -: deeper than planned; +: shallower than planned). In Case #11, two roots of the same tooth were treated. NA: in these cases, the given parameter could not be measured (see Results). ^aTwo roots of the same tooth were treated. Medians and corresponding confidence intervals were calculated from absolute values to express the degree of error regardless of its direction

ISSN: 1746-160X