Effects of Periodontal Endoscopy-Assisted Nonsurgical Treatment of Periodontitis: Four-Month Results of a Randomized Controlled Split-Mouth Pilot Study
Table 3
Treatment results and part II subgroup analysis at the tooth surface level.
N of sites (%) with HD detected at T0
Median (Q25%; Q75%) PD change T0−T1
Median (Q25%; Q75%) CAL change T0−T1
N of sites (%) with residual PD at T1
N of sites (%) with BOP at T1 (%)
Categorized initial PD
nPE
PD ≤ 3 mm
7 (1.4)
0 (0, 0)
1.0 (0, 1.0)
1 (0.2)
38 (7.8)
PD = 4–6 mm
67 (8.6)
−1.0 (−2.0, −1.0)
−1.0 (−2.0, 0)
77 (9.8)
107 (13.7)
PD ≥ 7 mm
12 (10.6)
−4.0 (−4.0, −3.0)
−2.0 (−3.0, −1.0)
34 (30.1)
18 (15.9)
PE
PD ≤ 3 mm
39 (8.0)
0 (0, 0)
0 (0, 1.0)
6 (1.2)
34 (7.0)
PD = 4–6 mm
132 (16.8)
−1.0 (−2.0, −1.0)
−0.5 (−1.0, 1.0)
96 (12.2)
132 (16.8)
PD ≥ 7 mm
20 (22.2)
−3.0 (−4.0, −2.0)
−1.0 (−3.0, 0)
35 (38.9)
24 (26.7)
Jaw
nPE
Upper jaw
40 (6.2)
−1.0 (−2.0, 0)
−1.0 (−1.0, 0)
51 (7.9)
88 (13.6)
Lower jaw
46 (6.2)
−1.0 (−2.0, 0)
−1.0 (−1.0, 0)
61 (8.3)
75 (10.2)
PE
Upper jaw
99 (15.9)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
80 (12.8)
98 (15.7)
Lower jaw
92 (12.5)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
57 (7.7)
92 (12.5)
Tooth type
nPE
Anterior teeth
30 (4.6)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
27 (4.1)
62 (9.4)
Premolars
25 (6.4)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
22 (5.6)
46 (11.8)
molars
31 (9.2)
−1.0 (−2.0, 0)
−1.0 (−1.7, 0)
63 (18.8)
55 (16.4)
PE
Anterior teeth
76 (11.4)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
29 (4.4)
69 (10.4)
Premolars
45 (11.9)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
33 (8.7)
54 (14.3)
molars
70 (22.0)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
75 (23.6)
67 (21.1)
Tooth surface
nPE
Mesial
33 (7.2)
−1.0 (−2.0, 0)
−1.0 (−2.0, 0)
42 (9.1)
60 (13.0)
Middle
17 (3.7)
0 (−1.0, 0)
0 (−1.0, 1.0)
19 (4.1)
36 (7.8)
Distal
36 (7.8)
−1.0 (−2.0, 0)
0 (−1.0, 0)
51 (11.0)
67 (14.5)
PE
Mesial
66 (14.5)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
63 (13.9)
82 (18.1)
Middle
59 (13.0)
−1.0 (−1.0, 0)
0 (−1.0, 1.0)
24 (5.3)
45 (9.9)
Distal
66 (14.5)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
50 (11.0)
63 (13.9)
Treatment order groups
nPE
Early-treatment group
23 (5.0)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
65 (14.1)
73 (15.8)
Middle-treatment group
36 (6.8)
−1.0 (−2.0, 0)
−1.0 (−2.0, 0)
21 (4.0)
57 (10.8)
Late-treatment group
27 (6.8)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
26 (6.6)
33 (8.3)
PE
Early-treatment group
73 (15.8)
−1.0 (−2.0, 0)
0 (−1.0, 1.0)
70 (15.2)
73 (15.8)
Middle-treatment group
50 (10.4)
−1.0 (−2.0, 0)
−1.0 (−2.0, 0)
26 (5.4)
68 (14.2)
Late-treatment group
68 (16.2)
−1.0 (−1.0, 0)
0 (−1.0, 1.0)
41 (9.8)
49 (11.7)
Mann–Whitney test between PE versus nPE groups (significant differences in bold): ; ; (Bonferroni adjustment). Descriptive statistics and results for comparison between both groups of treatment for N of sites with HD (% of all teeth), median (Q25%, 75%) change in PD between T0-T1 (in mm), median (Q25%, 75%) change in CAL between T0-T1 (in mm), N of sites with residual pockets at T1 (PD ≥ 5 mm), and N of sites with BOP at T1 (% all tooth surfaces) of all survived teeth separated by groups of PD (categorized in ≤3 mm, 4–6 mm and >7 mm) at T0, jaw location (upper vs. lower jaw) and tooth type (anterior teeth, premolars, and molars), tooth surface (mesial, middle, and distal), and treatment order (early, middle, and late). All significant differences with better results in PE/nPE are highlighted in bold. Standard deviation (SD); frequency (n); percentage (%); clinical attachment level (CAL); hard deposit (HD); nonsurgical periodontal therapy (NSPT); lower/upper quartile (Q25%, Q75%); test teeth without periodontal endoscopy treatment (nPE); test teeth with periodontal endoscopy treatment (PE); pocket probing depth (PD); baseline (T0); reevaluation visit after the end of NSPT (T1).
