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Table 1 Mean values and standart derivations of study parameters halitosis (quantitative analysis of VSC volume), probing depth, clinical attachment level, plaque index and bleeding on probing on pre-treatment (baseline), 1st month, 3rd month and 6th month follow-up periods

From: The efficacy of Er,Cr:YSGG laser supported periodontal therapy on the reduction of peridodontal disease related oral malodor: a randomized clinical study

Follow-up Time Points Halitosis (ppb) Probing depth (PD)(mm) Clinical atachment Level (CAL)(mm) Plaque index (PI) Bleeding on probing (BOP)(per cent)
Group 1 Group 2 P* Group 1 Group 2 P* Group 1 Study P* Group 1 Group 2 P* Group 1 Group 2 P*
Baseline values, mean (SD) 89.7 (13.9) 88.2 (15.2) 0,58 5.3 (1.8) 5.3 (1.8) 0,91 2.9 (0.4) 2.9 (0.6) 0,65 2.5 (0.5) 2.4 (0.5) 0,37 77.7 (7.4) 75.1 (7.2) 0,12
1 months, mean (SD) 63.8 (7.3) 60.6 (8.8) 0.10 2.7 (0.4) 2.3 (0.8) <0.05 2.0 (0.2) 2.0 (0.5) 0.06 1.9 (0.4) 1.8 (0.4) 0.75 48.5 (7.7) 48.5 (9.4) 0.93
3 months, mean (SD) 69.2 (8.7) 54.4 (8.8) <0.001 2.3 (0.6) 2.2 (0.6) 0.78 1.8 (0.4) 1.8 (0.7) 0.76 1.7 (0.4) 1.6 (0.4) 0.57 47.9(6.6) 40.7 (11.0) <0.05
6 months, mean (SD) 68.8 (10.2) 57.1 (12.2) <0.05 2.1 (0.6) 1.9 (0.7) 0.13 1.9 (0.4) 1.8 (0.5) 0.20 1.5(0.5) 1.5 (0.5) 0.71 41.6 (8.6) 37.8 (7.7) <0.05
P** <0.01 <0.01 - <0.01 <0.01 - <0.01 <0.01 - <0.01 <0.01 - <0.01 <0.01 -
  1. Statistically significant data was shown in the bold emphasis
  2. *p values in the columns represents significance between study and control groups (p < 0.05)
  3. **p value in the rows represents significance between measurements on time periods in study and control groups separately (p < 0.05)