The more coronal level of the gingival margin after

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The more coronal level of the gingival margin after suturing, the greater the probability of complete RC as per a study done by Pini Prato et al . [13] Similarly, in the present study, the membrane was covered completely by the flap and was coronally positioned and sutured. Table 3: Comparison of improvement in the recession depth (mm) and percentage of root coverage in test and control groups Parameters Mean±SD ( n =15) t P Test group Control group Improvement in RD (mm) 1.60±0.507 1.53±0.640 0.32 >0.05 Percentage of RC 58.33±12.196 56.22±10.223 0.51 >0.05 RD – Recession depth; RC – Root coverage; SD – Standard deviation Table 1: Intragroup comparison of clinical parameters between test and control groups at baseline and 9 months Parameters (mm) Time interval Mean±SD ( n =15) Test group Control group RD Baseline 2.73±0.594 2.67±0.816 9 months 1.13±0.516 1.13±0.352 t ( P ) 12.20 (<0.0001*) 9.28 (<0.0001*) PPD Baseline 1.07±0.258 1.13±0.352 9 months 0.13±0.352 0.60±0.507 t ( P ) 7.89 (<0.0001*) 4 (<0.001*) KTH Baseline 3.27±1.223 3.33±1.234 9 months 4±1.363 4±1.134 t (P) 4.01 (<0.001*) 3.57 (<0.005*) CAL Baseline 3.73±0.704 3.67±0.976 9 months 1.13±0.516 1.73±0.704 t ( P ) 15.92 (<0.0001*) 8.47 (<0.0001*) RD – Recession depth; PPD – Probing pocket depth; KTH – Keratinized tissue height; CAL – Clinical attachment level; SD – Standard deviation. *Statistical significance at a P < 0.05 Table 2: Intergroup comparison of clinical parameters between test and control groups at baseline and 9 months Parameters Time interval Mean±SD ( n =15) t P Test group Control group RD Baseline 2.73±0.594 2.67±0.816 0.26 >0.05 9 months 1.13±0.516 1.13±0.352 0 >0.05 PPD Baseline 1.07±0.258 1.13±0.352 0.59 >0.05 9 months 0.13±0.352 0.60±0.507 2.93 <0.01* KTH Baseline 3.27±1.223 3.33±1.234 0.15 >0.05 9 months 4±1.363 4±1.134 0 >0.05 CAL Baseline 3.73±0.704 3.67±0.976 0.21 >0.05 9 months 1.13±0.516 1.73±0.704 2.66 <0.01* RD – Recession depth; PPD – Probing pocket depth; KTH – Keratinized tissue height; CAL – Clinical attachment level; SD – Standard deviation. *Statistical significance at a P < 0.05 [Downloaded free from on Friday, September 15, 2017, IP: 36.79.172.174]
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Kapare, et al .: Resorbable membrane in recession coverage Journal of Indian Society of Periodontology - Volume XX, Issue XX, Month 2017 5 There were reductions in RD and PPD both in the test and the control groups in the present study. Hence, the decrease in PD suggested that the gain in CAL was associated with new connective tissue attachment. In both the groups, the mean KTH showed a significant increase. The KTH gain should be correlated with tissue maturation following healing and the fact that the mucogingival junction tends to be located at its genetically determined position. An increase in KTH may be because of granulation tissue formation from periodontal ligament tissue with the potential to induce keratinization of covering epithelium. [14,15] These findings were in accordance with Praveen et al . (2010) [16] and Cardaropoli et al . [17] CAL showed attachment gains of 1.94 ± 0.27 mm and 2.60 ± 0.19 mm in the control and the test groups, respectively. Clinical improvement in the present test group was probably based on true periodontal regeneration whereas the improvement in control group was probably based on the formation of long junctional epithelium.
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  • Fall '19
  • Collagen, Gingiva, CAF, KTH

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