Assessment of inflammatory status of peri-implant soft tissue around functionally loaded immediate implants placed in periodontally compromised tooth extraction sockets

Abstract

The present study was aimed at assessment of the soft tissue condition around immediate implants used to replace periodontally compromised mandibular anterior teeth.A longitudinal study was conducted on 17 functionally loaded immediate implants placed in periodontally compromised sockets at mandibular anterior region. Clinical and biochemical assessment of inflammatory status of peri-implant mucosa were recorded at 2 week, 6and 12-month intervals after loading. Clinical parameters included modified Plaque Index (mPI), modified Bleeding Index (mBI), marginal soft tissue level (ML), Papilla Index (PI) and width of attached mucosa (AM). Biochemical parameter was the levels of Aspartate aminotransferase (AST) enzyme in peri-implant crevicular fluid (PCF).Inter-comparison of observations were statistically analysed using repeated-measures ANOVA. The mean mPI score was 0.71, 0.41 and 0.53 at three intervals (p=0.354) indicating moderate score. The mean mBI was1.06, 0.35 and 0.29 at various intervals (p=0.000), pointing reduced bleeding tendency. Throughout the study, 70.588% of sites had positive ML, suggesting soft tissue stability. Mean PI scores were 1.71, 2.06 and 2.65 and for AM were 2.41, 2.41 and 2.94 respectively at the three intervals, with a statistically significant p-value of 0.000 for both. The mean AST level in PCF was 1876.47 μIU, 1729.41 μIU and 2117.65 μIU (p=0.431), pointing no increase in inflammation.Considering the results obtained, implants under study exhibited no major inflammatory changes in the soft tissue, during the study period.