PMID- 29897351 OWN - Quintessence Publishing Company, Ltd. CI - Copyright Quintessence Publishing Company, Ltd. OCI - Copyright Quintessence Publishing Company, Ltd. TA - Int J Periodontics Restorative Dent JT - International Journal of Periodontics & Restorative Dentistry IS - 1945-3388 (Electronic) IS - 0198-7569 (Print) IP - 2 VI - 39 PST - ppublish DP - 2019 PG - 227-232 LA - en TI - Midfacial Tissue Assessment of the Effect of Amount of Keratinized Mucosa on Immediate Temporarization of Fresh Socket Implants: 8-Year Follow-up LID - 10.11607/prd.3292 [doi] FAU - Crespi, Roberto AU - Crespi R FAU - Capparé, Paolo AU - Capparé P FAU - Crespi, Giovanni AU - Crespi G FAU - Gastaldi, Giorgio AU - Gastaldi G FAU - Romanos, Georgios E. AU - Romanos G FAU - Gherlone, Enrico AU - Gherlone E CN - AB - The aim of the present study was to consider the long-term midfacial mucosal outcome around final prosthetic restorations on dental implants placed and loaded immediately after tooth extractions. A total of 42 patients requiring tooth extractions were recruited, and 142 teeth were extracted. Based on the amount of keratinized mucosa (KM), implants were categorized into group A (KM ≥ 2 mm; n = 61) or group B (KM < 2 mm; n = 62). In both groups, all patients received temporary prosthetic restorations immediately after the surgical procedure. Baseline levels were measured at placement of the final prosthetic restoration and patients were followed for 8 years. After the 8-year follow-up, a survival rate of 98.37% was reported. Two implants were lost due to peri-implantitis after 6 and 7 years of function, respectively. Peri-implantitis occurred at 9 implants (3 from group A and 6 from group B) in 8 patients (7.32%). At the 8-year followup for group A, an increase in midfacial tissue level of 0.14 ± 0.13 mm (screwed restorations) and 0.16 ± 0.09 mm (cemented restorations) was measured. For group B, a decrease in midfacial tissue level of 0.15 ± 0.09 mm (screwed restorations) and 0.17 ± 0.12 mm (cemented restorations) was reported. Statistically significant differences between groups were measured at 2, 5, and 8 years of follow-up (P < .01). The results demonstrated that the presence of KM is significantly associated with less mucosal inflammation and less gingival recession, regardless of the type of prosthetic restoration (screwed vs cemented). AID - 854407