Abstract
Objective:This clinical study was conducted to evaluate the effect of immediate loading on peri-implant soft tissue health using three protocols: i) Immediate functional loading using polymer infiltrated ceramic (PIC) material (IFLV). ii)Immediate functional loading using polymethyl methacrylate (PMMA) followed by delayed functional loading using PIC material (IFLP). iii) Immediate non-functional loading using PMMA followed by delayed functional loading using PIC material (INFLP). Material & Methods: 30 Implants were placed in the upper premolar area and divided randomly according to the immediate loading protocol. In the control group (INFLP), CAD/CAM PMMA crowns were placed out of occlusion for 3 months, and then replaced by CAD/CAM VITA ENAMIC crowns in functional occlusion. For (IFLV) group, CAD/CAM VITA ENAMIC crowns were immediately loaded in functional occlusion; while in (IFLP) group, CAD/CAM PMMA crowns were placed in functional occlusion for 3 months, and then replaced by CAD/CAM VITA ENAMIC crowns. Modified pink esthetic score (MPES) and probing depth were used for evaluation of peri-implant soft tissue at base line and follow up periods. Results: INFLP showed higher MPES results compared to IFLV and IFLP. Moreover, the INFLP probing depth at 3 months showed higher results compared to the other groups. Conclusions: Immediate non-functional loading showed the best outcomes. However, peri-implant soft tissue health of the immediate functional loading using the PIC crown material was clinically acceptable.Key WordsPolymer infiltrated ceramics, immediate dental implant loading, peri-implant soft tissue health.
Highlights
Implants are the first treatment option to restore missing teeth
Modified pink esthetic score (MPES) The results of INFLP group showed higher results compared to other groups at follow up periods 3,6 and 12 months
For IFLV group, there was no significant difference between baseline and 3 months; and no significant difference between 6 months and 12 months
Summary
Implants are the first treatment option to restore missing teeth. Their surfaces have been improved to enhance the Osseo-integration process [1]. Esthetic challenges may be related to the effect of occlusal forces on the implant, causing bone loss and soft tissue changes. It was suggested that loading protocols might be shortened through 2 different approaches. The first approach was the early loading of dental implant, where the implant is placed in function within 48 hours up to 3 months of implant placement. The second was the immediate loading protocols that can keep the amount of micromotion beneath the threshold of deleterious micromotion. It was found that successful premature loading protocols require a careful and strict patient selection aimed to achieve the best primary stability [3]
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