Abstract
Background. In the current scientific literature there are only few studies on the immediate functional loading of single implants. The aim of the present present study was to evaluate the 4-year survival rate, complication rate and peri-implant marginal bone loss (PIMBL) of immediately loaded single implants inserted in healed ridges and fresh post-extraction sites. Methods. Six centers were involved in this prospective study. The surgical and prosthetic protocol was defined in detail, before the start of recruiting patients. Recruitment of patients and performance of surgeries took place between February 2012 and February 2013. Criteria for inclusion were single-tooth gaps in healed ridges and fresh post-extraction sockets. All the fixtures (Anyridge®, Megagen Corporation, Gyeongbuk, South Korea) were functionally loaded immediately after insertion and followed for a period of 4 years. Outcome measures were implant survival, complications and PIMBL. Results. Forty-six patients (18‒73 years of age) were selected. In total, 57 fixtures were placed (10 in fresh post-extraction sockets). After 4 years of functional loading, only one fixture was lost; therefore, high survival rates (97.6% patient-based; 98.1% implant-based) were reported. In addition, a limited incidence of biologic (4.8% patient-based; 3.8% implant-based) and prosthetic (9.7% patient-based; 7.6% implant-based) complications was reported. The overall 4-year PIMBL amounted to 0.38±0.21 mm (healed ridges: 0.4±0.21 mm; fresh post-extraction sockets: 0.33±0.20 mm). Conclusion. Loading single implants immediately seems to be a highly successful treatment modality. However, long-term data are needed to confirm these positive outcomes.
Highlights
The aim of the present present study was to evaluate the 4-year survival rate, complication rate and peri-implant marginal bone loss (PIMBL) of immediately loaded single implants inserted in healed ridges and fresh post-extraction sites
In order to meet the needs and demands of patients, it is no longer sufficient that a properly osseointegrated implant remain functional for many years; it is important that the aesthetic integration of the implantsupported prosthetic restoration be fully satisfactory.[6,7]
The PIMBL after 4 years of loading amounted to 0.38 mm (±0.21 mm; median: 0.4 mm; 95% confidence intervals (CI): 0.32‒0.44 mm)
Summary
Dental implants today represent a reliable and successful solution for the rehabilitation of singleJODDD, Vol 12, No 1 Winter 2018 tooth gaps, as unequivocally demonstrated by literature in the short,[1] medium[2] and long term.[3]The success of prosthetic implant therapy depends essentially on the biological, functional and aesthetic integration of implants and implant-supported prosthetic restorations in the oral cavity.[4,5] Today, in order to meet the needs and demands of patients, it is no longer sufficient that a properly osseointegrated implant remain functional for many years; it is important that the aesthetic integration of the implantsupported prosthetic restoration be fully satisfactory.[6,7]patients are increasingly more demanding and the demand for a satisfactory aesthetic result with a fully biomimetic rehabilitation in the oral cavity is today accompanied by the desire to reduce treatment times and replace a missing or irreparably compromised natural tooth with a definitive implant-supported restoration as early as possible.[6,8]In this context, solutions such as immediate implant placement in post-extraction sockets,[6,8,9] where there is a compromised dental element that requires replacement, and immediate loading[10,11,12] are increasingly successful, required by patients and provided by dentists.Immediate placement of an implant involves inserting a fixture into a post-extractive alveolus, immediately after extracting a tooth which is no longer recoverable because it is compromised.[6,8,9,11] Patients like this solution because it reduces surgical sessions and psychological stress; it is a classic ‘two-for-one’ deal, ensuring minimal invasiveness and a significant reduction in implant treatment times. 6,8,9,11. Patients are increasingly more demanding and the demand for a satisfactory aesthetic result with a fully biomimetic rehabilitation in the oral cavity is today accompanied by the desire to reduce treatment times and replace a missing or irreparably compromised natural tooth with a definitive implant-supported restoration as early as possible.[6,8] In this context, solutions such as immediate implant placement in post-extraction sockets,[6,8,9] where there is a compromised dental element that requires replacement, and immediate loading[10,11,12] are increasingly successful, required by patients and provided by dentists. The aim of the present present study was to evaluate the 4-year survival rate, complication rate and peri-implant marginal bone loss (PIMBL) of immediately loaded single implants inserted in healed ridges and fresh post-extraction sites
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