Graftless Maxillary Sinus Floor Augmentation with Simultaneous Porcine Bone Layer Insertion: A 1- to 5-Year Follow-up Study
| Autor: | Roberto Luongo, Calogero Bugea, Tonino Traini, Nicola Sgaramella |
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| Rok vydání: | 2020 |
| Předmět: |
Dental Implants
Sinus Floor Augmentation Bone Transplantation Augmentation procedure Maxillary sinus business.industry Swine Dental Implantation Endosseous Dentistry General Medicine Maxillary Sinus Implant stability quotient Bone resorption medicine.anatomical_structure medicine Maxilla Animals Humans Cortical bone Implant Oral Surgery business Sinus (anatomy) Follow-Up Studies |
| Zdroj: | The International journal of oralmaxillofacial implants. 35(4) |
| ISSN: | 1942-4434 |
| Popis: | Purpose Evidence suggests that maxillary sinus floor augmentation via a lateral approach can be performed without positioning a bone graft inside, when one or more implants can be placed simultaneously. The aim of this study was to test if the placement of a porcine cortical bone layer underneath the sinus membrane can increase bone formation and implant stability. Materials and methods One hundred seventy-two patients with posterior maxilla atrophy needing implant rehabilitation were selected. Two hundred six sinus augmentation procedures were performed via a lateral approach, and 295 implants were placed in the same session of the sinus elevation surgery. In all the surgeries, a porcine cortical bone layer was placed underneath the sinus membrane, without using any graft material. After 6 to 7 months of healing, the implants were uncovered, then restored with porcelain-fused-to-metal crowns and monitored with a followup of 1 to 5 years. Results The implant cumulative success rate was 95.2%, while the residual bone crest height changed from 2.67 ± 1.11 mm to 12.54 ± 1.42 mm, with an increase of 9.87 mm on average. Marginal bone resorption was 0.83 mm on average after 1 year of loading, while the mean implant stability measured at the moment of implant placement and 6 to 7 months later increased from an implant stability quotient (ISQ) of 62.61 ± 5.7 to an ISQ of 70.07 ± 8.2. Conclusion This study confirms the validity of the graftless sinus elevation surgery when simultaneous implant placement is performed. The use of a porcine cortical bone layer seems to increase, from a radiologic point of view, the amount of bone around the implants, reducing healing time, cost, and biologic complications for the patient. |
| Databáze: | OpenAIRE |
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