Artículo
Straight and tilted implants for supporting screw-retained full-arch dental prostheses in atrophic maxillae: A 2-year prospective study
Autor/es | Menéndez Collar, Manuel
Serrera Figallo, María de los Ángeles Hita Iglesias, Pilar Castillo-Oyagüe, Raquel Casar Espinosa, Juan Carlos Gutiérrez Corrales, Aída Gutiérrez Pérez, José Luis Torres-Lagares, Daniel |
Departamento | Universidad de Sevilla. Departamento de Estomatología Instituto de Biomedicina de Sevilla (IBIS) |
Fecha de publicación | 2018 |
Fecha de depósito | 2024-07-16 |
Publicado en |
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Resumen | Background: To evaluate, over a 2-year period, the treatment outcomes for maxillary full-arch fixed dental pros theses (FDPs) supported by a combination of both tilted and axially-placed implants and to compare the marginal ... Background: To evaluate, over a 2-year period, the treatment outcomes for maxillary full-arch fixed dental pros theses (FDPs) supported by a combination of both tilted and axially-placed implants and to compare the marginal bone loss (MBL) and implant survival rates (SR) between tilted and axial implants. Material and Methods: A retrospective study has been carried out. Thirty-two patients (16 males and 16 females) treated with maxillary full-arch FDPs were included in this retrospective study. A total of 187 implants were in serted to rehabilitate the fully edentulous maxillary arches: 36% of them were tilted (T group, n = 68) and the re maining 64% were axially placed (A group, n = 119). From the total, 28% of the implants (n=53) were immediately loaded with screw-retained provisional acrylic restorations, whereas 72% underwent conventional delayed pros thetic loading 6 months post-operatively. Definitive restorations were hybrid implant prostheses (metal framework covered with high-density acrylic resin) and metal-ceramic screw-retained implant prostheses, and were placed 6 months after surgery. Such definitive restorations were checked for proper function and aesthetics every three months for two years. Peri-implant marginal bone levels were assessed by digital radiographs immediately after surgery and MBL was assessed at definitive implant loading (baseline) and 2 years afterwards. Results: The 2-year implant SR were 100% for axially placed implants and 98.5% for tilted implants. No signifi cant differences were found amongst the A and T implant groups. Marginal bone loss measured at 2 years after definitive prosthetic loading was of -0.73 ± 0.72 mm (maximum MBL of 1.43 mm) for axially positioned implants vs. –0.51 ± 0.92 mm for tilted implants (maximum bone 1.45 mm). Differences in MBL were statistically signifi cant when comparing immediately and delayed loaded implants. Conclusions: Based on the results of this retrospective clinical study, full-arch fixed prostheses supported by a com bination of both tilted and axially placed implants may be considered a predictable and viable treatment modality for the prosthetic rehabilitation of the completely edentulous maxilla. |
Cita | Menéndez Collar, M., Serrera Figallo, M.d.l.Á., Hita Iglesias, P., Castillo-Oyagüe, R., Casar Espinosa, J.C., Gutiérrez Corrales, A.,...,Torres-Lagares, D. (2018). Straight and tilted implants for supporting screw-retained full-arch dental prostheses in atrophic maxillae: A 2-year prospective study. Medicina oral, patología oral y cirugía bucal, 23 (6), E733-E741. https://doi.org/10.4317/medoral.22459. |
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