Histomorphometric evaluation of different graft associations for maxillary sinus elevation in wide antral cavities: a randomized controlled clinical trial.

Autor: Harlos MM; Division of Implantology, Faculdade São Leopoldo Mandic (SLMandic), R. Dr. José Rocha Junqueira, 13, Campinas, São Paulo, Brazil., da Silva TB; Division of Implantology, Faculdade São Leopoldo Mandic (SLMandic), R. Dr. José Rocha Junqueira, 13, Campinas, São Paulo, Brazil., Montagner PG; Division of Implantology, Faculdade São Leopoldo Mandic (SLMandic), R. Dr. José Rocha Junqueira, 13, Campinas, São Paulo, Brazil., Teixeira LN; Division of Cell Biology, Faculdade São Leopoldo Mandic (SLMandic), Campinas, São Paulo, Brazil., Gomes AV; Division of Implantology, Faculdade São Leopoldo Mandic (SLMandic), R. Dr. José Rocha Junqueira, 13, Campinas, São Paulo, Brazil., Martinez EF; Division of Cell Biology, Faculdade São Leopoldo Mandic (SLMandic), Campinas, São Paulo, Brazil. elizabeth.martinez@slmandic.edu.br.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2022 Aug; Vol. 26 (8), pp. 1-9. Date of Electronic Publication: 2022 May 05.
DOI: 10.1007/s00784-022-04515-9
Abstrakt: Objectives: Pneumatization of the maxillary sinus can make it difficult, if not impossible, to install osseointegrated implants, and undertake their eventual functional rehabilitation, which may ultimately require regenerative techniques to achieve. This randomized controlled study proposed conducting a histological evaluation of the behavior of different graft materials in wide maxillary sinuses, at a height of 8 to 10 mm from the alveolar ridge, combined with bone remnants less than 3mm.
Materials and Methods: Thirty-six patients underwent a sinus elevation procedure through the lateral window. The sinuses were randomly filled with the following materials (n=12/group): group 1, xenogenic bone + autogenous bone (ratio 70:30, respectively); group 2, xenogenic bone + L-PRF; and group 3, xenogenic bone. At 8 months, bone biopsies of engrafted sites were harvested and analyzed histomorphometrically in order to quantify newly formed bone tissue.
Results: The results showed a greater area of newly formed bone for G1, averaging 2678.37 (1116.40) μm 2 , compared with G2 at 984.87 (784.27) μm 2 , and G3 at 480.66 (384.76) μm 2 (p < 0.05). Additionally, fewer xenogenic bone particles and a large amount of connective tissue were observed in G2.
Conclusions: In maxillary sinuses with large antral cavities, autogenous bone combined with xenogenic bone seems to demonstrate better graft remodeling and improve bone formation, compared with the addition of L-PRF.
Clinical Relevance: L-PRF produces few advantages regarding new bone formation in the wide maxillary sinuses.
Trial Registration: Brazilian Clinical Trials Registry (REBEC) number RBR-2pbbrvg.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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