Cushioned grind‐out technique transcrestal sinus floor elevation for simultaneous implantation in severe atrophic maxilla: A retrospective study with up to 7 years of follow‐up

Jiayu Gao; Wumeng Yin; Yeyu Liu; Xiangqi Zhao; Vicha Huangphattarakul; Yili Qu; Yi Man

doi:10.1111/clr.14099

May 25, 2023Clinical Oral Implants Research

Cushioned grind‐out technique transcrestal sinus floor elevation for simultaneous implantation in severe atrophic maxilla: A retrospective study with up to 7 years of follow‐up

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Key Points

To evaluate the safety and clinical outcomes of cushioned grind-out transcrestal sinus floor elevation for simultaneous dental implant placement in patients with residual bone height of 4 mm or less.
Retrospective propensity score matching (PSM) study analyzing 214 patients receiving 306 implants followed from 3 months up to 7 years after prosthetic restoration.
Assessed five clinical outcomes—membrane perforation, early and late implant failure, and apical and marginal bone resorption—comparing residual bone height (RBH) ≤4 mm versus >4 mm groups using generalized linear mixed models (GLMM).
The cumulative 7-year implant survival rate was 95.5% in the RBH ≤4 mm group and 93.9% in the RBH >4 mm group (log-rank test p = .900).
GLMM analysis indicated no statistically significant difference between RBH ≤4 mm and >4 mm for Schneiderian membrane perforation (p = .897), early failure (p = .140), or late failure (p = .991).
Multivariate GLMMs showed RBH ≤4 mm was not a promotive factor for endo-sinus bone resorption (time interaction p = .850) or crestal bone loss (time interaction p = .698).

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Implication

Retrospective study reveals high 7-year implant survival with cushioned grind-out sinus elevation in severe maxillary atrophy, indicating safety despite minimal residual bone.

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Cite This Study

Gao et al. (2023) studied this question.

synapsesocial.com/papers/6a9de0abd1e929bd30d9e1bb https://doi.org/10.1111/clr.14099

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Cushioned grind‐out technique transcrestal sinus floor elevation for simultaneous implantation in severe atrophic maxilla: A retrospective study with up to 7 years of follow‐up

Key Points

No abstract yet

Implication

Discussion

Cite This Study

Cushioned grind‐out technique transcrestal sinus floor elevation for simultaneous implantation in severe atrophic maxilla: A retrospective study with up to 7 years of follow‐up

Key Points

No abstract yet

Implication

Discussion

Cite This Study

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