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Maxillary sinus augmentation by crestal access: a retrospective study on cavity size and outcome correlation
Author(s) -
Spinato Sergio,
Bernardello Fabio,
GalindoMoreno Pablo,
Zaffe Davide
Publication year - 2015
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12477
Subject(s) - medicine , maxillary sinus , cone beam computed tomography , sinus (botany) , dentistry , radiography , implant , maxilla , orthodontics , computed tomography , radiology , surgery , botany , biology , genus
Objective Cone‐beam computed tomography ( CBCT ) and radiographic outcomes of crestal sinus elevation, performed using mineralized human bone allograft, were analyzed to correlate results with maxillary sinus size. Material and methods A total of 60 sinus augmentations in 60 patients, with initial bone ≤5 mm, were performed. Digital radiographs were taken at surgical implant placement time up to post‐prosthetic loading follow‐up (12–72 months), when CBCT evaluation was carried out. Marginal bone loss ( MBL ) was radiographically analyzed at 6 months and follow‐up time post‐loading. Sinus size ( BPD ), implant distance from palatal ( PID ) and buccal wall ( BID ), and absence of bone coverage of implant (intra‐sinus bone loss – IBL ) were evaluated and statistically evaluated by ANOVA and linear regression analyses. Results MBL increased as a function of time. MBL at final follow‐up was statistically associated with MBL at 6 months. A statistically significant correlation of IBL with wall distance and of IBL /mm with time was identified with greater values in wide sinuses ( WS ≥ 13.27 mm) than in narrow sinuses ( NS < 13.27 mm). Conclusions This study is the first quantitative and statistically significant confirmation that crestal technique with residual ridge height <5 mm is more appropriate and predictable, in terms of intra‐sinus bone coverage, in narrow than in WS .