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A New Method to Evaluate Volumetric Changes in Sinus Augmentation Procedure
Author(s) -
Dellavia Claudia,
Speroni Stefano,
Pellegrini Gaia,
Gatto Alessandra,
Maiorana Carlo
Publication year - 2014
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12058
Subject(s) - sinus lift , medicine , repeatability , maxillary sinus , volume (thermodynamics) , biomedical engineering , dental implant , dentistry , implant , orthodontics , surgery , mathematics , statistics , physics , quantum mechanics
Background In sinus augmentation procedure, the assessment of volume changes of grafted materials is important both in the clinical practice and in dental research to evaluate the features of filling materials. Purpose In this study, we assessed the repeatability of a new method proposed to evaluate volumetric changes following sinus lift augmentation procedure. Materials and Methods In 10 patients, maxillary sinus augmentation procedure with simultaneous implant placement was performed. Maxillary cone beam computer tomographies were taken 1 week after surgery ( T 1) and 6 months after surgery ( T 2). At each evaluation the gap inside the implant between the fixture and the bottom of the screw was used as reference point ( R p), and a standardized volume of interest ( VOI ) centered on the R p was selected. Masks were chosen to select the graft and bone tissue within the VOI ; the volume at T 1, T 2, and the difference of volume between T 1 and T 2 were computed. Expert and non‐expert operators performed the analysis. Method errors were computed. Results The error of the method was 1% for both intra‐operator and inter‐operator measurements. Tissue contraction at T 2 was 19 ± 4% of the total initial volume. Conclusions The standardization of the method allows to obtain repeatable measurements.