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International Journal of Implant Dentistry
Published in: International Journal of Implant Dentistry 1/2020

Open Access 01-12-2020 | Computed Tomography | Research

Evaluation of maxillary sinus floor augmentation with the crestal approach and beta-tricalcium phosphate: a cone-beam computed tomography 3- to 9-year follow-up

Authors: Yoko Oba, Noriko Tachikawa, Motohiro Munakata, Tsuneji Okada, Shohei Kasugai

Published in: International Journal of Implant Dentistry | Issue 1/2020

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Abstract

Background

We performed maxillary sinus floor augmentation using the crestal approach and beta-tricalcium phosphate (β-TCP) and a long-term evaluation using cone-beam computed tomography (CBCT).

Methods

Twenty-three patients (30 implants) underwent sinus floor augmentation using the osteotome technique. Subjects underwent CBCT imaging before surgery, immediately after surgery, and at follow-up (≥ 3 years after surgery). We measured the changes in height of the augmented sinus floor (SL), the augmented bone above apex of the implant (BH), and the implant length that projected into the sinus (IL).

Results

The mean SL decreased from 6.54 ± 1.51 (immediately after surgery) to 3.11 ± 1.35 mm (follow-up). The mean BH decreased from 3.17 ± 0.97 to − 0.25 ± 1.19 mm; the maxillary sinus floor in many implants was near the apex at follow-up. The SL at follow-up showed a strong correlation with the IL (p = 0.0057).

Conclusions

Osteotome sinus floor elevation with beta-tricalcium phosphate was clinically effective. Cone-beam computed tomography analysis revealed that ≥ 3 years after surgery, the maxillary sinus floor was near the apex of the implant.
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Metadata
Title
Evaluation of maxillary sinus floor augmentation with the crestal approach and beta-tricalcium phosphate: a cone-beam computed tomography 3- to 9-year follow-up
Authors
Yoko Oba
Noriko Tachikawa
Motohiro Munakata
Tsuneji Okada
Shohei Kasugai
Publication date
01-12-2020
Publisher
Springer Berlin Heidelberg
Published in
International Journal of Implant Dentistry / Issue 1/2020
Electronic ISSN: 2198-4034
DOI
https://doi.org/10.1186/s40729-020-00225-7

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