Staged Sinus Floor Elevation Using Novel Low-Crystalline Carbonate Apatite Granules: Prospective Results after 3-Year Functional Loading.

Yoichiro Ogino,Yasunori Ayukawa,Noriko Tachikawa,Masahiro Shimogishi,Kunio Ishikawa,Kiyoshi Koyano,Keiko Kudoh,Youji Miyamoto,Naoyuki Fukuda

doi:10.3390/ma14195760

Yoichiro Ogino, Yasunori Ayukawa + Show 7 more

Open Access

https://doi.org/10.3390/ma14195760

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Abstract

The aim of this study was to evaluate clinical outcomes of staged sinus floor elevation (SFE) using novel low-crystalline carbonate apatite (CO3Ap) granules. Patients who needed SFE for implant placement were recruited into this clinical trial. A staged procedure (lateral window technique using CO3Ap granules, followed by implant placement after 7 ± 2 months) was employed in 13 patients. Bone-height increase and insertion torque values (ITVs) were assessed along with histological evaluation. The survival and success rates of 3-year functioning implants were also evaluated. Mean of bone-height increase after SFE using CO3Ap granules was 7.2 ± 2.5 mm and this increase allowed implant placement in all cases (17 implants). Mean of ITV was 25.1 ± 13.2 Ncm and primary stability was achieved successfully in all cases. Histological analyses revealed mature new bone formation (36.8 ± 17.3%) and residual CO3Ap granules (16.2 ± 10.1%) in the compartment after SFE. The survival and success rates after 3-year functional loading were 100% and no complications were found. These results clearly indicate the clinical usefulness of CO3Ap granules for SFE.

Highlights

Sinus floor elevation (SFE) has been reported to be a predictable treatment modality for implant placement in atrophic maxilla [1,2]
One patient who had staged SFE was excluded from the analysis because the complex of carbonate apatite (CO3 Ap) granules and autogenous bone was used as graft materials for SFE
The was recommended the cases residual height lateral window technique using a graft material would be useful to maintain the space the lateral window technique using a graft material would be useful to maintain the between the sinus and floor, a previous reportreport suggested the effecspace between the membrane sinus membrane and floor, a previous suggested the tiveness of without any graft materials in space maintenance

Summary

Introduction

Sinus floor elevation (SFE) has been reported to be a predictable treatment modality for implant placement in atrophic maxilla [1,2]. The SFE procedure includes two main techniques: the transcrestal (or transalveolar) technique and the lateral window technique [3]. The lateral window technique requires more invasive intervention and more skilled techniques [3,4,5,6]. This technique can be performed under direct vision and can increase more vertical space compared to the transcrestal technique [3,4]. The proper selection of surgical techniques is required depending on the anatomical situation, especially the residual bone height (threshold height: 4–6 mm) [4,5,6], both techniques were clinically reliable and predictable [7,8,9]

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