Maxillary sinus floor augmentation with Bio-Oss as a sole graft: a histologic, radiographic and preliminary clinical study
10.3760/cma.j.issn.1002-0098.2013.09.001
- VernacularTitle:上颌窦底提升术中Bio-Oss骨代用品成骨效果的初步观察
- Author:
Yi LIU
1
;
Fei CHEN
;
Yuan FENG
;
Chao XIE
;
Ying-Liang SONG
;
De-Hua LI
Author Information
1. 第四军医大学口腔医学院口腔种植科
- Keywords:
Dental implantation;
Bone substitute;
Maxillary sinus floor augmentation
- From:
Chinese Journal of Stomatology
2013;48(9):513-517
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate new bone formation and preliminary clinical outcomes following maxillary sinus floor augmentation with Bio-Oss alone.Methods Nine patients were treated with ten maxillary sinus floor augmentations using Bio-Oss alone,and eighteen Straunann implants were placed.After five to eleven-month healing period at implant placement,cylindrical specimens were biopsied from the augmented area.The new bone formation of specimens was analyzed by histology and micro-computed tomography.Cone beam computed tomography (CBCT) scans were performed for measurements of residual crestal bone height under the sinus,the amount of increased height immediate after the augmentation and before implant insertion.To monitor stability changes,resonance frequency analysis was performed and implant stability quotient(ISQ) values were collected at implant placements(baseline,0 month),one month,three months and six months after placements.Results All implants were loaded six months after insertion and no failures were recorded.Compared to adjacent native bone,no significant differences of bone volume fraction were found in augmented area (P ＞ 0.05),together with lower trabecular number (P ＜ 0.05) and trabecular thickness(P ＜ 0.01) as well as higher trabecular separation (P ＜ 0.01) by microradiographic analysis.Histomorphometrically,there was no significant difference in the amount of new bone formation between the adjacent native bone and augmented area (P ＞ 0.05).CBCT showed a bone height gain of (14.19 ± 2.02) mm immediate after augmentation,which stabilized at (13.68 ± 1.95) mm after bone healing period.Mean ISQ value was 71.94 ± 6.51 at baseline,decreased to 70.19 ± 6.38 at 1 month,and increased to 78.17 ± 3.83 at 3 month and 82.56 ± 3.20 at 6 month.Conclusions The use of Bio-Oss as the sole graft is reliable and can lead to satisfactory bone formation and clinical outcome.
