Early stability of Straumann implants on osteotome sinus floor elevation without bone grafting

Abstract

Abstract: PURPOSE : To monitor the stability changes of Straumann implants placed by osteotome sinus floor elevation without grafting (OSFE without grafting) using resonance frequency analysis (RFA) during healing period, and analyses the effect of residual bone height on RFA. METHODS : Forty-eight Straumann implants ( 4.8 mm×8 mm) were placed in 48 patients with single tooth lost. Implant stability quotient (ISQ) was tested by RFA on the day of surgery and consecutively at 2, 4, 6, 8 ,12, 16 and 20 weeks after surgery. The data were analyzed using SPSS 17.0 software package. RESULTS : 97.9% survival rate was achieved in 48 implants and all implants had good primary stability at early stage. The mean ISQ value on the day of surgery was high and dropped to the lowest point at 4 weeks after surgery, then increased after 6 weeks in the stability curve. There was no significant correlation between residual bone height and ISQ value. CONCLUSIONS : Implant using OSFE placed at limited bone areas seems to have good implant stability. The RBH is not the main influential factor on implant stability.

Key words: Implant, RFA, Implant stability, ISQ

CLC Number:

R782.12

MO Jia-ji, QIAN Shu-jiao, ZHU Yu, QIAO Shi-chong, GU Ying-xin, LAI Hong-chang. Early stability of Straumann implants on osteotome sinus floor elevation without bone grafting[J]. China Journal of Oral and Maxillofacial Surgery, 2016, 14(1): 19-23.

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