Graft-Free Maxillary Sinus Floor Elevation: A Systematic Review and Meta-Analysis.
This systematic review and meta-analysis aims to investigate survival rates of dental implants placed simultaneously with graft-free maxillary sinus floor elevation (GFSFE). Factors influencing amount of vertical bone gain (VBG), protruded implant length (PIL) in sinus at follow-up (PILf), and peri-implant marginal bone loss (MBL) are also evaluated.



Electronic and manual searches for human clinical studies on simultaneous implant placement and GFSFE using the lateral window or transcrestal approach, published in the English language from January 1976 to March 2016, were conducted. The random-effects model and mixed-effect meta-regression were used to analyze weighted mean values of clinical parameters and evaluate factors that influenced amount of VBG.



Of 740 studies, 22 clinical studies were included in this systematic review. A total of 864 implants were placed simultaneously with GFSFE at edentulous sites having mean residual bone height of 5.7 ± 1.7 mm. Mean implant survival rate (ISR) was 97.9% ± 0.02% (range: 93.5% to 100%). Weighted mean MBL was 0.91 ± 0.11 mm, and it was significantly associated with the postoperative follow-up period (r = 0.02; R2= 43.75%). Weighted mean VBG was 3.8 ± 0.34 mm, and this parameter was affected significantly by surgical approach, implant length, and PIL immediately after surgery (PILi) (r = 2.82, 0.57, 0.80; R2= 19.10%, 39.27%, 83.92%, respectively). Weighted mean PILf was 1.26 ± 0.33 mm (range: 0.3 to 2.1 mm).



Within limitations of the present systematic review, GFSFE with simultaneous implant placement can achieve satisfactory mean ISR of 97.9% ± 0.02%.
Department of General Dentistry, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China.
Deng-Hui
DH
Duan
Discipline of Periodontics, Faculty of Dentistry, National University of Singapore, Singapore, Republic of Singapore.
Jia-Hui
JH
Fu
Department of Endodontics, Jinan Stomatology Hospital, Jinan, Shandong, People's Republic of China.
Wei
W
Qi
Department of General Dentistry, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China.
Yi
Y
Du
Department of General Dentistry, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China.
Jie
J
Pan
Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI.
Hom-Lay
HL
Wang
D006801:Humans; D016301:Alveolar Bone Loss; D016208:Databases, Factual; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019232:Dental Restoration Failure; D008437:Maxilla / Q000601:surgery; D008443:Maxillary Sinus / Q000033:anatomy & histology / Q000601:surgery; D008824:Michigan; D059546:Sinus Floor Augmentation
D015921:Dental Implants
Alveolar bone loss; bone regeneration; bone substitutes; dental implants; sinus floor augmentation; systematic review