Meta-regression analysis of the initial bone height for predicting implant survival rates of two sinus elevation procedures.
OBJECTIVE
To undertake a systematic review for the association between the initial alveolar bone height and the success of dental implants with sinus elevation procedures.


METHODS
An online search was performed using the following electronic databases: PubMed, Medline, Science Direct, and Blackwell synergy. Two investigators independently assessed publications for inclusion and extracted data. Meta-regression analyses were used to test the associations between the initial alveolar bone height and implant survival with lateral window or osteotome sinus elevation procedures.


RESULTS
Of 635 studies, 21 were included for analysis. A quadratic curve-fitting meta-regression showed an increasing trend of implant survival rate with greater initial bone height for the lateral window technique (p<0.0001, adjusted R(2)=0.97). The result of the meta-regression for hazard rates showed a decreasing trend (p=0.0041, adjusted R(2)=0.89). No association was found for the osteotome technique.


CONCLUSIONS
For the lateral window technique, meta-regression analysis suggested a positive association between the initial alveolar bone height and implant survival rates. No relationship was found between the initial alveolar bone height and implant survival rate for the osteotome technique due to a lack of data below 4 mm of initial bone height.
Chao
Yueh-Ling
YL
Department of Dentistry, Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University Hospital, National Taiwan University, Taipei, Taiwan.
Chen
Hsiu-His
HH
Mei
Chih-Chun
CC
Tu
Yu-Kang
YK
Lu
Hsein-Kun
HK
D016301:Alveolar Bone Loss / Q000473:pathology*; D018786:Bone Substitutes; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019232:Dental Restoration Failure; D006801:Humans; D008443:Maxillary Sinus / Q000601:surgery*; D015588:Observer Variation; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D010027:Osteotomy / Q000295:instrumentation; D016016:Proportional Hazards Models; D012044:Regression Analysis; D016896:Treatment Outcome
D018786:Bone Substitutes; D015921:Dental Implants