title: Meta-Analysis of Correlations Between Marginal Bone Resorption and High Insertion Torque of Dental Implants.
abstract: OBJECTIVE
  To evaluate correlations between marginal bone resorption and high insertion torque value (> 50 Ncm) of dental implants and to assess the significance of immediate and early/conventional loading of implants under a certain range torque value.
  
  
  METHODS
  Specific inclusion and exclusion criteria were used to retrieve eligible articles from Ovid, PubMed, and EBSCO up to December 2013. Screening of eligible studies, quality assessment, and data extraction were conducted in duplicate. The results were expressed as random/fixed-effects models using weighted mean differences for continuous outcomes with 95% confidence intervals.
  
  
  RESULTS
  Initially, 154 articles were selected (11 from Ovid, 112 from PubMed, and 31 from EBSCO). After exclusion of duplicate articles and articles that did not meet the inclusion criteria, six clinical studies were selected. Assessment of P values revealed that correlations between marginal bone resorption and high insertion torque were not statistically significant and that there was no difference between immediately versus early/conventionally loaded implants under a certain range of torque.
  
  
  CONCLUSIONS
  None of the meta-analyses revealed any statistically significant differences between high insertion torque and conventional insertion torque in terms of effects on marginal bone resorption.
authors.forename: Haoyan
authors.initials: H
authors.lastname: Li
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Liang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zheng
mesh_terms: D001862:Bone Resorption / Q000209:etiology* / Q000601:surgery; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D015921:Dental Implants; D006801:Humans; D057893:Immediate Dental Implant Loading; D019415:Torque
chemical_list: D015921:Dental Implants