title: Bruxism and Dental Implants: A Meta-Analysis.
abstract: OBJECTIVE
  To test the null hypothesis of no difference in the implant failure rates, postoperative infection, and marginal bone loss after the insertion of dental implants in bruxers compared with the insertion in non-bruxers against the alternative hypothesis of a difference.
  
  
  METHODS
  An electronic search was undertaken in June 2014. Eligibility criteria included clinical studies, either randomized or not.
  
  
  RESULTS
  Ten publications were included with a total of 760 implants inserted in bruxers (49 failures; 6.45%) and 2989 in non-bruxers (109 failures; 3.65%). Due to lack of information, meta-analyses for the outcomes "postoperative infection" and "marginal bone loss" were not possible. A risk ratio of 2.93 was found (95% confidence interval, 1.48-5.81; P = 0.002).
  
  
  CONCLUSIONS
  These results cannot suggest that the insertion of dental implants in bruxers affects the implant failure rates due to a limited number of published studies, all characterized by a low level of specificity, and most of them deal with a limited number of cases without a control group. Therefore, the real effect of bruxing habits on the osseointegration and survival of endosteal dental implants is still not well established.
authors.affiliation: *PhD Student, Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden. †Retired Professor and Former Head, Department of Biomaterials, Göteborg University, Göteborg, Sweden; Guest Professor, Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden. ‡Professor and Head, Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
authors.forename: Bruno Ramos
authors.initials: BR
authors.lastname: Chrcanovic
authors.forename: Tomas
authors.initials: T
authors.lastname: Albrektsson
authors.forename: Ann
authors.initials: A
authors.lastname: Wennerberg
mesh_terms: D002012:Bruxism / Q000150:complications*; D003757:Dental Implantation / Q000009:adverse effects; D015921:Dental Implants / Q000009:adverse effects; D019232:Dental Restoration Failure; D006801:Humans; D013530:Surgical Wound Infection / Q000209:etiology
chemical_list: D015921:Dental Implants