title: Periodontopathogens around the surface of mini-implants removed from orthodontic patients.
abstract: OBJECTIVE
  To verify if mini-implant mobility is affected by the presence of periodontopathogens, frequently associated with peri-implantitis.
  
  
  METHODS
  The surfaces of 31 mini-implants used for skeletal anchorage in orthodontic patients were evaluated. Polymerase chain reaction was used for identification of the presence of DNA from three different periodontopathogens ( P. intermedia [ Pi ], A. actinomycetemcomitans [ Aa ], and P. gingivalis [ Pg ]) in 16 mini-implants without mobility (control group) and 15 mini-implants with mobility (experimental group).
  
  
  RESULTS
  The results showed that Pi was present in 100% of the samples, from both groups: Aa was found in 31.3% of the control group and in 13.3% of the experimental group. Pg was detected in 37.4% of the control group and in 33.3% of the experimental group. The Fisher exact test and the odds ratio (OR) values for Aa and Pg (OR  =  0.34; 95% confidence interval [CI]: 0.05-2.10 and OR  =  0.61; 95% CI: 0.13-2.79, respectively) showed no significant association (P > .05) between the periodontopathogens studied and the mobility of the mini-implants.
  
  
  CONCLUSIONS
  It can be concluded that the presence of Aa , Pi , and Pg around mini-implants is not associated with mobility.
authors: Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil.
authors: André
authors: A
authors: Tortamano
authors: Gladys Cristina
authors: GC
authors: Dominguez
authors: Ana Cristina Soares Santos
authors: AC
authors: Haddad
authors: Fabio Daumas
authors: FD
authors: Nunes
authors: Mônica
authors: M
authors: Nacao
authors: Camillo
authors: C
authors: Morea
mesh_terms: D000293:Adolescent; D000328:Adult; D016976:Aggregatibacter actinomycetemcomitans / Q000302:isolation & purification*; D016022:Case-Control Studies; D015921:Dental Implants / Q000382:microbiology*; D019232:Dental Restoration Failure; D003794:Dental Restoration, Temporary / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D052280:Orthodontic Anchorage Procedures / Q000009:adverse effects*; D057873:Peri-Implantitis / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D017861:Porphyromonas / Q000302:isolation & purification*; D011446:Prospective Studies
chemical_list: D015921:Dental Implants