title: Sensitivity and Specificity of Stability Criteria for Immediately Loaded Splinted Maxillary Implants.
abstract: BACKGROUND
  To assess the suitability of dental implants for immediate loading, primary stability is usually evaluated intraoperatively.
  
  
  OBJECTIVE
  This retrospective study aimed to assess the suitability of three stability parameters - namely, insertion torque (IT), implant stability quotient (ISQ; measured by resonance frequency analysis), and Periotest (PT) values - as potential predictors for the risk of nonosseointegration of immediately loaded splinted implants. The stability parameters were routinely collected under immediate loading.
  
  
  METHODS
  Nineteen patients with 11 edentulous and 8 partially edentulous maxillae were treated with 105 dental implants, which were immediately loaded using temporary fixed dentures. The IT results, PT values, and ISQ results were recorded. Receiver operating characteristic analysis was performed to assess the quality of each parameter as a diagnostic test.
  
  
  RESULTS
  After a 3-month observation period, 11 implants in four patients were not osseointegrated. The IT and ISQ (IT 25.0 ± 12.5 Ncm and 8.4 ± 2.3 Ncm; PT -1.5 ± 3.0 and +2.7 ± 3.0; and ISQ 62.6 ± 6.7 and 54.7 ± 6.2) differed significantly between the osseointegrated and failed implants (p < .005). The IT showed the greatest specificity at a sensitivity of 1 and the greatest area under the curve (AUC; 0.929), followed by the PT value (AUC = 0.836) and ISQ (AUC = 0.811).
  
  
  CONCLUSIONS
  Among the intraoperative parameters analyzed, IT showed the highest specificity at a high sensitivity of 1. Therefore, the IT can be considered the most valid prognostic factor for osseointegration of immediately loaded splinted dental implants.
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Wentaschek
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Herbert
authors.initials: H
authors.lastname: Scheller
authors.affiliation: Institute for Medical Biostatistics, Epidemiology and Informatics, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Irene
authors.initials: I
authors.lastname: Schmidtmann
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Sinsa
authors.initials: S
authors.lastname: Hartmann
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Weyhrauch
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Gernot
authors.initials: G
authors.lastname: Weibrich
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Karl Martin
authors.initials: KM
authors.lastname: Lehmann
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003758:Dental Implantation, Endosseous / Q000592:standards; D015921:Dental Implants / Q000592:standards*; D017268:Dental Prosthesis Retention; D019232:Dental Restoration Failure / Q000706:statistics & numerical data; D003799:Dental Stress Analysis; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000592:standards* / Q000706:statistics & numerical data; D008297:Male; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D019415:Torque
chemical_list: D015921:Dental Implants
keywords: immediate loading; implant; maxilla; sensitivity; specificity; stability criteria