title: Relation between initial implant stability quotient and bone-implant contact percentage: an in vitro model study.
abstract: OBJECTIVE
  This study evaluated the correlation between the initial stability of a dental implant, quantified as the implant stability quotient (ISQ), and the bone-implant contact percentage ( BIC%).
  
  
  METHODS
  Dental implants were inserted into specimens comprising an artificial cortical shell representing cortical bone and foam bone representing cancellous bone with 4 elastic moduli. Each specimen with an implant was subjected to microcomputed tomography (micro-CT) scanning, from which the 2D and 3D BIC% values were calculated. The values of the Spearman correlation coefficient (r) were calculated between the ISQ and the 2D and 3D BIC% values.
  
  
  RESULTS
  Increasing the elasticity of the specimen enhanced the ISQ. There was statistically significant correlation between the ISQ and 3D BIC% values (r = 0.85, P < .0001). However, the correlation between ISQ and 2D BIC% values was not statistically significance (r = 0.42, P = .062).
  
  
  CONCLUSIONS
  The initial implant stability was strongly positively correlated with the 3D BIC%.
authors.affiliation: Associate Professor, School of Dentistry, China Medical University, Taichung, Taiwan.
authors.forename: Heng-Li
authors.initials: HL
authors.lastname: Huang
authors.forename: Ming-Tzu
authors.initials: MT
authors.lastname: Tsai
authors.forename: Kuo-Chih
authors.initials: KC
authors.lastname: Su
authors.forename: Yu-Fen
authors.initials: YF
authors.lastname: Li
authors.forename: Jui-Ting
authors.initials: JT
authors.lastname: Hsu
authors.forename: Chih-Han
authors.initials: CH
authors.lastname: Chang
authors.forename: Lih-Jyh
authors.initials: LJ
authors.lastname: Fuh
authors.forename: Aaron Yu-Jen
authors.initials: AY
authors.lastname: Wu
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging / Q000502:physiology; D015921:Dental Implants; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D055119:Elastic Modulus; D021621:Imaging, Three-Dimensional; D008961:Models, Structural; D055114:X-Ray Microtomography
chemical_list: D015921:Dental Implants