title: Biomechanical evaluation of dental implants in D1 and D4 bone by Finite Element Analysis.
abstract: OBJECTIVE
  The aim of the present study was to analyze stress and strain distribution in dental implants with different abutment's inclination inserted in D1 and D4 bone.
  
  
  METHODS
  The biomechanical behavior of 5 mm x 16 mm dental implants with straight, 15 degrees and 25 degrees angulated abutments subjected to static loads, in contact with D1 and D4 bone, was evaluated by Finite Element Analysis (FEA).
  
  
  RESULTS
  The lowest stress and strain values were found in the system composed by implants with straight abutments loaded with a 200-N vertical strength, while the highest stress and strain values were found in implants with 15 degrees angulated abutment loaded with a tilted strength (FY=200 N and FZ=140 N). Stress value increased from D1 to D4 bone, while strain value decreased due to the effect of normal elasticity mode of biological tissues.
  
  
  CONCLUSIONS
  The different stress and strain distribution in D1 and D4 bone tissue surrounding dental implants with a tapered neck could favor prosthetic load and play a role in implant long-term success.
authors.affiliation: Dental School La Sapienza University, Rome, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Danza
authors.forename: A
authors.initials: A
authors.lastname: Quaranta
authors.forename: F
authors.initials: F
authors.lastname: Carinci
authors.forename: L
authors.initials: L
authors.lastname: Paracchini
authors.forename: G
authors.initials: G
authors.lastname: Pompa
authors.forename: I
authors.initials: I
authors.lastname: Vozza
mesh_terms: D001696:Biomechanical Phenomena; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D017267:Dental Prosthesis Design; D020342:Finite Element Analysis; D013314:Stress, Mechanical
chemical_list: D015921:Dental Implants