title: Immediate Implants Placed in Fresh Sockets Associated with Periapical Pathology: A Split-Mouth Design and Survival Evaluation after 1-Year Follow-Up.
abstract: OBJECTIVE
  To compare the immediate implant success rates between sites with chronic apical lesions and healthy sites in the same patients 1 year postdelayed loading.
  
  
  METHODS
  One hundred sixty-eight immediate implants were placed in sixty patients at upper incisor, canine, and premolar sites. A split-mouth design was used, placing a minimum of two implants, one in a fresh socket associated with chronic periapical disease, the average lesion size was larger than 4 mm and less than 8 mm (test group), and the other(s) in a healthy fresh socket (control group). Implant survival rate at 1 year postloading delayed was compared between the groups.
  
  
  RESULTS
  The implant survival rate was 98.2% for the total sample (n = 168); out of the three implants lost, two were from the test group, and one was from the control group (in the same patient as one of the former). Among the surviving implants, five were also considered failures due to excessive bone loss (n = 3) and also because of the recurrence of the periapical lesions (n = 2). Survival rates were significantly lower in the test than control sites at 12 months postloading.
  
  
  CONCLUSIONS
  Implant survival rates were significantly lower after the immediate implantation in postextraction sockets associated with chronic periapical disease (90.8%) than in healthy postextraction sockets (98.1%).
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Hita-Iglesias
authors.affiliation: Dental and Maxillofacial Surgery Department, Vinalopó Hospital, Elche, Alicante, Spain.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Sánchez-Sánchez
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Salamanca, Salamanca, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Montero
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: Pablo
authors.initials: P
authors.lastname: Galindo-Moreno
authors.affiliation: Periodontology Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Mesa
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: Ildefonso
authors.initials: I
authors.lastname: Martínez-Lara
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: Sánchez-Fernández
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015921:Dental Implants; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D019227:Tooth Apex / Q000473:pathology*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D015921:Dental Implants
keywords: immediate implant; periapical pathology