title: Two-year follow-up of early- and conventionally-placed two-stage implants supporting fixed prostheses.
abstract: OBJECTIVE
  The objective of this study was to compare the biologic and prosthetic outcomes of early- and conventionally-placed implants supporting fixed prostheses.
  
  
  METHODS
  Using inclusion/exclusion criteria, early- and conventionally-placed implant patient groups, rehabilitated with Branemark System implants supporting fixed prostheses for 2 years, were selected from the patient archives. Kaplan-Meier survival estimates, time-dependent marginal bone loss, Plaque Index, peri-implant infection, Bleeding Index scores, and prosthetic complications data of the groups were compared.
  
  
  RESULTS
  A total of 212 implants were placed in early-placed (n=42, 101 implants) and conventionally-placed (n=45, 111 implants) patient groups and 5 implants failed during the 2-year follow-up. The 1- and 2-year Kaplan-Meier survival probabilities of early-placed (0.98) and conventionally-placed (0.973) groups were comparable (P=.735). The 6-month to 2-year marginal bone loss in the conventionally-placed group was higher than in the early-placed group (P<.05). There were differences between groups on soft tissue scores between the 2 years of function (P<.05). The frequency of prosthetic complications was very low and comparable in both groups (P=.476).
  
  
  CONCLUSIONS
  Early- and conventionally-placed implants supporting fixed prostheses showed comparable clinical outcomes during the 2-year follow-up, although the marginal bone loss was higher in the latter group.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ordu University, Ordu, Turkey.
authors.forename: Burak
authors.initials: B
authors.lastname: Bekcioglu
authors.forename: Elcin
authors.initials: E
authors.lastname: Sagirkaya
authors.forename: Durdu
authors.initials: D
authors.lastname: Karasoy
authors.forename: Murat
authors.initials: M
authors.lastname: Cehreli
mesh_terms: D016301:Alveolar Bone Loss / Q000175:diagnosis / Q000209:etiology; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods; D015921:Dental Implants; D003774:Dental Plaque Index; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects; D019232:Dental Restoration Failure / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D006472:Oral Hemorrhage / Q000175:diagnosis; D057873:Peri-Implantitis / Q000175:diagnosis; D011862:Radiography, Panoramic
chemical_list: D015921:Dental Implants