title: Correlation between clinical parameters characterising peri-implant and periodontal health: a practice-based research in Spain in a series of patients with implants installed 4-5 years ago.
abstract: OBJECTIVE
  To explore peri-implant health (and relation with periodontal status) 4-5 years after implant insertion.
  
  
  METHODS
  A practice-based dental research network multicentre study was performed in 11 Spanish centres. The first patient/month with implant insertion in 2004 was considered. Per patient four teeth (one per quadrant) showing the highest bone loss in the 2004 panoramic X-ray were selected for periodontal status assessment. Bone losses in implants were calculated as the differences between 2004 and 2009 bone levels in radiographs.
  
  
  RESULTS
  A total of 117 patients were included. Of the 408 teeth considered, 73 (17.9%) were lost in 2009 (losing risk: >50% for bone losses ≥7 mm). A total of 295 implants were reviewed. Eight of 117 (6.8%) patients had lost implants (13 of 295 implants installed; 4.4%). Implant loss rate (quadrant status) was 1.4% (edentulous), 3.6% (preserved teeth), and 11.1% (lost teeth) (p=0.037). The percentage of implant loss significantly (p<0.001) increased when the medial/distal bone loss was ≥3 mm. The highest (p≤0.001) pocket depths were found in teeth with ≥5 mm and implants with ≥3 mm bone losses, with similar mean values (≥4 mm), associated with higher rates of plaque index and bleeding by probing.
  
  
  CONCLUSIONS
  The significant bi-directional relation between plaque and bone loss, and between each of these two parameters/signs and pocket depths or bleeding (both in teeth and implants, and between them) together with the higher percentage of implants lost when the bone loss of the associated teeth was ≥3 mm suggest that the patient's periodontal status is a critical issue in predicting implant health/lesion.
authors.affiliation: Sociedad Española de Implantes (SEI) Orense 51, Bajo C, 28020 Madrid, Spain.
authors.forename: Roberto
authors.initials: R
authors.lastname: Lopez-Piriz
authors.forename: Araceli
authors.initials: A
authors.lastname: Morales
authors.forename: Maria-Jose
authors.initials: MJ
authors.lastname: Giménez
authors.forename: Antonio
authors.initials: A
authors.lastname: Bowen
authors.forename: Rafael
authors.initials: R
authors.lastname: Carroquino
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Aguilar
authors.forename: Ignacio
authors.initials: I
authors.lastname: Corral
authors.forename: Cora
authors.initials: C
authors.lastname: del Val
authors.forename: Inmaculada
authors.initials: I
authors.lastname: González
authors.forename: Luis-Maria
authors.initials: LM
authors.lastname: Ilzarbe
authors.forename: Juan-Ramon
authors.initials: JR
authors.lastname: Maestre
authors.forename: Esteban
authors.initials: E
authors.lastname: Padullés
authors.forename: Francisco
authors.initials: F
authors.lastname: Torres-Lear
authors.forename: Juan-Jose
authors.initials: JJ
authors.lastname: Granizo
authors.forename: Fidel
authors.initials: F
authors.lastname: San-Román
authors.forename: Sofia
authors.initials: S
authors.lastname: Hernández
authors.forename: Jose
authors.initials: J
authors.lastname: Prieto
mesh_terms: D035843:Biomedical Research; D015921:Dental Implants; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D057873:Peri-Implantitis / Q000175:diagnosis / Q000453:epidemiology; D010512:Periodontal Index; D010518:Periodontitis / Q000175:diagnosis / Q000453:epidemiology; D013030:Spain; D013997:Time Factors
chemical_list: D015921:Dental Implants