Long-term analysis of osseointegrated implants in non-smoker patients with a previous history of periodontitis.
OBJECTIVE
To evaluate long-term clinical and radiographic parameters of osseointegrated implants in non-smoker patients with a previous history of chronic periodontitis.


METHODS
Fifty-four screw-type implants with a moderately roughened surface and internal hexagonal implant-abutment connection were placed according to a two-phase protocol and 40 reference teeth were analysed at baseline, and after 5 and 10 years. Pocket probing depth (PPD), clinical attachment level (CAL) and bleeding on probing were analysed 6x/tooth in all teeth, implants and reference teeth. Radiographic peri-implant bone level was measured on the mesial and distal surfaces. The prevalence of peri-implantitis and the survival rate of the implants were assessed at the patient and implant levels. Data were analysed using descriptive statistics, Mann-Whitney U-test, and Wald Z-test, at α = 5%.


RESULTS
In implants, the CAL at 5 years was 0.3 mm higher, and at 10 years 1.2 mm higher in comparison to baseline. The corresponding data for the reference teeth were 0 mm and 0.5 mm respectively. Multilevel testing showed statistical difference for PPD between implants and teeth over time. After 10 years, the mean mesial bone loss was 0.63 ± 0.26 mm, and the mean distal bone loss was 0.56 ± 0.25. The survival rates were 100% and 92.3% for the implants in the mandible and the implants in the maxilla respectively.


CONCLUSIONS
Screw-type implants with internal hexagon placed in patients with a previous history of periodontitis attending a regular maintenance programme demonstrated stable clinical and radiographic results after 5 and 10 years.
Department of Periodontology, Dental School Justus-Liebig-University of Giessen, Giessen, Germany.
Joerg
J
Meyle
Gero
G
Gersok
Rolf-Hasso
RH
Boedeker
José Roberto
JR
Gonzales
D016301:Alveolar Bone Loss / Q000145:classification / Q000000981:diagnostic imaging; D055113:Chronic Periodontitis / Q000503:physiopathology* / Q000628:therapy; D015331:Cohort Studies; D059605:Dental Implant-Abutment Design; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation / Q000601:surgery; D008137:Longitudinal Studies; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology*; D057873:Peri-Implantitis / Q000145:classification; D017622:Periodontal Attachment Loss / Q000145:classification; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000145:classification; D011446:Prospective Studies; D011859:Radiography; D013499:Surface Properties; D016019:Survival Analysis; D016896:Treatment Outcome
D015921:Dental Implants
bone level; dental implants; long-term; periodontitis; supportive periodontal treatment; survival rate