Influence of crown-to-implant ratio on periimplant marginal bone loss in the posterior region: a five-year retrospective study
Journal of Periodontal & Implant Science
;
: 231-236, 2012.
Article
in English
| WPRIM
| ID: wpr-188640
ABSTRACT
PURPOSE:
The aim of this study was to evaluate the influence of the crown-to-implant (C/I) ratio on the change in marginal bone level around the implant and to determine the site-related factors influencing the relationship between the C/I ratio and periimplant marginal bone loss.METHODS:
A total of 259 implants from 175 patients were evaluated at a mean follow-up of five years. Implants were divided into two groups according to their C/I ratios 1. Site-related factors having an influence on the relationship between C/I ratio and periimplant marginal bone loss were analyzed according to the implant location, implant diameter, implant manufacturer, prosthesis type, and guided bone regeneration (GBR) procedure.RESULTS:
It was found that 1) implants with a C/I ratio below 1 exhibited greater periimplant marginal bone loss than implants with a C/I ratio more than 1, 2) site-related factors had an effect on periimplant marginal bone loss, except for the implant system used, 3) the C/I ratio was the factor having more dominant influence on periimplant marginal bone loss, compared with implant diameter, prosthesis type, implant location, and GBR procedure, 4) implants with a C/I ratio below 1 showed greater periimplant marginal bone loss than implants with a C/I ratio greater than 1 in the maxilla, but not in the mandible, 5) and periimplant marginal bone loss was more affected by the implant system than the C/I ratio.CONCLUSIONS:
Within the limitations of this study, implants with a higher C/I ratio exhibited less marginal bone loss than implants with a lower C/I ratio in the posterior regions. The C/I ratio was a more dominant factor affecting periimplant marginal bone loss in the maxilla than the mandible. Meanwhile, the implant system was a more dominant factor influencing periimplant marginal bone loss than the C/I ratio.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Prostheses and Implants
/
Bone Regeneration
/
Dental Implants
/
Retrospective Studies
/
Follow-Up Studies
/
Alveolar Bone Loss
/
Mandible
/
Maxilla
Type of study:
Observational study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
Journal of Periodontal & Implant Science
Year:
2012
Type:
Article
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