Influence of Crown-to-Implant Ratio on Long-Term Marginal Bone Loss Around Short Implants.
Int J Oral Maxillofac Implants
; 34(4): 992998, 2019.
Article
de En
| MEDLINE
| ID: mdl-30779823
ABSTRACT
PURPOSE:
To evaluate the influence of the crown-to-implant ratio (CI) on marginal bone loss (MBL) around short dental implants placed in the posterior mandible. MATERIALS ANDMETHODS:
All patients treated with short implants (7 mm length) in the posterior mandible between 1994 and 2003 at the Dental Clinic of the Department of Neuroscience of the University of Padua (Italy) were retrospectively included in the analysis. MBL and clinical CI (cCI) were measured on the radiographs. Implant characteristics including implant diameter, prosthetic type, retention mode, antagonist type, veneering material, and implant surfaces were retrieved from local medical records. A generalized linear mixed model was estimated to identify the predictors of MBL.RESULTS:
A total of 108 dental implants placed in 51 patients were included in the analysis. Mean follow-up was 16 years (range 11 to 20 years). Mean cCI was 2.21 (SD = 0.31) with a mean crown height of 10.86 mm (SD = 0.99). Mean MBL was 1.42 mm (SD = 0.38). At multivariable analysis, cCI ≥ 2 was associated with higher MBL (regression coefficient 0.27; 95% CI 0.15 to 0.40), while implant characteristics, follow-up, and site were not associated with MBL. The effect of a cCI ≥ 2 was estimated in an increase of 0.28 mm in MBL (95% CI 0.14 to 0.43 mm).CONCLUSION:
Higher cCI was associated with greater MBL of implant-supported fixed dental prostheses in short dental implants placed in the posterior mandible, while implant characteristics, follow-up, and site were not associated with MBL. However, the increase of 0.28 mm of MBL in patients with a cCI ≥ 2 may be not clinically relevant.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Implants dentaires
/
Résorption alvéolaire
/
Couronnes
Type d'étude:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limites:
Humans
Pays/Région comme sujet:
Europa
Langue:
En
Journal:
Int J Oral Maxillofac Implants
Sujet du journal:
ODONTOLOGIA
Année:
2019
Type de document:
Article
Pays de publication:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA