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Bone resorption in different parts of the mandible in patients restored with an implant overdenture. A retrospective radiographic analysis.
Kremer, Urs; Schindler, Sven; Enkling, Norbert; Worni, Andreas; Katsoulis, Joannis; Mericske-Stern, Regina.
Afiliación
  • Kremer U; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
  • Schindler S; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
  • Enkling N; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
  • Worni A; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
  • Katsoulis J; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
  • Mericske-Stern R; Department of Prosthodontics, School of Dental Medicine, University of Bern, Bern, Switzerland.
Clin Oral Implants Res ; 27(3): 267-72, 2016 Mar.
Article en En | MEDLINE | ID: mdl-25418368
AIM: This study investigated the pattern of resorption of the mandibular ridge under implant-supported overdentures. MATERIAL AND METHODS: Files of 60 patients were available for analysis (45 women and 15 men, mean age at the time of the follow-up 76.5 ± 8.5 years, 54 patients restored with bars, 6 with ball anchors). A baseline was defined by different stable landmarks and quartered. Linear measurements from this baseline at different clinical relevant sites approximately at: (i) the area close to the mental foramen/close to the implant, (ii) the chewing center, and (iii) the distal edge of the denture flange were carried out on rotational tomograms (OPTs). The OPTs were taken after prosthetic restoration and at an individual follow-up time (mean 11 ± 4.75 years). The known implant length served to scale each measurement to avoid any distortion errors. RESULTS: The resorption rate showed a high individual variation, but among the three sites, the difference was highly significant. Median values of site (i) left = -0.07 mm/right = +0.05 mm, site (ii) left = -0.60 mm/right = -0.55 mm, and site (iii) left = -1.58 mm/right = -2.01 mm. CONCLUSIONS: The load of the distal flange of a mandibular implant overdenture increases bone resorption as a local factor, whereas implants may help to prevent resorption in the neighboring bone. An individual-adapted follow-up protocol should be established for each patient restored with an implant overdenture.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Resorción Ósea / Pérdida de Hueso Alveolar / Prótesis Dental de Soporte Implantado / Dentadura Completa / Prótesis de Recubrimiento / Mandíbula Tipo de estudio: Guideline / Observational_studies / Prognostic_studies Límite: Aged / Female / Humans / Male Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Dinamarca
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Resorción Ósea / Pérdida de Hueso Alveolar / Prótesis Dental de Soporte Implantado / Dentadura Completa / Prótesis de Recubrimiento / Mandíbula Tipo de estudio: Guideline / Observational_studies / Prognostic_studies Límite: Aged / Female / Humans / Male Idioma: En Revista: Clin Oral Implants Res Asunto de la revista: ODONTOLOGIA Año: 2016 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Dinamarca