Bone resorption processes in patients wearing overdentures: a 6-years retrospective study
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Andrés López-Roldán [1] ; Diego Santolaya Abad [1] ; Isabel Gregori Bertomeu [1] ; Emma Gómez Castillo [1] ; Eduardo Selva Otaolaurruchi [1]
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[1] Universitat de València
Universitat de València
Valencia, España
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- Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 1, Nº. 1 (Septiembre), 2009, págs. 24-30
- Idioma: inglés
- Enlaces
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Resumen
Objectives:
1. – To measure the alveolar resorption processes that occur in patients wearing mandibular overdentures on 2 implants and fully-removable maxillary dentures, and to evaluate the same process on patients wearing fully- removable dentures on both arches.
2.- To verify whether Kelly’s Combination Syndrome occurs in the group of patients wearing overdentures.
Method and Material:
Forty patients were evaluated, of which a “cases” group was formed by 25 patients wearing mandibular overdentures on 2 lower jaw implants and fully-removable dentures on the opposite arch. The other 15 patients formed a control group that wore fully-removable dentures on both arches.
Each one of the patients underwent orthopantograms from the moment the dentures were inserted until an average of 6 years later, which were assessed based on the Xie et al. method to estimate vertical bone loss. Once the data was collected, it was subjected to statistical analysis.
Results:
In terms of the maxillary midline, we observed a greater loss in patients wearing overdentures, which was statistically significant, as it registered 0.32 mm/year. Mandibular bone loss was 2.5 times less in patients in the cases group. The rest of the clinical criteria for Kelly’s Combination Syndrome were not observed.
Conclusions:
Kelly’s Combination Syndrome did not occur in the patients in the cases group. In spite of the greater bone loss on a premaxillary level in this group, the placing of the overdenture on the implants significantly reduced mandibular bone resorption.
