Please use this identifier to cite or link to this item: https://repositorio.ufrn.br/jspui/handle/123456789/20926
Title: Longitudinal Clinical Evaluation of Undercut Areas and Rest Seats of Abutment Teeth in Removable Partial Denture Treatment
Authors: Aquino, Ana Rafaela Luz de
Barreto, Alessandra Oliveira
Aquino, Luana Maria Martins de
Ferreira, Maria Angela Fernandes
Carreiro, Adriana da Fonte Porto
Keywords: Removable partial denture;Surveying;Abutments
Issue Date: 2011
Citation: AQUINO, Ana Rafaela Luz de et al. Longitudinal clinical evaluation of udercut areas and rests seats of abutment teeth in removable partial denture. Journal of Prosthodontics, v. 20, n. 8, p. 639-642, 2011.
Portuguese Abstract: PURPOSE: Adequate preparation of abutment teeth for removable partial denture (RPD) rest seats allows appropriate masticatory force transmission, retention, and stability of supporting structures. It follows that careful preparation will be important for the longevity of the rehabilitation. The present study aimed to clinically evaluate rest seats and undercut areas of abutment teeth in RPD wearers after 2 years of use. MATERIALS AND METHODS: A total of 193 occlusal, incisal, and cingulum rest seats were evaluated in terms of shape, rest adaptation, wear, caries, fractures, and surface type (enamel, composite resin, or amalgam). Two hundred and fourteen undercut areas were evaluated in terms of surface type (enamel or restoration) and integrity. This study was approved by the Research Ethics Committee of the Federal University of Rio Grande do Norte, resolution 196/1996, protocol number 11/05. RESULTS: Intact preparations accounted for 92.2% of the total. Application of the Pearson test (p= 0.289) found no statistically significant differences among the materials on which the rest seats were prepared. For the undercut areas, 20.7% of those obtained on restorative material were nonintact. In addition, Fisher's exact test showed a statistically significant difference (p= 0.001) in surface type; enamel surfaces were shown to be 14 times more stable than restored surfaces. CONCLUSIONS: The results of this study suggest that rest seats are stable, regardless of the material on which they are prepared. Retentive areas were shown to be more stable when they were located in enamel.
URI: https://repositorio.ufrn.br/jspui/handle/123456789/20926
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