Prevalência de cárie dentária em nichos de prótese parcial removível

Activity: Supervision


Introduction: dental prostheses are aimed at partial or total rehabilitation, restoring aesthetics and function to the patient. For confection of removable partial dentures it is often necessary to make rest seat on the surfaces of the abutment teeth for a correct adaptation of the supports and consequently a correct support of the prosthesis in the mouth. The knowledge about the causes of failure of this prosthetic device, as well as its survival are of extreme importance in order to perform a correct planning and execution of the prosthetic procedure, guaranteeing the best available treatment to the patient and minimizing the biological failures. Therefore, the present study aimed to evaluate the prevalence of dental caries in the rest seat of the denture teeth of removable partial dentures. Materials and Methods: the observations proposed in the presente study were made in twenty-nine volunteers patients, who recived skeletal removable partial dentures at the UCO-Viseu University Dental Clinic between 2011 and 2017, through follow-up visit. For this reason specific control data files were elaborated to recorded regarding the oral cavity and the prosthesis. Results: the results obtained through the statistical analysis were submitted to the Mann-Whitney analysis and Pearson's correlation. It was verified that 48% of the patients presented bi-maxillary rehabilitation and of the 144 evaluated rest seat, 19 presented dental caries. A positive and significant correlation was observed between caries of the CPO index of non-abutment teeth and the number of carious rest seat. In relation to the homologous teeth of the abutments and the number of carious rest seat it is observed that there is a significant difference between who has and who does not have caries in the homologous teeth. However, there was no significant association among the caries rest seat, number of rest seat, prosthetic quality index, dentin invasion and abutment antagonists. Conclusions: within the limitations of the present study, particularly related to the sample size, it is concluded that there is no prevalence of caries lesions in prosthetic rest seat, but the greater the number of rest seats in a rehabilitation, the greater the probability of caries lesions. Further studies with larger samples are needed to obtain more scientific evidence on this subject.
Period12 Sept 2018
Held atUniversidade Católica Portuguesa
Degree of RecognitionMaster


  • Removable partial denture
  • Occlusal support
  • Rest seat
  • Dental caries