IADR Abstract Archives
OHRQoL Comparison Between Cobalt Chrome Versus Polymer Removable Partial Dentures
Objectives: To evaluate the change in patient Oral Health-related Quality of Life (OHRQoL) after wearing a novel polymer denture compared to a cobalt chrome removable partial denture for a period of 8 weeks and to determine patient preference between the polymer and chrome framework for continuing use.
Methods: This prospective study enrolled patients from 2 centres in the UK and USA. Eligibility criteria required patients to have stable oral health, a maximum of 4 teeth absent in one saddle, at least one posterior occlusal stop and routinely wearing a cobalt chrome RPD in one arch (fitted within the last 60 months). Clinical stages for construction of the denture followed standard techniques. Ultaire TM arylketone polymer (AKP) prostheses were milled from the Dentivera TM Milling Discs using CAD/CAM systems.
Patients completed Oral Health related Quality of Life (OHIP-14) questionnaires at Visit 2 (when wearing the cobalt chrome denture) and Visit 8 (having worn the polymer framework for 8 weeks). 38 patients completed the questionnaire at both time points. Reliability of the questionnaire was assessed by Cronbach’s statistic. The treatment associated change in OHRQoL was evaluated through Wilcoxon signed-rank test. Patient preference between treatments was assessed using McNemar test.
Results: The study recruited 47 patients, 28 (59.6%) of which were women. The average age was 64.6 years (Standard deviation: 12.4 years). 44 patients were assessed on their chrome cobalt metal frame with median OHIP-14 score of 11.42 (Interquartile range [IQR]: 6.00-21.00). 38 patients were assess on the polymer framework with median OHIP-14 score of 8.00 (IQR: 2.00-13.00). The median treatment associated change in OHIP-14 was -4.50 (IQR: -16.00, 4.00), A greater number of patients had improved outcomes for QoL based upon wear of the polymer framework. Of 38 patients who completed both treatments, more patients preferred the polymer frame (78.9%, 30/38) than the metal frame (21.1%) (McNemar test, p-value < 0.001).
Conclusions: Patients who used the polymer RPD after a metal framework RPD, showed improvement in OHRQol. Additionally, 78.9% of patients preferred the polymer RPD over their conventional metal framework.
Methods: This prospective study enrolled patients from 2 centres in the UK and USA. Eligibility criteria required patients to have stable oral health, a maximum of 4 teeth absent in one saddle, at least one posterior occlusal stop and routinely wearing a cobalt chrome RPD in one arch (fitted within the last 60 months). Clinical stages for construction of the denture followed standard techniques. Ultaire TM arylketone polymer (AKP) prostheses were milled from the Dentivera TM Milling Discs using CAD/CAM systems.
Patients completed Oral Health related Quality of Life (OHIP-14) questionnaires at Visit 2 (when wearing the cobalt chrome denture) and Visit 8 (having worn the polymer framework for 8 weeks). 38 patients completed the questionnaire at both time points. Reliability of the questionnaire was assessed by Cronbach’s statistic. The treatment associated change in OHRQoL was evaluated through Wilcoxon signed-rank test. Patient preference between treatments was assessed using McNemar test.
Results: The study recruited 47 patients, 28 (59.6%) of which were women. The average age was 64.6 years (Standard deviation: 12.4 years). 44 patients were assessed on their chrome cobalt metal frame with median OHIP-14 score of 11.42 (Interquartile range [IQR]: 6.00-21.00). 38 patients were assess on the polymer framework with median OHIP-14 score of 8.00 (IQR: 2.00-13.00). The median treatment associated change in OHIP-14 was -4.50 (IQR: -16.00, 4.00), A greater number of patients had improved outcomes for QoL based upon wear of the polymer framework. Of 38 patients who completed both treatments, more patients preferred the polymer frame (78.9%, 30/38) than the metal frame (21.1%) (McNemar test, p-value < 0.001).
Conclusions: Patients who used the polymer RPD after a metal framework RPD, showed improvement in OHRQol. Additionally, 78.9% of patients preferred the polymer RPD over their conventional metal framework.