IADR Abstract Archives
Monolithic Complete Dentures From Two-Color Shell-Geometry Disks: a Pilot Study.
Objectives: This pilot study aims to evaluate monolithic digital complete dentures fabricated from shell-geometry two-colored Polymethylmethacrylate pucks (Ivotion®, Ivoclar).
Methods: Ethical approval was obtained. The Biofunctional Prosthetic System (Ivoclar) workflow was used for manufacturing complete upper and lower dentures. Analogue impressions and bite-registrations were scanned and the dentures designed digitally before milling. The primary outcome were the accuracy of the transition between pink and white resin, as well as an esthetic score. Secondary outcomes included oral health-related quality of life (OHRQoL) measured with OHIP-EDENT, denture satisfaction index (DSI), chewing efficiency (CE), maximum bite force (MBF), bite pressure (BP) and prosthetic maintenance. Data analysis included descriptive statistics and multivariate comparison tests.
Results: Three women and 7 men with a mean age of 65 years participated in the study; 9 completed the 3-month follow-up. Evaluations were performed with the old dentures (Baseline) as well as 2- and 12-post insertion. On average four appointments were used until denture delivery. Among the 20 Complete removable dental prostheses, 8 presented imperfections of the white-pink transition with a median of 1 mm (range 0.3-10mm). After 2 weeks and consistently thereafter the novel dentures were scored higher on the esthetic score than the old dentures (P<0.05), except surface details of pink denture base. A marked improvement, yet non-significant, of OHRQoL, DSI and CE was noted between baseline and the 3-months follow-up (Baseline: OHIP-EDENT: 13.67; DSI: 89.77; CE: 0.364, 3-months: OHIP-EDENT: 5.78; DSI: 96.44; CE: 0.344). MBF and BP improved significantly over the observation period (p<0.05). Prosthodontic maintenance events included 2 small adjustments before the 2-week follow-up.
Conclusions: The positive evaluations on esthetics, MBF and BP suggest that this novel system using a monolithic two-colored shell-geometry resin puck for CAD/CAM complete denture manufacturing seems to be a viable treatment modality that warrants further investigation.
Methods: Ethical approval was obtained. The Biofunctional Prosthetic System (Ivoclar) workflow was used for manufacturing complete upper and lower dentures. Analogue impressions and bite-registrations were scanned and the dentures designed digitally before milling. The primary outcome were the accuracy of the transition between pink and white resin, as well as an esthetic score. Secondary outcomes included oral health-related quality of life (OHRQoL) measured with OHIP-EDENT, denture satisfaction index (DSI), chewing efficiency (CE), maximum bite force (MBF), bite pressure (BP) and prosthetic maintenance. Data analysis included descriptive statistics and multivariate comparison tests.
Results: Three women and 7 men with a mean age of 65 years participated in the study; 9 completed the 3-month follow-up. Evaluations were performed with the old dentures (Baseline) as well as 2- and 12-post insertion. On average four appointments were used until denture delivery. Among the 20 Complete removable dental prostheses, 8 presented imperfections of the white-pink transition with a median of 1 mm (range 0.3-10mm). After 2 weeks and consistently thereafter the novel dentures were scored higher on the esthetic score than the old dentures (P<0.05), except surface details of pink denture base. A marked improvement, yet non-significant, of OHRQoL, DSI and CE was noted between baseline and the 3-months follow-up (Baseline: OHIP-EDENT: 13.67; DSI: 89.77; CE: 0.364, 3-months: OHIP-EDENT: 5.78; DSI: 96.44; CE: 0.344). MBF and BP improved significantly over the observation period (p<0.05). Prosthodontic maintenance events included 2 small adjustments before the 2-week follow-up.
Conclusions: The positive evaluations on esthetics, MBF and BP suggest that this novel system using a monolithic two-colored shell-geometry resin puck for CAD/CAM complete denture manufacturing seems to be a viable treatment modality that warrants further investigation.