Evaluation Of Retention and Assessment of Biting Force Distribution of a Complete Denture Fabricated Using 3D Printed Custom Trays with Arcus Digma Versus Conventional Method (A Cross Over Study)

Abstract

The purpose: of this study is to evaluate retention and occlusion of complete dentures fabricated using 3D printed custom trays with the aid of arcus digma in less steps versus conventional method. Material and method: Ten patients were selected to participate in this study. For each one, two complete dentures were constructed, Group I were rehabilitated with a conventional complete denture, while Group II were rehabilitated with a complete denture constructed using 3D designed and printed custom trays with gothic arch tracing of jaw relation with the help of arcus digma. Results: By comparing the two groups there was a significant difference between them in biting force distribution where (SD) values for biting force difference posteriorly between the right and left posterior segments for centric occlusion was significantly higher for Group I (20.52±7.99) than Group II (14.45±7.33). Anteriorly Group I (27.85±25.68) had significantly higher mean value for biting force distribution than Group II (21.70±23.92). While there was no significant difference between them in retention evaluation where Group II (31.36±2.73) showed higher mean value than Group I (28.95±5.95), yet the difference was not significant. Conclusion:Within the limitations of this study, it was found that dentures made by using gothic arch technique in taking centric relation by the help of arcus digma was more accurate in occlusion, this means that the force was more evenly distributed on the denture leading to better stability and fewer adjustments. Dentures made using this technique also had retention competent to regular dentures.

Clinical outcomes of incorporating neutral zone and CAD/CAM technology into complete denture workflow (Crossover Randomized Clinical Trial)

“…4 The field of digital dentistry is expanding significantly, and CAD/CAM complete denture construction has been proven to provide more adapted, retentive, and stable dentures than conventional techniques, as it eliminates the effect of polymerization shrinkage. 5,6 Faty et al, 7 examined the retention and adaptation of milled and 3D-printed denture bases and compared them to conventional ones. The findings indicated notable distinctions between the three groups; 3D-printed denture bases demonstrated better retention, but their adaptation was comparable to that of traditional heat-polymerized denture bases, while milled denture bases demonstrated better adaptation and retention than both of the other groups.…”

Comparison between cone beam CT and TMJ digital tracing to record the Bennett angle and their effect on the occlusion of complete denture

“…It is practical to transmit data from a mean articulator through the quantification of angular displacement in degrees. The accuracy of lateral condyle guidance in the fabrication of complete dentures can have a significant impact on the fit and function of the denture (2) .…”