Comparison of artificial tooth position in dentures fabricated by heat curing and additive manufacturing

Abstract

Background: The purpose of this study was to compare the displacement of tooth arrangement in dentures fabricated by additive manufacturing (AM) and heat curing. Methods: Three-dimensional (3D) scanning was performed for edentulous jaw models. After the teeth were arranged, 3D scanning for the wax denture was performed. Heat-cured dentures were fabricated with heat-cure polymer resin. Based on data obtained by subtracting the model data from wax denture data, AM dentures were fabricated from ultravioletcured acrylic resin. Accuracy was verified by superimposing heat-cured and AM dentures on the tooth region data from the wax dentures and measuring displacement of the tooth arrangement. Results: In the maxillary dentures, the amount of tooth displacement for the heat-cured dentures and for the AM dentures ranged from À0.08 to +0.06 mm and from À0.25 to +0.06 mm respectively. A significant difference was observed between two dentures. In the mandibular dentures, the amount of tooth displacement for the heat-cured dentures and for the AM dentures ranged from À0.09 to +0.07 mm and from À0.03 to +0.07 mm respectively. No significant difference was observed between two dentures. Conclusions: The artificial teeth of the maxillary dentures fabricated by AM showed a greater displacement compared to those by heat curing.

Contemporary Evidence of CAD-CAM in Dentistry: A Systematic Review

“…This inference was shared by the studies by Awada et al [9] and Homaei et al [11] that we selected for our review, which showed the use of ceramic in the fabrication of prostheses using CAD/CAM technology. It is quite remarkable that all the inferences that we observed after reviewing the studies that we selected for our review [9][10][11][12][13][14][15][16][17][18][19][20][21][22] are in agreement with investigations done by Papadiochou et al [30], Ahmed et al [31], and Bilgin et al [32]. An inference that these three studies shared is that by improving the quality of the instruments and systems utilized, CAD/CAM in several dental specialties has opened up new potential for providing high-quality dental care while also theoretically increasing patient convenience [30][31][32].…”

“…Again, CAD/CAM deserves praise. Due to the fact that it is invisible, the lingual bracket procedure is highly common [ 19 ]. The wires and bracket systems for the lingual bracket system are produced using CAD/CAM fabrication [ 25 ].…”

Clinical Applications of 3D-Printed Polymers in Dentistry: A Scoping Review

“…Similar results were found when printed denture teeth position was compared to conventional mandibular dentures, but the authors interestingly reported a significant difference in position on maxillary dentures. 47 One in vitro study compared the accuracy and trueness of different denture teeth polymers printed with different printers. 48 As expected, significant differences were observed amongst the combinations of printer and material.…”