Effect of different intraoral scanners and post-space depths on the trueness of digital impressions

Emam, Marwa Nagy; Ghanem, Lomaya; Sadek, Hoda M Abdel

doi:10.17219/dmp/162573

Cited by 2 publications

(1 citation statement)

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“…Another interesting study revealed that printed splints tend to be thicker than the designed file, suggesting potential loss of precision during use [ 27 ]. Scanning, which replaces traditional intraoral impressions, can also introduce errors and distortions [ 28 ]. Additionally, the properties of impressions may change during disinfection.…”

Section: Discussionmentioning

confidence: 99%

Effects of Polishing and Artificial Aging on Mechanical Properties of Dental LT Clear® Resin

Paradowska-Stolarz

Weżgowiec

Małysa

et al. 2023

JFB

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Three-dimensional printing has become incorporated into various aspects of everyday life, including dentistry. Novel materials are being introduced rapidly. One such material is Dental LT Clear by Formlabs, a resin used for manufacturing occlusal splints, aligners, and orthodontic retainers. In this study, a total of 240 specimens, comprising two shapes (dumbbell and rectangular), were evaluated through compression and tensile tests. The compression tests revealed that the specimens were neither polished nor aged. However, after polishing, the compression modulus values decreased significantly. Specifically, the unpolished and nonaged specimens measured 0.87 ± 0.02, whereas the polished group measured 0.086 ± 0.03. The results were significantly affected by artificial aging. The polished group measured 0.73 ± 0.05, while the unpolished group measured 0.73 ± 0.03. In contrast, the tensile test proved that the specimens showed the highest resistance when the polishing was applied. The artificial aging influenced the tensile test and reduced the force needed to damage the specimens. The tensile modulus had the highest value when polishing was applied (3.00 ± 0.11). The conclusions drawn from these findings are as follows: 1. Polishing does not change the properties of the examined resin. 2. Artificial aging reduces resistance in both compression and tensile tests. 3. Polishing reduces the damage to the specimens in the aging process.

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Section: Discussionmentioning

confidence: 99%