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Effect of Different Coring Thicknesses on Tooth Movement During Processing of Complete Dentures: An In Vitro Study
Akshaya Kadunganari1, Nandakumar Karamannattil1, Aysha Mohamed Ali Kp1
1Department of Prosthodontics, Crown and Bridge, Muslim Educational Society (MES) Dental College, Perinthalmanna, IND.
Objective:
This in vitro study was designed to assess the impact of varying coring thicknesses on the extent and orientation of tooth movement during complete denture fabrication.
Materials And Methods:
Standardized maxillary and mandibular complete denture wax-ups were fabricated and divided into four groups based on coring thickness (1 mm, 1.5 mm, 2 mm, and 2.5 mm). Coring was achieved using vacuum-formed thermoplastic sheets of predetermined thickness adapted over the occlusal surfaces. A total of 112 samples (n = 28 per group) were processed using conventional heat-cured polymethyl methacrylate (PMMA) denture base resin. Pre- and post-processing intermolar distances were measured using a digital caliper, and tooth movement was analyzed using one-way ANOVA with Bonferroni post hoc tests.
Results:
Tooth movement was observed in all groups; however, a significant difference was noted between the groups. Group A exhibited the lowest degree of tooth displacement, followed by Groups B, C, and D. Decreasing the coring thickness showed a statistically significant reduction in tooth movement, particularly in the anteroposterior (p<0.05) movement.
Conclusion:
Within the scope of the present study, it was inferred that a 1 mm thickness of coring was found to be the ideal coring thickness. This suggests that incorporating optimal coring thickness may enhance the accuracy and stability of complete dentures.
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