International journal of dentistry
Comparison of Conventional and Fiber-Reinforced Restorative Protocols Using Standardized Three-Dimensional Printed Cracked Tooth Models: An In Vitro Study
Par Corrêa IS, de Toubes KMPS, Antunes ANDG et 5 autres.
Contenu en anglais
Résumé
Objective
To compare the fracture resistance and failure patterns of different restorative protocols in standardized three-dimensional (3D)-printed cracked molars.
Methods
Sixty standardized mandibular molar models were fabricated from a single digital design using 3D printing technology and randomly allocated into five experimental groups (n = 12): sound teeth, cracked teeth (CT), CT with mesio-occluso-distal (MOD) cavity preparation, MOD cavities restored with conventional composite resin, and MOD cavities restored with a polyethylene fiber-reinforced composite protocol. Fracture resistance was evaluated by static compressive loading. Failure patterns were classified according to predefined criteria. Data were analyzed using the Kruskal-Wallis test followed by Dunn's post hoc test with Bonferroni adjustment (α = 0.05).