In Vitro Comparative Analysis of Fracture Resistance in Inlay Restoration Prepared with CAD-CAM and Different Systems in the Primary Teeth

Abstract

Objective. The aim of this study was to compare to fracture resistance test of inlay restorations prepared using direct inlay technique (Gradia® Direct Composite) and Indirect Restoration System® (Gradia Indirect Composite) and CAD/CAD system (Vita Enamic® Block). Study Design. 48 noncarious extracted maxillary second primary molars were randomly divided into 4 groups with 12 in each group. All the teeth were prepared based on inlay class II preparations except for the control group. Other groups were restored with Gradia Direct Composite, Gradia Indirect Composite, and Vita Enamic Block, respectively. All restorations were cemented self-adhesive dual cure resin (3M Espe, RelyX™ Unicem Aplicap). A fracture test was performed using a compressive load. Results were analyzed using one-way analysis of variance and Duncan's post hoc multiple comparison tests (α = 0.05). Results. Vita Enamic Block and Gradia Indirect Composite showed significantly higher fracture resistance than Gradia Direct Composite (p < 0.05). There was no significant difference fracture resistance between Vita Enamic Block and Gradia Indirect Composite (p > 0.05). All restorations tested led to a significant reduction in fracture resistance (p < 0.05). Conclusion. In inlay restorations, Indirect Restoration Systems and CAD/CAM systems were applied successfully together with the self-adhesive dual cure resin cements in primary molars.

Vickers Micro-Hardness of New Restorative CAD/CAM Dental Materials: Evaluation and Comparison after Exposure to Acidic Drink

“…CAD/CAM (computer-aided design/computer-aided manufacturing) technology was introduced in dentistry during the 1980s, originally called CEREC because it was used to mill ceramic materials (CEramic REConstruction) [5]. This technology is nowadays widely used in the production of frameworks in conservative dentistry [6], prosthodontics [7], orthodontics [8], and pediatric dentistry [9].…”

Effects of different etching methods and bonding procedures on shear bond strength of orthodontic metal brackets applied to different CAD/CAM ceramic materials

“…Differences arise from the type of production and the chemical and physical properties of ceramic material. 15,16 The purpose of this in vitro study was to investigate the shear bond strength of orthodontic metal brackets applied to different types of ceramic surfaces treated with different etching procedures and bonding agents.…”

Computer-aided Design and Manufacturing Crown on Primary Molars: An Innovative Case Report

“…21 Moreover, it involves a shorter clinical working time, less wear of the opposing dentition, and the choice of more biocompatible materials. 22 To the best of our knowledge, this is the first case report of a CAD/CAM crown on a first primary molar in the literature. However, there are limited cases of restorations on primary teeth with CAD/CAM technology that are associated with the fabrication of inlays or onlays for a primary decayed tooth or the fabrication of an endocrown.…”