Digitally designed and manufactured sectional custom tray for a patient with microstomia: A case report.

Microstomia presents a challenge for the patient and dental provider. This report describes a partial digital workflow for the fabrication of a mandibular complete denture for a patient with microstomia. Computer-aided design and computer-aided manufacturing technology was utilized to 3D print a sectional custom tray with a unique design. The sectional custom tray was used to make a conventional border molded impression of the edentulous arch to fabricate a flexible complete mandibular denture for a 58-year-old female patient with scleroderma and microstomia. This treatment resulted in a successful prosthetic outcome and high patient satisfaction.

Under-Drilling versus Hybrid Osseodensification Technique: Differences in Implant Primary Stability and Bone Density of the Implant Bed Walls.

The goal of this study was to evaluate the effects of two implant bed preparation techniques on the implant primary stability (IPS) and the bone density of the implant site. We completed 40 implant bed osteotomies in pig ribs using two techniques: osseodensification (OD) plus under-drilling (UD) with universal osseodensification drills (Test A), and under-drilling alone with drills of the same implant system (Test B). Implants with a 4.1 mm diameter and 10 mm length were inserted, and the IPS was evaluated with three methods: (insertion torque (IT), periotest (PTV), and resonance frequency analysis (RFA). The bone density was evaluated using micro-computed tomography. ANOVA and Tukey's post-hoc test were used for comparison of the IPS values, and Kruskal-Wallis was used to evaluate the bone density. Statistical significance was set at p < 0.05. The tested B technique (UD) achieved a higher IPS compared to the Test A technique (OD + UD) for all the evaluation methods (p < 0.05). Bone density was higher at the apical and middle region in Test A compared to Test B and control sites (p < 0.05). We concluded that although the bone density increased with the hybrid OD technique with universal drills, implant beds prepared with UD using drills with geometry similar to that of the implant are more efficient at increasing IPS values.

Custom Nasal Septum Prosthesis Fabricated from a 3D-Printed Working Model: A Clinical Report.

This clinical report describes the treatment of a 47-year-old female patient with a nasal septum perforation. The treatment used a 2-piece magnetic custom prosthesis fabricated from a 3D-printed model. By using an existing medical CT scan to generate the printed working model, the number of clinical appointments was reduced. The workflow expanded the purpose of the radiologic images from simply diagnostic to include the prosthetic aspect of treatment.