An in vitro trial on the effect of arch form on connector size requirements in long span anterior zirconia fixed dental prostheses.

Purpose: To test the fracture resistance of maxillary canine to canine fixed partial denture with four missing incisors, with increasing anterior-cantilevers of the pontics and varying connector sizes.

Materials And Methods: Two 3D-printed titanium alloy (Ti6Al4V) models mimicking a maxillary canine to canine fixed partial denture (FPD) with four pontics replacing the incisors were used as master models. Zirconia FPDs were digitally designed and milled with two different connector sizes (9 and 12 mm ) each with three different anterior cantilevers (7, 10, and 13 mm) accounting for 6 test groups.

Guided protocol for indirect fabrication of a custom provisional restoration prior to immediate implant surgery in the esthetic zone.

Background: Delivery of a high-quality provisional restoration at a maxillary anterior immediate implant site enhances patient-centered outcomes and promotes development of favorable hard and soft tissue architecture. The purpose of this report is to present a protocol relying upon compatible guided surgery and laboratory systems for fabrication of a custom provisional crown prior to immediate implant surgery in the esthetic zone.

Methods And Results: A female patient, aged 33 years, presented to the Army Postgraduate Dental School, Fort Gordon, Georgia, with an unfavorable prognosis for tooth #9.

Clinical Advantages of Angled Screw Access Channels for Implant-Supported Restorations in the Esthetic Zone.

Introduction: Retained cement following delivery of an implant-supported crown is strongly associated with peri-implant mucositis and peri-implantitis, and screw retention is a strategy for avoiding this problem entirely. In the esthetic zone, screw retention compromises esthetics unless the screw access in the crown is concealed to the palatal of the incisal edge. To avoid positioning the implant platform excessively toward the palate, practitioners can design an angled screw access channel in the crown.