Garcia-Gazaui Sabrina, Razzoog Michael, Sierraalta Marianella, Saglik Berna
Resident, Department of Biologic and Material Sciences, Division of Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Mich.
Director, Department of Biologic and Material Sciences, Division of Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Mich.
J Prosthet Dent. 2015 Nov;114(5):621-4. doi: 10.1016/j.prosdent.2015.06.007. Epub 2015 Sep 4.
Dental implant restorations may be either screw-retained or cemented onto an abutment. While each method has its advantages and disadvantages, cemented restorations are commonly used in the maxillary arch, usually because of esthetic concerns. Available bone in the anterior maxilla dictates the placement of the implant, which may result in a facially positioned screw-access opening. Still, a growing volume of literature states that periimplant soft tissues respond more favorably to screw-retained crowns than cement-retained crowns. This clinical report outlines a treatment with a new method of fabricating a custom abutment-crown combination for a screw-retained restoration. The technique allows the channel for the screw to be placed at an angle other than parallel to the implant body. In this case, the practitioner may choose either a screw-retained or cement-retained implant restoration, where previously only a cemented restoration was possible.
牙种植体修复体可以是螺丝固位的，也可以粘结在基台上。虽然每种方法都有其优缺点，但粘结修复体常用于上颌牙弓，通常是出于美观考虑。上颌前部可用骨决定了种植体的位置，这可能导致螺丝接入开口位于面部。然而，越来越多的文献表明，种植体周围软组织对螺丝固位冠的反应比对粘结固位冠更有利。本临床报告概述了一种使用新方法制作定制基台-冠组合以进行螺丝固位修复的治疗方法。该技术允许螺丝通道以与种植体主体不平行的角度放置。在这种情况下，从业者可以选择螺丝固位或粘结固位的种植体修复体，而以前只能进行粘结修复。
