Aging and Fracture Resistance of Screw-Retained Implant-Supported Molar Crowns Fabricated from Lithium Disilicate Containing Virgilite.

IF 2.1 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE International Journal of Prosthodontics Pub Date : 2024-08-23 DOI:10.11607/ijp.8369

Angelika Rauch, Alois Schmid, Michael Benno Schmidt, Anne Schmutzler, Sebastian Hahnel, Martin Rosentritt

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Abstract

Purpose: To investigate the aging and fracture resistance of screw-retained implant-supported single crowns (iSCs) fabricated from lithium disilicate containing virgilite (VLD).

Materials and methods: iSCs were fabricated from VLD (CEREC Tessera, Dentsply Sirona) and lithium disilicate (control, n = 8; IPS e.max CAD, Ivoclar) and bonded to a Ti-base abutment. VLD crowns were luted either with (VLDc, n = 8) or without (VLDw, n = 8) a coupling agent. iSCs were cleaned, sterilized, and screw-retained on implants. Fracture force was determined after thermal cycling and mechanical loading (TCML).

Results: All crowns survived TCML. No significant differences in mean fracture forces were identified between VLDc (1,583 N), VLDw (1,694 N), and control (1,797 N; P = .639 ANOVA, P = 1.000 Bonferroni).

Conclusions: Screw-retained iSCs fabricated from VLD provide acceptable stability, which is independent on the usage of a coupling agent for bonding to Ti-base abutments and sterilization.

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用含蛭石的二硅酸锂制造的螺钉固位种植体支承磨牙冠的抗老化和抗断裂性能。

材料和方法：用VLD（CEREC Tessera，Dentsply Sirona公司）和二硅酸锂（对照组，n =；8；IPS e.max CAD，Ivoclar公司）制作iSCs，并将其粘结到钛基台上。VLD牙冠使用耦合剂（VLDc，n =；8）或不使用耦合剂（VLDw，n =；8）。热循环和机械加载（TCML）后测定折断力：结果：所有牙冠都经受住了热循环和机械加载。VLDc（1,583 N）、VLDw（1,694 N）和对照组（1,797 N；P = .639 ANOVA，P = 1.000 Bonferroni）之间的平均断裂力无明显差异：结论：用VLD制作的螺钉固位iSC具有可接受的稳定性，这与使用耦合剂与钛基台粘接和消毒无关。

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来源期刊

International Journal of Prosthodontics 医学-牙科与口腔外科

CiteScore

3.20

自引率

4.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Official Journal of the European Association for Osseointegration (EAO), the International College of Prosthodontists (ICP), the German Society of Prosthodontics and Dental Materials Science (DGPro), and the Italian Academy of Prosthetic Dentistry (AIOP) Prosthodontics demands a clinical research emphasis on patient- and dentist-mediated concerns in the management of oral rehabilitation needs. It is about making and implementing the best clinical decisions to enhance patients'' quality of life via applied biologic architecture - a role that far exceeds that of traditional prosthetic dentistry, with its emphasis on materials and techniques. The International Journal of Prosthodontics is dedicated to exploring and developing this conceptual shift in the role of today''s prosthodontist, clinician, and educator alike. The editorial board is composed of a distinguished team of leading international scholars.