Evaluation of stress distributions in endodontically treated anterior incisors under occlusal and trauma-induced forces following various restoration treatments: A finite element analysis

IF 2.3 3区 医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
Elifnur Güzelce Sultanoğlu, Bahar Başak Kızıltan Eliaçık, Büşra Keleş Eroğlu, Banu Çiçek Tez
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Abstract

Background

The aim of this study was to calculate the stress distribution of fiberglass post associated with resin composite crown restoration and fiberglass posts with zirconia restorations in mature and immature endodontically treated central maxillary incisor under various loading conditions.

Materials and Methods

The study created six different study models in a virtual environment: healthy mature maxillary central teeth, intact immature maxillary central teeth, mature maxillary central teeth with fiberglass post associated with resin composite crown restoration, immature maxillary central teeth with fiberglass post associated with resin composite crown restoration, mature maxillary central teeth with fiberglass posts and zirconia restoration, and immature maxillary central teeth with fiberglass posts and zirconia restoration. Loading conditions simulating mastication, trauma, and bruxism were applied to each of the models at different angles and amounts. The von Mises and the maximum and minimum principal stress values in tooth structures (dentin) and support structures (bone, PDL) and materials were observed using finite element stress analysis.

Results

The highest stress values in the tissue and the restoration structure were observed for masticating force and crowns rehabilitated with zirconia restorations. None of the compared loading conditions and restorations showed destructive stress values on periodontal ligament or bone.

Conclusion

The mature and immature endodontically treated central maxillary incisors can be better rehabilitated using fiberglass post associated with resin composite crown restoration and may be preferred to zirconia restorations in order to reduce the stresses on the surrounding tissues and teeth. However, further clinical studies are needed to fully explore this topic.

评估牙髓治疗后的前切牙在各种修复治疗后的咬合力和创伤诱发力作用下的应力分布:有限元分析。
背景:本研究的目的是计算成熟和未成熟牙髓治疗上颌中切牙树脂复合冠修复体玻璃纤维桩和氧化锆修复体玻璃纤维桩在不同加载条件下的应力分布:研究在虚拟环境中创建了六个不同的研究模型:健康的成熟上颌中切牙、完整的未成熟上颌中切牙、成熟上颌中切牙玻璃纤维桩与树脂复合冠修复体、未成熟上颌中切牙玻璃纤维桩与树脂复合冠修复体、成熟上颌中切牙玻璃纤维桩与氧化锆修复体,以及未成熟上颌中切牙玻璃纤维桩与氧化锆修复体。模拟咀嚼、外伤和磨牙的加载条件以不同的角度和量加在每个模型上。通过有限元应力分析,观察了牙齿结构(牙本质)和支持结构(牙槽骨、PDL)及材料的冯米塞斯应力、最大和最小主应力值:结果:在咀嚼力和氧化锆修复冠修复时,牙体组织和修复结构中的应力值最高。结论:结论:成熟和不成熟的上颌中切牙根管治疗后,使用玻璃纤维桩联合树脂复合冠修复可以获得更好的修复效果,而且可能比氧化锆修复更好,以减少对周围组织和牙齿的应力。不过,要全面探讨这一问题,还需要进一步的临床研究。
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来源期刊
Dental Traumatology
Dental Traumatology 医学-牙科与口腔外科
CiteScore
6.40
自引率
32.00%
发文量
85
审稿时长
6-12 weeks
期刊介绍: Dental Traumatology is an international journal that aims to convey scientific and clinical progress in all areas related to adult and pediatric dental traumatology. This includes the following topics: - Epidemiology, Social Aspects, Education, Diagnostics - Esthetics / Prosthetics/ Restorative - Evidence Based Traumatology & Study Design - Oral & Maxillofacial Surgery/Transplant/Implant - Pediatrics and Orthodontics - Prevention and Sports Dentistry - Endodontics and Periodontal Aspects The journal"s aim is to promote communication among clinicians, educators, researchers, and others interested in the field of dental traumatology.
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