Load-Bearing Capacity of Incisors Restored Using Fiber-Reinforced Composite Post-Core Systems

被引:0
作者
Uchikura, Keiichiro [1 ]
Garoushi, Sufyan [2 ,3 ]
Nagata, Kohji [1 ,4 ]
Vallittu, Pekka K. [2 ,3 ,5 ]
Wakabayashi, Noriyuki [1 ]
Lassila, Lippo [2 ,3 ]
机构
[1] Tokyo Med & Dent Univ, Grad Sch Med & Dent Sci, Adv Prosthodont, Oral Hlth Sci, Tokyo 1138510, Japan
[2] Univ Turku, Dept Biomat Sci, Turku 20014, Finland
[3] Univ Turku, Inst Dent, Turku Clin Biomat Ctr, Turku 20014, Finland
[4] Asclapia Med & Dent Inst, Tokyo 1568506, Japan
[5] Wellbeing Serv Cty Southwest Finland, Turku 20521, Finland
关键词
incisor; fiber composite; endodontic post; fracture resistance; ENDODONTICALLY TREATED INCISORS; VITRO FRACTURE-RESISTANCE; MECHANICAL PERFORMANCE; FATIGUE RESISTANCE; ANTERIOR TEETH; BOND STRENGTH; POSTS; FERRULE; RESTORATION; GLASS;
D O I
10.3390/dj13030125
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: This study aimed to analyze the load-bearing performance of upper incisors and evaluate the curing of the luting polymer composite at various depths within the canal. Methods: A total of one hundred maxillary central incisors (10 groups, n = 10/group) were subjected to various restorative techniques. Approach A used Gradia Core for post-core and crown; Approach B employed prefabricated fiber posts (4 mm or 8 mm) with Gradia for luting and core build-up; Approach C used short-fiber composite (everX Flow) for post-core build-up; and Approach D used fiber posts with everX Flow for luting and core build-up. Restorations underwent cyclic fatigue (40,000 cycles at 95 N) and quasi-static fracture testing. Surface hardness of luting polymer composites was also measured. Results: Data showed that restorations with additional fiber posts (Approaches B and D) had significantly higher load-bearing capacity (p < 0.05), while post material and length had no significant impact (p > 0.05). Short-fiber composite as luting and core material (Approach D) enhanced load-bearing performance compared to Gradia-based restorations (Approach B, p < 0.05). Conclusions: The use of short-fiber composite as both the post luting and core material in restoring compromised incisors, along with a conventional fiber post, demonstrated favorable results in terms of load-bearing capacity.
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页数:15
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