التفاصيل البيبلوغرافية
| العنوان: |
Adhesive restoration of anterior endodontically treated teeth: influence of post length on fracture strength. |
| المؤلفون: |
Ramírez-Sebastià, Anaïs, Bortolotto, Tissiana, Cattani-Lorente, Maria, Giner, Lluis, Roig, Miguel, Krejci, Ivo |
| المصدر: |
Clinical Oral Investigations; Mar2014, Vol. 18 Issue 2, p545-554, 10p, 1 Black and White Photograph, 2 Diagrams, 4 Charts |
| مصطلحات موضوعية: |
INCISORS, FRACTURE strength, DENTAL enamel, DENTAL cements, GLASS fibers |
| مستخلص: |
Objectives: This study aims to evaluate the fracture resistance of endodontically treated anterior teeth restored with crowns made of composite or ceramic and retained without the use of a post (endocrowns) or with posts of 5 mm (short) and 10 mm in length (long). Material and methods: Forty-eight intact maxillary incisors were selected for the study. After endodontic treatment, the crowns were sectioned 2 mm coronally to the cementoenamel junction provided with a ferrule of 2 mm. The roots were randomly divided into six groups ( n = 8) according to the post length and type of coronary restoration. The crowns were fabricated with the chairside economical restoration of esthetic ceramics system. Group 1 was restored with a 10-mm glass fiber post, composite core, and a full-coverage ceramic crown (LPCer); group 2, with a 5-mm glass fiber post, composite core, and a full-coverage ceramic crown (SPCer); group 3, with a 10-mm glass fiber post, composite core, and a full-coverage composite crown (LPCpr); group 4, with a 5-mm glass fiber post, composite core, and a full-coverage composite crown (SPCpr); and groups 5 (EndoCer) and 6 (EndoCpr) were restored with ceramic and composite endocrowns, respectively. The teeth were then thermomechanically loaded in a chewing machine. After fatigue, the specimens were loaded to fracture. Data were analyzed with ANOVA and chi-square test. Mode of failure was defined as repairable or non-repairable. Results: Presence of post, post length, and crown material had no significant effect on the fracture resistance. Groups restored with endocrowns presented a higher number of repairable fractures in respect to the other groups. Conclusions: Presence of a post had no effect on the restorations' fracture strength. Clinical relevance: Although this in vitro study has some limitations in respect to its clinical relevance, the restoration of largely destroyed anterior teeth with the use of an endocrown or a short glass fiber post might have advantages over a large glass fiber post. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |