Evaluation of the Effect of Long-term Use of Three IntracanalMedicaments on the Radicular Dentin Microhardness andFracture Resistance: An in vitro study

Acta Stomatologica Croatica

A. Thirumal Raj¹  Ankita Dilip Amonkar²  Alessio Zanza³  Preeti Kore Doddwad⁴  Neha Sunil Dhaded⁴  Anand C. Patil⁴  Luca Testarelli⁵  Shivayogi M. Hugar⁶  Shilpa Bhandi⁷  Shankargouda Patil⁸ 

[1] Jazan University, Jazan, Saudi Arabia;Consultant Endodontist, Goa, India;DepartmentofMaxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia;Department of Conservative Dentistry and Endodontics, KAHER’s V.K. Institute of Dental Sciences, Belagavi, India;Department of Oral and Maxillofacial Sciences, Sapienza University, University of Rome, Italy;Department of Pedodontics and PreventivDentistry, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, India;Department of Restorative Dental Sciences, College of Dentistry;Zavod za oralnu patologiju i mikrobiologiju Stomatološkog fakulteta Sri Venkateswara, Chennai, Indija;

关键词: MeSH terms: Root Canal Filling Materials;    Dentine;    Hardness Tests;    Flexural Strength:Author keywords: TripleAntibiotic Paste;    Fracture Resistance;   

DOI  :  

来源: DOAJ

【 摘 要 】

Objectives: The aim of this research was to evaluate the effect of long-term use of three intracanal medicaments on the radicular dentin microhardness and fracture resistance. Material and methods: A chemomechanical preparation was done using the Protaper rotary instruments up to F3. Theteeth were stored in an incubator at 37°C at 100% humidity and were categorized in three groups byrandom allocation, namely: Triple Antibiotic Paste (TAP), Calcium hydroxide paste (Apexcal) and Ledermix. Following medicament application, the access openings of all teeth were sealed with 4 mmthickness of cavit. The samples were stored for periods of 1 week, 1 month and 3months. Two dentincylinders measuring 5mm and 3mm were obtained from each sample. The cervical third was used forfracture resistance and the middle third was used for micro hardness evaluation. The microhardnesstesting was done using a Knoop microhardness tester, and the fracture resistance testing was doneusing the universal testing machine. Results: Calcium hydroxide showed maximally negative effecton the physical properties of radicular dentin compared to TAP (p= 0.0100 at one month and Ledermix (p=0.0001 at one month ). With an increase in the application time, there was an increased deterioration in the physical properties of radicular dentin. Conclusion: Long-term placement of calciumhydroxide, Triple Antibiotic Paste, and Ledermix (p= 0.0001at 3 months) significantly affects the microhardness and fracture resistance of radicular dentin.

【 授权许可】

Unknown