دورية أكاديمية
أعرض في EDS

CAD/CAM leucite-reinforced glass-ceramic for simulation of attrition in human enamel in vitro.

التفاصيل البيبلوغرافية
العنوان: CAD/CAM leucite-reinforced glass-ceramic for simulation of attrition in human enamel in vitro.
المؤلفون: Almejrad L; Department of Prosthodontics, Centre for Oral, Clinical & Translational Sciences, King's College London, Faculty of Dentistry, Oral and Craniofacial Sciences, Guy's Hospital, London SE1 9RT, UK; King Saud University, Collage of Dentistry, Prosthetic Dental Science Department, Riyadh, Saudi Arabia., Almansour A; Department of Prosthodontics, Centre for Oral, Clinical & Translational Sciences, King's College London, Faculty of Dentistry, Oral and Craniofacial Sciences, Guy's Hospital, London SE1 9RT, UK; King Sattam Bin Abdulaziz University, College of Dentistry, Al-Kharj, Saudi Arabia., Bartlett D; Department of Prosthodontics, Centre for Oral, Clinical & Translational Sciences, King's College London, Faculty of Dentistry, Oral and Craniofacial Sciences, Guy's Hospital, London SE1 9RT, UK., Austin R; Department of Prosthodontics, Centre for Oral, Clinical & Translational Sciences, King's College London, Faculty of Dentistry, Oral and Craniofacial Sciences, Guy's Hospital, London SE1 9RT, UK. Electronic address: upert.s.austin@kcl.ac.uk.
المصدر: Dental materials : official publication of the Academy of Dental Materials [Dent Mater] 2024 Feb; Vol. 40 (2), pp. 173-178. Date of Electronic Publication: 2023 Nov 10.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Science Country of Publication: England NLM ID: 8508040 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0097 (Electronic) Linking ISSN: 01095641 NLM ISO Abbreviation: Dent Mater
أسماء مطبوعة: Publication: 1998- : Kidlington, Oxford, UK : Elsevier Science
Original Publication: Copenhagen : Munksgaard, c1985-
مواضيع طبية MeSH: Dental Porcelain* , Tooth Attrition* , Acrylic Resins* , Aluminum Silicates* , Silicon Dioxide*, Humans ; Ceramics ; Dental Materials ; Composite Resins ; Dental Enamel ; Materials Testing ; Surface Properties ; Computer-Aided Design
مستخلص: Objective: Investigate attrition simulation using CAD/CAM leucite-reinforced glass-ceramic antagonists on occlusal vs. buccal enamel.
Methods: Three dental materials with known wear rates (resin-modified glass-ionomer, micro-filled, and fine particle composites) validated the wear simulator (CAD/CAM glass-ceramic antagonists, 200 cycles, 80 N load, deionised water irrigation, 0.7 mm sliding movement). Following this, human molars were sectioned into paired occlusal and buccal polished samples (n = 8/gp). Exposed 1.5 mm Ø enamel areas were subjected to attritional wear with and without pre-immersion in citric acid (5 min, 0.3%, pH 3.8). Profilometry measured step-height enamel wear and surface microhardness at different depths was calculated using Vickers indentation at 0.1 N and 0.5 N loads.
Results: Dental material wear using the CAD/CAM antagonists showed consistency with previous data: mean (SD) resin-modified glass ionomer material loss of 177.77 (16.89) µm vs. 22.15 (1.30) µm fine particle hybrid composite resin wear vs. 13.63 (1.02) µm micro filled composite resin wear (P < 0.001). The coefficient of variation was less than 10%. Following validation, enamel sample wear was significantly increased when attrition was introduced (P < 0.001) independent of buccal vs. occlusal sample location (P < 0.05). Attrition resulted in occlusal wear of 26.1 ± 4.5 µm vs. buccal 26.3 ± 1.2 µm and attrition/erosion resulted in occlusal wear of 26.05 ± 4.46 µm vs. buccal 25.27 ± 1.16 µm. Whereas erosion-alone resulted in occlusal wear of 1.65 ± 0.13 µm and buccal 1.75 ± 0.03 µm. Microhardness testing at different loads revealed significantly greater hardness reductions in occlusal enamel vs. buccal enamel for 0.1 KgF indentations (P < 0.001) whereas in contrast 0.5 KgF indentations showed no differences.
Significance: Wear simulation with CAD/CAM glass ceramic antagonists produced consistent wear in dental materials and human enamel, regardless of enamel surface origin. Lighter (0.1 KgF) hardness testing of occlusal vs. buccal origin revealed damage to the mechanical integrity of the superficial worn enamel.
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest.
(Copyright © 2023. Published by Elsevier Inc.)
فهرسة مساهمة: Keywords: Attrition; CAD/CAM; Ceramic; Dental materials wear; Enamel
المشرفين على المادة: 85422-94-2 (Glass ceramics)
12001-21-7 (Dental Porcelain)
1302-34-7 (leucite)
0 (Dental Materials)
0 (Composite Resins)
0 (glass ionomer)
0 (Acrylic Resins)
0 (Aluminum Silicates)
7631-86-9 (Silicon Dioxide)
تواريخ الأحداث: Date Created: 20231111 Date Completed: 20240214 Latest Revision: 20240214
رمز التحديث: 20240214
DOI: 10.1016/j.dental.2023.11.004
PMID: 37951749
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-0097
DOI:10.1016/j.dental.2023.11.004