Effects of Addition of Aluminum Oxide on Flexural Strength and Hardness of Acrylic Resins
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 3
Abstract
Purpose: Acrylic dentures frequently fracture during service due totheir poor strength characteristics. The aim of this study was to evaluate the effects of adding 5%, 10% and 15% aluminum oxide powder on the flexural strength, surface hardness of a conventional heat-polymerized acrylic resin. Materials and methods: One of the commonly used conventional heat cure denture base resin (DPI) and high impact heat cure denture base resin(lucitone) with incorporation of three different percentage of aluminum oxide concentration was studied in 4 groups of 10 samples each. A standard mould measuring 65 x 10 x 3mm3 (ISO 1567 standard) was obtained for the fabrication of 40 specimens that were divided into 4groups; group-A was unmodified denture base resin (Control group), group- B, group-C and group-D were modified denture base resin with 5%, 10%and 15% by wt. aluminum oxide powder respectively.All specimens were stored in distilled water at 37º C for 7 days. The flexural strength of thespecimens was measured using 3-point bending test in a Universal Testing Machine.Hardness testing was conducted using shore hardness tester. Conclusion: Reinforcement of the conventional heat-cured acrylic resin(DPI) and high impact heat cured acrylic resin(LUCITONE) with 15% by wt.% Aluminum oxide powder significantly increased its flexural strength and hardness with no adverse effects.
Authors and Affiliations
Dr. Lavanya Pentapati, Dr. K. Srinivas, Dr. Y Ravi Shankar, Dr. V. Swetha, Dr. M. Hari krishna
Keywords
Related Articles
- EP ID EP592719
- DOI 10.9790/0853-1603030106
- Views 58
- Downloads 0
Role of UST in Physiatric Management of Primary OA Knee.
Objectives:Toevaluate the effect of UST toreduce Swelling, control pain and subsequently improving tenderness,Range of Motion, walk time in OA Knee. Study Design – Prospective randomized controlled parallel group study....
A Study of Relationship between Great Saphenous Vein and Superficial External Pudendal Artery and Duplication of Great Saphenous Vein in South Indian Population [Original Article]
The varicose veins are a relatively common condition of the lower limb for which surgery is the main modality of treatment. An anomaly of the Sapheno femoral junction should always be taken into consideration in order to...
Evaluation of Upper Incisor Position and Its Comparison with Lip Posture in Orthodontically Treated Patients.
Introduction: Harmony And Balance Between The Facial Features Is An Integral Part OfOrthodontist’s Responsibility. Incisor Position Plays An Important Role In Determining Lip Posture Aim And Objectives: The Aim Of The St...
Gorlin-Goltz syndrome – a case report
Gorlin-Goltz syndrome or basal cell nevus bifid rib syndrome is a genetic disorder characterized by the presence of multiple odontogenic keratocysts. Odontogenic keratocyst (OKC) is a developmental cyst of epithelial ori...
Intramasseteric Cavernous Haemangioma: A Case Report.
Intramuscular haemangiomas (IMHs) of masseter muscle are extremely rare in head and neck region and often misdiagnosed as parotid tumours. We report a case of a 40 yrs old female who presented with a progressive non tend...