Evaluation of Tensile Bond Strength of Heat‑Polymerized Acrylic Soft Liners with Various Surface Pre‑Treatment of Denture Bases: An In Vitro Study
Journal Title: Indian Journal of Dental Advancements - Year 2018, Vol 10, Issue 2
Abstract
Background: Resilient liners are prone to bond failure with acrylic resin base, creating an environment for bacterial growth and accelerated break down of soft liner, resulting in a deteriorating prosthesis. Aims and Objectives: The purpose of the present study is to evaluate the efficacy of mechanical, chemical, and mechanochemical pre-treatment of denture base resin on the tensile bond strength of heat-cured permanent resilient liners. Materials and Methods: A total of 320 cuboidal blocks (40 mm ×x 10 mm x 10 mm) of heat-polymerized acrylic resin (Trevalon) were made which were equally grouped into Permasoft (Group 1) and Acrasoft (Group 2). Each group was further subdivided into four subgroups based on surface pre-treatment of denture base, namely: Control, chemical (methyl methacrylate [MMA]), mechanical (sandblasting with 250 µ aluminum oxide particles), and mechanochemical (sandblasting followed by MMA). A 3-mm thick resilient denture liner was packed between two resin blocks. Then, each subgroup was divided into two test groups ( n = 10) for testing tensile bond strength (using universal testing machine) after 24 h and 30 days post-immersion in artificial saliva. One-way ANOVA and Tukey test were used for data analysis. Results: The tests resulted in greater tensile bond strength for Acrasoft group compared to Permasoft at both 24 h and 1 month. Between the two time periods, it was more for 24 h group. Among all methods, mechanical method resulted in superior tensile bond strength. Conclusion: This in vitro study concluded that all the tested pre-treatment methods showed better tensile bond strength than control group, maximum with mechanical group.
Authors and Affiliations
Hari kumar Mempally, Jayasree Komala, Sri Guru Mangala Deepti Ganji
Management of Epulis Fissuratum Using Cryosurgery - A Case Report
The aim of the present case report is to present a case showing the treatment of Epulis fissuratum in relation to an ill-fitting denture treated with nitrous oxide cryosurgery. Epulis fissuratum associated with an ill-fi...
New approach of temporary aesthetic rehabilitation after anterior tooth loss in a juvenile patient
Intrusive luxation (intrusion) is displacement of the tooth into the alveolar bone along the long axis of the tooth and is accompanied by comminution or fracture of the alveolar sockets. External root resorption is one o...
An interesting case of strawberry shaped gingival overgrowth in a patient with deep anxiety and severe trepidation to medical treatment
Peripheral ossifying fibroma though not a new entity, is an issue of concern primarily if it has an impact on the esthetic appearance and phonetics. A 55 year old female patient presented to the department of Periodontic...
HPV Induced Oropharyngeal Carcinoma - A critical review
Oral cancer is the most frequent cancer of the head and neck region and is one of the common causes of mortality. The effect of etiological factors such as tobacco and alcohol consumption in its causation is well known,...
An Update Review of Animal Models For Experimental Periodontal Diseases
Animal models and cell cultures have contributed new knowledge in biological sciences, including Periodontology. Although cultured cells can be used to study physiological processes that occur during the pathogenesis of...