scholarly journals Advances in Soft Denture Liners: An Update

2015 ◽  
Vol 16 (4) ◽  
pp. 314-318 ◽  
Author(s):  
Farouk Ahmed Hussein
Keyword(s):  
Color Stability ◽  
Acrylic Resin ◽  
Silicone Elastomers ◽  
Acrylic Polymers ◽  
Acrylic Resins ◽  
Implant Placement ◽  
Impression Materials ◽  
Recent Developments ◽  
Denture Liners

ABSTRACT Soft denture liners are used in complete and partial removable dentures to distribute functional loads homogeneously on the denture-bearing tissues. These materials are recommended in cases of irregular bone resorption, bony undercuts, thin atrophic mucosa, immediate prosthesis, healing after implant placement, and for patients with bruxism and xerostomia. The resilient lining materials can be categorized as plasticized acrylic resins or silicone elastomers. The plasticized acrylic resin comprises of acrylic polymers and copolymers, a liquid containing an acrylic monomer and plasticisers, such as ethyl alcohol and/or ethyl acetate responsible for preserving the material softness. The silicone elastomers, consisting of dimethylsiloxane polymers, with a chemical composition similar to that of the silicone impression materials devoid of leachable plasticisers, retain their elastic properties for prolonged periods. Most of the currently available materials have several disadvantages, including color stability, long-term resiliency, abrasion resistance, bond strength and porosity. Several modifications have been done recently to overcome of these disadvantages of the soft liners. The current review summarizes the recent developments in soft liners. How to cite this article Hashem MI. Advances in Soft Denture Liners: An Update. J Contemp Dent Pract 2015;16(4):314-318.

Long-term clinical evaluation of the color stability and stainability of acrylic resin denture teeth

2015 ◽  
Vol 113 (6) ◽  
pp. 628-635 ◽  
Author(s):  
Valentim Adelino Ricardo Barão ◽  
Erika Shiguematsu Ogawa ◽  
Amália Moreno ◽  
Marcelo Ferraz Mesquita ◽  
Alvin G. Wee ◽  
...  
Keyword(s):  
Clinical Evaluation ◽  
Color Stability ◽  
Acrylic Resin ◽  
Denture Teeth

A Study of the Interface between Resilient Denture Liners and Polymethylmethacrylate

1980 ◽  
Vol 9 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Wala M Amin ◽  
A M Fletcher ◽  
G M Ritchie
Keyword(s):  
Electron Microscope ◽  
Chemical Composition ◽  
Base Material ◽  
Acrylic Resin ◽  
Destructive Effect ◽  
Denture Base ◽  
Tissue Surface ◽  
Denture Liners ◽  
Scanning Electron

Four of the commonly used resilient denture lining materials were investigated, they were of different chemical composition, physical forms and processing cycles. Scanning electron microscope examinations of the interface between the liners and the regular acrylic resin base material were carried out in an attempt to assess the bonding of these materials to the denture base, and to evaluate the reliability of their use. The effect of water on the liner/denture base interface was also investigated, and the validity of roughening the tissue surface of the denture base prior to processing the liner was assessed. The findings point to the advisability of using the acrylic type of soft liners whenever resilient liners are indicated. Roughening the fitting surface of the denture base to which the resilient lining materials is to be applied has a weakening effect on the bond between the lining and the denture base. Long term exposure of the liners to water has a destructive effect. The infused water into the material leads to swelling and stresses build up at the denture base interface and these tend to promote distortion and reduction in bonding.

Color stability of long-term soft denture liners

1992 ◽  
Vol 68 (5) ◽  
pp. 836-838 ◽  
Author(s):  
J.L. Shotwell ◽  
M.E. Razzoog ◽  
A. Koran
Keyword(s):  
Color Stability ◽  
Denture Liners

scholarly journals The acrylic/montmorillonite nanocomposites for leather finishing

2020 ◽  
Author(s):  
Аnna Bondaryeva ◽  
Оlena Mokrousova
Keyword(s):  
Polymer Coating ◽  
Relative Elongation ◽  
Physical And Mechanical Properties ◽  
Acrylic Resin ◽  
Anionic Dyes ◽  
Acrylic Polymers ◽  
Elongation At Break ◽  
Acrylic Resins ◽  
Leather Finishing ◽  
Chromium Sulfate

Leather finishing is carried out by application of coatings that include polymer, pigment, solvents and any auxiliary products. The acrylic resins are employed in leather finishing to produce polymer film to create a uniform protective coating on the leather surface. To increase the operational properties of the polymer coating for leather finishing, it is proposed to use nanocomposites based on acrylic resin and modified dispersions of montmorillonite (AMC). The introduction of montmorillonite allows the polymer to be structured and provides improved physical and mechanical indexes of the leather coating. Acrylic polymers and colored modified dispersions of montmorillonite (CMDM) were used for the study. The colored montmorillonite was obtained by treating water dispersions of montmorillonite by sodium carbonate, basic chromium sulfate and anionic dyes. The AMC contained 1.5–2.0% montmorillonite of the dry polymer residues. The use of AMC enhances the physical and mechanical properties of the leather coating. It is shown that the use of temperature at 60°C for the formation of finishing coating enhances the structuring of the polymer matrix, which is confirmed by the 40 % increase in the tensile strength of films and the 10 % reduction in relative elongation at break.

scholarly journals Comparison of Fracture Resistance in Thermal and Self-Curing Acrylic Resins—An In Vitro Study

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1234
Author(s):  
António Sérgio Silva ◽  
Aurora Carvalho ◽  
Pedro Barreiros ◽  
Juliana de Sá ◽  
Carlos Aroso ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Research Work ◽  
Testing Machine ◽  
In Vitro Study ◽  
Dimensional Accuracy ◽  
Acrylic Resin ◽  
Thermosetting Resins ◽  
Acrylic Resins ◽  
The Difference

Thermal and self-curing acrylic resins are frequently and versatilely used in dental medicine since they are biocompatible, have no flavor or odor, have satisfactory thermal qualities and polishing capacity, and are easy and fast. Thus, given their widespread use, their fracture resistance behavior is especially important. In this research work, we comparatively analyzed the fracture resistance capacity of thermo and self-curing acrylic resins in vitro. Materials and Methods: Five prosthesis bases were created for each of the following acrylic resins: Lucitone®, ProBase®, and Megacryl®, which were submitted to different forces through the use of the CS® Dental Testing Machine, usually mobilized in the context of fatigue tests. To this end, a point was defined in the center of the anterior edge of the aforementioned acrylic resin bases, for which the peak tended until a fracture occurred. Thermosetting resins were, on average, more resistant to fracture than self-curable resins, although the difference was not statistically significant. The thermosetting resins of the Lucitone® and Probase® brands demonstrated behavior that was more resistant to fracture than the self-curing homologues, although the difference was not statistically significant. Thermosetting resins tended to be, on average, more resistant to fracture and exhibited the maximum values for impact strength, compressive strength, tensile strength, hardness, and dimensional accuracy than self-curing resins, regardless of brand.

scholarly journals Clinical long-term and patient-reported outcomes of dental implants in oral cancer patients

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Eik Schiegnitz ◽  
Lena Katharina Müller ◽  
Keyvan Sagheb ◽  
Lisa Theis ◽  
Vahide Cagiran ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Oral Cancer ◽  
Cancer Patients ◽  
Dental Implants ◽  
Survival Rates ◽  
Implant Survival ◽  
Implant Placement ◽  
Patient Reported ◽  
Oral Cancer Patients

Abstract Background and purpose The aim of this clinical study was to investigate the clinical long-term and patient-reported outcome of dental implants in patients with oral cancer. In addition, analysis of the influence of radiation therapy, timing of implant insertion, and augmentation procedures on implant survival was performed. Material and methods This retrospective study investigated the clinical outcome of 711 dental implants in 164 oral cancer patients, inserted by experienced surgeons of the Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Germany. Oral health-related quality of life (OHRQoL) was evaluated. Results Cumulative 5-year and 10-year implant survival rates for all included implants were 87.3% and 80.0%. Implants placed straight after ablative surgery (primary implant placement) and implants placed after completing the oncologic treatment (secondary implant placement) showed a comparable implant survival (92.5% vs. 89.5%; p = 0.635). Irradiation therapy had no significant influence on implant survival of secondary placed implants (p = 0.929). However, regarding implant site (native bone vs. augmented bone) and radiation therapy (non-irradiated bone vs. irradiated bone), implants inserted in irradiated bone that received augmentation procedures showed a statistically significant lower implant survival (p < 0.001). Patients reported a distinct improvement in OHRQoL. Conclusions Promising long-term survival rates of dental implants in patients after treatment of oral cancer were seen. In addition, patients benefit in form of an improved OHRQoL. However, bone augmentation procedures in irradiated bone may result in an impaired implants’ prognosis.

Review of Recent Developments in Surface Nanocrystallization of Metallic Biomaterials

Nanoscale ◽  
2021 ◽  
Author(s):  
Srijan Acharya ◽  
Satyam Suwas ◽  
Kaushik Chatterjee
Keyword(s):  
Human Body ◽  
Surface Characteristics ◽  
Metallic Materials ◽  
Short Term ◽  
Surface Nanocrystallization ◽  
Metallic Biomaterials ◽  
Recent Developments

Metallic materials are widely used to prepare implants for both short-term and long-term use in the human body. The performance of these implants is greatly influenced by their surface characteristics,...

scholarly journals Transalveolar nasal floor elevation and implant placement: Long term follow-up case report and description of the technique

2021 ◽  
pp. 100222
Author(s):  
Eduardo Anitua ◽  
Beatriz Anitua ◽  
Mohammad Hamdan Alkhraisat ◽  
Laura Piñas ◽  
Asier Eguia
Keyword(s):  
Case Report ◽  
Implant Placement ◽  
Nasal Floor ◽  
Long Term Follow Up

Effect of Interchanging Liquid Components of Two Auto-Polymerizing Orthodontic Acrylic Resins in their Flexural Properties

2014 ◽  
Vol 1025-1026 ◽  
pp. 797-802 ◽  
Author(s):  
Tassanaporn Saen-Isara ◽  
Surachai Dechkunakorn ◽  
Niwat Anuwongnukroh ◽  
Toemsak Srikhirin ◽  
Siriporn Tanodekaew
Keyword(s):  
Setting Time ◽  
Acrylic Resin ◽  
Flexural Properties ◽  
Acrylic Resins

Objective: To evaluate the effects of interchanging the liquid components of two commercially available orthodontic auto-polymerizing acrylic resin in their flexural properties, clarity and setting time

Enhanced Long-Term Color Stability of Teeth Treated with Hydrogen Peroxide and Non-Thermal Atmospheric Pressure Plasma Jets

2014 ◽  
Vol 11 (11) ◽  
pp. 1010-1017 ◽  
Author(s):  
Seoul Hee Nam ◽  
Hyun Wook Lee ◽  
Jin Woo Hong ◽  
Hae June Lee ◽  
Gyoo Cheon Kim
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Color Stability ◽  
Plasma Jets ◽  
Pressure Plasma
Sign in / Sign up

Export Citation Format

Share Document