Different Types Of Surface Treatment Research Articles

Evaluation of shear bond strength and translucency of zirconia-reinforced lithium silicate and lithium disilicate: An in vitro study.

To analyze the effect of various surface treatment protocols on shear bond strength between the ceramic and resin cement (RC) and influence of zirconia on the translucency of LD as compared to zirconia-reinforced lithium silicate (ZLS). In-Vitro Study. Specimens (14 mm × 12 mm × 2 mm) (n = 135) and (14 mm × 12 mm × 1 mm) (n = 45) of ZLS computer-aided design/computer-aided manufacturing glass ceramic block and LD were fabricated, respectively. All the ZLS specimens were crystallized and were tested for the translucency parameter and ceramic-resin shear bond strength. Two different types of surface treatment were used on the ZLS and LD samples. The specimens were treated using the hydrofluoric acid (HF) etching or air abrasion with diamond particles (DPs). The specimens were then bonded using self-adhesive RC to a composite disc of 10 mm and thermocycling was performed. A universal testing machine was used to evaluate ceramic-resin shear bond strength after 24 h. The translucency of the specimens was evaluated using the spectrophotometer by calculating the difference in color between the readings over a black background and a white background. Data were statistically analyzed using the independent sample t-test and analysis of variance with Bonferroni's correction and comparison was made between the specimens. Independent sample t-test demonstrated statistically significantly higher translucency for group ZLS (61.44 ± 22) as compared to group LD (20.16 ± 8.39) (P < 0.001). Group ZLS showed statistically significant higher shear bond strength when surface treatment using HF or air abrasion with synthetic DPs was performed as compared to untreated group (3.58 ± 0.45) (P < 0.001). Moreover, air abrasion group (16.79 ± 2.11 megapascal [MPa]) demonstrated statistically significant higher shear bond strength as compared to HF etched group (8.25 ± 0.30 MPa) (P < 0.001). Furthermore, statistically significant higher shear bond strength was noted when air abrasion was done for group ZLS (16.79 ± 2.11 MPa) as compared to group LD (10.82 ± 1.92 MPa) (P < 0.001). However, on surface treatment with HF, a statistically significantly lower shear bond strength was noted for group ZLS (8.25 ± 0.30 MPa) as compared to group LD (11.29 ± 0.58 MPa) (P = 0.001). ZLS demonstrated higher translucency compared to LD restorations. DP abrasion of ZLS is recommended to achieve higher shear bond strength between the ceramic and RC.

Effect on the mechanical properties of different types of surface treatment on sulfonated Peek - An In Vitro Study

Introduction - Thermoplastic polymers have many potential uses in medicine and dentistry as an alternative to the commonly used titanium. Since the 1980s, polyaryletherketones (PAEKs) have been increasingly employed as biomaterials for trauma, orthopedic, and spinal implants. Due to several advantages of these materials, metal-free restorations are performing an important role in current medical therapies. PEEK is biologically inert and various surface modifications are given to increase its osseointegration potential of PEEK, Acid etching is the most simple and cost effective method of treatment. The aim of this study is to evaluate the surface roughness and wettability of 2 different acid etching techniques of PEEK samples - Magnetic stirring and ultrasonic. Material and methods - PEEK samples thicknesses of 2 mm and diameters of 15 mm was used in the study and the sulfonation procedure was done magnetically and ultrasonically for 6 mins and samples were rinsed with acetone for 10 mins, washed with deionized water for 10 mins and finally dried at 37°C. The results of the study were subjected to statistical analysis in SPSS software version 23.0. Independent t test was performed for the parameters. Results - when comparing 2 groups magnetic stirred sulfonated PEEK (MSPEEK) and Ultrasonic PEEK (USPEEK) results showed statistically significant difference present. (P &lt; 0.05) in surface roughness and in wettability no significant difference is seen (P &gt; 0.05). Conclusion - The literature suggests that PEEK offers an alternative to titanium, especially in cases of orthopedics and trauma. Its properties make it an interesting material in Dental implantology to be performed with CAD-CAM. Further studies are required to obtain sufficient scientific evidence to enable its uses as a permanent material.

Protective chromate-free conversion coatings on AMg6 aluminum alloy with different types of surface treatment

Protective chromate-free conversion coatings on AMg6 aluminum alloy with different types of surface treatment

Comparative evaluation of adhesion of glass fiber post to the root dentin after surface treatment of post and using universal bonding agent: An in vitro study.

The purpose of the study is the evaluation and comparison of surface roughness and bond strength of glass fiber post (GFP) after different types of surface treatment and the application of a universal bonding agent. Forty GFPs were divided into four groups based on surface treatment: Group I, silane coupling agent application for 60 s; Group II, air abrasion with 30 μm silicon dioxide powder particles in 2.5 bar pressure from 2 cm distance for 10 s, followed by silane coupling agent application; Group III, 9% hydrofluoric acid application for 10 s, rinsed and air-dried, followed by silane coupling agent application; and Group IV, silane coupling agent application, followed by universal bonding agent application. Surface roughness evaluation is done by a profilometer. All posts were cemented in the root of the maxillary central incisor with resin cement. After that, root was placed in an acrylic mold, and the external end part of the post was mounted on another acrylic mold. Pull-out bond strength was measured by a universal testing machine. Highest surface roughness and bond strength values were found in Group II. Pretreatment of GFP increases the surface roughness of post as well as bond strength of post to root dentin. There is a correlation between surface roughness and bond strength. However, the use of only universal bonding agent also showed comparable pull-out bond strength of GFP, which means only use of universal bonding agent also a new alternative as pretreatment of GFP and helps in increase in bond strength.

A literature review on different types of surface treatment in implants

In a present scenario, dental implants are becoming very popular in day to day practice and is one of the most promising treatment modality in the procedure of replacement of missing tooth or teeth in the oral cavity. There are various factors over which the success of implant therapy depends, such as local as well as systemic factors, like age, bone availability in terms of height and width, bone density, any local infection present, systemic disease, and some other factors like implant design, implant surface, which plays an important role in the process of osseointegration.

Improvement of Steels' Corrosion Resistance in Liquid Lead and Lead-Bismuth by Coatings—Review

Abstract Heavy liquid metal (HLM) cooled systems are under wide investigation and development. The technology needs to study the materials corrosion, which has a different progress than corrosion caused by aqueous media. Improvement of the corrosion resistance can be achieved by alloying the bare material, but the degradation of steels continues with less or more intensity. Deposition of protective barrier may reduce the metals dissolution and diffusion of liquid lead into the steel substrate. Different types of surface treatment and coatings composition were evaluated to find out the most convenient solution for the steel's protection.

Comparison of Surface Treatments of Endosteal Implants in Ovariectomized Rabbits.

The aim of this work was to evaluate osseointegration of endosteal implants with two different surface treatments at early stages (~3 weeks) in the tibia of healthy and ovariectomized rabbits. The study comprised 10 adult New Zealand female rabbits (Oryctolagus cuniculus; 6 months and 3.0 ± 0.5 kg). Five animals were subjected to bilateral ovariectomy to mimic osteoporotic-like conditions, and the remaining rabbits (n = 5) served as the healthy control group. After 3 months, specimens from the ovariectomized and control groups were subject to implant placement in both tibiae, using two different types of surface treatment. A total of 36 implants were placed, n = 18 acid-etched and n = 18 anodized. After 3 weeks, euthanasia of the animals was performed, and samples were obtained for processing. Bone-to-implant contact and bone area fraction occupancy were quantified to evaluate the osseointegration parameters around the implant surface and within the thread area, respectively, and nanoindentation tests were performed to determine elastic modulus and hardness of the new bone. Both analyses were performed on the entire implant (total), as well as individually within the cortical and bone marrow cavity area. All animals were evaluated with no signs of infection or postoperative complications. The total bone-to-implant contact and bone area fraction occupancy results, independent of surface treatment, yielded significant differences between the ovariectomized and control groups (P = .002 and P < .001, respectively). In the marrow cavity, analyzing the surface treatments independently as a function of bone condition, the only differences detected were in the anodized treatment (P = .04). Regarding the elastic modulus, differences were detected only with the anodized implants between the ovariectomized and control groups (P = .015). At 3 weeks after implant placement, there were better osseointegration values of the implants in the healthy control group compared with the ovariectomized group independent of surface treatment. Also, specifically in the medullary region of the rabbit tibia, the acid-etched implants had more uniform osseointegration values in conditions of low-quality bone in comparison to the anodized implants, histomorphometrically and biomechanically.

Performance and failure analysis of carbon fiber-reinforced polymer (CFRP) strengthened reinforced concrete (RC) beams

At present, the strengthening and retrofitting of reinforced concrete (RC) beams using carbon fiber-reinforced polymer (CFRP) are receiving extensive attention. The use of strengthening technique for RC beams vary according to purpose. In general, this technique aims to increase load-carrying capacity, either through flexural or shear strengthening. The present study aims to investigate the load–deflection response of CFRP-strengthened RC beams through experimentation with five various strengthening configurations and two different types of surface treatment. The RC beams that were tested in this work were small scale. Results indicate that compared with control beams, CFRP-strengthened beams notably reinforced ultimate load and deflection, as well as ductility, because of the stiffness and grip provided by CFRP. Among the five configurations, the continuous U-wrapping and strip wrapping systems were proven effective for strengthening. A close interaction between internal stirrups and external CFRP strips, which will negatively affect the overall strength of the beams if the reinforcements were placed simultaneously along a similar section of the beam. The failure pattern of the strengthened beams considerably depends on strengthening configuration and internal steel reinforcement, which control the ultimate effectiveness of strengthening. In addition, the ultimate capacity of the beams was predicted in accordance with the ACI 440.2R-17 guidelines and was finally compared with the experimental ultimate loads of the CFRP-strengthened beams. Experimental results show that the predicted values were extremely conservative.

Strength evaluation of bolted connections with slotted holes in non‐structural components

ABSTRACTIn the bolted connections of the non‐structural exterior wall to structural frames, slotted holes are often used to improve the workability. In Japan, in case the slotted holes are used in the bolted connections of structural frame, a reduction factors according to European Recommendations for bolted connections in structural steel work(1) have to be employed to reduce the slip strength of the connections. However, the strength reduction ratio equals to 1.0 when the major axis direction and the stress direction of the slotted holes are orthogonal; thus, the strength reduction factor is not considered to be substantial in many cases. Furthermore, these provisions are not employed for connections of non‐structural components to structural frames.In this study, a tension test of bolted connection with slotted hole was carried out to evaluate the slip coefficient and confirm the strength reduction. In order to consider influences of the surface treatment of the specimen on slip proof stress, five different types of surface treatment are considered in the test, which are hot dip galvanizing with and without antirust processing, electroplated zinc colored chromate coating with and without antirust coating, and stainless steel. From the test results, it is found that the slip strength ratio of the bolted connection with the slotted holes to that of with the conventional holes was ranging from 0.70 to 0.80. As next step, a series of slip coefficient evaluation experiments of actual non‐structural components are planned to investigate that the reduction factor obtained from the element tests could be adopted to the components. In that case, eccentricity and stress distribution in the connection should be considered.

The Clinical performance of all ceramic zirconia-veneered crowns after different surface treatments of zirconia framework: 30 months clinical assessment

Objective: To evaluate the clinical performance of zirconia-veneered crowns after different surface treatment of zirconia frameworks named as; no surface treatment, sandblasting, silicatization (CoJetTM sand) , Selective infiltration etching (SIE) and the novel acids mixture.Materials and methods: A total of 50 patients of age ranged from 20 to 35 years were presented with root canal-treated molar teeth that needed post-retained restorative treatment. They were divided into 5 groups according to surface treatment of zirconia frameworks (10cases each); Group S1: Zirconia frameworks received no surface treatment. Group S2: Zirconia frameworks received sandblasting with 110µm aluminum oxide airborne particle abrasives.GroupS3: Zirconia frameworks received CoJet sand surface treatment. Group S4: Zirconia frameworks received selective infiltration etching surface treatment. Group S5: Zirconia frameworks received a specially formulated mixture of hydrofluoric acid (HF 9 wt%) and nitric acid (HNO3 26 wt%) at a ratio of (4:1) for 5 min. All Zirconia frameworks received IPS e.max Ceram veneering porcelain. They received all ceramic zirconia based single crowns using Cerec in-Lab CAD/CAM technology for designing and milling zirconia frameworks. Teeth preparation was performed to achieve 2mm occlusal clearance, 1.5mm axial reduction and 1mm rounded shoulder subgingival finish line. Secondary impression was taken for each case using addition silicone rubber base impression material and poured using special reflective cerec stone (CAM Base) to facilitate scanning of the preparation using the in-Lab extra oral scanner “inEos”. 3D virtual models were obtained that were used for designing zirconia frameworks. Then, milling of zirconia blocks were performed using inLab Cerec 3 milling machine to obtain zirconia frameworks followed by sintering procedures for the zirconia frameworks. After try in of sintered zirconia frameworks in the patient’s mouth, they received different types of surface treatment. After that, porcelain build up was conducted by layering technique. All ceramic zirconia based crowns were then cemented using dual-cured resin cement (Multilink Auto Mix) and were subjected to a period of 6, 12, 18, 24 and 30 months clinical observation according to the modified USPHS criteria for indirect restorations, where prosthodontic results were recorded. Statistical analysis was performed using a commercially available software program (SPSS 19; SPSS, Chicago, IL, USA). Values were presented as number and percentages. Chi square test was used to compare categorical data.The level of significance was set at P < 0.05. Results: It was found that at 6 months, score A was recorded in all specimens of IPS e.max Ceram, with no statistically significant difference between different surface treatments (p=1). At 12 months, score A was recorded in all specimens, with no statistically significant difference between different surface treatments (p=1). At 18 months, score A was recorded in 100% specimens of CoJet and acid mixture surface treatment, in 90% of specimens of no treatment and in 80% of specimens of sandblasting and SIE; with no statistically significant difference between different surface treatments (p=0.815). At 24 months, score A was recorded in 80% specimens of sandblasting, CoJet and acid mixture surface treatment, in 66.7% of specimens of no treatment and in 22.2% of SIE; with a statistically significant difference between different surface treatments (p=0.045). At 30 months, score A was recorded in 80% specimens of sandblasting, 88.9% CoJet and 77.8% of acid mixture surface treatment, in 44.5% of specimens of no treatment and in 11.1% of SIE; with a statistically significant difference between different surface treatments (p=0.0024). Conclusions: (1) In all cases, the tested systems showed chipping of the comparable low-strength veneering ceramic but no fracture of the high-strength core or the natural tooth in clinical cases. (2) The treatment of the surface zirconia framework with Cojet system was able to maintain acceptable clinical performance at 24 months and 30 months recall periods. However, the other surface treatments showed lesser performance. (3)No direct correlation between zirconia framework surface treatments and long term bonding to veneering ceramic could be addressed; however, it could be multifactorial such as lack of proper framework support, internal defects, direction, magnitude and frequency of the applied load as well as the residual stresses induced by processing.

The effect of cataphoretic and powder coatings on the strength and failure modes of EN AW-5754 aluminium alloy adhesive joints

The aim of this study is to determine the effect of cataphoretic and powder coatings and also the method of application the primer on the adherends surface on the strength and failure modes of EN AW-5754 aluminium alloy adhesive joints. The study is performed on lap joints made of EN AW-5754 aluminium alloy, subjected to three different types of surface treatment; namely a) polyurethane cataphoretic coating, b) powder coating based on black mat RAL 9005 UL polyester resin and c) no coating. The tested adhesive joints were made using a one-component polyurethane adhesive Terostat 8596, which was dedicated for automotive and cured under a constant load of 0.018 MPa at 20 ± 2 °C. In addition, this study investigates the effect of the application of Terostat 8519P adhesion promoter which is a liquid polyurethane-based primer containing solvents and which is corresponding to Terostat 8596 polyurethane adhesive. Terostat 8519P adhesion promoter was applied in two different ways: a) to one substrate and b) to both substrates. The produced adhesive joints were subjected to strength tests using the Zwick/Roell Z150 testing machine. The examination of fracture in the tested adhesive joints was performed in accordance with the EN ISO 10365 standard. The shear strength results have demonstrated that both the method of application of the adhesion promoter (Terostat 8519 P) and the presence of cataphoretic coating had an influence on adhesive joints strength. The use of the adhesion promoter significantly affects the strength of both uncoated EN AW-5754 aluminium alloy adhesive joints and the adhesive joints subjected to powder coating. The use of the adhesion promoter has a less significant effect on the cataphoretic-coated samples.

The effect of grain size on the surface properties of titanium grade 2 after different treatments

This paper presents findings concerning the influence of the grain size of titanium on its surface properties and on the efficiency of surface treatments. The investigations were performed on titanium grade 2 of two grain sizes. The chemical composition and chemical state of the surface were analyzed by X-ray photoelectron spectroscopy. Different types of surface treatment were applied: plasma nitriding, and a combination of chemical and mechanical modifications using etching with hydrofluoric acid and shot peening. The effect of the grain size on surface treatments was evaluated through roughness quantification, hardness measurements, and observations of the surface and microstructure.The investigations showed that grain size influences the wettability and surface free energy of titanium grade 2. A reduction in grain size is beneficial for the effectiveness of plasma nitriding. The results also indicate that the grain size of titanium grade 2 affects the surface morphology after shot peening and chemical etching with HF acid; these various methods make it possible to modify the surface roughness of titanium over a wide range. The present paper demonstrates that grain size affects the surface properties of titanium grade 2 and can be used as an additional parameter in optimizing the microstructure and properties of surface layers and coatings.

Разработка компьютерных моделей баллистических тканей с поверхностной обработкой

Ballistic fabrics are widely used in protective armor structures. Minimizing the mass of armored structures, reducing the kinetic energy of the bullet transmitted to the object located behind the armored panel (for reducing the amount of deflection of the rear side of the panel) are actual tasks for today. A significant part of the energy of the bullet is dissipated due to the work of frictional forces when pulling yarns from the fabric. Ability to predict the work of ballistic fabric when pulling yarn from the fabric will allow designing high-performance armored structures. Therefore, low-parametric numerical models of pulling a yarn from aramid fabric P110 of plain weave, as well as for this fabric with different types of surface treatment (rosin, silicone grease) were developed using the LS-DYNA software package. Surface treatment of the fabric allows you to change the coefficient of friction between threads with minimal weight gain. In the model, the surface treatment was accounted for by changing one parameter of the coefficient of dry friction. Several methods of parallelizing the problem of pulling a yarn from a fabric are considered. Numerical experiments were conducted to study the scalability of problem. The calculated curves of the load from displacement when drawing a thread from a fabric with and without surface treatment were obtained. The calculated results are in the range of the scatter of the experimental data.

3-D thermohydrodynamic analysis of textured, grooved, pocketed and hydrophobic pivoted-pad thrust bearings

In the present study, a computational investigation of thermohydrodynamic lubrication in pivoted-pad thrust bearings exhibiting different types of surface treatment is presented. Five different types of pivoted-pad thrust bearings are cross-evaluated for operation at different combinations of thrust load and rotational speed: (a) a pocket bearing, (b) a bearing with circumferential grooves, (c) a bearing with radial grooves, (d) a bearing with rectangular texturing, and (e) a hydrophobic bearing. A parametric analysis is conducted to identify the effect of the main design parameters (machining depth, radial/circumferential machining extents, slip length, radial/circumferential hydrophobic extents) on bearing performance. The performance gains obtained by each surface treatment type are evaluated against the performance of a conventional plain bearing of the same principal dimensions.

ESTRATÉGIAS DE CIMENTAÇÃO EM RESTAURAÇÕES LIVRES DE METAL: UMA ABORDAGEM SOBRE TRATAMENTOS DE SUPERFÍCIE E CIMENTOS RESINOSOS

The metal-free restorations are sought out due to aesthetic needs. The success of restorative treatment depends on the peculiarities of each ceramic system and on a proper strategy for cementing. This article presents the surface treatment of the interfaces involved during the cementing, the dental structure and restoration, and elucidates the cementing agent. It emphasizes the different types of surface treatment for acid-sensitive and acid-resistant ceramics, and hybrid ceramics. The literature review was based on scientific articles published in different database (PubMed, Medline, Scielo, Bireme and Google Scholar) using the keywords: prosthodontics, ceramics, surface treatment and cementation. Relevant articles were selected between 2002 and 2015 regarding the issue under review. The knowledge of dentists about the cementation strategies, depending on the type of ceramic used, is necessary for decision making during the cementing and promote the clinical success of treatment with metal-free restorations.

ESTRATÉGIAS DE CIMENTAÇÃO EM RESTAURAÇÕES LIVRES DE METAL: UMA ABORDAGEM SOBRE TRATAMENTOS DE SUPERFÍCIE E CIMENTOS RESINOSOS

As restaurações livres de metal são buscadas pelos anseios estéticos da população. Para o sucesso deste tratamento restaurador deve-se observar as peculiaridades de cada sistema cerâmico e seguir uma estratégia adequada para cimentação. Este artigo objetiva apresentar o tratamento de superfície das interfaces envolvidas durante a cimentação, a estrutura dental e a peça protética, e elucidar o agente cimentante. Enfatiza os diferentes tipos de tratamento de superfície para cerâmicas ácido-sensíveis, ácido-resistentes e cerâmicas híbridas. A revisão de literatura baseou-se em artigos científicos publicados em diferentes base de dados (PubMed, Medline, Scielo, Bireme e Google Acadêmico), utilizando os descritores: Prótese Dentária, Cerâmica, Tratamento de superfície e Cimentação. Foram selecionados artigos relevantes entre 2002 a 2015 referente à temática em revisão. O conhecimento do cirurgião-dentista sobre as estratégias de cimentação, conforme o tipo de cerâmica utilizada, é necessário para tomada de decisão durante a cimentação e para promover o sucesso clínico do tratamento com restaurações livres de metal.

Thermal conductivity of polypropylene composites filled with silane-modified hexagonal BN

The aim of this study is to increase thermal conductivity of polypropylene (PP) composites filled with hexagonal boron nitride particles. Two types of BN with different types of surface treatment were used – pristine and covered with 3-amino-propyl-3-ethoxy-silane (APTES), which was bonded to hydroxyl groups, formed on the h-BN surface by annealing at 1100 °C. The presence of covalently bonded silane functional groups on the surface of h-BN particles was proved by Fourier transform infrared spectroscopy (FTIR) method. Surface treatment of h-BN particles allowed to introduce 3-times increased amount of the filler in the composite produced by extrusion casting technique as compared with non-treated h-BN filler. The thermal conductivity of PP composites filled with surface-modified h-BN was effectively enhanced – up to 2 times as compared with the composite filled with pristine h-BN and more than 2.5–4 times as compared with pure PP.

Surface treatment of concrete test specimens subjected to compression

The technological control of concrete can only be considered a quality control procedure when all its steps are followed properly. Compressive strength testing plays a critical role in the technological control of concrete structures and in the technological development of concrete. The aim of this study is to select the most suitable preparation technique for conventional and high-strength concrete by analyzing mean strength, standard deviation and coefficients of variation. Test specimens with compressive strength ranging from 20 to 120 MPa were prepared in a laboratory and were then subjected to seven different types of surface treatment, using bonded, unbonded and mechanical wear (grinding) systems. Results show that the most effective technique is grinding using a rigid head. The performance of unbonded system was also suitable for use with conventional and high strength concrete.

Evaluation of Microleakage of Soft Liners to Highly Impact Acrylic Resin

Aims: To evaluat the microleakage of four types of soft Liners materials(Vertex, Molloplast B, Bony plus and Silicon promedica) with different surface treatment: acetone, monomer, and laser at different period of storage to highly impact acrylic resin. Materials and Methods: Two hundred and forty spe-cimens for microleakage have been prepared , each specimens consists of two parts: acrylic resin den-ture base part (30mm) diameter , ( 2mm) thickness of acrylic resin and (30mm) diameter, (2mm) thik-ness of soft liners. Soft denture liners bonded to three different groups of surface treatment: acetone, monomer, laser treated to denture base resin. Microleakage specimens underwent three aging proce-dures: storage at one week, one month without thermocyling and one month with thermocyling inside 2% methylen blue dye in 600 cycles. Results: The results showed that microleakage of Vertex and Molloplast_B in one week and in one month without thermocyling were the lowest value from the oth-er types , in one month with thermocyling the vertex was the lowest of microleakage than oth-ers.Treating the surface of denture bases with acetone and monomer had the highest value of microlea-kage from other types of surface treatment in one week ,while in one month without thermocyling and one month with thermocycle, there were no significant difference in microleakage among the the dif-ferent types of surface treatment of acrylic resin Conclusions: Permanent soft liner of acrylic type (ver-tex) had the lowest values of microleakage after different periods of storage and thermocyling .

Effect of ambient lighting on liquid–crystal displays with different types of surface treatment

Liquid-crystal displays (LCDs) with different types of surface treatment have been developed for decreasing the effect of ambient lighting on a displayed image. The effect of ambient lighting on LCDs with different surface treatments, namely, glare (G)-type, anti-glare (AG)-type, and anti-reflection (AR)-coating LCDs, was evaluated quantitatively in this study for appropriate selection. The effect of ambient lighting on diffuse reflection and specular reflection was investigated. The coefficient of diffuse reflection of the AR-coating LCD was smaller than the others. The effect of diffuse reflection on the display function of each LCD was evaluated in terms of the deviation of the contrast response at the lowest luminance level when the illuminance changed from the condition that was used for calibration of the grayscale standard display function. The display function of the AR-coating LCD was affected less by diffuse reflection compared to the others. On the other hand, the coefficient of specular reflection of the AG-type LCD was the smallest until the angle of aperture of the light source was 4.6°. The specular-reflected image on the AG-type LCD had a remarkably broad distribution compared to the others. Our results are merely examples for a limited number of LCDs; however, we clarified quantitatively that the AR-coating and the AG-type LCDs were affected less by diffuse and specular reflection than the G-type LCD.