Physical Properties of Restorative Materials at Different Profoundness of Preparation of Hard Tissues of Teeth

Водоріз, Ярослав Юрійович; Водорез, Ярослав Юрьевич; Vodoriz, Y. Y.

doi:10.29254/2077-4214-2018-4-1-146-186-188

Cited by 4 publications

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“…Продовжити розпочате дослідження із визначення фізичних властивостей найбільш розповсюджених реставраційних матеріалів на межі з'єднання з твердими тканинами зуба [9], а також визначити опору зсуву комплексу твердих тканин (емалі / дентини) у зв'язку із кожним з піддослідних матеріалів (фотокомпозит EsthetX HD -Dentsply-Sirona; польовошпатна кераміка EX3 -Noritake; кераміка на основі лейцитного скла IPS Empress Esthetic -Ivoclar Vivadent) .…”

Section: мета дослідженняunclassified

Assessment of Shear Bond Strength of Restorative Materials in Various Depth of Hard Dental Tissue Preparation in Front Teeth

Vodorez

Ткаченко

2019

Act. Probl. of the Modern Med.

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In modern dentistry, there are two different approaches to the restoration of anatomy and aesthetics of anterior teeth. The most common is the option of direct restoration with using composite resin materials. The second option is the restoration with using ceramic materials that is carried out through the cooperation of the dentists and the dental laboratory technicians, or, alternatively, with various CAD-CAM systems directly at the dental office. This experiment was carried out by using teeth (premolars, incisors) without significant loss of hard dental tissues. Teeth with abrasion (all except 1st degree) were excluded from the test group. Within the framework of the planned study, the selected extracted teeth were prepared (a certain volume of hard tissues was removed from the vestibular side (a subgroup of the teeth prepared within in the enamel layer, and a subgroup of teeth with the exposed dentine). A total of 40 teeth were prepared (20 teeth with the exposed dentine, 20 with the enamel preparation). The tests were carried out by using a universal testing machine AUTOGRAPH AGS-J. A sample with a tooth was placed at the top of the device then the second part of the sample containing the plate of the material (composite or ceramic), was covered with the second part of the device to be tested, and neatly, trying to avoid applying tension to the adhesive butt joints, and then fastened to the lower clamping device of the tension testing machine. We created the shear forces before the sample was destroyed, paying attention to the character of adhesion line oddments. The results of the experiment have demonstrated that the most optimal shear strength is found out in the complex of hard tooth tissues and ceramic materials IPS Empress Aesthetic and EX3, in the teeth prepared within the tooth enamel layer. When using composite resin, the values studied are lower by 11,4% and 18,1%, (application of adhesion systems of 5th and 7th generations, respectively). In the cases when dentin is exposed, the shear strength decreases by 19,5% when using ceramics modified by leucite glass, by 17,3% in the case of application of feldspar ceramics, and by 8,4% and 13,2% for composite resin restoration when using adhesive systems of 5th and 7Ith generations respectively.

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Section: мета дослідженняunclassified

Assessment of Shear Bond Strength of Restorative Materials in Various Depth of Hard Dental Tissue Preparation in Front Teeth

Vodorez

Ткаченко

2019

Act. Probl. of the Modern Med.

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The Effect of Servise Life on the Water Absorption Parameter of Light Curing Composite Resin Materials

Vodoriz,

Bordyuzha,

Kozak

et al. 2023

Act. Probl. of the Modern Med.

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Introduction. Water absorption is one of the important properties of light-curing composite resin materials used in dentistry for tooth restoration. Water absorption refers to the ability of a material to absorb water and can affect its mechanical and aesthetic properties. Aim. To find out whether the service life of the composite material has an effect on the water absorption parameter. Materials and methods. Light-curing composite resin Latelux (Latelux), manufactured by Latus, Ukraine, was chosen as the material for study. Two groups, test and control groups, were formed. The first group included samples of material with an expired service life (expired before 2018). The samples were dried in a desiccator and weighed, then placed into a thermostat with distilled water for 7 days, then removed and weighed to determine water absorption. Calculations were performed in MS Excel 2013 using the formula W: (m2-m3)/V (μg/mm3). Results. After calculating the obtained results, the water absorption of the samples with an expired shelf life was on average 3.55±0.9 µg/mm3, while the composite with a normal shelf life was 4.9±1.8 µg/mm3. All samples passed the test, i.e. their parameter did not exceed 40 μg/mm3 according to ISO standards. Statistically obtained data did not reveal a relationship between the shelf life of the composite and its water absorption (p=0.464). The thickness of the composite material also has no statistical significance on the water absorption of the composite either in the experimental (p=0.26) or in the control group (p=0.378). Conclusions. Based on the results of our own research, as well as data from literary sources, we can conclude that the shelf life does not have a significant impact on the water absorption rate of the Latelux composite material.

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Changes in Electromyography Test Results of Patients With Pathological Abrasion of Teeth. The Role of Anterior Teeth in the Process of Rehabilitation

et al. 2019

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Introduction: Abrasion of teeth significantly affects electromyography results. Analyzing electromyograms of patients who needs complex rehabilitation, it is necessary to note absence of dissociation of the structure, appearance of spontaneous activity in one of the muscles, presence of the prevailing chewing side, appearance of low-amplitude oscillations in biocurrents. The aim: The purpose of this study was to determine the role of anterior teeth in the rehabilitation of patients with increased abrasion. Material and methods: The experimental group involved patients (men and women) aged 20 to 59 years with increased abrasion of teeth I-III degrees. Patients were provided with all the necessary complexes of rehabilitation measures: direct restorations with composite materials using the adhesive system of the Vth generation (in case of light abrasion), indirect ceramic restorations (severe abrasion). All work was conducted in accordance with the Declaration of Helsinki (1964) and was approved by the Ethical Committee of the academy. Results: Activity of the right masseter muscle was slightly higher than that of the left one (313.42 ± 97.96 ms. against 226.69 ± 35.39 ms. respectively). At the same time the resting time of the left and right masseter muscles slightly differs (300.57 ± 30.93 ms. and 307.96 ± 49.47 ms. respectively). Conclusions: Rehabilitation of patients with increased abrasion using combined methods (direct composite restorations with the adhesive system of Vth generation and indirect ceramic restorations), give the possibility to restore the masticatory function (evidenced by an increase in the activity of right and leftmasseter muscle on 2%, a decrease in the rest phase on 20% almost and an increase in amplitude on 2.9%).

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Physical Properties of Restorative Materials at Different Profoundness of Preparation of Hard Tissues of Teeth

Cited by 4 publications

References 0 publications

Assessment of Shear Bond Strength of Restorative Materials in Various Depth of Hard Dental Tissue Preparation in Front Teeth

Assessment of Shear Bond Strength of Restorative Materials in Various Depth of Hard Dental Tissue Preparation in Front Teeth

The Effect of Servise Life on the Water Absorption Parameter of Light Curing Composite Resin Materials

Changes in Electromyography Test Results of Patients With Pathological Abrasion of Teeth. The Role of Anterior Teeth in the Process of Rehabilitation

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