Cilt:48 Sayı:03 (2021)

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https://dspace.ankara.edu.tr/handle/20.500.12575/77416

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Browsing Cilt:48 Sayı:03 (2021) by Author "Diş Hekimliği"

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    Comparison of the effectiveness of chemo-mechanical and traditional caries removal methods in primary teeth using micro-computed tomography
    (Ankara Üniversitesi Diş Hekimliği Fakültesi, 2021) Turgut Coşgun, Melike; Diş Hekimliği; Diş Hekimliği Fakültesi
    Objective: The purpose of this study was to evaluate dentin mineral density before and after caries removal with the traditional caries removal technique and chemo mechanical method, with or without the use of caries detection dye. Our null hypothesis was that the chemo mechanical method with minimally invasive treatment would achieve an effect similar to that of conservative pediatric dentistry treatment. Forty-eight extracted human primary molar were used in this study. Materials and Methods: The two main study groups underwent treatment with the chemo mechanical and traditional methods. The teeth were then treated with chemo mechanical and traditional caries removal approach. Teeth were scanned with the same voxel sizes using micro-CT images to figure out the difference dentin mineral density and to calculate the removed (excavated) dentinal volume after chemo mechanical or traditional method application. Results: The results showed increase of cavity volume in the chemo mechanical and traditional method groups. No significant difference was found for cavity volume and dentinal carious volume in both groups (p˃0,05). The mineral density values of demineralized dentin were between 0.52-0.66 g/cm3 before caries removal, and 1.39-1.59 g/cm3 after removing caries. These values were found to be within the range of healthy dentin mineral density values again without any significant difference between groups (p˃0,05). Conclusions: In conclusion, chemo mechanical can be used effectively for removing the caries in the primary molar teeth similar to conservative treatments.
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    Evaluation of different beverages’ effect on microhardness and surface roughness of different artificial teeth
    (Ankara Üniversitesi Diş Hekimliği Fakültesi, 2021) Özkan, Pelin; Diş Hekimliği; Diş Hekimliği Fakültesi
    Purpose: This study evaluated the microhardness and surface roughness of four artificial teeth type against various beverages. Materials and Methods: Conventional acrylic resin, reinforced acrylic resin, microfiller composite resin, and nanofiller composite resin teeth were used. From each group, 10 maxillary first and second molars were immersed in 5 beverages (tea, filtered coffee, cola, cherry juice, and distilled water. The test period of 24 hours appears comparable to approximately 1 month of normal beverage consumption. The test periods used in this study were arranged according to this protocol and 1 week, 1 month, 3 months and 6 months of normal beverage consumptions were simulated. Vickers microhardness and surface roughness of denture teeth were measured for each test period. Results: The microhardness values significantly decreased in all beverages especially in 6th month. The surface roughness values significantly increased in all beverages especially in 3th month. There were no statistically significant differences between the beverages. Microfiller composite resin denture teeth had the highest microhardness values and the lowest surface roughness values. Conclusions: Different types of beverages consumed daily negatively affect the microhardness and surface roughness of artificial teeth. Microfiller composite resin teeth could have the ideal surface properties.
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    Full-mouth reconstruction with ımplant and tooth-supported zirconia restorations in a digital workflow
    (Ankara Üniversitesi Diş Hekimliği Fakültesi, 2021) Oğuz, Ece İrem; Diş Hekimliği; Diş Hekimliği Fakültesi
    Zirconia has become a popular restorative material regarding the mechanical and biocompatibility advantages. Monolithic and translucent forms of zirconia advanced the aesthetics of this material, making it the material of choice for both tooth- and implant- supported restorations. Also, digital fabrication of zirconia not only enables accurate restorations but also provides time efficiency. The present case report demonstrates the rehabilitation of a patient who has generalized tooth wear with implant- and tooth-supported monolithic zirconia restorations with buccal veneers in a newly established occlusal vertical dimension. The treatment process was completed in a digital workflow as the impressions were taken with a powder-free intraoral scanner and the digital data were send to the dental laboratory to fabricate the restorations. Monolithic zirconia restorations with buccal feldspathic veneers were completed without any adjustments in only two appointments. The patient was satisfied and the restorations have been in service for two years.
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    Knowledge and awareness of turkish mothers regarding primary teeth
    (Ankara Üniversitesi Diş Hekimliği Fakültesi, 2021) Yıldırım, Sinem; Diş Hekimliği; Diş Hekimliği Fakültesi
    Purpose: This study aimed to evaluate the mothers' knowledge and awareness of primary teeth. Methods: This cross-sectional study consisted of 323 children and their mothers. A questionnaire form consisting of 10 questions about the definition of primary teeth, their total number and treatment requirements was applied to the mothers. Pearson Chi-Square and Fisher-Freeman-Halton tests were used to analyze the data. Results: The rate of wrong answers given by mothers with low education level to the question "What are primary teeth?" was significantly higher (p <0.001). The rate of correct answer given by mothers with low education level to the question "How many primary teeth are there in a healthy dentition?" was significantly lower (p = 0.002). The answer of "no" given by mothers with a low education level to the question "Do you think it is necessary to treat primary teeth?" was significantly higher (p=0.016). The rate of correct answer given by families with a monthly income above 5000 TL to the questions "What are primary teeth?" and "How many primary teeth are present totally?" were significantly higher (p=<0.001). Conclusion: The superior the education level and the monthly income of the family, the higher the rate of answering questions that require information.
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    Pre-eruptive Intra-coronal resorption: A report of two cases and review of the literature
    (Ankara Üniversitesi Diş Hekimliği Fakültesi, 2021) Jagtap, Rohan; Diş Hekimliği; Diş Hekimliği Fakültesi
    Pre-eruptive intracoronary resorption is a rare condition mainly affecting pediatric patients. It is a radiographic finding in the dentin of the crown of an unerupted tooth just below the enamel-dentin junction. It is visualized in radiographs as a radiolucent coronal lesion of variable depth; it is well-defined and located in the dentin adjacent to the amelodentinal limit of an unerupted tooth. Historically, this lesion was misdiagnosed as caries and was misnamed pre-eruptive caries, when in reality they were pre-eruptive intracoronal resorptions. We present two rare cases of pre-eruptive intracoronary resorption in patients that needed radiographs for orthodontic purposes. The Oral & Maxillofacial Radiologist detected the existence of pre-eruptive intracoronary resorption in mandibular second premolars and mandibular second molar. These radiographic findings provided the clinician with the advantage of knowing this condition before teeth eruption, allowing for conservative treatment and periodic radiographic follow-up.