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    Effect of Two Vital Bleaching Agents on the Color Properties of the Low-Fusing Dental Ceramics
    (Kapadokya Üniversitesi Yayınları, 2021) Şahin, Nesrin; Şahmali, Sevil Meral; Uyar, Alper
    Statement of the problem: The effects of vital bleaching agents on color properties of dental tissues and direct restorative materials are well documented. However, there is a lack of information about the effects of these agents on low-fusing dental ceramics.
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    Effects of nocturnal complete denture usage on cardiorespiratory parameters: A pilot study
    (Elseiver, 2021) Uyar, Alper; Pişkin, Bülent; Şenel, Buğra; Avsever, Hakan; Karakoç, Ömer; Taşçı, Cantürk
    Statement of problem: Sleeping without conventional complete dentures (CCDs) has been stated by some to induce negative effects on the cardiorespiratory functions of edentulous patients with obstructive sleep apnea (OSA), although others have reported the exact opposite. Therefore, a consensus on nocturnal CCD usage is lacking. Purpose: The purpose of this clinical study was to assess the effects of nocturnal denture usage on cardiorespiratory stability by using pulse oximetry (PO). Materials and methods: Thirty CCD wearers were enrolled in the study. The first nocturnal pulse oximetry (FNPO) recordings were made on 3 different nights while the participants were sleeping without dentures (WOD). Oxygen desaturation index (ODI) and other PO parameters of the participants, including total respiratory event (TRE), basal SpO2 (BSpO2), time?88 (T88), average low SpO2 (ALSpO2), total pulse event (TPE), average pulse rate (APR), and heart rate variability index (HRVI), were processed and the obtained data were recorded as WOD condition values. According to the ODI scores, the OSA status of the participants was grouped as normal (ODI<5), mild (530). Complete dentures were fabricated by an experienced prosthodontist and a dental laboratory technician by following conventional procedures. At the end of the first month of the follow-up period, the second nocturnal PO recordings (SNPO) were made on 3 different nights while the participants slept wearing dentures (WID), and the data obtained were recorded as WID condition values. The comparison of mean PO values obtained from WOD and WID were analyzed with the Wilcoxon signed- rank test (?=.05). Results: Significant differences were found between WOD and WID values in terms of TRE (P=.01), ODI (P=.001), ALSpO2 (P=.006), TPE (P=.001), and HRVI (P=.001) parameters. The significance of the improvements in the WID condition increased with the severity of OSA. Conclusions: Improvements were observed in substantial cardiorespiratory parameters such as the ODI and HRVI of the participants wearing dentures nocturnally.
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    Evaluation of The Processing Discrepancies Between Dental and Nondental CAD Software Using The Smoothing Design Tool
    (Kapadokya Üniversitesi Yayınları, 2022) Uyar, Alper; Pişkin, Bülent; Pişkin, Mehmet Ali; Akın, Hakan; Arısan, Volkan; Koçyiğit, Önder
    Statement of the problem: The advancing computer-aided design/computer-aided manufacturing (CAD/CAM) technology has changed the fabrication protocols of fixed prosthodontic restorations dramatically in the last 25 years. Beside the dental CAD programs open source nondental software have been utilized for prosthodontic purposes. Despite the progress in technology, varying accuracy and precision rates, and lack of standardized workflows are still challenging issues.
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    Fabrication of a Mandibular Advancement Device Using a Fully Digital Workflow: A Clinical Report
    (Wiley, 2021) Pişkin, Bülent; Uyar, Alper; Yüceer, Mine; Çağlayan Topal, Sıla; Atasoy Şentürk, Rahşan; Sütcü, Serdar; Karakoç, Ömer
    Obstructive sleep apnea (OSA) is a common disorder among adults with a potential to be life-threatening. Continuous positive airway pressure is the gold-standard for the treatment of OSA, but patient compliance may be reduced due to various reasons. Mild to moderate cases of OSA can be treated reliably and successfully using oral appliances, and the mandibular advancement device (MAD) is the most frequently used appliance. The aim of this clinical report is to present a fully digital workflow for fabrication of a custom non-adjustable MAD using computer aided design/computer aided manufacturing and additive manufacturing for the treatment of a patient with moderate OSA.
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    Utilization of Sleep Application and Pulse Oximetry in the Short-Term Follow-Up of Mandibular Advancement Device Therapy: A Case Report
    (2018) Pişkin, Bülent; Şenel, Buğra; Uyar, Alper; Karakoç, Ömer; Taşçı, Cantürk
    Pulse Oximetry (PO) has been a qualified method to determine cardiorespiratory stability of the subjects for home-based sleep studies. However, not any user friendly methods have been presented yet to score the snoring severity of subjects in home conditions. Sleep applications (apps), which is claimed to score snoring severity of the patients, have been came into use with technological opportunities provided by smart phones. Nevertheless, there are not any reports in the literature about the usage of these apps yet. This report describes the utilization of a sleep app in the short-term follow-up of Mandibular Advancement Device (MAD) therapy applied for a moderate Obstructive Sleep Apnea (OSA) patient with habitual snoring. Initially Epworth Sleepiness Scale (EPSS) of the patient was determined and sleep app recordings were performed simultaneously with PO at three different nights. The mean snore score and Oxygen Desaturation Index (ODI) were calculated. A custom MAD was fabricated and all recordings were repeated at the end of the 6 months usage. The initial EPSS value of the patient was decreased from 16 to 3 with MAD therapy. Moreover, the mean ODI of the patient was reduced by 60% as compared with its initial value. Furthermore, snore scores obtained by the sleep app showed highly compatible alterations both with EPSS and PO values. Using a sleep app in the scoring of snore severity seems like a promising innovation for the future home-based sleep studies.