CBCT is a modernized technology in producing radiograph image on dentistry. The image quality excellence is very important for clinicians to interpret the image, so the result of diagnosis produced becoming more accurate, appropriate, thus minimizing the working time. This research was aimed to assess the image quality using the blank acrylic phantom polymethylmethacrylate (PMMA) (C5H8O2)n in the density of 1.185 g/cm3 for evaluating the homogeneity and uniformity of the image produced. Acrylic phantom was supported with a tripod and laid down on the chin rest of the CBCT device, then the phantom was fixed, and the edge of the phantom was touched by the bite block. Furthermore, the exposure of the X-ray was executed toward the acrylic phantom with various kVp and mAs, from 80 until 90, with the range of 5 kV and the variation of mA was 3, 5, and 7 mA respectively. The time exposure was kept constant for 25 seconds. The samples were taken from CBCT acrylic images, then as much as 5 ROIs (Region of Interest) was chosen to be analyzed. The ROIs determination was analyzed by using the ImageJ® software for recognizing the influence of kVp and mAs towards the image uniformity, noise and SNR. The lowest kVp and mAs had the result of uniformity value, homogeneity and signal to noise ratio of 11.22; 40.35; and 5.96 respectively. Meanwhile, the highest kVp and mAs had uniformity value, homogeneity and signal to noise ratio of 16.96; 26.20; and 5.95 respectively. There were significant differences between the image uniformity and homogeneity on the lowest kVp and mAs compared to the highest kVp and mAs, as analyzed with the ANOVA statistics analysis continued with the t-student post-hoc test with α = 0.05. However, there was no significant difference in SNR as analyzed with the ANOVA statistic analysis. The usage of the higher kVp and mAs caused the improvement of the image homogeneity and uniformity compared to the lower kVp and mAs.
Kista dentigerous atau kista folikuler merupakan kista odontogenik yang terbentuk selama perkembangan gigi dan terbentuk karena akumulasi cairan di rongga folikuler pada gigi yang belum erupsi. Lokasi gigi-gigi yang sering berhubungan dengan kista dentigerous adalah gigi M3 rahang bawah, C rahang atas, P rahang bawah dan jarang pada gigi M3 rahang atas. Kista dentigerous yang berkaitan dengan gigi supernumerari dan sinus maksilaris sangat jarang ditemukan. Panoramik dan CBCT dapat dilakukan untuk melihat kasus kista dentigerous. Tujuan laporan kasus ini untuk melihat temuan kista dentigerous di rahang atas yang meluas sampai ke kavum nasi dan sinus maksilaris melalui gambaran CBCT dan panoramik radiograf. Laporan kasus: Seorang pasien laki-laki berusia 27 tahun datang ke RSGM Unpad untuk dilakukan CBCT-3D. Keluhan pasien yaitu bengkak di daerah langit-langit lebih dari 1 tahun yang lalu, bengkak meluas ke pipi sejak 1-2 bulan yang lalu. Keluhan bengkak tidak terasa nyeri. Konsistensi massa keras dan terasa nyeri saat ditekan. Hasil pemeriksaan CBCT dan histopatologi menyatakan bahwa lesi merupakan kista dentigerous. Simpulan: Kista dentigerous pada CBCT menunjukkan perluasan lesi ke kavum nasal dan sinus maksilaris serta tepi yang lebih jelas dibandingkan dengan radiograf panoramik. Kata kunci: CBCT, panoramik, kista dentigerous, kavum nasal, sinus maksilaris. Maxillary dentigerous cyst finding with expansion of the nasal cavity and maxillary sinus through the CBCT and panoramic radiographs ABSTRACT Introduction: Dentigerous cysts or follicular cysts are odontogenic cysts that form during tooth development and formed from the accumulation of fluid in the follicular cavity of an unerupted tooth. The teeth locations often associated with dentigerous cysts are the mandibular M3, the maxillary C, the mandibular P, and rarely occurred in the maxillary M3. Dentigerous cysts associated with supernumerary teeth and maxillary sinuses are extremely rare. Panoramic and CBCT can be performed to observe dentigerous cysts cases. This case report was aimed to examine the findings of a maxillary dentigerous cyst with expansion of the nasal cavity and maxillary sinus through CBCT and panoramic radiographs. Case report: A 27-yearsold male patient came to Universitas Padjadjaran Dental Hospital for CBCT-3D examination. The patient's complaint was swelling in the palate from more than one-year prior, extended to the cheek from 1-2 months prior. Complaints of swelling was not painful, although, when pressed, then a solid, painful mass will be felt. The results of CBCT and histopathological examination confirmed that the lesion was a dentigerous cyst. Conclusion: Dentigerous cyst on CBCT showed expansion of the lesion to the nasal cavity and maxillary sinus as well as more apparent margins compared to panoramic radiographs.
Objective: The purpose of this study was to obtain an illustration of saliva pH in patients undergoing radiotherapy with linac x-ray radiation for nasopharyngeal carcinoma. Radiation therapy for nasopharyngeal carcinoma frequently caused severe salivary gland dysfunction. The salivary gland dysfunction possibly influenced saliva pH.Material and Methods: The study was a simple descriptive. This study was conducted on 7 males and 2 females undergoing radiation therapy with linac x-ray for nasopharyngeal carcinoma. The measurement of saliva pH was done using an electrode pH meter.Results: This study shows that the range of saliva pH in 9 patients undergoing radiation therapy is 5.34 to 6.19.Conclusion: That saliva pH in 9 patients undergoing radiation therapy with linac x-ray radiation for nasopharyngeal carcinoma at Dr. Hasan Sadikin Hospital is lower than its normal value.
Objective: The periapical dental radiography using bisect technique needs a special skill in managing autistic patient. Autism is one of the characteristics from handicapped children with behavioral syndrome caused by neurological disturbance characterized by behavioral disturbance, communication and social interaction difficulties occurringin the first three years of the children life. Problems occurringin dental radiography in such children make the bisect technique necessary. Dentist and the operator need to do special preparations to optimally create the dental radiograph using two approaches, i.e. nonpharmacological and pharmacologica approaches. Methods:In this case, dental imaging using bisect technique for autistic children is performed using modified technique for periapical and occlusal imaging as well as nonpharmacological approach. Result: Theradiograph examination for autistic children using modified technique can be done successfully. Conclusion: Dental radiographin autistic children canbe performed by modifying periapical radiograph using bisecting technique with nonpharmacological approach.
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