Latar Belakang. Kista radikuler merupakan salah satu jenis kista yang paling sering terjadi pada tulang rahang.Dengan pemeriksaan radiograf konvensional kadang susah dibedakan dengan lesi lain. Salah satu cara untuk menentukan diagnosis lesi dengan melihat gambaran lesi dan batas tepi lesi. Radiograf CBCT mempunyai kemampuan untuk menentukan densitas suatu lesi. Tujuan. Gambaran pola densitas kista radikuler dapat membantu menentukan gambaran lesi dan batas tepi lesi. Kasus. Laki-laki berumur 28 tahun datang ke dokter gigi untuk cabut gigi 26. 10 tahun kemudian pasien merasa ada benda keras muncul di area 26. Dilakukan radiograf periapikal, ada lesi radiolusen mendekati sinus maksilaris, kemudian dilakukan pemeriksaan dengan CBCT. Manajemen kasus. Pemeriksaan radiograf CBCT potongan sagital diperoleh densitas tulang pada batas tepi lesi 626 HU dan 509 HU sedangkan pada tengah lesi 119-281 HU, pada potongan coronal batas tepi lesi 626 HU dan 749 HU sedangkan pada tengah lesi 84-341 HU, pada potongan axial batas tepi lesi 593 HU dan 665 HU sedangkan pada tengah lesi 66-294 HU. Ada perbedaan yang jauh antara tepi lesi dengan dalam lesi. Kesimpulan. Gambaran pola densitas pada lesi dan batas tepi lesi dapat membuktikan bahwa lesi memiliki batas yang jelas dan tegas seperti karakteristik kista.

Banyaknya korban meninggal yang disebabkan oleh bencana massal atau kejadian lainnya perlu dilakukan proses identifikasi untuk mengetahui identitas para korban. Proses identifikasi salah satunya dapat dilakukan menggunakan teknik dental records dalam menentukan identitas individu. Metode penentuan usia menggunakan dental records yang paling sering digunakan adalah metode Demirjian, serta terdapat metode baru dalam penentuan usia yaitu metode Cameriere dan metode Blenkin-Taylor. Penelitian ini bertujuan untuk membandingkan keakuratan penentuan usia antara metode Demirjian, Cameriere, dan Blenkin-Taylor pada pasien di RSGM UMY. Metode pada penelitian ini adalah observasional analitik dengan jumlah sampel adalah 95 foto radiograf dari pasien berusia 4-15 tahun yang berkunjung ke Rumah Sakit Gigi dan Mulut Universitas Muhammadiyah Yogyakarta (RSGM UMY) pada bulan januari hingga desember 2017. Analisis data pada penelitian ini menggunakan uji statistik Chi-Square Test dan crosstabulation menggunakan software spss. Hasil menunjukkan bahwa metode Demirjian memiliki keakuratan sebesar 66.31% (63 sampel), metode Cameriere memiliki keakuratan sebesar 51.57% (49 sampel) dan metode Blenkin-Taylor sebesar 54.74% (52 sampel). Analisis statistik ketiga metode tersebut tidak memiliki perbedaan yang bermakna dalam keakuratan penentuan usia pasien. Kesimpulan dalam penelitian ini adalah metode Demirjian, Cameriere, dan Blenkin-Taylor tidak memiliki perbedaan keakuratan dalam penentuan usia.

Mandibular foramen (MF) is the main target of inferior alveolar nerve block (IANB) because it is the place of the inferior alveolar nerve transmission. The MF position can be different between each person due to the growth of the mandible with age. Therefore, it is necessary to identify the MF position based on age to ensure the success of IANB which has 15-20% of failure rate. The purpose of this study was to identify the MF position seen from the age of population in RSGM UMY using panoramic radio-graphy. A total of 330 panoramic radiographs of RSGM UMY's patients aged 10-29 years were selected and categorized based on the age of mandibular development. The identification was carried out vertically (seen from the height of the occlusal plane) using Corel Draw. Data were distributed based on the MF position to the occlusal plane into 3 groups (Position 1: above the occlusal plane, Position 2: parallel to the occlusal plane, Position 3: below the occlusal plane) and were analyzed using descriptive statistical methods. The highest percentage of MF position in each age group was found in Position 3 on both sides of the mandibular canal. The movement of the MF in the remodelling phase is in anterior-posterior direction, so, there is no difference in the MF position based on age. This hopefully can assist in determining the direction of the needle insertion in IANB.

The more younger lecturers among young students, the more they would like to approach them, either during lecture or outside the class. The approach might make the relationship between lecturers and students closer and more emotional. However, it could seem less politeness which students have. This can be seen from the way and the language use through text messages on social medias, particularly on WhatsApp. This research aims to find out the variety of the students' politeness when having interaction with lecturers trough short message on WhatsApp by describing the students' language politeness, the principles of the deviation in politeness, the obedience and the function of the language politeness itself in the relationship between students and lecturers of Universitas Bina Sarana Informatika. Primary data in this research is written conversation records, especially screen shots of chats on WhatsApp. Secondary data is the  knowledge of Pragmatic Studies of Bahasa Indonesia including the theories regarding language politeness principles in order to impact to the characters of the nation's next generation. The method used in this research is pragmatic studies, in particular with pragmatic and contextual equivalents.

Odontogenic Keratocyst (OKC) usually appears asymptomatically; thus, it is likely to be found incidentally. World Health Organization (WHO) classifies OKC into tumors as they have similar characteristics. Although it is classified as a non-malignant tumor, odontogenic keratocyst can occur repeatedly. It tends to affect the surrounding tissue when the tumor gets bigger. This radiographic image of the OKC has somewhat specific features. The aims of the research is to identify the OKC in a panoramic radiograph. Case: a 24-year old woman complained that She frequently felt pain in her lower left molar; thus, it sometimes felt uncomfortable to chew food. The intraoral examination of 38 showed percussions (+) and there were no abnormalities in the mucosa around the tooth. The radiographic examination showed the radiolucent lesion in the apical tooth 38 that extended towards the anteroposterior with a diameter of  30 mm. Discussion: OKC can be derived from the proliferation of oral epithelial basal cells, having the innate growth potential, consistent with a benign tumor. In this case, OKC goes along with pain in the involved tooth. The radiographic features of OKC shows unilocular radiolucent lesion with a well-defined and cortical border like a 'scalloped outline'. Conclusion: OKC sometimes appears to be asymptomatic; thus, sufficient knowledge of OKC radiographs can help identify the lesion early.