The aims of this study were to develop a new classification for pre‐eruptive intracoronal resorption(PIR) with different resorption areas and sizes and to compare the new classification scores among observers from different specialities and professional experience. The PIR was evaluated according to the new classification by two dentomaxillofacial radiologists and two endodontists. Information regarding the patient's age, gender, systemic diseases, the number of PIR, the affected tooth area and the size of the PIR was recorded. The new classification system showed that PIR six and seven defects were the most detected. Regarding jaw regions, the highest reliability was seen in the maxillary central teeth between observers I and IV, and maxillary premolar‐molar teeth between observers II and III. This study revealed that PIR can be found in both root and crown dentine. Professional experience and specialty and awareness of the PIR defect may affect the diagnosis.

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BackgroundCone beam computed tomography (CBCT) is widely used in paediatric dentistry. Appropriate use of CBCT is important because children are more vulnerable to ionizing radiation than adults.AimTo investigate the use of CBCT in children by describing reasons for requesting it and its distribution according to age, oral region, and department.DesignCone beam computed tomography scans of patients (age < 19 years) who presented to our dental clinic were investigated retrospectively according to sex, age (6–12 [Group 1] and 13–18 [Group 2] years based on dentition), referring department, imaging area (anterior/posterior, mandible/maxilla), and indication. Indications were grouped under five headings according to 2011 SEDENTEXCT guidelines: dental anomalies, impacted teeth, endodontics, bone pathosis, and others.ResultsOverall, 334 CBCT scans at different times and for different reasons in 319 patients were evaluated. In recent years, CBCT requests increased in both age groups. Eighty‐five CBCT scans (25.44%) of 78 patients (24.45%) with a mean age of 10.37 ± 1.60 years were examined in Group 1, whereas 249 CBCT scans (%74.55) of 241 patients (75.54%) with a mean age of 15.66 ± 1.70 years were examined in Group 2. The most frequent indication was the assessment of impacted teeth (46.1%). The anterior maxilla was the most frequently monitored region (41.6%). The oral and maxillofacial radiology department was the department that made the most CBCT requests in all the years considered (53.6%).ConclusionsThe most common indications were the assessment of dentigerous cysts and impacted teeth. There was an increase in the number of referrals to paediatric dentistry.

ÖZET Amaç: "Kissing molars (KMs)" veya "rosette formasyonu", tek bir foliküler torba içerisinde gömülü daimi molar dişlerin oklüzal yüzeylerinin birbiriyle temas etmesini ve köklerinin zıt yönlere uzanmasını ifade eder. Nadir görülen bir durumdur. Bu çalışmanın amacı, Uşak Üniversitesi Diş Hekimliği Fakültesi Ağız, Diş ve Çene Radyolojisi Kliniğine Kasım 2016-Ağustos 2018 tarihleri arasında başvuran hastalarda KMs vakalarını prevalans, yaş, cinsiyet, sınıflandırma ve ilişkili olabilecek patoloji açısından değerlendirmektir. Gereç ve Yöntemler: Toplam 28984 panoramik radyografi ve 892 konik ışınlı bilgisayarlı tomografi görüntüsü retrospektif olarak incelendi. Radyolojik ve klinik veriler yaş, cinsiyet, medikal anamnez, prevalans, sınıflama ve ilişkili patolojiye göre değerlendirildi. Bulgular: Çalışmaya toplamda 18.792 erkek, 11.084 kadın hasta dâhil edilmiştir. İncelenen 29.876 radyolojik tetkik sonucunda toplam 7 hastada KMs tespit edildi (%0,023). KMs tespit edilen 7 hastanın 4'ü erkek, 3'ü kadındı ve yaş ortalaması 28,2 olarak saptandı. 7 hastada tespit edilen toplam 13 KMs olgusunun 4 tanesi unilateral, 3 tanesi bilateral olarak tespit edildi. Sonuç: KMs vakalarının görülme sıklığı çok düşüktür ve radyolojik tanısında herhangi bir zorluk yaşanmaz. Panoramik radyografi üzerinde KMs'ler görüldüğünde, çevre dokular üzerindeki potansiyel etkiler dikkatle incelenmelidir. KMs, mandibular fraktür, perikoronit, lokal ağrı, kistik değişiklik ve komşu dişlerde kök rezorpsiyonu gibi bazı komplikasyonlara neden olabilir. KMs vakalarının herhangi bir sistemik durumla ilişkisini belirlemek adına daha fazla çalışmaya ihtiyaç duyulmaktadır. Anah tar Ke li me ler: Gömülü dişler; kissing molars; prevalans; mukopolisakkaridoz ABS TRACT Objective: Kissing molars (KM) or rosette formation refers to contacting occlusal surfaces of impacted permanent molars in a single follicular space and their roots pointing in opposite directions. It is a rare phenomenon. The aim of present study was to assess the incidence, age, sex, classification and associated pathologies of kissing molars in all patients who presented to Oral and Maxillofacial Radiology Department at Uşak University Faculty of Dentistry between November 2016 and August 2018. Material and Methods: A total of 28,984 panoramic radiograph and 892 cone-beam computed tomography images were inspected retrospectively. The radiological and clinical data of KMs were evaluated according to age, gender, medical history, prevalence, classification and associated pathology. Results: A total of 18,792 male and 11,084 female patients were included in the study. As a result of 29,876 radiological examinations, KMs were detected in 7 patients (%0.023). Of the 7 patients, 4 were male and 3 were female, and the mean age was 28.2. Thirteen KMs were detected in 7 patients, 4 were detected unilaterally and 3 were bilaterally. Conclusion: The incidence of CMS cases is very low and there is no difficulty in the radiological diagnosis. The potential effects on the surrounding tissues should be exam...

Purpose:To investigate the prevalence and radiographic characteristics of migrated mandibular second premolars byusing panoramic radiography.Materials & Methods:The previously taken 27758 panoramic radiographs were evaluated regarding the determining theprevalence of mandibular second premolar migration. Thirty-six radiographs were excluded from the study due to notproviding the inclusion criteria. 27722 radiographs were evaluated retrospectively by the same operator. In the diagnosisof migrated teeth, radiographic features and demographic characteristics were recorded.Results:Nine migrated second premolar teeth were detected in the evaluation of all the radiographs (%0.03). The meanage of the cases was 37 years. All the migrated teeth were impacted, unilateral and the average distance between normaland migrated location was 41 mm. In most of migration case (in 6 case) absence of first permanent molar tooth wasobserved.Conclusion:It is concluded that, if the mandibular second premolar tooth are not located at physiologic position on thedental arch, a panoramic radiographic examination should be recommended to view all the jaws and related structures.Early detection of dental migration may be beneficial to prevent the possible further complications.