The purpose of this study is to evaluate and compare the performance six state-of-the-art convolutional neural network (CNN)-based deep learning models for cervical vertebral maturation (CVM) on lateral cephalometric radiographs, implement visualization CVM classification each model using gradient-weighted class activation map (Grad-CAM) technology. A total 600 radiographs obtained from patients aged 6–19 years between 2013 2020 in Pusan National University Dental Hospital were used study....

In this study, we aimed to develop and evaluate the performance of deep-learning models that automatically classify mesiodens in primary or mixed dentition panoramic radiographs. Panoramic radiographs 550 patients with without were used. Primary included. SqueezeNet, ResNet-18, ResNet-101, Inception-ResNet-V2 each used create models. The accuracy, precision, recall, F1 score ResNet-101 higher than 90%. SqueezeNet exhibited relatively inferior results. addition, attempted visualize using a...

Dental caries are one of the chronic diseases caused by organic acids made from oral microbes. However, there was a lack knowledge about microbiome Korean children. The aim this study to analyze metagenome data obtained children and discover bacteria highly related dental with machine learning models. Saliva plaque samples 120 aged below 12 years were collected. Bacterial composition identified using Illumina HiSeq sequencing based on V3-V4 hypervariable region 16S rRNA gene. Ten major...

The purpose of this study is to develop and evaluate the performance a model that automatically sets region interest (ROI) diagnoses mesiodens in panoramic radiographs growing children using deep learning technology.Out 988 radiographs, 489 patients with were classified as an experimental group, 499 without control group. This consists two networks. first network (DeeplabV3plus) segmentation uses posterior molar space set ROI maxillary anterior radiograph. second (Inception-resnet-v2)...

Background/Objectives: Tooth agenesis (TA) is a developmental anomaly prevalent in humans. It particularly significant children and adolescents because it related to esthetic, physiological, functional problems, including malocclusion, periodontal damage, insufficient alveolar growth. WNT10A mutations have been identified as the main genetic alterations associated with tooth agenesis. Most previous studies investigated patients using single nucleotide polymorphism (SNP) arrays or exome...

This study examined the transverse relationship between maxilla and mandible in children with mixed dentition. The focused on primary second molar permanent first relation to anteroposterior skeletal patterns using cone-beam computed tomography (CBCT). A total of 102 patients from Pediatric Dentistry Department at Pusan Dental Hospital were classified into three groups (Class I, Ⅱ, Ⅲ) based ANB angle (angle formed by A-point-nasion-B-point). CBCT scans analyzed assess dimensions basal bone...

This study analyzed dental treatments under general anesthesia at the Department of Pediatric Dentistry Pusan National University Dental Hospital from 2014 to 2023. The results indicated an increased use anesthesia, primarily for younger patients, highlighting increasing need specialized healthcare professionals in pediatric dentistry. population predominantly consisted male patients and those residing Gyeongsangnam-do province. most common treatment caries was restorative, followed by...

Background: Cemento-ossifying fibroma (COF) is a benign, non-aggressive fibro-osseous tumor in which normal bone replaced by fibrous tissue containing collagen fibers, bone, or cementum-like material. Although COF rare children, its occurrence requires careful management due to potential impact on tooth development and occlusion. Surgical excision the widely used treatment; however, post-operative occlusal guidance crucial, particularly pediatric patients. Case report: This case report...

Background Mesiodens can be associated with several complications. The optimal age for treatment, however, remains controversial. Aim To investigate the three‐dimensional (3D) positions of mesiodens using cone‐beam computed tomography ( CBCT ) and determine association eruption‐related complications these 3D delayed development central incisors. Design In total, 293 Korean children (383 supernumerary teeth) aged 4–10 years no history orthodontic treatment were included. panoramic radiography...

Bone age is a useful indicator of children's growth and development. Recently, the rapid development deep-learning technique has shown promising results in estimating bone age. This study aimed to devise approach for accurate bone-age estimation by focusing on cervical vertebrae lateral cephalograms growing children using image segmentation.We included 900 participants, aged 4-18 years, who underwent cephalogram hand-wrist radiograph same day. First, segmentation was performed from...

Abstract Background The COVID-19 pandemic changed the world and created a shift in dental education program. This sudden change program may have affected academic standards of students. study aimed to evaluate overall satisfaction effectiveness online learning pediatric dentistry undergraduate students’ during South Korea. Methods An anonymous survey was sent three schools, responses were collected from school Questions included demographics, perspectives classes, comparison offline classes...

The aim of the study was to evaluate effects polymeric computer-aided design/computer-aided manufacturing CAD/CAM materials on antagonistic primary tooth wear. Five were examined: Vipi Block Monocolor (VBM), Yamahachi polymethylmethacrylate (PMMA) (YAP), Mazic Duro (MZD), Vita Enamic (ENA), and Pekkton (PEK). All specimens tested in a thermomechanical loading machine with canine as antagonist (50 N, 1.2 × 10⁵ cycles, 1.7 Hz, 5/55 °C). wear losses restorative calculated using reverse...

Medication reviews have become part of pharmacy practice across developed countries. This study aimed to identify factors affecting the likelihood eligible Ontario seniors receiving a pharmacy-led medication review called MedsCheck annual (MCA).We designed cohort using random sample claims for MCA-eligible linked administrative data from April 2012 March 2013. Guided by conceptual framework, we constructed generalized-estimating-equations model estimate effect patient, and community on...

Early tooth loss in pediatric patients can lead to various complications, making quick and accurate diagnosis essential. This study aimed develop a novel deep learning model for classification of missing teeth on panoramic radiographs assess the accuracy. The included aged 8-16 years who visited Pusan National University Dental Hospital underwent radiography. A total 806 were retrospectively analyzed determine presence or absence each number. Moreover, radiograph was divided into four...

Autotransplantation is a potential treatment alternative when orthodontic traction of an impacted tooth difficult. In this article, we describe two cases guided autotransplantation canine using computer-aided designed and manufactured surgical template. The was segmented on preoperative cone-beam computed tomography images to ensure sufficient periodontal ligament space placement the donor with least pressure it. virtually transposed simulation program considering adjacent teeth. template,...

Some resin polymers available for three-dimensional (3D) printing are slightly elastic, which may be advantageous when used full crown coverage of the primary teeth. This study was performed to evaluate mechanical properties two types 3D-printed crowns in terms strength and surface characteristics. Polymer resins temporary (TCs) flexible dentures (TFDs) were tested. Digitally designed with different thicknesses (0.4 0.6 mm) 3D-printed. Milled zirconia as control. The static dynamic fracture...

Bone age determination in individuals is important for the diagnosis and treatment of growing children. This study aimed to develop a deep-learning model bone estimation using lateral cephalometric radiographs (LCRs) regions interest (ROIs) children evaluate its performance. retrospective included 1050 patients aged 4-18 years who underwent LCR hand-wrist radiography on same day at Pusan National University Dental Hospital Ulsan between January 2014 June 2023. Two pretrained convolutional...

본 연구는 영구치열이 완성된 ì²­ì†Œë „ì„ 대상으로, MIH를 포함한 영구치 법랑질 ì €ê´‘í™”ì˜ ìœ ë³‘ë¥ ê³¼ 분포를 ì¡°ì‚¬í•˜ê³ , ì‹¬ë¯¸ì  만족도와의 연관성을 íŒŒì• í• ëª©ì ìœ¼ë¡œ 시도되었다.양산시 거주 14 - 16세 „ 1371ëª ì„ 대상으로 횡단연구가 수행되었다. €ê´‘화는 럽소아치과학회 기준에 의거하여 평가하였다. „치부 심미성에 대한 설문 조사를 병행하여 분석하였다MIH에 이환된 경우는 189ëª...

이 연구에서는 휴대용 ì •ëŸ‰ê´‘í˜•ê´‘ê¸°ì¸ Q-scan을 이용한 구강관리교육이 어린이가 구강관리를 하는데 있어서 얼마나 íš¨ê³¼ì ì¸ 지를 평가하였다.6 - 12세의 어린이 중 치아우식위험도 검사결과 중위험 또는 ê³ ìœ„í—˜ë„ë¡œ 분류된 58ëª ì„ 대상으로 하였다. 대상자들을 Q-scan 사용군(â êµ°)ê³¼ 대조군(â ¡êµ°)의 두 군으로 ë‚˜ëˆ„ê³ , Qray-cam을 이용하여 simple plaque score (SPS)를 평가한 뒤, 동일한...

Preservation of a healthy periodontium is critical for the long-term success restored teeth. In cases extensive caries, tooth fracture, inadequate crown length, and increased esthetic demands, restorative margins need to be placed apical gingival margin. Violation biological width due dental trauma frequently appears in clinical practice. There are three treatment options preserving ferrule effect: lengthening, orthodontic extrusion, surgical extrusion. This case report describes...