Purpose: This study was performed to investigate the incidence and configuration of bifid mandibular canal in a Korean population by using cone-beam computed tomography (CBCT) imaging.Materials Methods: CBCT images 1933 patients (884 male 1049 female) were evaluated PSR-9000N Alphard-Vega 3030 Dental CT units (Asahi Roentgen Ind. Co., Ltd, Kyoto, Japan).Image analysis OnDemand3D software (CyberMed Inc., Seoul, Korea).The identified classified into four types, namely, forward canal,...

This study was designed to develop and verify a fully automated cephalometry landmark identification system, based on multi-stage convolutional neural networks (CNNs) architecture, using combination dataset. In this research, we trained tested CNNs with 430 lateral MIP cephalograms synthesized by cone-beam computed tomography (CBCT) make Fifteen landmarks were manually respectively identified experienced examiner, at the preprocessing phase. The intra-examiner reliability high (ICC = 0.99)...

This study evaluated dental caries detection ability between the Qraycam and Qraypen on same lesions. A total of 178teeth from 61patients were imaged using C®(QC) Pro®(QP) devices analysis software (QA2). Occlusal, secondary, proximal scored according to International Caries Detection Assessment System(ICDAS II) X-ray criteria. Bland-Altman plots used compare quantitative light-induced fluorescence(QLF) parameters obtained different QLF devices. Sensitivity, specificity, area under receiver...

The positions of the mandibular foramen (MnF) and lingula affect success rate inferior alveolar nerve block. objective this study was to investigate aspects MnF relevant for block anesthesia using cone-beam computed tomography (CBCT).Fifty CBCT scans were collected from a picture archiving communications system. All taken an Alphard Vega 3030 (Asahi Roentgen Co. Ltd., Kyoto, Japan). Fifty-eight MnFs 30 subjects included in study. position MnF, size lingula, shape measured recorded. data...

The aim of this study was to present an optimal diagnostic protocol by comparing and analyzing a conventional examination the quantitative light-induced fluorescence (QLF) technique. Selected were 297 teeth 153 patients take QLF images bitewing radiographs. Occlusal dental caries, proximal caries cracks evaluated scored using QLF, X-ray and/or visual criteria. sensitivity, specificity, area under curve (AUC) receiver operating characteristic analysis calculated. Two parameters (|ΔFmax|...

Objective: To evaluate the accuracy of a multi-stage convolutional neural network (CNN) model-based automated identification system for posteroanterior (PA) cephalometric landmarks.Methods: The CNN model was implemented with personal computer.A total 430 PA-cephalograms synthesized from cone-beam computed tomography scans (CBCT-PA) were selected as samples.Twenty-three landmarks used Tweemac analysis manually identified on all CBCT-PA images by single examiner.Intra-examiner reproducibility...

Background Proton pump inhibitor use is associated with incident chronic kidney disease, disease progression and end-stage renal disease. However, the extent of proton prescriptions to patients still unclear. Method In a retrospective study, we enrolled (>18 years old) who received in out-patient setting from 2014 through 2015. All data was obtained electronical medical records Soonchunhyang Medical Center. The prescription patterns characteristics inhibitors were analyzed according...

Accurate bracket placement is essential for successful orthodontic treatment. An indirect bonding system (IDBS) has been developed to ensure proper positioning with three-dimensional computer-aided transfer jigs. The purpose of this study was investigate the accuracy by a one-body jig according tooth type and presence/absence resin base. In total, 506 teeth from 20 patients were included in study. After initial dental models scanned, virtual setup procedures performed 3D software. Transfer...

To evaluate three-dimensional (3D) craniofacial changes induced by a non-surgical tooth-bone-borne rapid palatal expander (TBB-RPE) according to the symmetrical pattern of expansion, investigate 3D between sides in patients with asymmetric and identify related factors expansion.Sixty-six (mean age: 19.3 ± 5.7 years) treated TBB-RPE were divided into symmetric expansion group (Group S, n = 46) or A, 20). Group S was subdivided Ss (n 27), bilateral frontomaxillary suture (FMS) split, Sn 19),...

Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare carcinoma, which arises within the jaws without connection to oral mucosa and presumably develops from remnant of odontogenic epithelium.We present case solid type PIOSCC in 52-year-old male patient complaining dull pain on his left lower molar.In this case, early stage mimicking periapical lesion might lead one-year delay treatment due misdiagnosis osteomyelitis after extraction third molar.The clinical, radiological,...

This study was performed to investigate the influence of object shape and distance from center image on volumetric accuracy cone-beam computed tomography (CBCT) scans, according different parameters tube voltage current.Four geometric objects (cylinder, cube, pyramid, hexagon) with predefined dimensions were fabricated. The consisted Teflon-perfluoroalkoxy embedded in a hydrocolloid matrix (Dupli-Coe-Loid TM; GC America Inc., Alsip, IL, USA), encased an acrylic resin cylinder assembly. An...

The purpose of this study was to evaluate vertical bone loss and alveolar thickness in the maxillary mandibular incisors patients with skeletal class III malocclusion. This also aimed periodontal condition malocclusion who had not undergone orthodontic treatment.The sample included cone-beam computed tomography scans 24 Korean subjects (3 male 21 female). Alveolar (ABT), area (ABA), (ABL), fenestration were measured using 3-dimensional imaging software.All displayed an ABT less than 1.0 mm...

Abstract Some craniofacial diseases or anatomical variations are found in radiographic images taken for other purposes. These incidental findings (IFs) can be detected orthodontic patients, as various radiographs required diagnosis. The data of 1020-orthodontic patients were interpreted to evaluate the rates IFs three-dimensional (3D) cone-beam-computed tomography (CBCT) with a large field view (FOV) and investigate effectiveness accuracy two-dimensional (2D) detecting compared CBCT....

Purpose: This study was performed to evaluate the feasibility of visualizing soft tissue lesions and vascular structures using contrast-enhanced cone-beam computed tomography (CE-CBCT) after intravenous administration a contrast medium in an animal model.Materials Methods: CBCT on six rabbits administered injection dose 2 mL/kg body weight rate 1 mL/s via ear vein or femoral under general anesthesia.Artificial were created through transplantation autologous fatty into salivary gland.Volume...

To identify the most favorable sites that optimize initial stability and survival rate of orthodontic mini-implants, this study measured hard soft tissue thicknesses in median paramedian regions palate using cone-beam computed tomography (CBCT) determined possible sexand age-related differences these thicknesses.The sample comprised CBCT images 189 healthy subjects. The was divided into four groups according to age. A grid area set for measurement palate. Vertical lines were marked at...

The aim of this preliminary study was to evaluate the short-term changes occlusal contacts and muscle activity after orthodontic treatment during use a multi-layer clear retainer. Evaluation done with T-scan BioEMG systems. A total 18 subjects were included, who evaluated at three time intervals—T0 debonding, T1 one month retainer delivery, T2 four months delivery. electromyography (EMG) data recorded simultaneously. system occlusion time, disclusion force distribution. EMG waves quantified...

Molar Incisor Malformation (MIM) or Root malformation (MRIM) is a recently discovered root with constricted pulp and abnormally located furcation presented in permanent first molars sometimes incisors.Two cases that feature MIM are the description of characteristic tooth form, clinical/radiographic examination, medical history, supposed aetiology, treatment procedure results at 2-year follow-up. Conservative endodontic was performed both cases, perforation canal were filled MTA (Mineral...

Osseointegrated implants are now commonplace in contemporary dentistry. However, a number of complications can occur around dental implants, including peri-implantitis, maxillary sinusitis, osteomyelitis, and neoplasms. There have been several reports malignant neoplasm occurring adjacent to implant. In this report, we describe 2 such cases. One case was that 75-year-old man with no previous history disease who developed solitary plasmacytoma implant the left posterior mandible, other...