Dentistry Commons^™

Evaluation Of Trabecular Bone Around The Impacted Maxillary Canine On Cbct Images By Fractal Analysis, Zeynep Betül Arslan, Berrin Çelik

Journal of Dentistry Indonesia

Objective: The aim of this study was to evaluate the position, angulation and surrounding trabecular bone structure of a unilateral impacted maxillary canine (IMC) tooth using fractal analysis. Methods: Cone beam computed tomography images of 50 patients (38 female, 12 male) with unilateral IMC were selected for this retrospective study. A 25x25 pixel region of interest (ROI) was selected in the trabecular bone between the premolars on the impacted and non-impacted side and fractal analysis was conducted. The angulation of unilateral impacted canines was measured and the position was categorized as vestibular, intra-alveolar and palatal. Results: Of …

Effects Of Micro-Osteoperforations On Maxillary Molar Distalization Using Miniscrew Anchored Pendulum Appliance: A Split-Mouth Randomized Controlled Trial, Mohammed M. Ellaithy, Mohamed Ali Farag, Safa B. Alawy

Al-Azhar Journal of Dentistry

Purpose: This split-mouth trial was designed to assess how Micro-OsteoPerforation (MOP) affected maxillary molar distalization. Material and Methods: This study included sixteen patients with bilateral Class II molar relationship requiring non extraction treatment with bilateral maxillary molar distalization. In the study, a split-mouth design was adopted. A bone anchored pendulum appliance (BAPA) was used for distalization. MOP (the experimental group) was assigned randomly to one side of the maxillary arch, though the other side acted as a control. Three MOPs were carried out distal to the upper first and second molars just prior to starting distalization using Propel at 3, …

Clinical And Radiographic Evaluation Of The Effect Of Different Denture Bases In Implant Supported Mandibular Overdenture Cases, Yasmin S. Zidan, Amany A. Abd El-Fattah, Dina M. Kholief

Al-Azhar Journal of Dentistry

Purpose: To evaluate and compare the effect of CAD/CAM, thermoplastic, and conventional denture bases on denture retention, bone height, and density in implant-supported mandibular overdentures. Materials and Methods: Eighteen completely edentulous patients were selected, and for each patient, two implants were installed at the canine area of the mandible. After the osseointegration period, abutments were installed over the implants, and the patients were divided into three groups. Group I: Six patients received maxillary and mandibular heat-cured acrylic resin dentures. Group II: Six patients received maxillary heat-cured acrylic resin dentures and mandibular dentures with a thermoplastic denture base. Group III: …

Nasal Septum Deviation In Patients With Or Without Impacted Canines, Naurine Shah

All ETDs from UAB

There has been a recent rise in interest for studying the relationship between orthodontic treatment and the airway. Most studies have focused on measuring the oropharyngeal airway and how it is affected by growth with or without orthodontic treatment. The Nasal Septum, a midline structure is an integral part of the anatomy of the nasopharynx. Nasal Septum Deviations (NSD) can be caused by mechanical injuries, nasal polyps, neoplasia, infections, genetic influences as well as congenital malformations. The proximity of the septum can be correlated to changes in the housing of dentition in the naso maxillary complex. Objective: We aim to …

Correlation Of The Initial Bone Height To The Middle Facial Height And The Maxillary Sinus Volume: A Retrospective Study, Mark Bou Chaaya, Gabriel Menassa, Nabil Ghosn, Joyce Nicolas, Nada Naaman

International Arab Journal of Dentistry

This study aims to measure and establish a correlation between the initial bone height (IBH) at the dentate posterior maxillary sextants to the middle facial height (MFH) and the maxillary sinus volume (SV). Thirty CBCTs split evenly between males and females were retrospectively selected and processed to measure the SV and the IBH from the first premolar to the second molar. A clinical measurement was performed on each patient to evaluate the MFH. A significant positive correlation was found between MFH and SV. No significant correlation was found between the IBH of the first premolar and the SV or MFH …

Cone Beam Computed Tomographic Analysis Of Outcomes In Ridge Augmentation Using Titanium Mesh And Titanium Reinforced Ptfe Membranes, Lina Elnakka

Theses and Dissertations

Objective: The primary goal of this study is to evaluate and compare the average vertical and horizontal bone gain between titanium reinforced polytetrafluoroethylene (Ti-PTFE) and titanium mesh (Ti-mesh) using superimposition of preoperative and postoperative (CBCT). The secondary goal is to evaluate and compare the surgical outcomes between the two techniques.

Methods: A retrospective chart review was completed to assess the clinical and radiographic outcomes of patients who underwent ridge augmentation therapy using either Ti-PTFE or Ti-mesh. Preoperative and postoperative CBCT scans were superimposed using InVivo 3D imaging software. Vertical component of the augmented site (L1) was assessed along a vertical …

Assessment Of The Effects Of Edentulousness On Temporomandibular Components By Using Cone Beam Computed Tomography, Büşra Arıkan, Numan Dedeoğlu, Şuayip Burak Duman

Journal of Dentistry Indonesia

Objective: The aim of this study is to evaluate the effects of edentulousness on the temporomandibular joint using cone beam computed tomography (CBCT). Methods: In this study, CBCT images were evaluated in a total of 48 patients (24 dentulous, 24 edentulous). Ninety-six temporomandibular joint CBCT images were examined. Eminence inclination, condyle head widths and joint space were measured and statistically compared between the edentulous and dentulous groups. Results: The articular eminence inclination value the mediolateral width of the condyle and the anteroposterior width of the condyle were found significantly higher in the dentulous group than in the edentulous group. …

Three-Dimensional Evaluation Of The Mandibular Lingula On Cone-Beam Computed Tomographic Images In The Turkish Population, Zerrin Unal Erzurumlu, Damla Torul

Journal of Dentistry Indonesia

Objective: The purpose of this study was to provide morphometric and anatomical data for mandibular lingula (Li) in The Turkish population using three dimensional-cone beam computed tomography (3D-CBCT) images. Methods: CBCT images of the patients taken between July 2020 and March 2021, were retrieved from the archival records. A total of 100 Li’s of 50 patients who met the criteria of this study were evaluated. The distances between the tip of the Li and ramal landmarks/occlusal plane were measured and the shape of the Li was evaluated on 3D-CBCT images. Results: CBCT images of the 50 patients (19 males and …

Superimposition Of Digital Dental Model, Wen-Ting Lin, Yu-Chuan Tseng, Pao-Hsin Liu, Hsuan-Chih Lin, Hong-Po Chang

Taiwanese Journal of Orthodontics

The cephalometric radiography, dental model, intra-oral and extra-oral photos are essential traditional baseline data as orthodontic diagnostic tool to develop a comprehensive treatment plan. With the advent of the digital era, 3D digital dental model will gradually replace the traditional bulky plaster casts, and become an inevitable trend in the future. The purpose of this review article was to discuss about: (1) Digital dental models. (2) Pre-treatment and post-treatment stability of palatal rugae. (3) Via serial 3D digital dental model superimposition registered on palatal rugae and palatal vault, it is feasible to analysis the direction and magnitude of 3D individual …

Accuracy And Reproducibility Of A Manual 3-Dimensional Superimposition Method To Register Dental Model Images To Cone-Beam Computer Tomography (Cbct) Image – A Preliminary Study, Yu-Shu Liao, Sam Sheng-Pin Hsu, Pei-Ju Lin, Chien-Hsuan Wang, Hsiu-Hsia Lin, Dhruv Singhal, Cheng-Hui Lin, Chiung-Shing Huang, Lun-Jou Lo, Ellen Wen-Ching Ko, Yu-Ray Chen

Taiwanese Journal of Orthodontics

Purpose: The purposes of this study was to evaluate the registration error and its reproducibility for implementation of the laser-scanned dental model images onto the CBCT scan data by using the manual 3D superimposition. Materials and methods: Twelve arches out of 8 consecutive patients were enrolled in this study. Both CBCT and dental impression were taken as orthodontic records and the dental casts were then laser-scanned into dental model images with STL file format. In SimPlant OMS software, we register the dental model images onto CBCT teeth images with manual 3D superimposition technique. Afterwards, validation was performed in 3dMDvultus and …

Evaluation Of Gender Difference At Orthodontic Miniscrew Placement Sites In The Mandible: A Cbct Study, Ming-Wei Wei, Yu-Chuan Tseng, Hong-Po Chang, Yi-Hsin Yang

Taiwanese Journal of Orthodontics

Purpose: the purpose of this study is to evaluate mandible bone density and gender difference through three-dimensional images. The Images was captured by cone-beam computer tomography (CBCT) and transfer into DICOM format for further examination. Material and method: CBCT images were obtained from 36 males and 34 females aged from 18 to 40 years. Mandible bone density was measured in 4 sites bilaterally. Inter-gender and intra-class comparison were made to distinguish the difference of acquired data. Result: Bone density measurement of females showed greater bone density at almost all sites but only showing significant difference in left retromolar area (p=0.0067). …

Comparison Of The Accuracies Of Cbct, Radiography, And Four Electronic Apex Locators In Working Length Determination, Merve Yeniçeri Özata, Seda Falakaloğlu, Sadullah Kaya

Makara Journal of Health Research

Background: One of the significant stages during endodontic procedures is determining the correct working length (WL). This study aimed to evaluate the accuracy of four electronic apex locators (EALs) (Root ZX mini, Raypex 6, Propex Pixi, and E-Pex Pro) and cone-beam computed tomography (CBCT) and radiographic measurement in determining the actual WL (A-WL).

Methods: Thirty extracted single-root mandibular premolars were selected and flattened at the crown. The WL was determined by advancing the #15 K file until its tip was visible from the apical, and the A-WL was established by subtracting 0.5 mm from this length. The WL …

Evaluation Of Remaining Dentin Thickness After Manual And Rotary Instrumentation In Primary Molars Using Cone Beam Computed Tomography. (An In-Vitro Study), Nada Ashraf Eldemery, Osama Elshehawy, Rania Abdulla Nasr, Mahmoud Mohammed Badr

Future Dental Journal

Aim: To compare the radicular dentin thickness before and after instrumentation by manual stainless-steel (K-files) versus rotary files (AF™ Baby File) at coronal, middle, and apical thirds using Cone Beam Computed Tomography (CBCT).

Materials and Methods: Forty roots of extracted mandibular primary molars were collected, and randomly and equally divided into 2 groups. Manual Group was prepared by K-files, and Rotary Group was prepared by rotary AF™ Baby File system. Samples were decapitated and stabilized in epoxy resin blocks. Samples were subjected to CBCT scan before and after instrumentation for radicular dentin thickness evaluation at 3 measuring points; apical, …

Cbct Use In Orthodontic Residency Programs In Usa, Su Min Han

Graduate Theses, Dissertations, and Problem Reports

Background and Objectives: Cone beam computed tomography (CBCT) scans in dentistry have been up and coming forms of x-ray technology that allows cross-sectional images to form a comprehensive 3-dimensional representation of the mouth. While the typical use for CBCT imaging is reported to be for implant dentistry, there are many contexts in which it is indicated in orthodontics. There are various schools of thought regarding when CBCT is indicated for specific diagnosis of problems or general use in the collection of initial, progress and post-treatment orthodontic records. There are programs that follow the Radiology guidelines for taking CBCT scans10 and …

Three-Dimensional Maxillary Alveolar Ridge Augmentation Using Modified Cortical Shell Technique And Composite Bone Graft, Mostafa Azab, Mohammed Diaa, Waleed El-Beialy, Amr Amin Ghanem

Future Dental Journal

Objective: The present study was performed to assess the 3D alveolar ridge augmentation using the cortical shell from retromolar region and composite bone particulate regarding the width of the residual alveolar ridge. Methods: Thirteen patients with age range 21-40 years old having atrophic anterior maxillary ridge ≤3mm horizontally were included in the study. All patients were subjected to ridge augmentation using composite bone graft and retromolar cortical shell that was fixed in place by two micro-screws. The alveolar ridges were assessed and compared by cone beam computed tomography (CBCT) in the pre-operative, immediate and 4 months post-operative phases by taking …

The Influence Of Cbct-Derived 3d-Printed Models On Endodontic Microsurgical Treatment Planning And Confidence Of The Operator, Shreyas Oza, Johnah C. Galicia

Orthodontics and Endodontics Theses

Aims Use of 3D printed models in Endodontics has been gaining popularity since the technology to create them became more affordable. Currently, there are no studies that evaluate the influence of 3D models on endodontic surgical treatment planning and on operator confidence. Therefore, aims of this study were to: (i) Determine whether the availability of a 3D printed analogue can influence treatment-planning and operator confidence; and, (ii) Assess which factors of operator confidence are influenced, if any.

Materials and Methods Endodontists were asked to analyze a pre-selected CBCT scan of an endodontic surgical case and to answer a questionnaire that …

Comparison Of Shaping Ability Between Continuous Rotary And Manual Instrumentations In Pediatric Endodontics, Burcu Güçyetmez Topal, Seda Falakaloğlu, Hatice Türkoğlu

Journal of Dentistry Indonesia

Objective: The aim of this in vitro study was to evaluate the efficacy of rotary EndoArt Ni-Ti Gold Pedo Kit and K-files in shaping ability, canal transportation, centering ability and instrumentation time in primary molars.

Methods: For the study total of 30 extracted primary molars root with minimum 7mm root length were selected. Shaping of root canals in primary molars were done using the two systems, and CBCT and specialized software were used for scanning and analysis of pre-operative and post-operative to evaluate the groups for their shaping properties, apical transportation and preparation time in primary root canals.

Results: No …

A Cbct Based Evaluation Of Root Proximity Of Maxillary Posterior Teeth To Sinus Floor In A Subset Of Pakistani Population, Momina Motiwala, Aysha Arif, Rabia Ghafoor

Section of Dental-Oral Maxillofacial Surgery

Objective: To evaluate the vertical relationship of the roots of maxillary posterior teeth with maxillary sinus floor, and its association with age, gender and bilateral jaw symmetry.
Methods: The cross-sectional study was conducted at a tertiary care hospital in Karachi from June to December 2018, and comprised patients who visited the dental clinics and underwent cone-beam computed tomography scans. The scans were evaluated in the axial, coronal and sagittal planes and roots were classified using Jungs classification for proximity to maxillary sinus floor. The distance between the sinus floor and the apices of maxillary posterior teeth was measured. Data was …

Accuracy And Reliability Of A Fully Automated Landmark Identification System On Cone Beam Computed Tomography, Ali Ghowsi, David Hatcher, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

ABSTRACT Introduction: Medical imaging continues to play an increasing role in health care and is an integral part of medicine and dentistry. Recent technological advancements have led to the development of fully automated landmark identification (ALI) systems capable of tracing Cone-Beam Computed Tomography (CBCT). The purpose of this study was to evaluate the accuracy and reliability of an ALI system as a tool for automatic landmark location compared to human judges. Methods: One hundred subjects’ CBCT volumes from multiple imaging centers were traced by two human judges who were calibrated and had an ICC close to 1. Fifty-three landmarks were …

Comparing The Sensitivity And Specificity Of Cbct And Mri In Detecting Osteoarthritis Of The Tmj: A Systematic Review, Gabriel R. Saavedra

Theses and Dissertations

The aim of this systematic review was to compare the sensitivity and specificity of cone-beam computed tomography (CBCT) and magnetic resonance imaging (MRI) in detecting osteoarthritis (OA) of the temporomandibular joint (TMJ). This was done by using computed tomography (CT) and the research diagnostic criteria for temporomandibular disorders (RDC/TMD) as reference methods and using CBCT and MRI as index methods. A specific search strategy was developed and applied to these electronic databases: PubMed, Embase, DOSS, and Cochrane. The search results returned 802 articles, which were then narrowed down using the inclusion/exclusion criteria, to four final articles that were included in …

An Airway Analysis Of Patients Diagnosed With Juvenile Idiopathic Arthritis Compared To A Control Group, Matt Gibson

All ETDs from UAB

Introduction: The temporomandibular joint (TMJ) is affected in 30-45%% of Juvenile Idiopathic Arthritis (JIA) patients, with all JIA subtypes at risk for TMJ involvement. JIA patients with TMJ involvement may present with altered craniofacial morphology, including micrognathia, mandibular retrognathia, a hyperdivergent mandibular plane angle, and skeletal anterior open bite. These features are also commonly present and associated with non-JIA pediatric patients with obstructive sleep apnea (OSA). Materials and Methods: The study comprised of a group of 32 JIA patients and a group of 32 healthy control subjects. CBCT images were taken for all patients and were imported into Dolphin Imaging …

Outcomes Of Unilateral Alveolar Clefts Grafted Using Recombinant Human Bone Morphogenetic Protein-2: A Retrospective Volumetric Analysis Using Cbct, Landon Robert Peterson

Theses & Dissertations

Purpose of this study is to evaluate the success rates of secondary alveolar grafts using recombinant human bone morphogenetic protein with CBCT and to evaluate the effects of several variables on these outcomes. After our inclusion/exclusion criteria, records of 24 patients receiving secondary alveolar grafts at the University of Nebraska Medical Center were evaluated. Pre-graft and 6-month post-graft cleft volumes were measured using ITK-SNAP 3.8.0 software to determine a percent residual defect following surgery. Of the 24 patients, one was excluded as the graft surgery was deemed a failure. The patients’ gender, age, side of cleft, cleft side canine root …

Radiographic Evaluation Of Bone And Mucosa Using Low-Dose Cbct With Radiopaque X-Resin Stent Versus Ct And Ridge Mapping: A Validity Study, Enji Ahmed, Nader Nabil Riskallah, Mushira Muhammed Dahaba, Eman Abdelaziz Ahmed

Dentistry

Aim: To compare the abilities of computed tomography (CT), cone beam computed tomography (CBCT) with X-resin and ridge mapping and to measure the thickness of bone and soft tissue during implant planning, which allows increasing the success criteria of implant placement. Materials and Methods: This validity study included a total of 96 samples chosen from 20 patients undergoing implant surgeries (mandible and maxilla) aged between 25 and 50 years. Measurements of bone and mucosa were done by using three techniques, which are the CT, CBCT with X-resin, and finally ridge mapping at 4 points that are 3, 4, 5, and …

Oropharyngeal Airway Changes Following Orthodontic Treatment Of Anterior Open Bite In Growing Vs Non-Growing Patients, Mona Awadi, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: Orthodontic treatment of anterior open bite can result in a counter-clockwise rotation of the mandible and a more ideal forward position of the tongue. Usually this movement is thought to increase the oropharyngeal airway. The primary aim of the present study was to evaluate changes in vertical dimension and airway in AOB patients following orthodontic treatment. Methods: 52 subjects were included in this retrospective study of anterior open bite malocclusion treated in the graduate orthodontics clinic at the University of the Pacific, Arthur A. Dugoni School of Dentistry between 2006 – 2019. Cephalometric and airway measurements were done by …

Comparison Of Skeletal And Dental Differences Between Class I And Class Ii Sides And Their Relationship With Asymmetric Molar Relationships In Class Ii Subdivision Malocclusions – A Cbct Study, Ivan Lo, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: The purpose of this study is to compare dental and skeletal differences between Class I and Class II sides and their contributions to the degree of asymmetric molar relationship in Class II subdivision malocclusions using CBCT.

Methods: One hundred and eight patients presenting with Angle Class II subdivision malocclusions (mean age =21.05 years) were assessed with 3-dimensional cone-beam computed tomography scans. Paired t-tests were used to compare linear skeletal, angular and dental measurement differences between Class I and Class II sides. Correlations of linear skeletal, angular and dental measurement differences between Class I and Class II sides were made …

Prevalence Of Short Root Anomaly In Patients Seeking Orthodontic Treatment, Tim Howarth, James Chen, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: The purpose of this study was to investigate variance in prevalence and severity of short root anomaly (SRA) in patients seeking orthodontic treatment, stratified by ethnicity and sex. Materials and Methods: In this retrospective cross-sectional study, we evaluated 896 patients who had initial cone-beam computed tomographies (CBCTs) taken from July 1, 2014 to May 30, 2019. Panoramic radiographs and images from the CBCTs of each patient were extracted and placed in a database. The crown-to-root ratio of maxillary central incisors, lateral incisors, canines, and all pre-molars were evaluated to determine the presence, severity and associations of SRA. A Chi-square …

Soft Tissue Effects From Maxillomandibular Advancement With Counterclockwise Rotation, Timothy Yu, Audrey Yoon, Stanley Yung Chuan Liu, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: The purpose of the study was to evaluate the effects of maxillomandibular advancement (MMA) surgery with counterclockwise rotation on soft tissue oral and nasal structures. Materials and Methods: This retrospective study included 34 subjects diagnosed with OSA who underwent MMA at the Stanford Sleep Clinic. Initial (T1) and Final (T2) CBCTs were evaluated and compared for 10 hard tissue and 15 soft tissue measurements. Additionally, the external nasal valve surface area was measured and compared between the two time points. A 3D superimposition was performed and used to evaluate the relative hard and soft tissue movements. Results: There was …

Comparison Of Endodontic Treatment Planning Decisions Using Cone Beam Computed Tomography Versus Periapical Radiography In Previously Endodontically Treated Molars, Sarah Alkanderi

Theses and Dissertations

Objectives: The aim of this study was to determine if treatment plans differ when evaluating previously endodontically treated molars using periapical images (PA’s) alone versus PA’s and CBCT.

Methods: A retrospective cohort chart review was conducted including 67 previously treated molars that had a CBCT taken. Two calibrated board-certified endodontists evaluated standard PA’s. A data sheet questionnaire regarding radiographic findings and treatment plan decisions was completed. Two weeks later, the same steps were repeated but the examiners evaluated both PA’s and CBCT images and again arrived at a recommended treatment plan.

Results: Agreement between raters was assessed with Cohen’s Kappa …

Radiographic Evaluation Of Bone And Mucosa Using Low-Dose Cbct With Radiopaque X-Resin Stent Versus Ct And Ridge Mapping: A Validity Study, Enji Ahmed Mahmoud, Nader Nabil Rizkallah, Eman Abdelaziz, Mushira Mohamed Dahaba

Dentistry

No abstract provided.

Comparison Of Skeletal And Dentoalveolar Changes Between Two Bone-Borne Maxillary Expanders, Mohamad Sarraj

Graduate Theses, Dissertations, and Problem Reports

Introduction: Bone-borne maxillary expander (BBME) are designed to provide additional anchorage to widen the maxillary arch for patients who exhibit maxillary transverse deficiency. One form of BBME is the hybrid BBME which uses mini-implants (bone-borne) and posterior teeth (tooth-borne) as anchorage for maxillary expansion. The other form of BBME is absolute BBME which only uses mini-implants as anchorage. It is not clear in the literature if there is a difference in skeletal and dental changes with these two types of expanders. The objective of this study was to compare the skeletal, dentoalveolar, and periodontal changes between the hybrid and the …