Orthodontics and Orthodontology Commons^™

Trimming And Ph Effects On Nickel Ion Release From Stainless Steel Crowns Of Primary Teeth, Milad Arab-Nozari, Mohammad Shokrzadeh, Nastaran Zamehran, Jamshid Yazdani Charati, Azam Nahvi

Journal of Dentistry Indonesia

Objective: Stainless steel crowns (SSCs) are preformed metal crowns used to restore severely decayed primary teeth. The aim of this study is to evaluate the effects of pH changes and SSC margin trimming on nickel release in artificial saliva solution. Methods: A total of 90 SSCs were divided into three groups and placed in 35 ml of artificial saliva of pH 6.8, 5, and 3.5. Another group consisting 30 SSCs with trimmed margins was placed in saliva of pH 6.8. All SSCs were incubated at 37°C. The concentration of released nickel was assessed on days 1, 7, 14, 21, and …

Evaluation Of Maxillary Impacted Teeth And Their Relationship With Adjacent Teeth And Anatomic Structures With Cone Beam Computed Tomography, Emre Köse, Emin Murat Canger

Journal of Dentistry Indonesia

Objective: This study aimed to examine the cone beam computed tomography (CBCT) images of impacted maxillary canines and mesiodentes. Methods: This retrospective radiographic study was performed on 177 patients with 200 impacted maxillary canines and 12 mesiodentes. Using CBCT images, the unilateral/bilateral occurrence, presence of root dilaceration, mesio-distal and buccopalatal location, impaction condition, contact region of adjacent teeth, presence and degree of root resorption of adjacent teeth, dental follicle width, closest distance to the nasal cavity, nasopalatinal canal, and maxillary sinus were assessed. For mesiodentes, the types, follicle width, direction, and relationship with anatomical structures were evaluated. Results: No statistical …

Effect Of Craniofacial Growth Pattern On Head Posture, Burak Kale, Muhammed Hilmi Buyukcavus

Journal of Dentistry Indonesia

Head posture refers to the upright position of the head of a standing or sitting subject. The literature reports that head posture is affected by many factors. Objective: To evaluate differences in head posture according to craniofacial growth pattern. Methods: A total of 163 individuals (83 females and 80 males) were included in this study. Patients were divided into three groups according to ANB angle as Class I, Class II, and Class III, and each group was divided further into three subgroups according to SN/GoGn angle as hyperdivergent, normodivergent, and hypodivergent. The patients were compared in terms of head posture …

Comparative Evaluation Of Apical Extrusion Debris And Irrigant During Calcium Hydroxide Removal And Endodontic Instrumentation Using Three Types Of Instrumentation Systems, Selen İnce Yusufoğlu, Esma Saricam

Journal of Dentistry Indonesia

Many root canal preparation techniques and instruments produce apically extruded materials to a certain extent depending on the preparation system adopted. The extrusion of debris from the apical foramen during chemomechanical preparation may cause postoperative pain and failure of endodontic treatment. Objective: This study evaluates the differences in the apical extrusion of debris and calcium hydroxide (CH) during endodontic instrumentation by using Reciproc Blue (RB), WaveOne Gold (WOG), and F6 Skytaper (F6). Methods: Six experimental study groups (n = 13) were established. The root canal procedures for all groups were prepared with different methods: Group I: One Shape (OS) instrumentation, …

Reliability Of Panoramic Radiography For Vertical Facial Pattern Assessment, Waqar Jeelani, Maheen Ahmed, Shakeel Ahmed

Journal of Dentistry Indonesia

The orthopantomogram (OPG) is a common dental screening radiograph that has multiple implications. However, lateral cephalogram is the investigation of choice for the assessment of vertical facial pattern. Objective: The aim of the current study was to investigate the validity of an OPG parameter i.e. panoramic gonial angle (PGoA) for the assessment of the vertical facial pattern. Methods: A cross-sectional study was conducted on the pretreatment OPG and lateral cephalograms of 200 orthodontic patients aged 15-40 years. The PGoA was measured on both sides and an average was used for statistical analysis. The Pearson’s correlations of PGoA were measured with …

Effect Of Salivary Ph On Water Absorption And Solubility Of Enhanced Resin- Modified Glass Ionomer, Yosi Kusuma Eriwati, Muhammad Dhiaulfikri, Ellyza Herda

Journal of Dentistry Indonesia

The influence of immersion period and liquid pH on water absorption capacity and solubility of the resin-modified glass ionomer cement (RMGIC) raises the question of whether the critical pH of hydroxyapatite and fluoroapatite influences the water absorption capacity and solubility of enhanced resin-modified glass ionomer (ERMGI). Objective: This study was designed to investigate the effects of immersion periods and various pH levels of artificial saliva on the water absorption and solubility of RMGIC and ERMGI. Methods: Fifty-four disc-shaped specimens (15 mm x 1 mm) of enhanced RMGI (ACTIVATM BioACTIVE-RESTORATIVE, Pulpdent, Watertown, MA, USA) and 54 disc-shaped specimens (15 mm x …

Inflammatory Cytokine Expression Of Immune Cells On Exposure To Invisalign® Material: An In Vitro Pilot Study, Alaina M. Allen

Theses & Dissertations

The purpose of this study is to characterize the inflammatory cytokines that are expressed in peripheral blood mononuclear cells (PBMCs) and THP-1 monocytes exposed to Invisalign^® aligner material in vitro. Invisalign^® material was ground into particles, soaked in artificial saliva, and the eluate was collected. Commercially available cryopreserved pooled and individual human PBMCs and THP-1 monocytes were cultured with Invisalign^® material eluate and positive (lipopolysaccharide) and negative controls. The supernatants were collected and used with a BioLegend LEGENDplex^™ multi-analyte flow assay, a sandwich enzyme-linked immunosorbent assay (ELISA), to identify the expression of TNF-α, IL-6, IL-8, IL-10, …

Stress Relaxation In Orthodontic Aligner Plastics; An In Vitro Comparison Study, Kristopher J. Keller

Theses & Dissertations

The purpose of this study was to ascertain if repeated stresses from extension cycling would result in accumulated damage in aligner materials and affect force delivery. A secondary goal was to identify potential differences in mechanical behavior present among orthodontic aligner polymers. Four thermoplastic polymers (Essix ACE, Taglus, Zendura, and Zendura FLX) were thermoformed, cut into strips, and extension cycled to 0.4 millimeters in a 37C water bath. Force decay, maximum and minimum force, and elastic modulus were measured during cycling. Additional samples were subjected to controlled tension until failure, allowing the measurement of yield strength, ultimate strength, and elastic …

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 …

Non-Surgical Correction Of Craniofacial Microsomia With Occlusal Plane Canting, Tzu-Pin Su, Huei-Mei Tsai, Chia-Yi Pan, Yuen-Yung Tsang, Yu-Ling Cheng

Taiwanese Journal of Orthodontics

An adult woman suffered moderate complications of cranio-facial microsomia (CFM) with different severity on both sides of the face. This anomaly leads to short ramal height, condylar pathology, chin deviation and facial asymmetry. The malformed dental arch, open bite and severe canting of the occlusal plane were the reasons for the patient to request the therapy. Orthodontic treatment was performed with pre-adjusted edgewise system assisted by temporal anchorage devices (TADs). These modalities were executed through leveling of the occlusal plane. The improvement was noticed for both better oral function and esthetics.

Vertical Maxillary Excess Complicated With Mutilated Dentition Treated By An Interdisciplinary Approach, Shao-Ching Su, Huei-Mei Tsai, Ming-Jeaun Su, Yi-Min Liu

Taiwanese Journal of Orthodontics

Vertical skeletal dysplasia can lead to excessive lower facial height and maxillary teeth elongation with gum exposure. Patients usually have long face, steep mandibular plane angle, usually with mandibular retrognathism. The clinical manifestations include narrow nose, narrow upper dental arch, excessive incisal display, a significant backward and downward rotated mandible as well as vertical maxillary excess (VME). Traditional classifications which mainly based on sagittal jaw relation is inadequate in describing the vertical skeletal discrepancy. The patient also suffered from multiple missing posterior teeth, that requires an interdisciplinary dental care. The main treatment objectives are to normalize overjet and overbite, improve …

Surgery First And Atypical Extraction For A Skeletal Class Iii With Severe Anterior Open Bite And Severe Crowding— Three-Year Stability, Sutthinee Ruschasetkul, Thatchawee Borikanphanitphaisan, Yi-Chin Wang

Taiwanese Journal of Orthodontics

This case report features a successful combined surgical-orthodontic treatment of a patient with skeletal Class III malocclusion with severe anterior open bite and severe mandibular crowding. Clinical examination revealed concave profile with long-face deformity caused by retrognathic maxilla and excessive vertical growth of mandible, maxillary crowding despite absence of maxillary first premolars, mandibular incisor retroclination, deep curve of Spee, and blocked-out mandibular canines. The treatment involved surgery-first approach with extraction of lower right first premolar and atypical extraction of lower left canine due to its poor periodontal support. Harmonized facial profile, pleasing smile, good occlusal interdigitation as well as skeletal …

Clinical Effectiveness Of Using Clear Aligners In Orthodontic Treatment, Chih-Ling Lin, Yi-Chin Wang, Yuh-Jia Hsieh, Yun-Fang Chen, Yu-Chih Wang

Taiwanese Journal of Orthodontics

Purpose: To assess the clinical treatment effectiveness of clear aligners in orthodontic tooth movements.

Methods: The database of Cochrane Central Register of Controlled Trials, Embase, PubMed, Web of Science, and Scopus were searched from Jan 2015 to Jan 2020. The National Institute for Health and Clinical Excellence assessment tool was used for the methodological quality of included studies.

Results: The literature review yielded 166 articles after removal of duplicates, and an additional 2 articles were included from hand search of the bibliographies of included articles and relevant reviews. Fifteen studies were included in the systematic review. One study was randomized …

Effect Of Angular Insertion Of Orthodontic Miniscrews On Primary Stability, Prajak Jariyapongpaiboon, Jirawan Chartpitak

Taiwanese Journal of Orthodontics

Purpose: Infrazygomatic crest (IZC) miniscrews have useful clinical applications. They are applied with angular insertion to the bone surface. However, appropriate angles for the maximum stability of the miniscrew have not yet been well documented. This study aimed to compare the primary stability of different angles of orthodontic miniscrew insertion by analyzing maximum insertion torque (MIT) and pull out strength (PS).

Materials and methods: Sixty miniscrew implants were divided into 3 groups which underwent different angular insertion, with 20 samples in each group. Three pairs of bearing devices were constructed with an angulation of 30, 40 or 50 degrees. An …

Persistent Palatal Hypertrophy Associated With Rapid Maxillary Expansion Procedure: Report Of A Rare Case, Mehmet Melih Omezli, Damla Torul, Tolunay Avci

BioMedicine

Maxillary transversal deficiency (MTD) is a common skeletal problem. If not treated on time, MTD evolve to a more complex malocclusion. This problem can affect facial growth and development. Rapid maxillary expansion (RME) procedure frequently used for the management. This technique is usually successful in young individuals but as the age advances and the articulations of the maxilla with surrounding facial bones get more rigid, it becomes ineffective. Undesirable side effects or results have been reported after use of RME in skeletally mature patients such as buccal tipping of posterior teeth, extrusion, periodontal tissue recession, fenestration of buccal cortex, necrosis …

Patient And Parent Perceptions On Outcomes In Early Orthodontic Treatment, Joseph Phillips, James Chen

Orthodontics and Endodontics Theses

Introduction: Orthodontics has clinical benefits, however, the psychosocial outcomes are not well understood. These soft benefits are often classified as aesthetic, functional, and psychosocial, however, there is limited work understanding these outcomes as reported directly from the patient. By better understanding the patient’s perspectives, we can continually refine our clinical model to be patient-centric and more appropriately manage the patient’s expectations and experiences. Materials and Methods: This is a cross-sectional qualitative study of 20 parents of 24 children ages 8-11 years. Participants were remotely interviewed using a semi-structured chronologically based line of questioning to elucidate their perceived outcomes of early …

Efficiency And Effectiveness Of Arch Expansion With Corticotomy-Assisted Clear Aligner Therapy, Thomas Roblee, Robert R. Boyd, James Chen, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: Surgically Facilitated Orthodontic Therapy (SFOT) has been utilized for years to overcome the limitations encountered with traditional orthodontic treatment of dentoalveolar and alveoloskeletal malocclusions. The procedure, which consists of full flap corticotomies and bone grafting, has many proposed benefits including increased speed and range of tooth movement. The purpose of this study is to evaluate arch expansion in patients treated with SFOT and clear aligners. Materials and Methods: A retrospective cohort study design was used to evaluate 51 consecutive adult patients that were treatment planned for significant arch expansion with corticotomies, bone grafting, and clear aligners. 17 of the …

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 …

Prediction Of Class Iii Treatment Need And Success, Andrew Levin, James Chen

Orthodontics and Endodontics Theses

Objective: The purpose of the present study is to develop prognostic models for surgical need and treatment success for class III malocclusions. Material and Methods: This is a retrospective cohort study that evaluated treatment outcomes of consecutively treated patients at UCSF from Jan 1st 2007-Jan 1st 2012 and UoP from May 1st, 2014 – May 1st 2019. Receiver operator curves were used to develop prognostic models for surgical need and treatment success for class III malocclusions. Predictor variables were selected a priori (Class III-WITS, U1-PP, IMPA). The prognostic models were validated first using a UCSF validation cohort to show consistency …

Invisalign First: A Qualitative Study On The Perceived Benefits And Drawbacks Of Invisalign First As A Treatment Modality For Mixed Dentition Patients, Erin Walker, James Chen

Orthodontics and Endodontics Theses

Given the recent implementation of Invisalign First for early interceptive orthodontic treatment, a limited number of orthodontists have had experience with this treatment modality and there currently are no published studies on the topic. The present study aims to use a qualitative survey to identify common themes in providers’ perceptions of Invisalign First as a new treatment option for early interceptive orthodontics. Twenty-three orthodontists in the private practice sector voluntarily participated in an open-ended survey via email. The results of the survey indicate the following common themes in regards to benefits of Invisalign First: fewer emergencies, patient comfort, patient experience, …

Association Of Type And Severity Of Nonsyndromic Orofacial Clefts With Combined Genotypes Of Rfc1 80 Ga, Mthfr 677 Ct, Irf6 (Rs642961) And Irf6 (Rs2235371) Gene Polymorphisms In An Indian Population, Chantal Hakim Dds, Msd, Marie M. Tolarová Md, Phd, Drsc, Miroslav Tolar Md, Phd

Orthodontics and Endodontics Theses

Association of type and severity of nonsyndromic OROFACIAL CLEFTS with combined genotypes of RFC1 80 GA, MTHFR 677 CT, IRF6 rs642961 and rs2235371 gene polymorphisms in an Indian population Abstract By Chantal Hakim University of the Pacific. Arthur Dugoni School of Dentistry 2020 Introduction. Genetic etiology of nonsyndromic orofacial clefts comprises many genes acting together. However, little is known about their interactions. The purpose of our study was to analyze associations of phenotypic subtypes of nonsyndromic orofacial clefts with combinations of four genotypes involving candidate gene polymorphisms. Materials and Methods. We analyzed a large dataset of cases and controls collected …

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 …

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 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 …

A Comparison Of The Area Of The Internal Nasal Valve In Cbct And Mri, Chantelle Ghiam

Loma Linda University Electronic Theses, Dissertations & Projects

Objective: This study compared the agreement between whole head Cone-Beam Computed Tomography (CBCT) and 3T Magnetic Resonance Imaging (MRI) methods to assess the cross-sectional area of the internal nasal valve.

Methods: Thirteen human subjects (mean age 15y11m) were used in this study. All scans were preformed [sic] within two weeks of one another. CBCT images were made with an 18x16 inch field of view, exposure time of 5.4 s, and resolution of 0.3x0.3x0.3 mm. 3T MR images were captured as contiguous sagittal images of the whole head with a T1-weighted 3D imaging sequence (Magnetization Prepared Rapid Acquisition by …

Attitudes And Understanding Of Orthodontic Treatment Using Comic Vs. Text Format, Darron Miya

Loma Linda University Electronic Theses, Dissertations & Projects

Objectives: To examine adolescent patient attitudes and understanding of basic orthodontic treatment information presented in either comic book format or plain text.

Methods: This study involved subjects undergoing orthodontic treatment at the Loma Linda University Graduate Orthodontic Clinic. Subjects were randomly assigned to two groups: Group 1 subjects received an orthodontic comic book to read, while Group 2 subjects received a plain text information sheet containing the same pertinent information as Group 1. All subjects completed an identical survey regarding the material they read. Statistical analysis consisted of a chi-square test at α = 0.05 to determine potential …

Nanomaterials And Nanorobotics In Dentistry: A Review, Yelda Kasimoglu, Derya Tabakcilar, Zeynep A. Guclu, Seiko Yamamoto-Nemoto, Elif B. Tuna, Bugra Ozen, Tamer Tuzuner, Gökhan Ince

Journal of Dentistry Indonesia

Nanotechnology is a branch of science focusing on the manipulation of materials measured on the nanoscale (size = 1–100 nm). Recent advances in the field of nanodentistry have resulted in the development of alternative treatment plans for common dental problems, bringing about a paradigm shift in dentistry. Nanorobots, also known as “nanites” or “nanomachines,” are theoretical microscopic devices that may be used for the diagnosis and treatment of oral health problems. This paper aims to discuss the latest innovations in the field of nanodentistry.

Effect Of Short- And Long-Term Use Of Home And In-Office Bleaching With Carbamide Peroxide And Hydrogen Peroxide On Enamel Microhardness, Nazila Ameli, Niloofar Kianvash Rad, Farzane Nikpour, Raheb Ghorbani, Shadi Mohebi

Journal of Dentistry Indonesia

Bleaching is a well-known esthetic dental treatment performed to lighten the tooth shade. Among different cosmetic dental procedures, including direct and indirect tooth-colored restorations, bleaching is likely the most conservative approach. Bleaching has been accepted well by patients and proven as a safe and effective approach. Objective: Tooth bleaching can be conducted at home or in offices. This study was performed to compare the enamel microhardness before bleaching and one and eight weeks after the application of different bleaching agents. Methods: Forty human premolars were randomly divided into four groups, and their buccal surface underwent a Vickers microhardness test …

Treatment Of A Class I Malocclusion With Severe Crowding Using Passive Self-Ligating Brackets, Agita Pramustika, Retno Widayati

Journal of Dentistry Indonesia

Presently, dental crowding is the most common problem among orthodontic patients. The prevalence of crowding in the dental arch is significantly increased in modern dentitions, and it is the most common reason why patients pursue orthodontic treatment. Objective: To report an advanced bracket systems, namely self-ligating brackets, to increase the efficacy of orthodontic treatment especially in patients with severe crowding. Case Report: A 22-year-old female patient presented with severe crowding of the maxillary and mandibular arches. In the upper arch, both second premolars were palatally positioned; in the lower arch, the lower right canine was lingually positioned and the lower …

Direct Composite Resin Restoration Of Anterior Maxillary Teeth And Esthetic Smile Design: A Case Report, Christina Widya Nugrohowati, Wignyo Hadriyanto, Tunjung Nugraheni

Journal of Dentistry Indonesia

Dental esthetic complex involves more than one caries with malformed shape and malposition. Dental trauma most commonly affects maxillary anterior teeth, and subsequently affects the esthetics, functions, and psychological well-being of the individual. Composite resins have become an integral part of contemporary restorative and minimally invasive dentistry. Objective: To summarize the successful use of direct composite resin restoration in the management of a 29-year old male patient. Case Report: A 29-year old male patient presenting with multiple secondary caries and crown fractures in the anterior maxillary teeth, resulting in an unaesthetic smile. Comprehensive esthetic dental treatment was carried out. The …