Dentistry Commons^™

The Efficacy Of Copper Iodide Nanoparticle-Augmented Mta Against Enterococcus Faecalis: A Confocal Microscopy Study, Craig Alan Atchison

MUSC Theses and Dissertations

Introduction: The introduction of metallic nanoparticles such as copper into medical materials has shown promising results in terms of antimicrobial activity. A novel material incorporating nanoparticles could be useful in combating bacterial biofilms and improving long-term success rates in endodontic therapies. The aim of this study was to evaluate the antibacterial effect of mineral trioxide aggregate disks augmented with copper iodide nanoparticles on a biofilm of E. faecalis and compare the results with non-augmented control MTA in the same conditions using confocal laser scanning microscopy. Methods: Fabricated disks were made up of control, non-augmented MTA or copper iodide nanoparticle-augmented MTA …

Aadej Comm 49 1 2018

AADEJ - The Communicator

The Communicator is the official journal of the American Association of Dental Editors and Journalists (AADEJ). It is published quarterly, distributed digitally via email to members, and posted on the Association’s website, AADEJ.org. Each issue includes regular updates from the editorial team and AADEJ board, as well as feature articles on current issues in the field.

Accuracy Comparison Of Static Cais Vs Dynamic Cais In Single Space Loss At Upper Anterior Region In Four Types Of Bone Density, Phloi Chaisuwannarak

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose: To compare the precision of implant placement in the single space missing of anterior tooth in different circumstances of bone type using static CAIS system (Co-diagnostic system Straumann ®) and dynamic CAIS system (E-PED, I-RIS100). The author hypothesized that the overall accuracy of implant placement using static and dynamic CAIS system among four types of bone are not different. Methodology: 64 upper models with artificial bone density D1-D4, divided in to 2 main groups of static CAIS group and dynamic CAIS, which each subgroups contain 8 models for individual bone group, were prepared with single space edentulism on tooth …

Color Stability, Water Sorption And Water Solubility Of Various Artificial Acrylic Resin Teeth, Piyaporn Foungfu

Chulalongkorn University Theses and Dissertations (Chula ETD)

Color stability, water sorption and water solubility of the acrylic resin artificial teeth are the success keys to the appearance and mechanical properties of the denture teeth. The objective of the present study was to compare the color stability, water sorption and water solubility of 3 commercial artificial teeth: linear PMMA (NEW), resin composite (CPX) and cross-linked PMMA (ANT) and 1 color-liked heat-polymerized acrylic resin (MAJ). 80 colume-shaped specimens (9 mm/ 2 mm thickness) were fabricated for color stability test using a spectrophotometer after immersing in water or coffee solution at 1, 7, 28, 56 and 84 days. 40 colume-shape …

Mechanical Behavior Of Posterior All‐Ceramic Hybrid‐Abutment‐ Crowns Versus Hybrid‐Abutments With Separate Crowns—A Laboratory Study, Ahmed Sabet

Dentistry

Objective: The purpose of this laboratory study was to evaluate the fatigue resist‐ ance, fracture resistance and mode of failure of posterior hybrid‐abutment‐crown vs. hybrid‐abutment with separate crown, both bonded to short titanium bases. Materials and Methods: Thirty‐two titanium implants were embedded perpendicu‐ larly in auto‐polymerizing resin. Implant‐supported restorations simulating a maxil‐ lary first premolar were designed and milled using a CAD/CAM system and divided into 2 groups according to material (n = 16): zirconia (Z) and lithium disilicate (L). Each group was subdivided into two subgroups according to design (n = 8): hybrid‐abut‐ ment‐crown (ZS, LS) and hybrid‐abutment with …

A Systematic Review On The Validity Of Teledentistry, Jafar H. Alabdullah, Susan J. Daniel

Dental Hygiene Faculty Publications

Objectives: The aim of this systematic review was to evaluate the validity of using teledentistry in oral care examination and diagnosis.

Methods: In June 2016, a systematic search of the literature was conducted without time restrictions in three electronic databases (Ebscohost, Pubmed, and Scopus). Two reviewers screened the retrieved articles first by title and then by abstract to determine relevant articles for full text review. Studies included were as follows: (1) related to teledentistry, (2) available in full text and English, (3) compared teledentistry application to a gold standard, and (4) provided clear statistical tests for validity. The methodological …

Survival Rates Of Stainless Steel Crowns And Multi-Surface Composite Restorations Placed By Dental Students In A Pediatric Clinic, Badia A. Zahdan, Aniko Szabo, Cesar D. Gonzalez, Elaye Okunseri, Christopher Okunseri

School of Dentistry Faculty Research and Publications

Purpose: This study examined survival rates of multi-surface composite restorations and stainless steel crowns (SSCs) placed by students in a pediatric dental clinic as well as the length of time it takes for restorations to be replaced with stainless steel crowns. Study design: Data from electronic dental records for all children with at least one 2-surface composite restorations or SSCs on a primary first or second molar from January 1, 2007 to September 30, 2015 were analyzed. The primary outcome was the time to a new restoration or SSC on the same tooth, with time to a crown as a …

Two-Phase Orthodontic Treatment In Class Ii Division 1 Malocclusion, Wen-Hui Hsieh, Hui-I Chen, Chin-Hsiang Chan

Taiwanese Journal of Orthodontics

A two-phase treatment comprising functional orthopedic therapy and fixed orthodontic therapy is often proposed for pubescent patients with Class II division 1 malocclusion. Mandibular retrognathism is a more common underlying cause of Class II skeletal discrepancy than the maxillary prognathism. In such cases, an activator is a widely used functional orthopedic appliances to enhance the mandibular growth. After resolving the sagittal problem by using the functional appliances, the biomechanical considerations of the anchorage requirement could be simplified in the second phase fixed appliance therapy, and the total treatment duration could be shorter. This case report describes a two-phase orthodontic treatment …

Assessment Of Midpalatal Suture Maturation For Orthodontic Diagnosis And Treatment Planning, Chiao-Yi Kao, Chin-Yun Pan, Hong-Po Chang, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

Accurately estimating the maturation of a midpalatal suture can improve the success rate of a maxillary expansion procedures. The craniofacial sutural maturation is an essential consideration in the choice between non-surgical and surgical methods of maxillary expansion. The maturation of a midpalatal suture can be assessed in several ways. This article reviews the literatures on the assessment of midpalatal suture maturation and its importance for orthodontic diagnosis and treatment planning.

Surgical Occlusion Setup In Orthognathic Surgery Using Surgery-First Approach For Skeletal Class Iii Deformity: A Systematic Review, Shu Hsien Lo, Yu-Fang Liao

Taiwanese Journal of Orthodontics

Objective: Surgery-first orthognathic surgery is increasing in popularity because of reduced treatment time, efficient tooth decompensation, and early improvement in facial esthetics. However, it remains difficult due to the surgical occlusion setup. We systematically reviewed the literature in order to determine the guidelines used for surgical occlusion setup in orthognathic-first surgery for skeletal Class III deformity. Material and Methods: The literature was searched using PubMed, Medline (Ovid), Cochrane Library, Web of Science and Google Scholar databases from January 1931 to June 2017. We limited the search to publications in English. Two independent investigators used specific inclusion and exclusion criteria to …

Consideration Of Facial Growth And Oral Function With The Use Of High Pull Headgear, Shao-Chun Yang, Ming-Jeaun Su, Yuen-Yung Tsang, Huei-Mei Tsai

Taiwanese Journal of Orthodontics

High pull headgear with face bow has been a popular treatment modality for upper first molars distalization and anchorage enhancement. It can effectively inhibit the eruption of upper molars, enhance condylar growth to contribute a forward movement of the mandible and further improve the bite and lip incompetence. The compliance from patients is particularly important for favorable treatment outcome. The patient was an 11-year-old boy with features of Class II division 1 malocclusion. Patient’s growth spurt seemed to be continued in the recent year. Lip biting and thumb sucking habits were suspected as the causes of patient’s malocclusion. A combination …

Clinical Use Of Contemporary Clear Aligner Therapy, Chun-Te Ho, Chien-Wei Chao, Chia-Tze Kao

Taiwanese Journal of Orthodontics

Clear aligner therapy (CAT) is an increasing popular alternative to conventional bracket therapy. This review summarized contemporary data regarding the history of CAT. The information regarding the advantages and disadvantages of CAT, biomechanical force and biological considerations, controlling orthodontic tooth movement (OTM) would be discussed in this review. The CAT is well accepted for their esthetics, comfort, good care of oral hygiene and periodontal status and suitable for interdisciplinary dental treatment. However, CAT was also considered as difficult compliance for the patients, uneasy to be handled by clinicians, unprecise root movement, difficult for the postoperative fixation in cases receiving orthognathic …

An Overview Of Digital Intraoral Scanners: Past, Present And Future- From An Orthodontic Perspective, Henry Hann-Min Hwang, Chi-Wei Chou, Yi-Jane Chen, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

Digital intraoral scanners(IOSs) have become the ongoing trend in contemporary digital orthodontics. This article aims to elaborate the past, present, and future of IOSs from an orthodontist’s perspective. We summarized the comparison between digital and conventional impression in literatures. Also, we discussed about the imaging principles and characteristics of different IOSs. Although unable to recommend the single best option, a checklist of consideration when choosing an IOSs was developed after trailing the mainstream commercial products. With technology revolution, embracing the IOSs may be essential for those interested in future digital orthodontic workflow.

Orthodontic Treatment Management For Congenitally Missing Maxillary Lateral Incisors, Yu-Ting Sun, Tao-Wei Chang, Po-Yu Yang, Tzu-Hsin Lee

Taiwanese Journal of Orthodontics

Congenitally missing of maxillary lateral incisor is one of the most common agenesis anomalies. The purpose of this review was to present the orthodontic treatment of choice for a malocclusion with missing maxillary lateral incisors. Treatment plans consist of three categories: canine substitution, single-tooth implant and tooth supported restorations. Among which the least invasive option to achieve satisfying function and aesthetics is canine substitution. Factors such as the profile of the patient, the space analysis of dentition, and the color and shape of canine should be taken into consideration for treatment choice.

Surgical-Orthodontic Correction In Skeletal Class Iii Anterior Open Bite With An Ankylosed Maxillary Molar, Chin Suppapinyaroj, Ellen Wen-Ching Ko, Yu-Ray Chen

Taiwanese Journal of Orthodontics

This case report describes the treatment of a 24-year-old woman with chief complaints of anterior open bite and long lower jaw. She had a skeletal Class III with concave facial profile, hyperdivergent facial pattern, long lower facial height, and excessive anterior open bite. Intraoral examination revealed 26 tooth ankyloses and 32, 42 congenital missing teeth. The 26 was highly-locked, showing root penetrating into the sinus floor. Treatment was performed with a modified surgery-first approach, which included 5 months of presurgical alignment phase to upright the 27 mesially-tilted tooth and to correct upper dental midline by 14 extraction. The surgeries included …

Rapid Maxillary Alveolar Expansion In Maxillary Severe Space Deficiency, Mei-Yin Chen, Wen-Ken Tai, Heng-Ming Mark Chang, Hoi-Shing Luk, Chia-Tze Kao

Taiwanese Journal of Orthodontics

Although maxillary skeletal palatal expansion was efficient to correct the transverse dental deficiency, the conventional maxillary palatal expansion is still effective in some cases. This case report describes the orthodontic treatment procedure of a 15-year-old female patient who was diagnosed as Angle’s Class I malocclusion with severe space deficiency. The space deficiency of 11 mm was noted in maxillary arch in conjunction with severe overjet, blocked-in lateral incisors, high maxillary vault, posterior crossbite and V shape arch-form. The treatment plan presented non-extraction with rapid maxillary alveolar expansion in upper arch. The Hyrax expander was used in a rhythm of 2 …

Orthodontic Treatment Combined With Maxillary Posterior Subapical Osteotomy In Severe Anterior Open Bite, Jui-Hsien Yang, Yun-Yun Wu

Taiwanese Journal of Orthodontics

A 29-year-old woman presented with severe anterior open bite (−6 mm). Eight-month presurgical orthodontic treatment involving arch rounding and leveling was performed, with the upper arch treatment from canine to canine only. Bilateral maxillary posterior subapical osteotomy (PSO) for posterior intrusion was performed for 6-week fixation. Postsurgical orthodontic treatment followed, resulting in a total treatment time of 19 months. Cephalometric X-ray superimposition revealed that the anterior overbite was corrected by 9 mm (from -6mm to +3 mm), and the lower mandibular plane angle changed from 38.4° to 35.4°. Therefore, counterclockwise rotation of the mandible improved the facial profile. In conclusion, …

Virginia Dental Journal (Vol. 95, No. 4, 2018)

Virginia Dental Journal

No abstract provided.

The Lasting Impact Of Intraprofessional Education Between Dentists And Dental Hygienists, Kimber Satter

EWU Masters Thesis Collection

Purpose: The Regional Initiatives in Dental Education (RIDE) program at the University of Washington (UW) allows first year dental students to take courses with Eastern Washington University dental hygiene (DH) students. This study was conducted to see if the RIDE program is effective as an Intraprofessional Education (IntraPE) program in improving dentists’ attitudes towards teamwork and understanding the roles and responsibilities of the DH.

Methods: UW School of Dentistry alumni from 2012-2017 were invited to participate in this study. Attitudes towards teamwork and roles and responsibilities were assessed using two online surveys: a demographic survey containing open-ended questions, and a …

Oral Care And The Connection To Adverse Events In Dentistry, Melissa A. Rhoney

Walden Dissertations and Doctoral Studies

As the healthcare industry continues to change, dental providers are concerned about the different types of adverse events that can occur if systemic diseases are not well understood when treating patients. The purpose of this study was to explore the level of understanding among dental care providers of the relationship between oral care and systemic diseases and how these are linked to adverse events. The theoretical foundation that was used for this study was the Swiss cheese model. The research questions were designed to address the level of understanding among dental care providers of the link between oral care and …

Accuracy Of A Smartphone-Based Orthodontic Treatment Monitoring Application, Heather Moylan

Theses and Dissertations

Objectives: Dental Monitoring® (“DM,” Dental Monitoring, Paris, France), is a cloud-based software that allows orthodontists to track patients’ treatment remotely. The purpose of this study was to investigate the accuracy of the software in making linear measurements.

Methods: Patients took intraoral photographs using the DM application, immediately followed by impressions for plaster models. Intercanine and intermolar width and arch depth measurements were made by DM and compared to measurements made on the plaster models. Data was analyzed using two one-sided t-tests for equivalence with equivalence bounds of

+/-0.5mm. Significance level was set at 0.05.

Results: Thirty sets of measurements were …

Evaluation Of Micro Leakage Of Root Canals Filled With Different Obturation Techniques: An In Vitro Study, Maham Muneeb Lone, Farhan Raza Khan

Section of Dental-Oral Maxillofacial Surgery

Background: Despite a plethora of studies done comparing different obturation techniques using gutta-percha, there is no consensus as to which obturation technique results in a 'better' sealing of root canal space. Aims of the study are to compare mean apical micro leakage in root canals of extracted teeth obturated with cold laterally compacted gutta-percha and thermoplasticised injectable gutta-percha using calcium hydroxide based sealer.
Methods: It was an in-vitro experimental study carried out using extracted teeth. After access cavity preparation and canal preparation in 70 teeth, they were randomly divided into 2 groups and filled with two different obturation …

Factors Affecting Treatment Duration - A Dilemma In Orthodontics, Saman Faruqui, Mubassar Fida, Attiya Shaikh

Section of Dental-Oral Maxillofacial Surgery

Background: One of the first concerns of new orthodontic patients, apart from the outcome, is the duration of treatment. A better understanding of orthodontic treatment duration as well as factors affecting the treatment duration is useful for efficient patient counselling and improved clinical practice. Hence, the objectives of this study are to compare the treatment durations of subjects with Class I and Class II division 1 (II/1) malocclusions, and to identify the factors affecting the treatment duration of these malocclusions.

Methods: This was a chart review conducted in the orthodontic department of the Aga Khan University Hospital, Karachi. …

Evaluation Of Micro Leakage Of Root Canals Filled With Different Obturation Techniques: An In Vitro Study, Maham Muneeb Lone, Farhan Raza Khan

Section of Dental-Oral Maxillofacial Surgery

Background: Despite a plethora of studies done comparing different obturation techniques using gutta-percha, there is no consensus as to which obturation technique results in a 'better' sealing of root canal space. Aims of the study are to compare mean apical micro leakage in root canals of extracted teeth obturated with cold laterally compacted gutta-percha and thermoplasticised injectable gutta-percha using calcium hydroxide based sealer.
Methods: It was an in-vitro experimental study carried out using extracted teeth. After access cavity preparation and canal preparation in 70 teeth, they were randomly divided into 2 groups and filled with two different obturation …

Dentin Microshear Bond Strength Of Various Luting Agents To Zirconia-Reinforced Lithium Silicate Ceramics, Natthapong Itthipongsatorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Statement of problem. Performance of adhesive and resin luting cements used to bond zirconia-reinforced lithium silicate ceramics (ZLS) to dentin has not been well established. Purpose. To examine microshear bond strength (µSBS) of etch-and-rinse adhesive system, universal adhesive and self-adhesive resin cement that were used to bond ZLS to dentin. Material and Methods. Vita Suprinity® (VS, Vita Zahnfabrik) and Celtra® Duo (CD, Dentsply Sirona) blocks were sectioned into 36 and 72 microbars (1×1×3 mm3) respectively. All VS were crystallized, while half of CD were additionally fired and defined as fired-Celtra® Duo (FCD). The others were defined as unfired-Celtra® Duo (UCD). …

The Peri-Implant Soft Tissue Reactions And Cytokine Expressions Around Different Abutment Materials : Randomized Controlled Clinical Trial, Prapaphan Jaikla

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objectives : Stable peri-implant soft tissue around transmucosal zone are the crucial factor for long-term success and survival of dental implants. The aim of this study was to evaluate the expression of proinflammatory cytokines and chemokine around 3 types of abutment materials : titanium (Ti), zirconium oxide (Zr) and gold alloy (Au). Methodology : 15 dental implants were enrolled in this study. Clinical parameters and peri-implant crevicular fluid (PICF) were collected at weeks 4, 6, 8 and 10. The soft tissue characteristics were demonstrated using plaque assessment score and mucosal condition score. Cytokine levels were determined by enzyme-linked immunosorbent assay …

Effect Of Different Polishing Systems, Forces, And Durations On Surface Roughness And Phase Transformation Of Monolithic Zirconia, Songsak Munkongsujarit

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to determine the effect of polishing systems, forces and durations on the surface roughness and phase transformation of zirconia. 72 pieces of fully sintered zirconia size 7 x 5 x 4 mm were fabricated with CAD/CAM, then divided into nine groups depending on the polishing systems and forces. All specimens were ground with fine diamond bur as the control, and initial surface roughness (Ra) was measured. The samples were then polished with one of the zirconia polishing systems (Diazircon or Komet ZR) or porcelain polishing system (Ceramaster), with forces at 1, 2 and 3 newtons. The polishing …

Gene Expression Of Bcl2a1 และ Cxcl9 In Soft Tissue Covering Bone Grafting Materials, Borwonluk Taveedach

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study was to assess the expression of Bcl2a1 and Cxcl9 genes in soft tissues covering bone grafted with demineralized freeze-dried bone allograft (DFDBA) and deproteinized bovine bone mineral (DBBM) in comparison with ones covering without grafting. The animals were randomly separated into three groups of treatment. Calvarial defect models were created on parietal bones. Bare defect models without bone graft as a control group. After one and three months, animals were sacrificed. Soft tissues covering the defected area were collected by punch technique. RNA was isolated and proceeded to Real-time reverse transcription quantitative polymerase chain reaction (RT-qPCR). Statistical analysis …

Fracture Resistance Of Non-Ferruled Endodontically Treated Teeth Restored With Different Fiber Post And Core Methods After Five Years Fatigue Loading, Puriwat Malakorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

The aim of this study was to compare the fracture resistance and failure mode of non-ferruled ETT restored with different fiber post and core methods after five years in vitro fatigue loading. Forty-eight uniradicular lower first premolar teeth were decoronated, endodontically treated and prepared for the post space. The prepared specimens were divided into four groups (n=12): single fiber-reinforced composite (FRC) post and flowable resin composite core (Group I), FRC post with an accessory fiber post and flowable resin composite core (Group II), resin composite relined FRC post and resin composite core (Direct anatomic post)(Group III), and resin composite relined …

Fracture Resistance Of Occlusal Ceramic And Composite Molar Onlay Comparing To Lithium Disilicate Molar Crown, Jatuporn Luekiatpaisarn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose: This in vitro study evaluated fracture strengths and failure modes of thin occlusal onlays fabricated from direct resin composite, CAD/CAM polymer-infiltrated ceramic-network, and CAD/CAM lithium-disilicate glass ceramic under compressive loading. Materials and Methods: Forty extracted maxillary molars were prepared, including occlusal enamel and dentin removal, leaving two dentin slopes with peripheral enamel. Thirty teeth were restored with 0.6-mm-thick occlusal onlays using direct resin composite (Premise), CAD/CAM polymer-infiltrated ceramic-network (Vita Enamic), and CAD/CAM lithium-disilicate glass ceramic (IPS e.max CAD). Others were restored with IPS e.max CAD crowns. All restored teeth were loaded vertically by means of a universal testing machine. …