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Ada News - 09/05/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Ada Code Of Ethics (September 2016), American Dental Association

Code of Ethics

The ADA Code of Ethics has three main components: The Principles of Ethics, the Code of Professional Conduct and the Advisory Opinions. Contents may also include: Amendment to ADA Principles of Ethics and Code of Professional Conduct and Insert for the ADA Principles of Ethics and Code of Professional Conduct. The most current issue is available on the ADA’s website.

Treatment Considerations For Skeletal Class Iii Orthognathic Surgery, Janeta Chavanavesh, Kanok Soratesn

Chulalongkorn University Dental Journal

Class III malocclusion treatment is challenging to orthodontists because of its genetic basis and tendency for relapse following treatment. In adult patients, this malocclusion can be treated by either camouflage or combined orthodontic and surgical treatment. Since there are complexity in several aspects for Class III malocclusion, particularly in the case where the surgery is required, the aim of this review was to gather information concerning the etiologies, treatment strategies, and treatment considerations, especially for the orthognathic surgical treatment of skeletal Class III patients.

Effect Of Various Chemical Post Surface Treatments On The Microtensile Bond Strength Of Fiber Posts, Siriporn Arunpraditkul, Wacharasak Tumrasvin, Sariya Saoraya, Kamolporn Wattanasirmkit

Chulalongkorn University Dental Journal

Background/Objectives To evaluate the microtensile bond strength (μTBS) between epoxy-based or dimethacrylate-based fiber posts and resin cores after various post surface treatments. Materials and methods Eighty DT light (DT) and forty FRC Postec Plus (FRC) posts were divided into 8 groups; group 1: silanization (S), group 2: silanization and application of bonding agent (SB), groups 3, 5, 7: etching with 37% phosphoric acid for 1 minute (P), 30% hydrogen peroxide for 10 minutes (H30), 35% hydrogen peroxide for 1 minute (H35), respectively, followed by S, groups 4, 6, 8: etched as in groups 3, 5, and 7, but followed by …

Localized Juvenile Spongiotic Gingival Hyperplasia: A Case Report, Chanekrid Oupadissakoon, Narissaporn Chaiprakit, Weerachai Singhatanadgit

Chulalongkorn University Dental Journal

Localized juvenile spongiotic gingival hyperplasia (LJSGH) is a recently discovered oral lesion in children and young adults, which can be misdiagnosed with gingivitis associated with dental plaque and other well recognized reactive lesions. Clinically, JSGH presents as bright red gingival overgrowth with papillary surface, most commonly at attached and marginal gingivae of the upper anterior region. Differential diagnoses may include pyogenic granuloma, peripheral giant cell granuloma, peripheral ossifying fibroma and hyperplastic gingival inflammation. Histologically distinctive, JSGH is characterized by non-keratinizing stratified squamous epithelium with papillary architecture, intense neutrophilic exocytosis and spongiosis. The objectives of the present case report were to …

A Swing Arm Design Dental Surveyor, Vichet Chindavanig

Chulalongkorn University Dental Journal

The objective was to design and fabricate a dental surveyor using fewer complicated custom made industrial metal parts, thus minimizing production cost. The product design allows working with dental casts of varied dimensions. Current products were analyzed using machine design synthesis. The components of the new surveyor design are predominantly prefabricated objects. The formulation method is comparable with an inverse kinematic engineering approach. A swing arm dental surveyor design was found to be efficient for general dental use at a lower production cost. This article describes the design and assembling method of a dental surveyor made from local common products …

The Implementation Of Alternative Pain Control Methods By Dental Hygienists, Alejandra Valadez Rodriguez

Mahurin Honors College Capstone Experience/Thesis Projects

As a dental hygienist, it is important to understand new concepts and techniques that can contribute to a more comfortable setting for patients who experience dental anxiety. Alternative pain control methods can assist in alleviating patient anxiety, therefore, providing a more efficient and relaxed clinical atmosphere for both patient and clinician. Some of the methods discussed are: guided imagery, deep breathing, muscle relaxation, hypnosis, acupressure, essential oil diffusion, audio distraction, and visual stimuli. After reviewing the literature the researcher found that dental anxiety affects patient compliance, their overall health, and willingness to attend regular dental visits. The purpose of this …

Analyzing The Regionalized Awareness Of Distraction Osteogenesis, Ali Weinzapfel

Mahurin Honors College Capstone Experience/Thesis Projects

There are multiple treatment options available to initiate bone growth within the oral cavity. Distraction osteogenesis is a surgical dental procedure performed to initiate new bone growth in the maxillofacial region. This procedure is an important advancement to dental professionals because of the minimal complications and great outcome of bone growth it offers. As dentistry is always evolving, it is imperative to relay current trends to other professionals within the field of dentistry. The goal of this research was to analyze the regionalized awareness of distraction osteogenesis. A survey was conducted among dentists in Kentucky and Tennessee with multiple questions …

Comparison Of Two Methods Of Transpalatal Arch And Lingual Arch Activation, Taoran Zhang

Loma Linda University Electronic Theses, Dissertations & Projects

The TPA and LA can be activated with two methods: the “shape-driven method” where the appliance is made to match the final tooth position and the “force-driven method” where the appliance is made to make sure the force system delivered by it at the beginning is consistent with the planned tooth movement. This study compared the two methods in vitro quantitatively with typodont teeth and multi-axis force torque transducers in all three dimensions. Results: In the TPA first order activation, with comparable Fy (force on Y axis) reading, the shape-driven activation group had a significantly higher Mx (moment on X …

A Cbct Study Of Pharyngeal Airway Changes Due To Fixed Functional Appliances, Scott T. Peterson

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: The purpose of this retrospective study, using head and neck Cone-Beam Computed Tomography (CBCT) images, was to measure and compare volumetric, area, and linear changes of the pharyngeal airway space in patients treated with a MARA or Herbst Class II correction appliances. Materials and Methods: Twenty-six patients treated with a MARA (mean age 13.2), nine with a Herbst (mean age 12.12) , and a control group twenty-five orthodontically treated class I patients (mean age 13.11). T1 and T2 CBCT images were measured and compared between the three groups for area, length, and width measurements along the velo-, oro-, and …

An Evaluation Of Root Length Change Measurements Using Intraoral Scan And Panoramic Radiographs, Elijah C. Wang

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: This study was intended to evaluate the accuracy of using panoramic radiographs to measure root length change over the course of orthodontic treatment, using intraoral scans of crowns, and a mathematical model to account for distortions in the radiographs. The study additionally evaluated whether a best-fit equation could be created from the calculated data to minimize differences to the measurements of root resorption made on CBCT scans. Materials and Methods: Twenty-one patients were selected who had comprehensive orthodontic treatment, and all teeth in the upper right quadrant were evaluated in this study. T1 and T2 CBCT images were compared …

Correlation Of Tooth Length Measurements Made On Cbct And 3t Mr Images, Andrew Scott Taylor

Loma Linda University Electronic Theses, Dissertations & Projects

Objective. This study compared tooth length measurements made on cone beam computed tomography (CBCT) scans and 3-Tesla (3T) magnetic resonance (MR) scans performed with and without an alginate bite registration surrounding the crowns of the teeth. Materials and Methods. One CBCT scan, one MR scan with alginate bite registration, and one MR scan without bite registration were performed on 12 subjects. The alginate bite registration was used to provide a proton-rich material to surround proton-poor teeth in an attempt to improve visualization of teeth. DICOM formatted images from each of the three scans for each subject were oriented in all …

The Effect Of Orthodontic Treatment On Sagittal Root Position Of The Maxillary Central Incisor, Jeremy Haines

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Sagittal root position (SRP) of maxillary incisors is an important factor in implant treatment planning. Kan et al defined four classes of SRP in an effort to aid implant placement treatment planning and these SRP classifications represent a novel approach to describing bone changes around the maxillary incisors. The effect of orthodontic tooth movement, specifically changes in inclination, on SRP is of interest in potentially facilitating immediate implant placement. Purpose: The purpose of this study was to use Cone Beam Computed Tomography (CBCT) to evaluate the adaptation of alveolar bone around the maxillary incisors as a result of orthodontic …

Ricketts Analysis Using Conventional And Dolphintm Generated Cbct Lateral Cephs, Yeganeh Parhizkar Jewell

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: The aim of this study was to evaluate the difference between Ricketts analysis measurements made on Sirona Orthophos XG Plus (Sirona Dental Systems, Charlotte,NC) lateral cephalograms, and DolphinTM generated perspective and orthogonal lateral cephalograms from CBCT (NewTom 5G; QR srl, Verona, Italy). Materials and Methods: A Sirona digital lateral cephalogram and DophinTM synthesized CBCT lateral cephalograms of a radiographic phantom in orthogonal and perspective projections were created. Horizontal and vertical measurements were made in multiple planes on the radiographic phantom to compare each imaging modality. Twenty-five lateral cephalometric radiographs were selected retrospectively from the records of patients of …

Edge Chipping Resistance And Flexural Strength Of Polymer Infiltrated Ceramic Network And Resin Nanoceramic Restorative Materials, Renos Argyrou, Geoffrey A. Thompson, Seok-Hwan Cho, David W. Berzins

School of Dentistry Faculty Research and Publications

Statement of problem

Two novel restorative materials, a polymer infiltrated ceramic network (PICN) and a resin nanoceramic (RNC), for computer-assisted design and computer-assisted manufacturing (CAD-CAM) applications have recently become commercially available. Little independent evidence regarding their mechanical properties exists to facilitate material selection.

Purpose

The purpose of this in vitro study was to measure the edge chipping resistance and flexural strength of the PICN and RNC materials and compare them with 2 commonly used feldspathic ceramic (FC) and leucite reinforced glass-ceramic (LRGC) CAD-CAM materials that share the same clinical indications.

Material and methods

PICN, RNC, FC, and LRGC material specimens …

Ada News - 08/22/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Local Minocycline To Reduce Future Inflammation And Bone Loss In Periodontal Maintenance Patients, Jeffery S. Jensen

Theses & Dissertations

The objectives of this study were to compare the effect of SRP+MM versus SRP alone on inflammatory cytokines, interleukin (IL)-1β and IL-1 receptor antagonist (ra), found in gingival crevicular fluid (GCF) and saliva, and correlate IL-1 values with clinical outcomes over a 2-year period of PMT. Fifty-five patients with an initial posterior pocket ≥5 mm and history of bleeding on probing (BOP) were randomized to test (SRP+MM, n=27) and control (SRP, n=28) groups. Clinical measurements and GCF samples were done at baseline and 24 months. SRP+MM or SRP were provided at 6-month intervals. IL-1β and IL-1ra were measured in GCF …

Flexural Strength Of Nano-Hybrid Resin Composite As A Function Of Light Attenuation Distance And Specimen Dimension, Farid Sabry El-Askary Pro. Dr., Sara Adel Botros Dr., Mohamed Salah Abdelaziz Nassif Pro. Dr., Mutlu Özcan Prof. Dr.

Dentistry

This study evaluated ascending order of light attenuation distance (0, 2, 4, 8 mm) and specimen dimensions (2 × 2 × 10, 2 × 2 × 12, 2 × 2 × 15 mm3) differing from requirements of ISO 4049 (2 × 2 × 25 mm3) on the flexural strength of nano-hybrid resin composite. Specimens (N = 160) were prepared accordingly and randomly assigned into groups for the factors studied. Specimens were photo-polymerized from increased distances through 1, 2, 3 and 5 overlapping cycles depending on the specimen length after which they were subjected to three-point bending test (0.5 mm/min). …

Get In The Zone: A Survey Of Dental Professionals' Knowledge Of Ozone Therapy, Emily Hannah

Mahurin Honors College Capstone Experience/Thesis Projects

Ozone therapy has been used in medicine for many years to treat a variety of ailments. Ozone is an unstable triatomic molecule made up of three oxygen atoms. This molecule has the ability to kill bacteria, fungi, parasites, and viruses. The researcher first was curious if there has been research done on uses of Ozone Therapy in the dental setting. After reviewing the literature there is indeed a use for Ozone Therapy to treat a host of dental problems including periodontal disease, ulcers, and carious lesions (also known as cavities). However, there are conflicting conclusions in the literature as to …

Ada News - 08/08/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.