Dentistry Commons^™

Determining The Fidelity Of Multiple Casts Made From A Single Polyvinylsiloxane Impression, Steven Curtis, Steven Sadowsky, Eric Salmon

Oral Health

ABSTRACT

Statement of problem: Indirect restorations may not fit the patient’s teeth, or they may require excessive adjustment. If multiple casts from the same impression are equivalent, dentists can use new pristine casts to determine if fit problems have a laboratory or clinical cause. If the problem is from the laboratory, it may be correctable on a pristine cast.

Purpose: The purpose of this in vitro study is to determine if the areas critical for indirect restoration fit are equivalent on 6 casts made over 29 days from a single polyvinylsiloxane impression.

Material and Methods: Eight impressions were made …

Oral Streptococcus And Vitamin B12 Deficiency In E-Cigarette Users: A Microbial–Nutrient–Neurotransmitter Axis Linking To Mood Disturbances, Maryam Sabah Naser, Ali Jabbar Abd Al-Hussain Alkawaz, Ali Abbas Hashim Almusawi, Ali Jalil Obaid, Hasanain Ayed Mohammed Al-Khafaji, Reihaneh Sabbaghzadeh

Karbala International Journal of Modern Science

Background: With the rising popularity of e-cigarettes, questions have emerged regarding their broader influence on oral ecology, nutrient absorption, and psychological health. Disruptions in the oral microbiome may alter vitamin B12 dynamics. This, in turn, may indirectly influence serotonin biosynthesis and mood regulation.

Methods: An observational cross-sectional study involved 150 young adults segregated into groups of 50 each as vapers, smokers, or non-users. Streptococcus sanguinis and vitamin B12 metabolism-related variable statuses methylmalonic acid and holotranscobalamin were quantified in samples, along with inflammatory markers interleukin-6, kynurenine/tryptophan ratio, and serotonin. Statistical techniques, including ANOVA and the Kruskal-Walli’s test, correlation, and serial mediation …

A Programmable Genetic Platform For Engineering Noninvasive Biosensors, Asish N Chacko, Kaamini M Dhanabalan, Jinyang Wan, Roy Chien, Nolan T Anderson, Binzhi Xu, Katie Pham, Ritu Tiwari, Arnab Mukherjee

Faculty, Staff and Student Publications

Creating genetic sensors for noninvasive visualization of biological activities in optically opaque tissues holds immense potential for basic research and the development of genetic and cell-based therapies. Magnetic resonance imaging (MRI) stands out among deep tissue imaging methods for its ability to generate high-resolution images without ionizing radiation. However, the adoption of MRI as a mainstream biomolecular technology has been hindered by the lack of adaptable methods to link molecular events with genetically encodable contrast. Here, we introduce modular aquaporin-based protease-activatable probes for enhanced reporting (MAPPER), a platform for the systematic creation of genetic sensors for MRI. To develop MAPPER, …

Effect Of Remineralization And Resin Infiltration On Microhardness, Mineral Content And Cervical Microleakage Of Restored Demineralized Enamel, Sara Adel Botros, Caroline Maged Massieh

Dentistry

No abstract provided.

Long-Term Follow-Up Of Midface Hypoplasia In A Patient With Cleft Lip And Palate, Jui-Jen Fang, Hui-Ching Yu, Li-Ling Cheng, Yu-Jen Chang

Taiwanese Journal of Orthodontics

Introduction: Severe midface hypoplasia is a common craniofacial deformity in patients with cleft lip and palate (CLP), often linked to functional impairment and esthetic concerns. Although surgical and orthodontic advances have improved outcomes, long-term stability remains challenging. This report presents the management of a bilateral CLP patient and evaluates stability after more than 12 years of follow-up. Diagnosis: A 31-year-old male with bilateral CLP showed a concave facial profile, widened lip scars, reverse overjet of –30 mm, complete crossbite, and missing teeth (12, 22, 36). Palatally displaced premolars (15, 25) produced an hourglass-shaped arch. The diagnosis was skeletal Class III …

Treatment Of Skeletal Class Iii Malocclusion With Spaced Arch And Anterior Crossbite Using Low-Hysteresis Improved Super-Elastic Ti-Ni Alloy Wire (Isw), Szu-Ying Yu, Yuag-Hou Chen, Ching-Yu Yang, Jian-Hong Yu

Taiwanese Journal of Orthodontics

This article presents the orthodontic treatment of a non-surgical, non-growing skeletal Class III malocclusion using an Improved Super-elastic Ti-Ni Alloy Wire (ISW), developed by the Institute of Science Tokyo (formerly Tokyo Medical and Dental University). Teeth 28 and 48 were extracted, and ISW with long Class III intermaxillary elastics (L3–U6) was applied to eliminate anterior occlusal interference, retract the mandible, and induce a clockwise rotation of the mandibular plane. In addition to mandibular space closure, the deviated dental midline and chin asymmetry were corrected using elastic chains and intermaxillary elastics. Proper arch coordination, space management, and midline alignment were achieved, …

Orthodontic Space Closure And Third Molar Uprighting For Simultaneous Maxillary And Mandibular Molar Loss On The Same Side, Chun-Yi Huang, Yuan-Hou Chen, Ching-Yu Yang, Jian-Hong Yu

Taiwanese Journal of Orthodontics

This case report describes the successful non-surgical orthodontic management of a complex Class I malocclusion characterized by unilateral posterior tooth loss and functionally induced facial asymmetry. A 28-year-old male patient presented with a non-restorable maxillary first molar (#26) and a missing mandibular second molar (#37). The resulting occlusal discrepancy contributed to a mandibular functional shift and facial asymmetry. The patient declined prosthetic and surgical options, prompting a conservative orthodontic approach.

The treatment plan incorporated third molar protraction and upright to substitute for the missing second molar, combined with occlusal rehabilitation to correct the asymmetry. Space closure was achieved using elastic …

Nonsurgical Orthodontic Management Of A Severe Skeletal Class Ii Malocclusion Using A Modified Intrusive Arch, Ting-Wei Liu, Chun-Liang Kuo, Chun-Hsiu Yang

Taiwanese Journal of Orthodontics

Treating skeletal Class II malocclusion in non-growing patients remains a significant challenge in contemporary orthodontics. Treatment options range from dental camouflage, often involving extractions, to combined orthodontic–surgical approaches. In this case, orthodontic camouflage with extractions was selected to manage a severe skeletal Class II discrepancy in a 28-year-old female patient. A modified intrusive arch was employed to achieve simultaneous retraction and intrusion of the maxillary anterior teeth, effectively reducing excessive overjet. The biomechanical system of the modified intrusive arch generates an anterior intrusive force, a posterior extrusive force, and a posterior tip-back moment. The combined use of Tip-Edge Plus brackets …

In Memoriam: Dr. Marvin E. Pizer (1926-2025), Richard F. Roadcap Dds

Virginia Dental Journal

No abstract provided.

The Dental Oenophile, Zaneta Hamlin Dds

Virginia Dental Journal

No abstract provided.

Why Haven’T Annual Maximums In Dental Insurance Plans Kept Up With Inflation?, Chris Pyle

Virginia Dental Journal

This document discusses the challenges of increasing annual maximums in dental insurance plans amidst rising costs, network participation issues, and premium sensitivity. It highlights Delta Dental of Virginia's innovative solutions, including higher maximum plans and gradual coverage increases, while emphasizing the balance between affordability and coverage.

Dental Detective Series - Word Search, Zaneta Hamlin Dds

Virginia Dental Journal

No abstract provided.

Ethics In Dentistry Amid Local And Nationwide Dental Hygienist Shortage, David T. Marshall Dds

Virginia Dental Journal

This article discusses the ethical challenges and operational impacts of the nationwide dental hygienist shortage, with a focus on Virginia, which faces a significant deficit of over 1,000 full-time-equivalent hygienists. The shortage has led to increased workloads, reduced access to care, and pressure to compromise treatment standards. Dental professionals are urged to uphold ethical principles, including informed patient decision-making, transparency about staffing limitations, and adherence to legal scopes of practice. The article emphasizes the importance of collaborative, patient-centered solutions, such as reassessing scheduling models, supporting educational programs, and advocating for policy changes to address workforce shortages and improve access to …

Save The Date - 2026 Virginia Dental Showcase, Megan Wyman

Virginia Dental Journal

No abstract provided.

Vda Career Center Connects Employers With Premier Dental Professionals, Shannon Jacobs

Virginia Dental Journal

Leverage your VDA member benefits by using the VDA Career Center to find new talent for your practice.

Through The Looking Glass, Sarah Glass Dds

Virginia Dental Journal

Cases are presented by Ryan Abi Jomaa and Rahaf AlMatrook, fourth-year dental students at Virginia Commonwealth University School of Dentistry.

The Fulcrum Podcast, Shannon Jacobs

Virginia Dental Journal

In this issue we feature the latest episodes of The Fulcrum Podcast.

Vda Pac Update, Laura Givens

Virginia Dental Journal

No abstract provided.

Vda Advocacy And Your Membership, Frank Iuorno

Virginia Dental Journal

This article outlines the advocacy efforts by the Virginia Dental Association (VDA). It emphasizes the importance of membership to support legislative initiatives, outlines key issues affecting dental providers, and discusses the impact of ERISA exemptions on dental plans. Additionally, it details the ADA's federal advocacy actions to limit ERISA preemption and strengthen state regulatory authority over dental benefits.

How Are Oral Preventive Assistants Impacting Access To Dental Care In Other States?, Paul Logan

Virginia Dental Journal

Oral Preventive Assistants (OPAs), a type of Expanded Function Dental Assistant, are improving access to dental care in states like Kansas, Missouri, and through the Indian Health Service. Studies and pilot programs show increased patient access, enhanced workflow, and high satisfaction among patients and dental teams. OPAs support hygienists and dentists by performing preventive tasks, allowing specialists to focus on complex care, without replacing existing roles. These models address workforce gaps and bottlenecks in dental care delivery.