Dentistry Commons^™

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 …

Variants Of Facial Shape Genes In Patients With Class Ii Or Class I Malocclusion, Mahsa Mortazavi, Marie M. Tolarová Md, Phd, Drsc, Mirek Tolar

Orthodontics and Endodontics Theses

Background and purpose: In recent years, questions regarding the genetic and environmental factors affecting variation in human craniofacial morphology have received increasing attention. Medical and clinical genetic research using family studies has proven foundational for our understanding of which genes affect craniofacial variation. On the other hand, cephalometricbased studies showed a relationship between the cranial base and midface characteristics among individuals with different skeletal pattern of malocclusion. The purpose of our pilot study was to analyze specific variants of facial genes that were suggested to be associated with cranial base width and depth in Class II and Class I malocclusions. …

Variants Of Pax Gene Family In Patients With Class Ii Or Class I Malocclusion, Mana Naeim, Marie M. Tolarová Md, Phd, Drsc, Mirek Tolar

Orthodontics and Endodontics Theses

Background and Purpose. Orthodontic treatment helps to ensure proper function of teeth and to create healthy smiles. To this aim, the orthodontist’s goal is establishment of an esthetic harmony between soft and hard tissues of the face. Dimensions of facial width and height are crucial for accurate diagnosis and formulation of an efficient treatment plan. A knowledge of genetic determinants of these dimensions in Class II patients will deepen our understanding of etiology of skeletal Class II malocclusions and would make it possible to personalize a patient’s treatment plan. The purpose of our pilot study was to analyze, if specific …

Removable Appliance Therapy For Interceptive Orthodontic Treatment, Vikas Gupta, James Chen

Orthodontics and Endodontics Theses

Introduction: Socioeconomically disadvantaged children have limited access to orthodontic services not only because of their families’ competing needs for limited resources, but also because of the limited availability of orthodontists in their communities and a shortage of orthodontists who are willing to treat patients enrolled in Medicaid. We will systematically explore the hypothesis that an early interceptive treatment protocol using removable appliances provides the same treatment outcome but better cost-effectiveness than a traditional fixed-appliance protocol. Methods: Interim data on a prospective study with patients being treated either in private practice with rational fixed Phase I orthodontic treatment (n=11) or in …

Complications Reported In Maxillary Skeletal Expansion, Jacqueline Payne, Audrey Yoon, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: The aim of this study was to determine the types and prevalence of complications following MARPE protocol at University of the Pacific and to investigate the complication of asymmetry using CBCT analysis. Methods: In the first portion of this study, 97 patients who started treatment prior to July 2020 and who had MARPE expander treatment at the University of the Pacific were included. Chart review and evaluation of progress clinical photographs were used to report the following complications: inflammation, pain, appliance malfunction, broken microscrew, and pulpitis. In the second portion of this study, 77 patients from a private practice …

1 Long Term Impact Of Microimplant Assisted Rapid Palatal Expansion On Soft Tissue Nasal Morphology, Laura Chew, Heeyeon Suh, Joorok Park, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: When skeletal transverse discrepancies exist between the maxilla and mandible, they commonly manifest in dental malocclusion. If left uncorrected, the malocclusion can lead to periodontal issues, tooth fractures, tooth loss, or other significant dental problems. Utilization of microimplants in palatal expansion aims to correct transverse discrepancies between the maxilla and mandible by separating the palatal suture in a parallel manner aimed at maximizing skeletal changes and minimizing dental side effects. Overlying soft tissue changes can be affected by the induced skeletal changes. The purpose of this study is to evaluate skeletal expansion and the overlying soft tissue change that …

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 …

Utilization Of A New Web-Based Application For Case Difficulty Assessment As A Predictor For Procedural Errors In Nonsurgical Root Canal Treatment, Watraat Unmona Hasanat

Orthodontics and Endodontics Theses

Introduction: There are currently no established guidelines to determine which cases general practitioners should refer to an endodontist for root canal treatment. The American Association of Endodontists (AAE) has developed the EndoCase mobile application (ECA), which utilizes either a full or abridged rubric to assign case difficulty level and provide referral guidelines to general practitioners and dental students. Objective: The objective of this study was to determine whether the abridged criteria of the EndoCase application can help predict the incidence of procedural errors in nonsurgical root canal treatment of mandibular molars in an undergraduate dental clinic based on the difficulty …

An In Vitro Evaluation Of The Wirele-X Electronic Apex Locator, Lucas M. Brand Dds, Craig A. Dunlap Dds, Ray Scott Dds Msd, Ove A. Peters Dmd Ms Phd

Orthodontics and Endodontics Theses

Aim: The aim of this study was to evaluate the accuracy of the Wirele-X (Forum Tec, Ashkelon, Israel), a new Bluetooth-enabled electronic apex locator (EAL). The accuracy of the Wirele-X and the Root ZX II (J. Morita, Tokyo, Japan) was compared in vitro using an alginate model. Materials/Methods: Thirty-one extracted single-rooted human teeth with mature apices were decoronated at the CEJ. Under 10X magnification, actual canal lengths (ACL) were determined. The teeth were embedded in alginate and electronic canal length measurements were obtained using the Root ZX II and Wirele-X EALs. Each tooth was measured three times with both EALs. …

Comparison Of Maxillary Expansion Between Clear Aligners And Removable Expansion Appliance In The Mixed Dentition, Micaela Zaverdinos, Paul Kasrovi, James Chen, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: Orthodontic and orthopedic expansion is necessary to create space to resolve crowding due to arch deficiency or tooth size discrepancy. The Invisalign First clear aligner appliance as a modality for early interceptive orthodontic treatment has become incorporated into orthodontic practices in very recent years. The present study aims to investigate the magnitude of expansion of the Invisalign First clear aligner appliance compared to a Schwartz removable expander in patients with mixed dentition. Additionally, the study aims to compare the efficacy and predictability of Invisalign First clear aligners in this population. Materials & Methods: In this retrospective study, a sample …