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Evaluation Of Upper 1st Molar Rotation During Maxillary Canine Retraction In 1st Premolar Extraction Cases At 6 Weeks Reactivation Interval. A Clinical Trial., Rodayna A. Elbadawy, Kareem Elazab, Amr R. El-Beialy, Hend Salah May 2024

Evaluation Of Upper 1st Molar Rotation During Maxillary Canine Retraction In 1st Premolar Extraction Cases At 6 Weeks Reactivation Interval. A Clinical Trial., Rodayna A. Elbadawy, Kareem Elazab, Amr R. El-Beialy, Hend Salah

Future Dental Journal

Abstract:

Purpose: the aim of this clinical trial is to investigate maxillary first molar rotation during maxillary canine retraction at 6 weeks re-activation intervals with elastic power chain in first premolar extraction cases. Material and methods: a total of 20 quadrants of 10 orthodontic patients requiring maxillary canine retraction after extraction of upper 1st premolars were recruited. Mini-screws (TADs) were used directly for maximum anchorage. Canines were retracted on 0.016×0.022-inch stainless steel arch wire using elastic power chain extending from a power arm on canine bracket to the miniscrew. Cone beam computed tomography (CBCT) was used to measure the …


Comparison Of Alignment Duration Between 0.018” And 0.022” Slot Brackets In Non-Extraction Orthodontic Adult Patients: (A Randomized Clinical Study), Omar Hazem Abouwafia, Hala Munir Abdel Majeed, Mona Salah Fayed, Nouran Fouad Seif-Eldin May 2024

Comparison Of Alignment Duration Between 0.018” And 0.022” Slot Brackets In Non-Extraction Orthodontic Adult Patients: (A Randomized Clinical Study), Omar Hazem Abouwafia, Hala Munir Abdel Majeed, Mona Salah Fayed, Nouran Fouad Seif-Eldin

Future Dental Journal

Abstract:

Introduction: Orthodontist tend to use one of the 2 bracket slot sizes available either the 0.018” or 0.022” bracket slot. Till now there is no reliable scientific evidence that indicates if any of them has a superior effect on the duration of teeth alignment. The aim of this study is to compare alignment duration between 0.018 and 0.022-inch bracket slot systems.

Subjects and methods: 14 Eligible participants having an age range of 14-22 years were randomly allocated to 2 groups (7 in each group). Group I: 0.018-inch and Group II: 0.022-inch slot (American orthodontics Mini master Roth prescription …


Effects Of Full-Time Versus Part-Time Clear Aligner Wear On Periodontal Health, Pain And Compliance In Orthodontic Patients, Mohamed Adel Afify, Ahmed Medhat Eltimamy, Fouad A. El Sharaby, Hala Monir Abdelmajeed May 2024

Effects Of Full-Time Versus Part-Time Clear Aligner Wear On Periodontal Health, Pain And Compliance In Orthodontic Patients, Mohamed Adel Afify, Ahmed Medhat Eltimamy, Fouad A. El Sharaby, Hala Monir Abdelmajeed

Future Dental Journal

INTRODUCTION: Clear aligner treatment's main drawback is that the patient decides how long to wear them each day. For clear aligner therapy to be successful, compliance is essential. A poor treatment outcome would arise from noncompliant patients.

METHODS: The study was a randomized clinical trial of 2 parallel groups (7 patients per group) who underwent clear aligner orthodontic treatment having an age range of 17-24 years. A part-time group wore the aligners for 16 hours per day and a full-time group wore the aligners for 22 hours per day. The study investigated the first eight aligners of the treatment. Compliance …


Comparison Between Orthodontic Measurements Taken From Cone-Beam Computed Tomography (Cbct) And Digital Models After Enmasse Retraction In Orthodontic Patients With Maxillary Protrusion., Amr M. Attia, Amr R. El-Beialy, Heba M. Dehis, Yehya A. Moustafa May 2024

Comparison Between Orthodontic Measurements Taken From Cone-Beam Computed Tomography (Cbct) And Digital Models After Enmasse Retraction In Orthodontic Patients With Maxillary Protrusion., Amr M. Attia, Amr R. El-Beialy, Heba M. Dehis, Yehya A. Moustafa

Future Dental Journal

ABSTRACT

Objectives: This study aimed to evaluate the accuracy and reliability in measuring anchorage loss, molar rotation, and total amount of retraction using cone beam computed tomography (CBCT) and to compare them with the same measurements obtained using digitally scanned dental models. Materials and methods: 24 patients requiring comprehensive orthodontic treatment including extraction of 1st premolars with maximum anchorage using enmasse retraction. CBCTs were undertaken on the same 24 patients using InVivoDental software for measurement. The digital cast was made using alginate impressions, from which virtual 3D models will be created and measured using 3Shape analyzer software. Orthodontic measurements will …


Measuring Accuracy Of Dolphin Imaging Software In Predicting Upper Jaw Soft Tissue Profile Changes In Class Ii Adult Patients Treated With Extraction Versus Non-Extraction., Amr Amin Arif, Esam Nasef, Amira Aboalnaga May 2024

Measuring Accuracy Of Dolphin Imaging Software In Predicting Upper Jaw Soft Tissue Profile Changes In Class Ii Adult Patients Treated With Extraction Versus Non-Extraction., Amr Amin Arif, Esam Nasef, Amira Aboalnaga

Future Dental Journal

Abstract

Objective: To assess the accuracy of Dolphin Imaging software in predicting upper jaw profile changes in class II patients treated by extraction and non-extraction.

Methods: The records of 60 Class II div 1 patients were selected; 30 patients treated by extraction of upper first premolar and 30 patients treated by non-extraction. The Pre- and post-treatment lateral cephalometric x-rays of each patient were traced using Dolphin software. The actual hard tissue changes due to treatment were calculated and installed into the prediction module to generate the predicted profile. The soft tissue measurements of the actual post-treatment and predicted profiles were …


Early Intervention Within Orthodontics: The Sociological Aspects, Trenton Hammond May 2024

Early Intervention Within Orthodontics: The Sociological Aspects, Trenton Hammond

Honors Theses

Orthodontic treatment is one of the final phases of dental treatment. Its use is to provide aesthetics in some cases, yet the quality-of-life aspect that it can provide is greatly underestimated. Orthodontic care can provide proper function of teeth, improve facial structure, avoid tooth decay/loss, and improve gum health (AAO, 2024). Within this research the overarching goal is to understand the sociological aspects of families looking to start orthodontic care, what the reasons behind starting or not starting are, and providing information to the public about orthodontics that may be misunderstood or might push people away from searching for orthodontic …


The Reliability Of Soft Tissue Profile Analysis Comparing Photoshop And Cephalometric Measurements In Maxillary Protrusion Patients, Sara Usama Imam, Heba Dehis, Nagwa Elmangoury, Amr El-Beialy Jan 2024

The Reliability Of Soft Tissue Profile Analysis Comparing Photoshop And Cephalometric Measurements In Maxillary Protrusion Patients, Sara Usama Imam, Heba Dehis, Nagwa Elmangoury, Amr El-Beialy

Future Dental Journal

Abstract

Introduction: Cephalometric x-ray is considered as a crucial step in orthodontic diagnosis and treatment planning. However, patients nowadays, especially those pursuing cosmetic goals, are concerned about radiation dosages as a result of increased understanding. Therefore, the aim of this study is to provide a simple reliable, affordable and reproducible way to evaluate the soft tissue measures for creating an orthodontic treatment plan.

Methods: Comparing standardized profile photographs and lateral cephalograms were obtained from twenty-eight patients with maxillary protrusion of the age group between 14 – 24 years before and after retraction. Evaluation and comparison were done for cephalometric x-ray …


Evaluation Of Pain Perception Associated With Maxillary First Molars Distalization In The Presence Of Maxillary Third Molars Versus Extracted Third Molars Using Infra-Zygomatic Mini-Screws: A Randomized Clinical Trial, Nadeen H. Hafez, Yehya A. Mostafa, Amr E. El-Dakroury, Mostafa M. El-Dawlatly Jan 2024

Evaluation Of Pain Perception Associated With Maxillary First Molars Distalization In The Presence Of Maxillary Third Molars Versus Extracted Third Molars Using Infra-Zygomatic Mini-Screws: A Randomized Clinical Trial, Nadeen H. Hafez, Yehya A. Mostafa, Amr E. El-Dakroury, Mostafa M. El-Dawlatly

Future Dental Journal

Aim: The purpose of this randomized clinical trial was to compare the pain associated with distalizing maxillary first molars with the presence versus extraction of unerupted third molars using infra-zygomaic mini -screws in a group of adolescent female patients.

Study design: This randomized clinical trial (parallel group design) was approved by the Research Ethics Committee of the Faculty of Dentistry, Future University in Egypt

Materials and methods: 30 patients requiring bilateral maxillary molar distalization using infra-zygomatic mini-implant were randomly allocated to third molar extraction (TME) or third Molar presence (TMP) groups

All patients were asked to assess their pain levels …


Comparing Program Compatibility For Dental Operators Between Different In-Office Clear Aligners Software, Karim Ibrahim Hammam, Essam Nassef, Mostafa Al Dawltaly Jan 2024

Comparing Program Compatibility For Dental Operators Between Different In-Office Clear Aligners Software, Karim Ibrahim Hammam, Essam Nassef, Mostafa Al Dawltaly

Future Dental Journal

Aim: The aim of the present study was to compare program compatibility for dental operators between different in office clear aligners software: (3D Maestro,3shape, BlueSky bio, Plainmeca). Materials and methods: 4 in office clear aligners software: (3D Maestro,3shape, BlueSky bio, Plainmeca) were used. Ten orthodontists were recruited for the evaluation process, A total of 48 casts were used including upper and lower arches for each case. Each orthodontist made a check mark on each option in the pre-made scoring template.A check mark with YES was given a One point, and a check mark with NO was given Zero point. Results: …


Assessment Of External Apical Root Resorption Following En-Masse And Two Steps Retraction In Maxillary Protrusion Cases: A Randomized Controlled Clinical Trial, Aya Ahmed El Ashwal, Heba Mohamed Dehis, Faten Eid Jan 2024

Assessment Of External Apical Root Resorption Following En-Masse And Two Steps Retraction In Maxillary Protrusion Cases: A Randomized Controlled Clinical Trial, Aya Ahmed El Ashwal, Heba Mohamed Dehis, Faten Eid

Future Dental Journal

Aim: The aim of this study was to investigate the degree of external apical root resorption (EARR) following En-masse retraction (EM) and compared it to two steps retraction technique (TS) using friction mechanics.

Materials and Methods: Thirty adult female with maxillary protrusion were randomly allocated by a computer sequence generator with 1:1 allocation ratio. EM group (mean age = 17.7 ± 1.89 years) and TS group (mean age = 17.7 ± 1.77 years). Mini-screws were inserted followed by first premolars extraction then randomization was accomplished. Patients received treatment with either EM procedure or TS to close the extraction spaces after …


Knowledge, Attitude And Clinical Management Of Orthodontically - Induced External Root Resorption Among Lebanese Orthodontists., Diana Chehab Fakih, Ahmad Tarabaih, Aly Osman Jan 2024

Knowledge, Attitude And Clinical Management Of Orthodontically - Induced External Root Resorption Among Lebanese Orthodontists., Diana Chehab Fakih, Ahmad Tarabaih, Aly Osman

International Arab Journal of Dentistry

Objective: The aim of this study was to assess the knowledge, attitude, and

clinical management orthodontically induced external root resorption (OIERR)

among Lebanese orthodontists of varying years of experience.

Methods: An online validated survey of 22 questions regarding OIERR was

done among a randomly selected registered sample of 145 male and female

Lebanese orthodontists.

Results: Significant differences were found among orthodontists with different

years of experience for factors leading to further investigation, the stage at

which additional screening measures were taken, periodic follow up assessment

method, and clinical management in case of generalized root loss of one-third

or more than …


Proceedings Of The 2023 Iaom Convention, International Association Of Orofacial Myology Oct 2023

Proceedings Of The 2023 Iaom Convention, International Association Of Orofacial Myology

International Journal of Orofacial Myology and Myofunctional Therapy

The International Association of Orofacial Myology (IAOM) held its 2023 Convention in Chandler, Arizona from October 13 - 15. The Proceedings of the Convention contain abstracts and summaries of podium and poster presentations.


Maxillary And Mandibular Incisor And Molar Dentoalveolar Heights In Untreated Subjects Presenting Class I And Class Ii Malocclusion, Samantha Zavada Cardinal Jul 2023

Maxillary And Mandibular Incisor And Molar Dentoalveolar Heights In Untreated Subjects Presenting Class I And Class Ii Malocclusion, Samantha Zavada Cardinal

Master's Theses (2009 -)

Objective : Class II malocclusion has been extensively studied, however there are many unanswered questions. This study analyzed the difference in incisor and molar dentoalveolar heights of untreated subjects presenting with Class I and Class II malocclusion. Dentialveolar heights are an aspect of the craniofacial complex that changes with growth and development and are manipulated by orthodontists. These changes hold important clinical implications for the development, maintenance and treatment of malocclusions. Methods : A sample of 96 untreated Class I and Class II subjects, with a total of 611 cephalograms was drawn from the archives of the University of Michigan …


Evaluation Of Accuracy Of Intraoral Scanners Versus Extra Oral Scanners In Different Dental Arch Measurements, Mohamed Walid Saleh, 20143278@Fue.Edu.Eg , Future University In Egypt, Fouad Sharaby Fsharaby@Dentistry.Cu.Edu.Eg , Associate Professor Of Orthodontic Department Of Orthodontics Faculty Of Dentistry Cairo University, Essam Nassef Essam.Nasssef@Fue.Edu.Eg , Professor Of Orthodontic Department Of Orthodontics Faculty Of Oral And Dental Medicine Future University In Egypt Jun 2023

Evaluation Of Accuracy Of Intraoral Scanners Versus Extra Oral Scanners In Different Dental Arch Measurements, Mohamed Walid Saleh, 20143278@Fue.Edu.Eg , Future University In Egypt, Fouad Sharaby Fsharaby@Dentistry.Cu.Edu.Eg , Associate Professor Of Orthodontic Department Of Orthodontics Faculty Of Dentistry Cairo University, Essam Nassef Essam.Nasssef@Fue.Edu.Eg , Professor Of Orthodontic Department Of Orthodontics Faculty Of Oral And Dental Medicine Future University In Egypt

Future Dental Journal

Background: Orthodontics has been influenced by new technologies in many areas. There is a shift toward digitization of patient’s information and data. Aim: The aim of this study was to compare the accuracy of intraoral scanner and extra oral scanners using different dental arch measurements. Materials and Methods: The sample size consisted of 44 dental stone models for patients who finished orthodontic treatment. For each subject two digital models were made, one digital model obtained from extra oral scanner and one digital model obtained from Intra oral scanner. An external examiner measured intermolar width, intercanine width, mesiodistal width of the …


Changes In Lip Length And Strain After En-Masse Retraction With Maximum Anchorage In Female Patients With Bimaxillary Protrusion, Leena Shibl, Amr El-Beialy, Yehya Mostafa, Heba Dehis Jun 2023

Changes In Lip Length And Strain After En-Masse Retraction With Maximum Anchorage In Female Patients With Bimaxillary Protrusion, Leena Shibl, Amr El-Beialy, Yehya Mostafa, Heba Dehis

Future Dental Journal

Aim: The aim of the study is to evaluate the effect of en-masse retraction with maximum anchorage on the lip length, lip strain, and interlabial gap in adult female patients with bimaxillary protrusion. Materials and Methods: Thirteen patients underwent initial records including photographs, study casts, and cephalometric x-rays. En-masse retraction was performed using friction mechanics, with the use of temporary anchorage devices and power chains after the extraction of first premolars. The soft tissue was analyzed using lateral cephalometric radiographs before and after retraction. Results: The results showed that en-masse retraction had a significant effect on reducing lip strain, increasing …


Questionnaire Survey On Pain & Mini-Implant Failure In Class Ii Female Patients After Extraction Of Maxillary Second Molars Using Infra Zygomatic Mini Implants, Hosam Abdullah Zaza, Nagwa El Mangoury, Amr El Dakrory, Mostafa El Dawlatly Jun 2023

Questionnaire Survey On Pain & Mini-Implant Failure In Class Ii Female Patients After Extraction Of Maxillary Second Molars Using Infra Zygomatic Mini Implants, Hosam Abdullah Zaza, Nagwa El Mangoury, Amr El Dakrory, Mostafa El Dawlatly

Future Dental Journal

Background: Skeletal anchorage devices have been developed for case requiring absolute anchorage during orthodontic treatment. One of these anchorage devices is the Infra-zygomatic mini-implant type. However, the pain associated with this type of appliance have not been sufficiently evaluated from the patient’s point of view. Aim: The aim of this study was to survey patients for one week after insertion of the infra-zygomatic mini-implants and 1 week following every reactivation in order to evaluate their pain and discomfort as well as the percentage of mini-screw failure. Materials and methods: 10 patients requiring infra-zygomatic mini-implants were selected. All participants completed questionnaires …


Analysis Of Smile Characteristics Of Adult Female Subjects With Skeletal Class Ii Division 2 Malocclusion, Ahmed Ibrahim Nabawi, Fouad A. El Sharaby Jan 2023

Analysis Of Smile Characteristics Of Adult Female Subjects With Skeletal Class Ii Division 2 Malocclusion, Ahmed Ibrahim Nabawi, Fouad A. El Sharaby

Future Dental Journal

Aim: The objective of this study was to evaluate the smile characteristics of adult females with Angle Class II division 2 malocclusion compared to Angle Class I malocclusion. Materials and Methods: Two frontal photographs were taken for 30 orthodontically untreated female adult subjects with age range (18-30) years, at rest and posed smile from a fixed (1.5m) distance between the camera and the subjects. The 30 subjects were divided into 2 groups, 15 for Class II div 2 subjects and 15 for Class I subjects. The camera was focused only on the mouth, showing from the nose to the chin. …


A Six-Month Comparison Of Orthodontic Pain Associated With Fixed Edgewise Appliances And Clear Aligners, Victor Chan Jan 2023

A Six-Month Comparison Of Orthodontic Pain Associated With Fixed Edgewise Appliances And Clear Aligners, Victor Chan

Theses and Dissertations

Title: A Six-Month Comparison of Orthodontic Pain Associated with Clear Aligners and Fixed Edgewise Appliances

Objective: To document and compare pain perception, intensity, and analgesic use over a sixmonth period between patients treated with fixed appliances (FA) and clear aligners (CA).

Methods: A prospective, parallel, two-arm, multi-center, longitudinal cohort study was conducted with 87 adults treated with CA (n=59) or FA (n=28). Subjects were selected according to inclusion and exclusion criteria. A seven-item, digital survey was sent at three timepoints (preappointment, 2-days post-appointment, and 7-days post-appointment) at each adjustment over a six-month period. The variables measured included pain experience, pain …


Motivations Of Adult Patients Seeking Orthodontic Retreatment, Scott V. Philips Jan 2023

Motivations Of Adult Patients Seeking Orthodontic Retreatment, Scott V. Philips

Theses and Dissertations

Objective: The aims of this study were (1) to compare the reasons adult patients seek orthodontic first-time treatment to the reasons adult patients seek orthodontic retreatment, and (2) to compare the concerns, motivations, and satisfaction levels of adult patients seeking orthodontic retreatment across the different previous treatment provider types of orthodontist, general dentist, and Direct-to-Consumer company.

Methods: At their initial orthodontic visit, adult patients (N=108) were invited to participate in the digital survey (REDCap) study. Subjects were recruited from the graduate orthodontics clinic at Virginia Commonwealth University and seven private orthodontic practices across the United States. Visual Analogue Scales were …


Accuracy Of "Reading" Untraced Lateral Cephalometric Radiographs Among Practicing Orthodontists, Shannon Rea Jan 2023

Accuracy Of "Reading" Untraced Lateral Cephalometric Radiographs Among Practicing Orthodontists, Shannon Rea

All ETDs from UAB

Objective: To determine if orthodontic clinicians are able to ascertain diagnostic information from untraced lateral cephalometric radiographs. Materials and Methods: A survey consisting of 5 cases was presented to practicing orthodontists. Each case presented a lateral cephalometric radiograph and included ten questions requiring the respondent to make clinical judgments and approximations of the following variables: skeletal classification, maxilla and mandibular skeletal relationship, SNA, SNB, ANB, vertical skeletal classification, FMA, molar relationship, maxillary incisor proclination, and mandibular incisor proclination. 46 responses were collected and analyzed. Results: Case 3, the normodivergent, Skeletal Class I patient had the highest percentage of correct answers …


Synthetic Elastomeric Chain– A Literature Review, Wan-Tin Lin, Hsin-Chung Cheng, Yung-Kang Shen, Yi-Jyun Chen, Chien-Feng Chen Aug 2022

Synthetic Elastomeric Chain– A Literature Review, Wan-Tin Lin, Hsin-Chung Cheng, Yung-Kang Shen, Yi-Jyun Chen, Chien-Feng Chen

Taiwanese Journal of Orthodontics

Elastomeric chains were introduced to the orthodontic profession in the 1960s’, and are now an integral part of every day practices. They are used to generate light continuous forces for correcting rotations, consolidating spaces, and retraction canines. They are inexpensive, easily applied, relatively hygienic and require little or no patient cooperation. Elastomeric chain, however, are nor without their disadvantages. When exposed to an oral environment, they absorb water and saliva, permanent stain, and suffer breakdown of internal binds leading to permanent deformation. They also experience rapid loss of force due to stress relaxation, resulting in a gradual loss of effectiveness. …


Comparison Of Two Different Treatment Methods On White Spot Lesions After Orthodontic Treatment, Li-Ling Kao, Hsiu-Ming Hsu, Chuan-Yang Chang, Jia-Kuang Liu Aug 2022

Comparison Of Two Different Treatment Methods On White Spot Lesions After Orthodontic Treatment, Li-Ling Kao, Hsiu-Ming Hsu, Chuan-Yang Chang, Jia-Kuang Liu

Taiwanese Journal of Orthodontics

The aims of the study were to compare the degree of demineralization and the size alteration of white spot lesions after orthodontic treatment using fluoride dentifrice or tooth mousse therapy. Twelve upper incisors with demineralized white spot lesions of eight participants were identified after fixed appliances were removed. These participants were randomly and double blindly assigned to use one of the two dentifrices (TM and FD). Degree of demineralization was examined using DIAGNodent pen and digital photographs were taken at bracket removal, 4 weeks and 8 weeks later. Image J, one image processing software, was used to measure the size …


Intraoral Iatrogenic Injuries In Orthodontics: Etiology, Prevention, And Management, Te-Yi Teng, Yu-Kun Chih Aug 2022

Intraoral Iatrogenic Injuries In Orthodontics: Etiology, Prevention, And Management, Te-Yi Teng, Yu-Kun Chih

Taiwanese Journal of Orthodontics

The iatrogenic injuries, which often lead to medical tangles, have been widely discussed in recent years.The areas of intraoral iatrogenic injuries in orthodontics include both hard tissues and soft tissues: tooth, alveolar bone, gingiva, oral mucosa, nerve and so on. Almost every procedure during orthodontic therapy could result in unpredictable injuries. To avoid negative effects, the clinicians should understand all causes of various iatrogenic injuries, and take measures during orthodontic treatment. This article discusses the etiologies, prevention and management of intraoral injuries, and it may help for clinicians.


The Historical Progress Of The Orthodontics, Part Ii, Te-Ju Wu, Wen-Ching Tsai Aug 2022

The Historical Progress Of The Orthodontics, Part Ii, Te-Ju Wu, Wen-Ching Tsai

Taiwanese Journal of Orthodontics

In the end of 19th century, based on hard working of predecessors, orthodontics has more glory development; many orthodontic theory and appliances were displayed. Among them, Edward Angle,「The father of modern orthodontics」,played the most important role. Owing to his passion and devotion of orthodontics, the profile of orthodontics was getting more and more clear. There are so many conflicts and controversy during the development of orthodontics. However, it is the agitation that bring the orthodontics whole new appearance, also with the improvement of clinical efficiency, the orthodontics is getting more close to the need of patient and the ideal treatment …


The Historical Progress Of The Orthodontics, Part I, Te-Ju Wu, Wen-Ching Tsai Aug 2022

The Historical Progress Of The Orthodontics, Part I, Te-Ju Wu, Wen-Ching Tsai

Taiwanese Journal of Orthodontics

The orthodontic treatment has become the popular choice while the public seeking for optimal occlusal function and esthetics. The discomfort accompanied with the treatment progress is gradually faded out by the post-treatment surprise. Taking a broad view, as the secret veil is lift off, the modern orthodontic treatment is chasing a whole new vision vigorously. However, as seeing the past, we should realize what we get now is not easily come by. Beginning from a division of oral medical science, the orthodontics is now regarded as a professional specialty. With the diversity, splash and the persistency for outstanding, the every …


Mechanism Of Mechanical Vibration In Enhancing Orthodontic Retention- Analysis Of Global Gene Expression, Shuwei Wang Jul 2022

Mechanism Of Mechanical Vibration In Enhancing Orthodontic Retention- Analysis Of Global Gene Expression, Shuwei Wang

Master's Theses (2009 -)

Introduction: Low-magnitude, high-frequency (LMHF) mechanical vibration has been proposed as a possible adjunctive retention method after orthodontic treatment. In this study, we explored the mechanism of using LMHF vibration to improve bone formation during retention phase. We aimed to provide insight of global gene expression and cellular activities of PDL cells under tension, as well as identify novel biomarkers for induced osteogenesis by using LMHF mechanical vibration as adjunct tool in retention phase. Materials and Methods: Human PDL cells (hPDLCs) were seeded in 6-well FLEXCELL culture plates. The wells were assigned to four experimental groups as control, stretching (ST), vibration …


Evaluation Of Damon Psl And Conventional Mbt Brackets In Leveling And Alignment Efficiency, Jacob Beckstrand Jul 2022

Evaluation Of Damon Psl And Conventional Mbt Brackets In Leveling And Alignment Efficiency, Jacob Beckstrand

Master's Theses (2009 -)

Objective: Ormco has proposed that the low-friction design of their self-ligation brackets allows for more efficient alignment of crowded teeth with less incisor proclination and faster treatment times compared to conventional MBT bracket systems. The purpose of this study is to examine the hypothesis that there is no difference between Damon PSL and conventional MBT brackets in factors related to leveling and alignment in-vitro. Methods:Damon Q2 .022” slot brackets and 3M Unitek .022” slot MBT brackets were bonded to 2 sets of typodont teeth. Typodont teeth were placed into 8 upper and lower Class I crowding wax forms (Kilgore, USA) …


Evaluation Of Anchorage Loss Following Anterior Segment Retraction Using Friction Versus Frictionless Mechanics: A Randomized Clinical Trial, Dorra Izzat Bakhit, Heba Mohamed Dehis, Yehia A. Moustafa, Fouad A. El Sharaby Jun 2022

Evaluation Of Anchorage Loss Following Anterior Segment Retraction Using Friction Versus Frictionless Mechanics: A Randomized Clinical Trial, Dorra Izzat Bakhit, Heba Mohamed Dehis, Yehia A. Moustafa, Fouad A. El Sharaby

Future Dental Journal

Objective: Evaluation of anchorage loss following anterior segment retraction (ASR) using friction versus frictionless mechanics when mini-screws are directly and indirectly loaded using Cone beam computed tomography (CBCT). Material and methods: Thirty females with bimaxillary protrusion were randomly allocated into two groups, friction and frictionless. In friction group, a hook was crimped on 0.017- by 0.025-inch stainless steel wire distal to the lateral incisor and elastomeric chain rendering 160 g/side extending between the hook and mini-screw implant to complete the ASR. In the frictionless group, canines were ligated to the mini-screws for indirect anchorage then ASR was done using closing …


Canine Retraction Rate And Angulation With 0.017”X0.025” Versus 0.016”X0.022” Stainless Steel Arch Wire With A Power Arm, Amr R. El-Beialy, Fouad A. El Sharaby, Hend S. Elsayed Jun 2022

Canine Retraction Rate And Angulation With 0.017”X0.025” Versus 0.016”X0.022” Stainless Steel Arch Wire With A Power Arm, Amr R. El-Beialy, Fouad A. El Sharaby, Hend S. Elsayed

Future Dental Journal

Background: The dimensions of the arch wire affect its stiffness and the play between the wire and bracket. Canine retraction over stiffer arch wires limits the degree of canine tipping. However, the greater the wire dimensions, the greater the resistance to sliding. Frictional resistance is known to delay tooth movement. Aim: The aim of this controlled clinical trial was to compare canine retraction rate and angulation with 0.017”X0.025” versus 0.016”X0.022” stainless steel arch wire with a power arm. Materials and Methods: Twenty-four Class II malocclusion patients (age 13.8± 2.6 years) participated in this study. The teeth were leveled and aligned. …


J Mich Dent Assoc April 2022 Apr 2022

J Mich Dent Assoc April 2022

The Journal of the Michigan Dental Association

Monthly, The Journal of the Michigan Dental Association brings news, information, and feature articles to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this April 2022 issue, the reader will find the following original content:

  • A cover feature “Protect Your Patients and Yourself: The Complete and Honest Medical History”
  • A feature article “The Foundation for Dental Care: The Patient Interview and Dental/Medical Health History”
  • A 10-Minute EBD “The Preferred Analgesia for Orthodontic Tooth Movement: Acetaminophen or NSAIDs?”
  • News you need: an Editorial, a "Reminder about Antitrust Law", and regular department articles, …