keyword
MENU ▼
Read by QxMD icon Read
search

Miniscrew

keyword
https://www.readbyqxmd.com/read/28917071/quantitative-evaluation-of-palatal-bone-thickness-for-the-placement-of-orthodontic-miniscrews-in-adults-with-different-facial-types
#1
Yunji Wang, Ye Qiu, Henglang Liu, Jinlong He, Xiaoping Fan
To quantitatively evaluate palatal bone thickness in adults with different facial types using cone beam computed tomography (CBCT).  Methods: The CBCT volumetric data of 123 adults (mean age, 26.8 years) collected between August  2014 and August 2016 was retrospectively studied. The subjects were divided into a low-angle group (39 subjects), a normal-angle group (48 subjects) and a high-angle group (36 subjects) based on facial types assigned by cephalometric radiography. The thickness of the palatal bone was assessed at designated points...
October 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28893543/effect-of-piezoelectric-sutural-ostectomies-on-accelerated-bone-borne-sutural-expansion
#2
Akram S Alyessary, Adrian U J Yap, Siti A Othman, Mohammad T Rahman, Zamri Radzi
PURPOSE: The present study investigated the effect of piezoelectric sutural ostectomies on accelerated bone-borne sutural expansion. MATERIALS AND METHODS: Sixteen male New Zealand white rabbits (20 to 24 weeks old) were randomly divided into 4 experimental groups (n = 4): group 1, conventional rapid sutural expansion; group 2, accelerated sutural expansion; group 3, accelerated sutural expansion with continuous ostectomy; and group 4, accelerated sutural expansion with discontinuous ostectomy...
August 17, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28885034/treatment-outcomes-of-class-ii-malocclusion-cases-treated-with-miniscrew-anchored-forsus-fatigue-resistant-device-a-randomized-controlled-trial
#3
Osama Eissa, Mahmoud El-Shennawy, Safaa Gaballah, Ghada El-Meehy, Tarek El Bialy
OBJECTIVE: To evaluate the skeletal, dental, and soft tissue effects of the Forsus Fatigue Resistant Device (FRD) used with miniscrew anchorage and compare them with those of the conventional Forsus FRD. MATERIALS AND METHODS: This study was carried out on 38 patients. These patients were randomly allocated into three groups. The 14 patients in group 1 (aged 12.76 ± 1.0 years) were treated with the FRD appliance. In group 2, the 15 patients (aged 12.52 ± 1.12 years) received treatment with FRD using miniscrew anchorage, and the 9 patients in group 3 (aged 12...
September 8, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28863922/miniscrew-biomechanics-guidelines-for-the-use-of-rigid-indirect-anchorage-mechanics
#4
Sebastian Baumgaertel, Clark L Jones, Mustafa Unal
Indirect anchorage is an established form of anchorage provided by orthodontic miniscrews. Although there are different ways to set up the mechanics, rigid indirect anchorage offers the greatest biomechanical versatility but is more difficult to install than conventional, nonrigid indirect anchorage or direct anchorage. The purpose of this article was to introduce readers to the concept of rigid indirect anchorage and provide guidelines as to its use.
September 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28863910/influence-of-cortical-bone-thickness-on-miniscrew-microcrack-formation
#5
Melissa V Nguyen, John Codrington, Lloyd Fletcher, Craig W Dreyer, Wayne J Sampson
INTRODUCTION: The aim of this in-vitro study was to investigate the influence of cortical bone thickness on the amount of surface microdamage produced after insertion of orthodontic miniscrews (OM) in porcine tibia bone. METHODS: Aarhus OMs (Medicon, Tuttlingen, Germany; diameter, 1.5 mm; length, 6 mm) were inserted into 1.0 mm (group A; n = 10), 1.5 mm (group B; n = 10), and 2.0 mm (group C; n = 10) of porcine cortical bone using a torque-limiting hand screwdriver set at 18 Ncm...
September 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28861710/healing-of-root-and-surrounding-periodontium-after-root-damage-with-miniscrew-implants-a-histomorphologic-study-in-dogs
#6
Yingtao Lv, Zhaoqiang Zhang, Yuan Su, Peiyan Yuan, Weiqun Ma, Wenhua Huang, Pingping Xu
OBJECTIVES: The main purpose of this study was to investigate the detailed healing process of the roots and surrounding periodontium [cementum, periodontal ligament (PDL), and bone] at different time points after intentional root damage with miniscrew implants (MSIs). MATERIALS AND METHODS: After cone-beam computed tomography examination and measurement, a total of 78 premolar and molar roots from five beagle dogs were intentionally damaged by implanting miniscrews in the interradicular region...
August 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28861393/stability-of-dental-alveolar-and-skeletal-changes-after-miniscrew-assisted-rapid-palatal-expansion
#7
Hyun-Mook Lim, Young-Chel Park, Kee-Joon Lee, Kyung-Ho Kim, Yoon Jeong Choi
OBJECTIVE: Miniscrew-assisted rapid palatal expansion (MARPE) is a means for expanding the basal bone without surgical intervention in young adults. Here, we assessed the differences in dental, alveolar, and skeletal measurements taken before (T0), immediately after (T1), and 1 year after (T2) MARPE. METHODS: Twenty-four patients (mean age, 21.6 years) who had undergone MARPE and cone-beam computed tomography at T0, T1, and T2 were included. Changes in the following parameters were compared using paired t-tests: intercusp, interapex, alveolar, nasal floor, and nasal cavity widths; inclination of the first molar (M1) and its alveolus; and thickness and height of the alveolar bone...
September 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28861392/the-effect-of-fluoride-containing-oral-rinses-on-the-corrosion-resistance-of-titanium-alloy-ti-6al-4v
#8
Gui-Yue Huang, Heng Bo Jiang, Jung-Yul Cha, Kwang-Mahn Kim, Chung-Ju Hwang
OBJECTIVE: The purpose of this study was to examine the effect of commercially available fluoride-containing oral rinses on the corrosion behavior of titanium alloys, which are the main components of orthodontic miniscrews. METHODS: Four commercially available oral rinses (solution A, pH 4.46/260 ppm fluoride; solution B, pH 4.41/178 ppm fluoride; solution C, pH 6.30/117 ppm fluoride; and solution D, pH 4.17/3.92 ppm fluoride) were tested on titanium alloy (Ti-6Al-4V) circular plates, and saline was used as the control...
September 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28760284/prognosis-of-primary-and-secondary-insertions-of-orthodontic-miniscrews-what-we-have-learned-from-500-implants
#9
Shunsuke Uesugi, Satoshi Kokai, Zuisei Kanno, Takashi Ono
INTRODUCTION: Although the success of using orthodontic miniscrews for primary insertion has been reported in the literature, few studies have followed up on secondary insertions after failure of the first insertion. In this study, we investigated not only the primary but also secondary success rates of miniscrews and considered the risk factors influencing their stability. METHODS: Five hundred miniscrews were inserted for orthodontic anchorage in 240 patients...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28746493/miniscrew-assisted-rapid-palatal-expansion-for-managing-arch-perimeter-in-an-adult-patient
#10
Amanda Carneiro da Cunha, Hisun Lee, Lincoln Issamu Nojima, Matilde da Cunha Gonçalves Nojima, Kee-Joon Lee
Introduction: Etiology of dental crowding may be related to arch constriction in diverse dimensions, and an appropriate manipulation of arch perimeter by intervening in basal bone discrepancies cases, may be a key for crowding relief, especially when incisors movement is limited due to underlying pathology, periodontal issues or restrictions related to soft tissue profile. Objectives: This case report illustrates a 24-year old woman, with maxillary transverse deficiency, upper and lower arches crowding, Class II, division 1, subdivision right relationship, previous upper incisors traumatic episode and straight profile...
May 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28717633/cementum-and-dentin-repair-following-root-damage-caused-by-the-insertion-of-self-tapping-and-self-drilling-miniscrews
#11
Majid Ghanbarzadeh, Farzin Heravi, Reihaneh Abrishamchi, Hooman Shafaee, Narges Ghazi, Parya Heravi, Hamid Ghanbarzadeh
OBJECTIVE: The aim of this study was to evaluate the histological responses of cementum, root dentin, and pulp following intentional root injuries caused via self-tapping and self-drilling miniscrews. MATERIALS AND METHODS: Fourteen patients (with a mean age of 15.7 years and age range of 14-18 years) who were scheduled for the extraction of all four first premolars as part of their orthodontic treatment plan participated in this study. The roots of the right and the left quadrants' first premolars were designedly injured using self-tapping miniscrews and self-drilling miniscrews, respectively...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28670565/effects-of-recycling-on-the-biomechanical-characteristics-of-retrieved-orthodontic-miniscrews
#12
Soon-Dong Yun, Sung-Hwan Choi, Jung-Yul Cha, Hyung-Seog Yu, Kwang-Mahn Kim, Jin Kim, Chung-Ju Hwang
OBJECTIVE: The aim of this study was to compare recycled and unused orthodontic miniscrews to determine the feasibility of reuse. The comparisons included both miniscrews with machined surfaces (MS), and those with etched surfaces (ES). METHODS: Retrieved MS and ES were further divided into three subgroups according to the assigned recycling procedure: group A, air-water spray; group B, mechanical cleaning; and group C, mechanical and chemical cleaning. Unused screws were used as controls...
July 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28668944/miniscrew-supported-orthodontic-pseudo-ankylosis-for-mesialization-of-a-lower-third-molar
#13
Nicola Derton, Daniela Lupini, Mauro Cozzani
No abstract text is available yet for this article.
May 2017: Journal of Clinical Orthodontics: JCO
https://www.readbyqxmd.com/read/28651755/miniscrew-assisted-customized-lingual-appliances-for-predictable-treatment-of-skeletal-class-ii-malocclusion-with-severe-deep-overbite-and-overjet
#14
Xue-Dong Wang, Fei-Fei Lei, Da-Wei Liu, Jie-Ni Zhang, Wei-Tao Liu, Yang Song, Yan-Heng Zhou
This report describes the use of miniscrew-assisted customized lingual fixed appliances in a patient with severe skeletal Class II malocclusion. The patient was a 12-year-old Chinese girl with the chief complaint of protrusive lips and anterior teeth. Her diagnosis included a skeletal Class II relationship with maxillary protrusion, a backward-rotated mandible, a full Angle Class II molar relationship, and severe deep overjet and overbite. Four premolars were extracted, and miniscrew anchorage was placed in the maxillary posterior lingual segment to provide maximum anchorage and to achieve vertical control of the intruding molars...
July 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28611332/gingival-tissue-proliferation-into-the-tooth-following-iatrogenic-miniscrew-insertion-a-newer-underreported-complication
#15
Thavarajah Rooban, Nathamuni Rengarajan Krishnaswamy, Valai Kasim Shakeel Ahmed
Miniscrew implant (MSI) has been reported to be an excellent, supportive orthodontic anchorage tool. The placement of MSI is not free from complication and foremost of which is penetration of MSI into the vital tooth structures. This case report is probably the first to report a newer underreported complication. Interestingly, a small bit of gingival tissue was found deep inside the dentin of the tooth, surviving and proliferating in the MSI-damaged zone. This case report is probably the first to give direct histological evidence in humans that a MSI can cause implantation phenomenon which has the potential to give rise to numerous pathologies including pulpal, periodontal, and cystic transformation...
March 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28558821/comparative-evaluation-of-insertion-torque-and-mechanical-stability-for-self-tapping-and-self-drilling-orthodontic-miniscrews-an-in-vitro-study
#16
Michele Tepedino, Francesco Masedu, Claudio Chimenti
BACKGROUND: The aim of the present study was to evaluate the relationship between insertion torque and stability of miniscrews in terms of resistance against dislocation, then comparing a self-tapping screw with a self-drilling one. METHODS: Insertion torque was measured during placement of 30 self-drilling and 31 self-tapping stainless steel miniscrews (Leone SpA, Sesto Fiorentino, Italy) in synthetic bone blocks. Then, an increasing pulling force was applied at an angle of 90° and 45°, and the displacement of the miniscrews was recorded...
May 30, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28554462/treatment-of-class-ii-malocclusion-with-mandibular-skeletal-anchorage
#17
Ezgi Cakir, Siddik Malkoç, Mustafa Kirtay
INTRODUCTION: The aim of this case report was to present the dentofacial changes obtained with bone anchorage in a Class II patient with moderate to severe crowding. METHODS: A boy, aged 14.5 years, with a dolichofacial type, convex profile, and skeletal and dental Class II relationships was examined. After evaluation, functional treatment with bone anchorage and 4 first premolar extractions was decided as the treatment approach. Miniplates were placed on the buccal shelves of the mandibular third molars...
June 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28550914/self-drilling-and-self-tapping-miniscrews-for-osteosynthesis-fixture-after-lefort-i-osteotomy-an-ex%C3%A2-vivo-trial-for-primary-stability-and-a-randomized-clinical-study
#18
RANDOMIZED CONTROLLED TRIAL
Irina Bolm, Elisabeth Goetze, Peer W Kämmerer, Robert Sader, Michelle Klos, Constantin Landes, Bilal Al-Nawas
BACKGROUND: Self-drilling osteosynthesis screws (SDS) have a potential higher primary stability together with clinical advantages such as less time effort compared to self-tapping screws (STS). The aims of the study were to compare the primary stability of SDS and STS ex vivo and to analyze of the time-saving effect in vivo. MATERIALS AND METHODS: Ex vivo, both screws were placed in porcine bone. Torque was measured for insertion and removal. Four specimens were kept in bone for histologic bone-to-implant-contact examination...
May 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28457276/nonsurgical-correction-using-miniscrew-assisted-vertical-control-of-a%C3%A2-severe-high-angle-with-mandibular-retrusion-and-gummy-smile-in-an-adult
#19
Xue-Dong Wang, Jie-Ni Zhang, Da-Wei Liu, Fei-Fei Lei, Wei-Tao Liu, Yang Song, Yan-Heng Zhou
Orthodontic treatment in adult patients with a skeletal discrepancy can be challenging. In this case report, we achieved both sagittal and vertical control by combining the classic sliding mechanics straight-wire technique with miniscrew anchorage. We treated a 21-year-old Chinese woman with a severe high mandibular plane angle, a retrusive chin, and a gummy smile. Her diagnosis included a skeletal Class II skull base with a mild anterior open bite, a protrusive maxilla, and a backwardly rotated mandible. This case underscores the importance of anchorage control in both the sagittal and vertical directions...
May 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28449060/the-influence-of-miniscrew-insertion-torque
#20
Melissa V Nguyen, John Codrington, Lloyd Fletcher, Craig W Dreyer, Wayne J Sampson
Objective: The aim of this in vitro study was to evaluate the progressive development of surface microdamage produced following the insertion of orthodontic miniscrews (OMs) into 1.5 mm thick porcine tibia bone using maximum insertion torque values of 12 Ncm, 18 Ncm, and 24 Ncm. Methods: Aarhus OMs (diameter 1.5 mm; length 6 mm) were inserted into 1.5 mm porcine bone using a torque limiting hand screwdriver set at 12 Ncm, 18 Ncm, and 24 Ncm. A custom rig equipped with a compression load cell was used to record the compression force exerted during manual insertion...
April 24, 2017: European Journal of Orthodontics
keyword
keyword
94967
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"