Yan Liu, Zhen-Jin Yang, Jing Zhou, Ping Xiong, Quan Wang, Yan Yang, Yu Hu, Jiang-Tian Hu
OBJECTIVE: To compare the clinical effectiveness of mini-implants (MIs) and conventional anchorage appliances used for orthodontic anchorage reinforcement in patients with class I or II malocclusion with bimaxillary protrusion. MATERIALS AND METHODS: Literature search was conducted through PubMed, Embase, and Cochrane from inception to July 2018. The following Medical Subject Heading terms were used for the search string: "skeletal anchorage", "temporary anchorage devices", "miniscrew implant", "mini-implant", "micro-implant"...
June 2020: Journal of Evidence-based Dental Practice
N V Popova, O I Arsenina, P I Makhortova, A V Popova, I A Shugaylov
The aim of the study was the development and substantiation of the method of orthodontic treatment of patients with malocclusions and deformities of dentoalveolar arches with the combined use of braces, orthodontic miniscrew, piezo-surgical corticotomy or laser corticotomy to improve the efficiency and reduce the time of complex treatment. The results of complex rehabilitation of 80 adult patients with dentoalveolar anomalies and deformities of dentition are presented. As a result of the orthodontic treatment of patients who underwent piezo-surgical corticotomy the bodily movement of the posterior teeth in the area of the previously removed tooth was achieved...
2020: Stomatologii︠a︡
Moina K Adeni, Ratna Parameswaran, Devaki Vijayalakshmi, Savan R Unni
The sequelae of chronic edentulous space is the supraeruption of the opposing teeth which hinders prosthodontic replacement. Molar intrusion of overerupted teeth can be done using miniscrew implants which serves as a promising technique, especially in adult patients. This case report highlights pre-prosthodontic therapy by pure molar intrusion using Temporary Anchorage Device (TAD) in an adult patient seeking prosthesis to enhance chewing efficiency.
March 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Mauro Cozzani, Ludovica Nucci, Daniela Lupini, Hedieh Dolatshahizand, Delaram Fazeli, Esmaeil Barzkar, Ehsan Naeini, Abdolreza Jamilian
OBJECTIVE: The miniscrew is effectively used to provide additional anchorage for orthodontic purposes. The aim of this study was to identify an optimal insertion angle for Jeil, Storm, and Thunder miniscrews on stress distribution at the bone miniscrew interface. MATERIALS AND METHODS: To perform 3-dimensional finite element model analysis, a 3-dimensional model with a bone block was constructed with type D2 of bone quality, and with miniscrews of Storm, Thunder, Jeil, with the diameter of 2, 1...
May 6, 2020: International Orthodontics
Eleftherios G Kaklamanos, Evangelia Gousopoulou, Lazaros Tsalikis
OBJECTIVE: Peri-miniscrew crevicular fluid (PMCF) analysis of biomarkers representing bone formation or resorption could provide a non-invasive way to monitor bone turnover around miniscrews and the response to force loading. Our objective was to systematically investigate the relevant available evidence. MATERIALS AND METHODS: Search without restrictions in eight databases and hand searching until March 2020 took place. We searched for prospective human studies measuring the levels of markers of bone formation and resorption in PMCF under the effect of orthodontic forces...
April 22, 2020: International Orthodontics
Saurabh Mohan Kamat, Rakshit Khandeparker, Francis Akkara, Vikas Dhupar, Ashwin Mysore
Membrane fixation in guided bone regeneration (GBR) has been traditionally achieved using resorbable pins, titanium tacks or miniscrews. However, these techniques are marredwith a number of clinical challenges. This article presents the "SauFRa" technique, a novel technique for stabilization of resorbable membranes in both, single as well as multiple implant sites while avoiding the shortcomings of other suturing techniques described in literature. Furthermore, the technique also eliminates the possibility of complications observed when using resorbable pins, titanium tacks or miniscrews, such as damage to adjacent roots during insertion...
April 21, 2020: Journal of Oral Implantology
Antonino Lo Giudice, Vincenzo Quinzi, Vincenzo Ronsivalle, Stefano Martina, Orazio Bennici, Gaetano Isola
The introduction of miniscrew-assisted rapid palatal expansion (MARPE) has widened the boundaries of orthodontic skeletal correction of maxillary transversal deficiency to late adolescence and adult patients. In this respect, Maxillary Skeletal Expander (MSE) is a particular device characterized by the engagement of four miniscrews in the palatal and nasal cortical bone layers. Thus, the availability of sufficient supporting bone and the perforation of both cortical laminas (bi-corticalism) are two mandatory parameters for mini-screw stability, especially when orthopedic forces are used...
April 12, 2020: Materials
Jian-Chao Wu, Yu-Ting Zheng, Yi-Jun Dai
Moving the mandibular posterior teeth into a severely atrophic edentulous space is a challenge. A carefully designed force-and-moment system that results in bodily protraction of the posterior teeth with balanced bone resorption and apposition is needed in such cases. This report describes the treatment of a 19-year-old woman with missing mandibular first molars due to juvenile periodontitis. Miniscrews were used as absolute anchorage during protraction of the mandibular second and third molars. Bodily mesial movement of the mandibular second and third molars was achieved over a distance of 11 to 17 mm after 39 months of orthodontic treatment...
March 2020: Korean Journal of Orthodontics
Daniele Cantarella, Gianpaolo Savio, Luca Grigolato, Paolo Zanata, Chiara Berveglieri, Antonino Lo Giudice, Gaetano Isola, Massimo Del Fabbro, Won Moon
Introduction: Miniscrew-assisted rapid palatal expansion (MARPE) appliances utilize the skeletal anchorage to expand the maxilla. One type of MARPE device is the Maxillary Skeletal Expander (MSE), which presents four micro-implants with bicortical engagement of the palatal vault and nasal floor. MSE positioning is traditionally planned using dental stone models and 2D headfilms. This approach presents some critical issues, such as the inability to identify the MSE position relative to skeletal structures, and the potential risk of damaging anatomical structures...
2020: Medical Devices: Evidence and Research
Abdulkarim A Hatrom, Khalid H Zawawi, Reem M Al-Ali, Hanadi M Sabban, Talal M Zahid, Ghassan A Al-Turki, Ali H Hassan
OBJECTIVES: To compare the amount of en-masse retraction with or without piezocision corticotomy, to assess the type of tooth movement, to evaluate root integrity after retraction, and to record reported pain levels. MATERIALS AND METHODS: This randomized, controlled clinical trial included 26 orthodontic patients requiring premolar extraction. The patients were divided into two groups: (1) an extraction with piezocision corticotomy group (PCG) and (2) an extraction-only group, which served as the control group (CG)...
March 26, 2020: Angle Orthodontist
Avinash Kaur, Om Prakash Kharbanda, Moganty R Rajeswari, Dinesh Kalyanasundaram
The peri-miniscrew implant crevicular fluid is analogous to gingival crevicular fluid, and its contents reflect the state of inflammation and health during the life of the miniscrews in the mouth. The stability of MSI is fundamental to its role as an anchorage. This study aimed to evaluate transforming growth factor-beta one (TGF-β1) of the peri-miniscrew implant crevicular fluid (PMICF), on implant insertion, pre- and post-loading of MSIs to find a clue to their role in the stability of MSI. Fifty-two MSIs sites were placed in the mouths of 13 patients aged 12-26 years undergoing orthodontic treatment...
April 2020: Journal of Oral Biology and Craniofacial Research
Felicia Miranda, José Carlos da Cunha Bastos, Alexandre Magno Dos Santos, Luiz Sergio Vieira, Aron Aliaga-Del Castillo, Guilherme Janson, Daniela Garib
The aim of this article is to report a case series of a miniscrew-anchored maxillary protraction therapy (MAMP). Two male patients presenting with Class III malocclusion were included in this report. The treatment consisted of a hybrid expander and two miniscrews at the anterior region of the mandible anchoring Class III elastics for maxillary protraction. Effective maxillary length, ANB angle and Wits appraisal increased after treatment. Slight dental effects were observed. MAMP therapy produced substantial skeletal effects and might be a good treatment option for Class III growing patients...
March 13, 2020: Journal of Orthodontics
A S Garcez, L C Barros, M R U Fernandes, D N Fujii, S S Suzuki, R Nepomuceno
INTRODUCTION: Peri-miniscrew inflammation is one of the causes of orthodontic miniscrew failure. OBJECTIVE: The aim of this study was to correlate the quantification throughout autofluorescence images and PCR microbiologic count of biofilm retained around orthodontic miniscrew and the presence of Porphyromonas gingivalis. MATERIALS AND METHODS: Forty miniscrews used for orthodontic treatment were evaluated during orthodontic treatment, collected from patients and divided into two groups: health and inflamed miniscrews...
February 29, 2020: Photodiagnosis and Photodynamic Therapy
Kemal Gulduren, Hayriye Tumer, Ulas Oz
PURPOSE: The aim was to study the effects of micro-osteoperforations (MOPs) on miniscrew-supported maxillary molar distalization. METHODS: As part of a single center, split-mouth, randomized clinical trial, 20 eligible subjects were randomly recruited from patients who had applied to the orthodontics department of a university dental hospital. In the experimental group, subjects were randomized to receive MOPs to either the left or right maxillary molar region (n = 10)...
March 2020: Journal of Orofacial Orthopedics
Basema Alqadasi, Khalid Aldhorae, Esam Halboub, Nasrin Mahgoub, Akram Alnasri, Ali Assiry, Hou Y Xia
Aim: A major challenge in orthodontics is decreasing treatment time without compromising treatment outcome. The purpose of this split-mouth trial was to evaluate micro-osteoperforations (MOPs) in accelerating orthodontic tooth movement. Materials and Methods: Eight patients of both genders were selected, age ranging between 15 and 40 years, with Class II Division 1 malocclusion. The participants in this trial with MOPs were randomly allocated to either the right or the left side, distal to the maxillary canine...
November 2019: Journal of International Society of Preventive & Community Dentistry
Alice Spitz, Ricardo Palmier Teles, Lincoln Issamu Nojima
OBJECTIVE: The aim of this study was to evaluate the levels of Interleukin-1α (IL-1α), Interleukin-1β (IL-1β), Interleukin-1 receptor antagonist (IL-1Ra), Interleukin-10 (IL-10), Interleukin-13 (IL-13), Vascular endothelial growth factor (VEGF), Granulocyte-colony stimulating factor (G-CSF), and Growth related oncogene (GRO) in the peri-miniscrew implant crevicular fluid (MICF) under orthodontic loading. DESIGN: The study sample comprised 14 miniscrews immediately loaded and 17 unloaded ones...
January 27, 2020: Archives of Oral Biology
Noha Ali Abdelhady, Marwa Ali Tawfik, Shaza Mohammed Hammad
OBJECTIVE: This study was conducted to evaluate the clinical effectiveness treatment effects of a simple buccal technique for maxillary molar distalization using direct buccal skeletal anchorage. MATERIALS AND METHODS: After sample size calculation, fourteen female patients with bilateral Class II molar relationship (age 11-14 years) were selected from the clinic of the Department of Orthodontics, Faculty of Dentistry, Mansoura University, Egypt. After the application of the eligibility criteria, only eleven patients remained to final evaluation...
January 20, 2020: International Orthodontics
Naohiko Kawamura, Yuya Nakao, Rina Ishikawa, Dai Tsuchida, Masahiro Iijima
In current orthodontic practice, miniscrew implants (MSIs) for anchorage and bone fixation plates (BFPs) for surgical orthodontic treatment are commonly used. MSIs and BFPs that are made of bioabsorbable material would avoid the need for removal surgery. We investigated the mechanical, degradation and osseointegration properties and the bone-implant interface strength of the AZ31 bioabsorbable magnesium alloy to assess its suitability for MSIs and BFPs. The mechanical properties of a Ti alloy (TiA), AZ31 Mg alloy (MgA), pure Mg and poly-L-lactic acid (PLA) were investigated using a nanoindentation test...
January 19, 2020: Materials
Till Edward Bechtold, Young-Chel Park, Kyung-Ho Kim, Heekyu Jung, Ju-Young Kang, Yoon Jeong Choi
OBJECTIVE: To investigate treatment stability of miniscrew-anchored maxillary distalization in Class II malocclusion. MATERIALS AND METHODS: This retrospective study included a distalization (n = 19) and a control (n = 19) group; a patient group with minor corrections served the control. Lateral cephalograms of 38 adult patients were taken before (T0), immediately after (T1), and 3-4 years after (T2) treatment. Horizontal and vertical movement and tipping of the maxillary first molars (U6) and central incisors (U1) were measured along with skeletal craniofacial parameters at three time points to compare the two groups regarding the achieved treatment effects and their stability...
January 20, 2020: Angle Orthodontist
Arathi Murugesan, Arvind Sivakumar
INTRODUCTION: Infrazygomatic crest miniscrews are an important advancement in the field of orthodontics for anchorage reinforcement. The size of the miniscrews and the site of placement depend on the bone thickness in the infazygomatic crest area. The bone morphology and the thickness vary among different ethnicities of population. OBJECTIVES: To assess the bone thickness in the infrazygomatic crest area around the distobuccal root of the maxillary first molar using cone beam computed tomography and determine the best possible site and angulation for the placement of the miniscrew...
January 8, 2020: International Orthodontics
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