28 results match your criteria inflammation miniscrew

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Clinical effectiveness of orthodontic miniscrew implantation guided by a novel cone beam CT image-based computer aided design and computer aided manufacturing (CAD-CAM) template.

Ann Transl Med 2021 Jun;9(12):1025

School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, China.

Background: Although miniscrews are widely used in orthodontic treatment as temporary anchorage devices, their correct and safe placement has attracted little attention. This study aimed to introduce a novel cone beam CT (CBCT) image-based computer aided design and computer aided manufacturing (CAD-CAM) template for orthodontic miniscrew implantation and to evaluate the effectiveness of miniscrews implanted under the guidance of this template.

Methods: The CBCT scans of ten patients requiring miniscrews as anchorage were analyzed in NNT software to predetermine the insertion sites of miniscrew implants. Read More

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Complications reported with the use of orthodontic miniscrews: A systematic review.

Korean J Orthod 2021 May;51(3):199-216

Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Section of Orthodontics, School of Dentistry, University of Messina, Policlinico Universitario G. Martino, Messina, Italy.

Objective: The aim of this systematic review was to evaluate the complications and side effects associated with the clinical use of orthodontic miniscrews by systematically reviewing the best available evidence.

Methods: A survey of articles published up to March 2020 investigating the complications associated with miniscrew insertion, in both the maxilla and mandible, was performed using 7 electronic databases. Clinical studies, case reports, and case series reporting complications associated with the use of orthodontic miniscrew implants were included. Read More

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Evaluation and Comparison of the Effect of Elastomeric Chain and Stainless Steel Ligature Wire on Maxillary Orthodontic Miniscrew Failure.

Int J Appl Basic Med Res 2021 Apr-Jun;11(2):100-105. Epub 2021 Apr 8.

Department of Orthodontics and Dentofacial Orthopedics, Hitkarini Dental College and Hospital, Jabalpur, Madhya Pradesh, India.

Context: Orthodontic miniscrews are used for the purpose of conservation of anchorage.

Aims: The aim of the study was to evaluate the orthodontic miniscrew failure between the elastomeric chain-supported retraction and stainless steel (SS) ligature-aided retraction.

Settings And Design: This was a cross-sectional split mouth randomized controlled trial. Read More

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Profiles of inflammation factors and inflammatory pathways around the peri-miniscrew implant.

Histol Histopathol 2021 Apr 9:18336. Epub 2021 Apr 9.

Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China.

Background: Peri-miniscrew implant is a temporary assistant armamentarium for the treatment of severe malocclusion and complex tooth movement, the inflammation around it is the main reason for the failure of orthodontic treatment due to the implant loosening and falling out. Inflammation around the peri-miniscrew implant is associated with the release of pro-inflammatory cytokines. These pro-inflammatory cytokines, in turn, recruit immune cells (such as macrophages, dendritic cells, T cells, and B cells), which can produce and release inflammatory biomarkers, regulate the interaction between immune cells, periodontal ligament cells, osteoblasts, and so on. Read More

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Effect of Low-Level Laser Therapy on Peri-Miniscrew Fluid Prostaglandin E2 and Substance P Levels: A Controlled Clinical Trial.

Turk J Orthod 2021 1;34(1):26-30. Epub 2021 Mar 1.

Health Service Vocational School of Higher Education, Van, Turkey.

Objective: This study aims to evaluate the effect of low-level laser therapy on peri-miniscrew fluid prostaglandin E2 (PGE2) and substance P (SP) levels during orthodontic treatment.

Methods: A total of 15 individuals were included in this study. Miniscrews were inserted to the inter-radicular region of the maxillary right and left second premolar and the first molar teeth, and diode lasers were randomly applied to the right or left side. Read More

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Levels of TGF-β1 in peri-miniscrew implant crevicular fluid.

J Oral Biol Craniofac Res 2020 Apr-Jun;10(2):93-98. Epub 2020 Mar 6.

Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.

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. Read More

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Fluorescence image and microbiological analysis of biofilm retained around healthy and inflamed orthodontic miniscrews.

Photodiagnosis Photodyn Ther 2020 Jun 29;30:101707. Epub 2020 Feb 29.

Dep. of Oral Microbiology, São Leopoldo Mandic Dental Institute and Research Center, Brazil.

Introduction: Peri-miniscrew inflammation is one of the causes of orthodontic miniscrew failure.

Objective: The aim of this study was to correlate and quantify throughout autofluorescence images, PCR and 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: healthy and inflamed miniscrews. Read More

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Influence of orthodontic loading on biomarkers levels around miniscrews.

Arch Oral Biol 2020 Apr 27;112:104668. Epub 2020 Jan 27.

Department of Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.

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. A load of 200gF was immediately applied to the miniscrews in the loaded group after the placement surgery. Read More

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Degradation and Biocompatibility of AZ31 Magnesium Alloy Implants In Vitro and In Vivo: A Micro-Computed Tomography Study in Rats.

Materials (Basel) 2020 Jan 19;13(2). Epub 2020 Jan 19.

Division of Orthodontics and Dentofacial Orthopedics, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan.

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. Read More

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January 2020

Comparison of biofilm formation and migration of Streptococcus mutans on tooth roots and titanium miniscrews.

Clin Exp Dent Res 2018 Apr 21;4(2):40-47. Epub 2018 Feb 21.

Applied Oral sciences, Faculty of Dentistry The University of Hong Kong Hong Kong.

Periodontitis and peri-implantitis are inflammatory diseases caused by periodontal pathogenic bacteria leading to destruction of supporting periodontal/peri-implant tissue. However, the progression of inflammatory process of these two diseases is different. The bacterial biofilm is the source of bacteria during the inflammatory process. Read More

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A review of biomarkers in peri-miniscrew implant crevicular fluid (PMICF).

Prog Orthod 2017 Nov 27;18(1):42. Epub 2017 Nov 27.

Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, India.

Background: The temporary anchorage devices (TADs) which include miniscrew implants (MSIs) have evolved as useful armamentarium in the management of severe malocclusions and assist in complex tooth movements. Although a multitude of factors is responsible for the primary and secondary stability of miniscrew implants, contemporary research highlights the importance of biological interface of MSI with bone and soft tissue in augmenting the success of implants. The inflammation and remodeling associated with MSI insertion or loading are reflected through biomarkers in peri-miniscrew implant crevicular fluid (PMICF) which is analogous to the gingival crevicular fluid. Read More

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November 2017

Developing Customized Dental Miniscrew Surgical Template from Thermoplastic Polymer Material Using Image Superimposition, CAD System, and 3D Printing.

Biomed Res Int 2017 9;2017:1906197. Epub 2017 Feb 9.

Department of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.

This study integrates cone-beam computed tomography (CBCT)/laser scan image superposition, computer-aided design (CAD), and 3D printing (3DP) to develop a technology for producing customized dental (orthodontic) miniscrew surgical templates using polymer material. Maxillary bone solid models with the bone and teeth reconstructed using CBCT images and teeth and mucosa outer profile acquired using laser scanning were superimposed to allow miniscrew visual insertion planning and permit surgical template fabrication. The customized surgical template CAD model was fabricated offset based on the teeth/mucosa/bracket contour profiles in the superimposition model and exported to duplicate the plastic template using the 3DP technique and polymer material. Read More

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Effects of Low-Level Laser Therapy in Orthodontic Patients on Immediate Inflammatory Response After Mini-Implants Insertion: A Preliminary Report.

Photomed Laser Surg 2017 Jan 3;35(1):57-63. Epub 2016 Nov 3.

São Leopoldo Mandic Dental Research Center , Rua José Rocha Junqueira, 13, Campinas, Brazil .

Background: The primary stability of a mini-implant is crucial to treatment sequence since most orthodontic mini-implant failures occur at an early stage. Irritation or inflammation of peri-implant tissues has been related to decreasing mini-implant success.

Purpose: This study evaluates the effect of low-level laser therapy on initial inflammation after orthodontic mini-implants installation. Read More

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January 2017

Assessment of stability of orthodontic mini-implants under orthodontic loading: A computed tomography study.

Indian J Dent Res 2015 May-Jun;26(3):237-43

Department of Orthodontics and Dentofacial Orthopedics, Pacific Dental College and Hospital, Debari, Udaipur, Rajasthan, India.

Objectives: Miniscrews have been used in recent years for anchorage in orthodontic treatment. However, it is not clear whether the miniscrews are absolutely stationary or move when force is applied. This prospective clinical study was undertaken to evaluate the mobility of orthodontic miniscrews under orthodontic loading using computed tomography. Read More

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February 2017

Clinical evaluation of immediate loading of titanium orthodontic implants.

Med J Armed Forces India 2015 Apr 23;71(2):165-70. Epub 2012 Oct 23.

Graded Specialist (Oral & Maxillofacial Surgery), INHS Nivarini, Chilika, Orissa, India.

Background: Skeletal anchorage using dental implants, miniplates, miniscrews and microscrews provides an absolute anchorage for tooth movement. Miniscrew and microscrew implants have many benefits such as ease of placement and removal and immediate orthodontic force application.

Methods: Fifteen subjects in the permanent dentition with an overjet ≥6 mm received treatment with the 0. Read More

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Impact of radiation history, gender and age on bone quality in sites for orthodontic skeletal anchorage device placement.

Ann Anat 2015 May 20;199:67-72. Epub 2014 Sep 20.

Department of Orthodontics, University of Bonn, Bonn, Germany.

Aims: Stability of orthodontic miniscrew implants is prerequisite to their success and durability in orthodontic treatment. As investigations revealed a positive correlation of miniscrew stability to periimplant bone quality, it has been the aim of this study to analyze the bone structure of resection preparations of human mandibles histologically by investigating the samples according to age, gender and exposure to radiotherapy.

Methods: Inflammation- and tumor-free alveolar bone sections from human mandibles (n = 31) with previously diagnosed carcinoma, chronic osteomyelitis or cysts were analyzed histomorphologically and histomorphometrically as to the dimension of trabeculae in cancellous areas. Read More

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A study of interleukin 1β levels in peri-miniscrew crevicular fluid (PMCF).

Prog Orthod 2014 Apr 1;15(1):30. Epub 2014 Apr 1.

Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi 110029, India.

Background: This study provides a vital insight in assessing the clinical and biochemical changes in interleukin (IL)-1β levels in peri-miniscrew crevicular fluid (PMCF) during the course of orthodontic tooth movement.

Methods: The study comprised the analysis of IL-1β in peri-miniscrew crevicular fluid obtained from crevices around the miniscrews inserted in 11 patients (eight females and three males, mean age 17.3 ± 4. Read More

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Effects of low-intensity laser therapy over mini-implants success rate in pigs.

Lasers Med Sci 2015 Feb 9;30(2):727-32. Epub 2013 Aug 9.

São Leopoldo Mandic Dental Research Center, Campinas, SP, Brazil,

The success rate of miniscrews when used as temporary orthodontic anchorage is relatively high, but some factors could affect its clinical success such as inflammation around the miniscrew. Low-intensity laser therapy has been widely used for biostimulation of tissue and wound healing specially for its anti-inflammatory effects. The purpose of this study was to evaluate the effect of low-intensity laser therapy over the miniscrew success rate. Read More

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February 2015

Investigation of bacteremia induced by removal of orthodontic mini-implants.

Eur J Orthod 2014 Feb 14;36(1):16-21. Epub 2013 Jan 14.

* Department of Orthodontics and.

The aim of this study was to investigate potential occurrence of bacteremia in orthodontic patients after removal of miniscrews.The study group comprised 30 healthy subjects (17 males, 13 females) with a mean age of 24.1 years treated with self-ligating fixed appliances and mini-implant anchorage. Read More

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February 2014

Bone density and miniscrew stability in orthodontic patients.

Aust Orthod J 2012 Nov;28(2):204-12

Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.

Objectives: The purpose of this study was to evaluate bone density in buccal inter-radicular bone between second premolars and first permanent molars and its association with the clinical stability of miniscrews used for en masse retraction of anterior teeth in extraction cases.

Materials And Methods: Thirty-eight miniscrews were placed in ten patients (8 females, 2 males: mean age, 18.9 +/- 4. Read More

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November 2012

Corrosion of orthodontic temporary anchorage devices.

Eur J Orthod 2013 Aug 9;35(4):500-6. Epub 2012 May 9.

Departments of Developmental Sciences/Orthodontics, Marquette University School of Dentistry, Milwaukee, WI 53201, USA

Corrosion of orthodontic miniscrews or temporary anchorage devices (TADs) has been proposed as a contributor to inflammation, which in turn is a factor in the clinical success of miniscrews. The purpose of this study was to measure the electrochemical properties of orthodontic miniscrews in artificial saliva with and without fluoride. The corrosion properties of three miniscrew products (VectorTAS, Ormco Corp. Read More

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Miniscrew covering: an alternative to prevent traumatic lesions.

Am J Orthod Dentofacial Orthop 2012 Feb;141(2):242-4

Department of Pedodontics and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

During orthodontic treatment with miniscrews, complications such as aphthous ulceration, soft-tissue coverage of the miniscrew head, soft-tissue inflammation, infection, and peri-implantitis can occur. Good hygiene can prevent inflammation by infection but does not prevent traumatic oral mucosal lesions at the buccal mucosa. The purpose of this article was to describe the use of a physical barrier--a light-cured temporary filling material--to cover the miniscrew head and prevent soft-tissue trauma. Read More

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February 2012

Anchorage miniscrews: a histologic study of peri-implant soft tissue.

Int Orthod 2012 Mar 14;10(1):85-95. Epub 2011 Oct 14.

60, boulevard Moulay Ismail, résidence Zineb, 3(e) étage, n(o) 4, Casablanca, Morocco.

Introduction: The aim of our study was to investigate the different histologic reactions of peri-implant soft tissue to miniscrews used in various orthodontic indications in patients during the course of treatment.

Material And Methods: Our study focuses on patients receiving orthodontic treatment and in whom we placed anchorage miniscrews for various orthodontic indications. Twenty-eight miniscrews from the same manufacturer (Dual Top Anchor system(®), Korea) were studied. Read More

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Effect of miniscrew placement torque on resistance to miniscrew movement under load.

Am J Orthod Dentofacial Orthop 2011 Sep;140(3):e93-8

Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa, Iowa City, IA 52242, USA.

Introduction: The primary stability of orthodontic anchorage miniscrews is believed to result from mechanical interlock, with success based upon a number of variables, including screw diameter, angle of placement, monocortical vs bicortical placement, placement through attached or unattached soft tissue, presence or absence of a pilot hole, periscrew inflammation, and maximum placement torque. The purpose of this ex-vivo study was to further explore the relationship between maximum placement torque during miniscrew placement and miniscrew resistance to movement under load.

Methods: Ninety-six titanium screws were placed into 24 hemi-maxillae and 24 hemi-mandibles from cadavers between the first and second premolars by using a digital torque screwdriver. Read More

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September 2011

Biological factors involved in implant-anchored orthodontics and in prosthetic-implant therapy: a literature review.

Arch Immunol Ther Exp (Warsz) 2010 Oct 30;58(5):379-83. Epub 2010 Jul 30.

Department of Orthodontics and Dentofacial Orthopedics, Wroclaw Medical University, Wrocław, Poland.

During the past few years, the application of orthodontic miniscrews and dental implants has been expanded. However, failures have necessitated ongoing investigation of potential risk factors. The aim of this overview was to conduct an assessment of the immunological response following application of cortical temporary anchorage devices--titanium miniscrew implants--in orthodontic patients. Read More

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October 2010

Cementum, pulp, periodontal ligament, and bone response after direct injury with orthodontic anchorage screws: a histomorphologic study in an animal model.

J Oral Maxillofac Surg 2009 Nov;67(11):2440-5

Department of Dentistry, Montefiore Medical Center, The University Hospital for the Albert Einstein College of Medicine, Bronx, NY, USA.

Purpose: To assess the histologic response of the periodontium, cementum, and pulp after intentional root injury with titanium screws.

Materials And Methods: Three female beagle dogs were used, and a total of 60 self-drilling/self-tapping miniscrews were manually inserted into the maxilla and the mandible with the intention of placement in close proximity or in direct contact with the roots. Digital radiographs were taken to select the sites with root injuries. Read More

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November 2009

Correlation between miniscrew stability and bone mineral density in orthodontic patients.

Am J Orthod Dentofacial Orthop 2009 Aug;136(2):243-50

Department of Orthodontics and Pediatrics, Juiz de Fora Federal University, Juiz de Fora, Brazil.

Introduction: The aims of this study were to correlate the clinical and radiographic stability of titanium miniscrews when used as orthodontic anchorage for maxillary canine retraction and to assess bone quality.

Methods: Thirty titanium miniscrews were placed in 15 consecutive patients (8 male, 7 female; age range, 12 years 5 months-32 years 11 months) as orthodontic anchorage. Orthodontic loads were applied immediately after miniscrew placement (T1) with a nickel-titanium closing coil spring. Read More

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Stability of miniplates and miniscrews used for orthodontic anchorage: experience with 492 temporary anchorage devices.

Clin Oral Implants Res 2008 Nov;19(11):1188-96

Department of Orthodontics, School of Dentistry, National Taiwan University, Dental Department, National Taiwan University Hospital, Taiwan.

Objectives: The aim of this retrospective study was to evaluate systematically the potential factors that influence failure rates of temporary anchorage devices (TADs) used for orthodontic anchorage.

Materials And Methods: Data on 492 TADs (miniplates, pre-drilling miniscrews, and self-drilling miniscrews) in 194 patients were collected. The factors related to TAD failure were evaluated using univariate analysis and multivariate forward stepwise logistic regression analysis. Read More

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November 2008
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