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Success rate and factors affecting stability of infrazygomatic miniscrew implants: a systematic review and meta-analysis.
Eur J Orthod
December 2024
Department of Dentistry, All India Institute of Medical Sciences, Basni Industrial Area Phase-2, Jodhpur- 342005, Rajasthan, India.
Background: The infrazygomatic miniscrew implants (IZC-MSI) serve as innovative temporary anchorage devices placed parallel to the roots of molars in the infrazygomatic crest region, leveraging their extra-radicular location to support the en masse distalization and intrusion of the maxillary dentition. The efficacy and stability of these screws are crucial for their application in contemporary orthodontic practices.
Objectives: This systematic review aimed to estimate the success rate and factors affecting the stability of IZC-MSI.
Relationship Between Laterality of Orthodontic Miniscrew Failure and Clinical Variables.
J Clin Med
November 2024
Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo (Science Tokyo), Tokyo 113-8549, Japan.
: Many reports on orthodontic miniscrew insertion focus on insertion conditions, such as technique, but not on the insertion environment, such as the operator's dominant hand. This study aimed to ascertain whether the operator's dominant hand affects laterality in the success rate of manual and motorized miniscrew insertion methods. : This study retrospectively investigated the medical records of 250 Japanese patients, aged ≥15 years, who underwent miniscrew implantation in the maxilla by right-handed operators with at least 3 years of experience.
View Article and Find Full Text PDFCharacterizing orthodontic mini-screws in the hard palate of pigs: An experimental and finite-element study.
Heliyon
February 2024
Department of Life, Health and Environmental Sciences, Postgraduate School of Orthodontics, Università degli Studi dell'Aquila, Via Piazzale Salvatore Tommasi 1, Abruzzo, L'Aquila 67100, Italy.
Objective: This paper analyses the mechanical response of mini-implants under pull-out, push-in, and shear forces.
Materials And Methods: The authors have devised a specialized testing apparatus, using a universal testing machine, for the mechanical characterisation of orthodontic mini-implants (OMI) installed in pig hard palate. The experimental investigation encompasses seven screw types, each subjected to pull-out, push-in, and shear forces.
Palatal rugae change shape following orthodontic treatment: a comparison between extraction and non-extraction borderline cases using fractal analysis and 3D superimposition.
Eur J Orthod
December 2024
Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon str., Athens 11527, Greece.
Article Synopsis
- This study focuses on the changes in palatal rugae (the ridges on the hard palate) following orthodontic treatment, investigating whether their shape, complexity, and area are affected by treatment with or without tooth extractions.
- Researchers analyzed pre- and post-treatment plaster models from a sample of 61 cases, using advanced software to measure changes in the outlines, fractal dimensions (complexity), and area occupied by the rugae.
- Results showed significant differences in the distance between pre- and post-treatment outlines for extraction versus non-extraction groups, but no significant changes in the complexity of the rugae before and after treatment.
Development and in vitro testing of an orthodontic miniscrew for use in the mandible.
J Orofac Orthop
November 2024
Poliklinik für Kieferorthopädie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
Objective: Temporary anchorage devices (TADs) have been successfully used in the maxilla. However, in the mandible, lower success rates present a challenge in everyday clinical practice. A new TAD design will be presented that is intended to demonstrate optimization of the coupling structure as well as in the thread area for use in the mandible.
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