Introduction: Dental intrusion has long been considered one of the most difficult movements to induce in orthodontics. Using conventional mechanics, the main difficulty lies in the need to ensure anchorage control, which is highly complicated to achieve, so as to avoid parasitic movements. In this framework, mini-screws have proven to offer a very effective means of anchorage, allowing greater control over intrusion of the anterior and posterior teeth and a simpler biomechanical movement opening up new therapeutic perspectives for the orthodontist.
Objective: The aim of this study was to describe the clinical and biomechanical application of mini-screws for dental intrusion.
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http://dx.doi.org/10.1051/orthodfr/2018032 | DOI Listing |
Dent Traumatol
January 2025
Departament of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil.
Objective: To assess the influence of conservative or invasive treatments on the appearance of sequelae in permanent successor teeth (SPT) after injuries in the support tissues of anterior deciduous teeth (ISTDT).
Methods: This cohort study accompanied 52 children with ISTDT up to the complete eruption of the permanent successor to investigate the presence or not of SPT. Trauma was clinically evaluated according to the International Association for Dental Traumatology.
Medicina (Kaunas)
December 2024
Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Motilor 33, 400001 Cluj-Napoca, Romania.
: Most orthodontic forces are absorbed-dissipated before reaching the dental pulp and its neuro-vascular bundle (NVB); however, no data are available about their amounts. The objective of this study was to assess the amount of orthodontic force that reaches the dental pulp and its NVB during orthodontic movements in a healthy periodontium. : This study involved the second lower premolars of nine patients and 180 numerical simulations.
View Article and Find Full Text PDFAm J Orthod Dentofacial Orthop
December 2024
Discipline of Orthodontics, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia; Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Sydney, Australia; Division of Orthodontics, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland. Electronic address:
Introduction: The dentoskeletal effects of clear aligner treatment (CAT) with Invisalign vs temporary skeletal anchorage device-anchored Sydney intrusion spring (SIS) were compared in consecutively treated growing patients with anterior open bite using cone-beam computed tomography scans.
Methods: Fifteen adolescents treated exclusively with Invisalign, and 14 with SIS (first-phase treatment) were assessed retrospectively. Rigid-wise, voxel-based registration of pretreatment and posttreatment cone-beam computed tomography scans were performed using the anterior cranial base, maxillary plane, and mandibular body as reference regions.
Eur J Orthod
December 2024
Department of Dentistry, All India Institute of Medical Sciences, Basni Industrial Area Phase-2, Jodhpur- 342005, Rajasthan, India.
J Clin Med
November 2024
Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Motilor 33, 400001 Cluj-Napoca, Romania.
: This study assessed the biomechanical behavior of dental pulp and the neuro-vascular bundle/NVB as well as the ischemic risks during orthodontic movements in a gradual horizontal periodontal breakdown, using five methods and aiming to identify the most accurate one. : Seventy-two models of second lower premolar (from nine patients) were subjected to 3 N of intrusion, extrusion, rotation, tipping, and translation. Five numerical methods, Tresca, Von Mises/VM, Maximum and Minimum Principal, and hydrostatic pressure were used in a total of 1800 numerical simulations.
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