Artigo: O mecanismo: como ocorrem as reabsorções dentárias no ameloblastoma - Journal 2019 v24n4 - DPJO

Journal 2019 v24n4

Journal 2019 v24n4


O mecanismo: como ocorrem as reabsorções dentárias no ameloblastoma

Insight Ortodôntico

Autores: Alberto Consolaro, Giovana Gonçalves Martins, Ingrid Araújo De Oliveira, 

New guidelines for systematic reviews and farewell to interviews
New guidelines for systematic reviews and farewell to interviews

The job of an Editor-in-Chief of a scientific journal is not restricted to facilitate the workflow of manuscript submission, assess reviewer’s suggestions and make final approval/rejection decisions. In addition to this, there is also a large amount of managing tasks, some of them dedicated to improve the positioning of the journal in the rank of publications of its specialty which involves bibliometric indexes. For the regular reader, this does not seem to make much difference, being...

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The mechanism: how dental resorptions occur in ameloblastoma
The mechanism: how dental resorptions occur in ameloblastoma

Knife-edge or blunt root resorptions characterize ameloblastomas and are pathognomonic for this tumor, because they differentiate ameloblastomas from simple bone cysts, odontogenic keratocysts and nasopalatine duct cysts, which do not lead to resorption of involved teeth. Despite the very high frequency and importance of these characteristics for a differential diagnosis, a microscopic examination should also be conducted before defining the diagnosis and the treatment plan for these cases....

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Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods

Objective: The aim of this study was to compare the effects of three enamel etching modes — laser-etch, self-etch and acid-etch (5, 10 and 15 s) — on bracket bonding, using a universal adhesive. Methods: Eighty-four maxillary premolars were randomly divided into seven groups (n=12) based on the etching method and the adhesive used for bracket bonding. After water storage and thermocycling, shear bond strength was measured, and adhesive remnant index scores on debonded enamel were...

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Effect of orthodontic treatment on alveolar bone thickness in adults: a systematic review
Effect of orthodontic treatment on alveolar bone thickness in adults: a systematic review

Objectives: This review aimed at evaluating changes in alveolar bone thickness after completion of orthodontic treatment. Methods: Only prospective clinical studies that reported bone thickness in adult patients undergoing non-surgical orthodontic treatment were considered eligible. MEDLINE, EMBASE and LILACS databases were searched for articles published up to July 2018. Results: A total of 12 studies met the selected criteria. Most of the studies showed that orthodontic treatment produces...

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Comparison of the accuracy of virtual and direct bonding of orthodontic accessories
Comparison of the accuracy of virtual and direct bonding of orthodontic accessories

Introduction: Conventional direct and indirect bonding techniques fail to obtain the ideal bracket position. Objective: To compare the accuracy of virtual and conventional direct bonding of orthodontic accessories. Methods: A single virtual configuration (dental mannequin with Class I malocclusion) served as basis for generating the reference model (treated virtually) and the intervention models (10 digital models and 10 solid models, obtained by means of prototyping). A total of 560 teeth...

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Comparison of maxillomandibular asymmetries in adult patients presenting different sagittal jaw relationships
Comparison of maxillomandibular asymmetries in adult patients presenting different sagittal jaw relationships

Objective: The present study aims at using cone beam computed tomography (CBCT) to analyze the maxillomandibular characteristics present in adults with mandibular asymmetries and different sagittal jaw relationships. Methods: 360 patients were selected and divided into three groups (Class I, Class II, and Class III), with 120 individuals per group. The groups were then subdivided according to the intensity of lateral deviation of the gnathion point, into: 1) relative symmetry, 2) moderate...

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Relationship between skeletal Class II and Class III malocclusions with vertical skeletal pattern
Relationship between skeletal Class II and Class III malocclusions with vertical skeletal pattern

Objective: The purpose of this study was to establish the association between sagittal and vertical skeletal patterns and assess which cephalometric variables contribute to the possibility of developing skeletal Class II or Class III malocclusion. Methods: Cross-sectional study. The sample included pre-treatment lateral cephalogram radiographs from 548 subjects (325 female, 223 male) aged 18 to 66 years. Sagittal skeletal pattern was established by three different classification parameters...

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Formulation and characterization of antibacterial orthodontic adhesive
Formulation and characterization of antibacterial orthodontic adhesive

Objective: The objective of this study was to formulate experimental orthodontic bracket adhesives and test their mechanical properties, fluoride release and antibacterial activity. Methods: Four experimental antibacterial orthodontic bracket adhesives were prepared with different compositions of synthesized antibacterial monomers replacing total 5% of dental monomers in the control Transbond XT (3M): 5%C11, 3.5%C11+1.5%C2, 5%C16, and 3.5%C16+1.5%C2. Transbond XT alone was used as control....

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Orthodontic treatment as an adjunct to periodontal therapy
Orthodontic treatment as an adjunct to periodontal therapy

This study discusses the role of orthodontic treatment as an adjunct to the control and treatment of periodontal disease conditions, and describes a clinical case of severe anterior mandibular crowding and periodontal disease followed up for nine years and three months after orthodontic treatment completion. Malocclusion impaired proper dental hygiene, which led to bone loss and development of a periodontal abscess between mandibular canines and lateral incisors. After scaling and root...

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Biomechanics of extra-alveolar mini-implants
Biomechanics of extra-alveolar mini-implants

It is undeniable that extra-alveolar mini-implants anchorage has revolutionized Orthodontics. Correspondingly, the proper understanding of mini-implants biomechanics allowed to broaden the range of dental movements as never seen before in clinical practice. However, in order to produce better treatments, especially regarding the effects in occlusal plane, it is important to be aware of the numerous possibilities of applying force systems based on skeletal anchorage. Thus, this paper aims to...

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