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Article: Rates of tooth movement and bone remodeling activity: Self-ligating versus conventional brackets.

do Nascimento, Leonard-Euler-Andrade-Gomes / Pithon, Matheus-Melo / Ruellas, Antônio-Carlos de O / Franzotti, Eduardo-Sant Anna / Filho, Antônio-Cruz-Gonçalves / de Souza, Margareth-Maria-Gomes / Bolognese, Ana-Maria

Journal of clinical and experimental dentistry

2020 Volume 12, Issue 4, Page(s) e391–e398

Abstract: Background: Bracket systems have been developed with the purpose of reducing frictional resistance between the archwire and accessories. The aim of this research was to compare rates of tooth movement and regions of cellular bone modeling activity along ...

Abstract	Background: Bracket systems have been developed with the purpose of reducing frictional resistance between the archwire and accessories. The aim of this research was to compare rates of tooth movement and regions of cellular bone modeling activity along tooth root surfaces of teeth moved with conventional vs. self-ligating brackets. Material and methods: The experiments were conducted in 20 male dogs. Bands were cemented in all intermediate incisors, with conventional brackets (Morelli) on the right side and hybrid self-ligating ones (T3-American Orthodontics) on the left side. A 0.019" x 0.025" stainless steel wire was inserted passively in the slot of these brackets with chain elastics (250 gf) to perform sliding mechanics. Clinical records of the orthodontic mechanics were made before and after 15 days of the tooth movement. The dental segments of the animals were prepared for light microscopy. Statistical analysis of variance and the Tukey correction with a P value at 5% were used. Results: There were no significant differences in tooth movement rates between the two types of brackets but differences, in the bone modeling activity, suggested that tooth movement with the self-ligating brackets resulted in more tipping and less translational movement than tooth movement with the conventional brackets. Conclusions: The rates of tooth movement were similar between the two systems. The histological evaluation of cellular bone modeling activity along tooth root surfaces showed more translation movement of teeth with the conventional brackets, and more tipping movement of teeth with self-ligating brackets.
Language	English
Publishing date	2020-04-01
Publishing country	Spain
Document type	Journal Article
ZDB-ID	2586647-3
ISSN	1989-5488
ISSN	1989-5488
DOI	10.4317/jced.56615
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Article: Colour stability of aesthetic brackets: ceramic and plastic.

Filho, Hibernon Lopes / Maia, Lúcio Henrique / Araújo, Marcus V / Eliast, Carlos Nelson / Ruellas, Antônio Carlos O

Australian orthodontic journal

2013 Volume 29, Issue 1, Page(s) 13–20

Abstract: Background: The colour stability of aesthetic brackets may differ according to their composition, morphology and surface property, which may consequently influence their aesthetic performance.: Aims: To assess the colour stability of aesthetic ... ...

Abstract	Background: The colour stability of aesthetic brackets may differ according to their composition, morphology and surface property, which may consequently influence their aesthetic performance. Aims: To assess the colour stability of aesthetic brackets (ceramic and plastic) after simulating aging and staining. Methods: Twelve commercially manufactured ceramic brackets and four different plastic brackets were assessed. To determine possible colour change (change of E(ab)) and the value of the NBS (National Bureau of Standards) unit system, spectrophotometric colour measurements for CIE L, a* and b* were taken before and after the brackets were aged and stained. Statistical analysis was undertaken using a one-way ANOVA analysis of variance and a Tukey multiple comparison test (alpha = 0.05). Results: The colour change between the various (ceramic and plastic) materials was not significant (p > 0.05), but still varied significantly (p < 0.001) between the brackets of the same composition or crystalline structure and among commercial brands. Conclusion: Colour stability cannot be confirmed simply by knowing the type of material and crystalline composition or structure.
MeSH term(s)	Ceramics/chemistry ; Coffee ; Color ; Colorimetry ; Crystallography ; Dental Materials/chemistry ; Esthetics, Dental ; Humans ; Humidity ; Materials Testing ; Orthodontic Appliance Design ; Orthodontic Brackets ; Plastics/chemistry ; Spectrophotometry ; Surface Properties ; Tea ; Temperature ; Time Factors ; Ultraviolet Rays
Chemical Substances	Coffee ; Dental Materials ; Plastics ; Tea
Language	English
Publishing date	2013-05
Publishing country	Australia
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	410066-9
ISSN	0587-3908
ISSN	0587-3908
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Article ; Online: Clinical decision support systems in orthodontics: A narrative review of data science approaches.

Orthodontics & craniofacial research

2021 Volume 24 Suppl 2, Page(s) 26–36

Abstract: Advancements in technology and data collection generated immense amounts of information from various sources such as health records, clinical examination, imaging, medical devices, as well as experimental and biological data. Proper management and ... ...

Abstract	Advancements in technology and data collection generated immense amounts of information from various sources such as health records, clinical examination, imaging, medical devices, as well as experimental and biological data. Proper management and analysis of these data via high-end computing solutions, artificial intelligence and machine learning approaches can assist in extracting meaningful information that enhances population health and well-being. Furthermore, the extracted knowledge can provide new avenues for modern healthcare delivery via clinical decision support systems. This manuscript presents a narrative review of data science approaches for clinical decision support systems in orthodontics. We describe the fundamental components of data science approaches including (a) Data collection, storage and management; (b) Data processing; (c) In-depth data analysis; and (d) Data communication. Then, we introduce a web-based data management platform, the Data Storage for Computation and Integration, for temporomandibular joint and dental clinical decision support systems.
MeSH term(s)	Artificial Intelligence ; Data Science ; Decision Support Systems, Clinical ; Machine Learning ; Orthodontics
Language	English
Publishing date	2021-05-24
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2076514-9
ISSN	1601-6343 ; 1601-6335
ISSN (online)	1601-6343
ISSN	1601-6335
DOI	10.1111/ocr.12492
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Article ; Online: Cone beam computed tomography-based models versus multislice spiral computed tomography-based models for assessing condylar morphology.

Gomes, Liliane Rosas / Gomes, Marcelo Regis / Gonçalves, João Roberto / Ruellas, Antônio Carlos O / Wolford, Larry M / Paniagua, Beatriz / Benavides, Erika / Cevidanes, Lúcia Helena Soares

Oral surgery, oral medicine, oral pathology and oral radiology

2016 Volume 121, Issue 1, Page(s) 96–105

Abstract: Objective: To quantitatively compare condylar morphology using cone beam computed tomography (CBCT) and multislice spiral computed tomography (MSCT) virtual three-dimensional surface models.: Study design: The sample consisted of secondary data ... ...

Abstract	Objective: To quantitatively compare condylar morphology using cone beam computed tomography (CBCT) and multislice spiral computed tomography (MSCT) virtual three-dimensional surface models. Study design: The sample consisted of secondary data analyses of CBCT and MSCT scans obtained for clinical purposes from 74 patients treated with condylar resection and prosthetic joint replacement. Three-dimensional surface models of 146 condyles were constructed from each scan modality. Across-subject models were approximated and voxel-based registration was performed between homologous CBCT and MSCT images, making it possible to create average CBCT- and MSCT-based condylar models. SPHARM-PDM software provided matching points on each corresponding model. ShapeAnalysisMANCOVA software assessed statistically significant differences between observers and imaging modalities. One-sample t-tests evaluated the null hypothesis that the mean differences between each CBCT- and MSCT-based model were not clinically significant (<.5 mm). Tests were conducted at a significance level of P < .05. Results: ShapeAnalysisMANCOVA showed no statistically significant difference between the average CBCT- and MSCT-based models (P > .68). During pairwise comparison, the mean difference observed was .406 mm (SD, .173). One sample t-test showed that mean differences between each set of paired CBCT- and MSCT-based models were not clinically significant (P = .411). Conclusion: Three-dimensional surface models constructed from CBCT images are comparable to those derived from MSCT scans and may be considered reliable tools for assessing condylar morphology.
MeSH term(s)	Cone-Beam Computed Tomography ; Female ; Humans ; Imaging, Three-Dimensional ; Male ; Mandibular Condyle/diagnostic imaging ; Mandibular Condyle/surgery ; Models, Anatomic ; Multidetector Computed Tomography ; Radiographic Image Interpretation, Computer-Assisted ; Reproducibility of Results
Language	English
Publishing date	2016-01
Publishing country	United States
Document type	Comparative Study ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	2650843-6
ISSN	2212-4411 ; 2212-4403
ISSN (online)	2212-4411
ISSN	2212-4403
DOI	10.1016/j.oooo.2015.10.015
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Article: Staging hand-wrist and cervical vertebrae images: a comparison of reproducibility.

Cunha, Amanda C / Cevidanes, Lucia Hs / Sant'Anna, Eduardo F / Guedes, Fabio R / Luiz, Ronir R / McNamara, James A / Franchi, Lorenzo / Ruellas, Antonio Carlos O

Dento maxillo facial radiology

2018 Volume 47, Issue 5, Page(s) 20170301

Abstract: Objectives: The aim of this study was to compare the reproducibility of skeletal maturation assessments by raters with similar orthodontic experience using hand-wrist (HW) and cervical vertebral maturation (CVM) methods.: Methods: HW and lateral ... ...

Abstract	Objectives: The aim of this study was to compare the reproducibility of skeletal maturation assessments by raters with similar orthodontic experience using hand-wrist (HW) and cervical vertebral maturation (CVM) methods. Methods: HW and lateral cephalometric radiographs from 15 subjects (8 males and 7 females; ages, 9-16 years) were selected randomly. HW skeletal maturation was evaluated by the method of Greulich and Pyle, and CVM staging was evaluated by the method of Baccetti et al. Six orthodontic residents evaluated all images at three time periods: T Results: The intraexaminer reliability assessed by intraclass correlation coefficient was scored as good for both of methods (T Conclusions: Both HW and CVM methods presented good reproducibility for intra- and interexaminer correlation assessments. The small LoA indicated that the CVM is a reproducible method.
MeSH term(s)	Adolescent ; Age Determination by Skeleton/methods ; Cephalometry/methods ; Cervical Vertebrae/diagnostic imaging ; Child ; Female ; Hand/diagnostic imaging ; Humans ; Male ; Reproducibility of Results ; Wrist/diagnostic imaging
Language	English
Publishing date	2018-03-12
Publishing country	England
Document type	Comparative Study ; Journal Article
ZDB-ID	221323-0
ISSN	1476-542X ; 0250-832X ; 0349-490X
ISSN (online)	1476-542X
ISSN	0250-832X ; 0349-490X
DOI	10.1259/dmfr.20170301
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Article ; Online: In vivo comparison of the friction forces in new and used brackets.

Ribeiro, Alexandre A / Mattos, Cláudia T / Ruellas, Antonio Carlos O / Araújo, Monica T S / Elias, Carlos Nelson

Orthodontics : the art and practice of dentofacial enhancement

2012 Volume 13, Issue 1, Page(s) e44–50

Abstract: Studies that evaluate frictional force on orthodontic brackets usually compare ligature, archwire size, bracket alloys, and systems. However, these studies do not simulate in vitro specific conditions of in vivo situations. Aiming to evaluate some ... ...

Abstract	Studies that evaluate frictional force on orthodontic brackets usually compare ligature, archwire size, bracket alloys, and systems. However, these studies do not simulate in vitro specific conditions of in vivo situations. Aiming to evaluate some conditions not created in vitro, 30 used standard edgewise brackets (30.7 months) collected from patients in the end of treatment (group 1) and 20 as-received brackets (group 2) of the same brand were compared. The brackets used in vivo were carefully removed to avoid deformation. Frictional resistance tests of both groups were performed in a universal testing machine using a system that standardizes normal force. Five brackets from each group were analyzed with scanning electron microscopy (SEM). Student t tests were used to compare the frictional force between groups 1 and 2 and showed a statistically difference (32.91 and 21.22 g, respectively). The Mann-Whitney test showed that group 1 had more organic matter attached to the slot surface compared with group 2 (P < .05). However, a comparison of topography between the groups did not show a statistically significant difference. SEM analysis showed a statistically high correlation (r = 0.73) between organic matter adhesion to the slot surface and frictional resistance. However, the results were not significant. These results indicate the clearance of brackets and wires during sliding mechanics.
MeSH term(s)	Dental Alloys ; Dental Stress Analysis ; Friction ; Humans ; Materials Testing ; Orthodontic Appliance Design ; Orthodontic Brackets ; Orthodontic Wires ; Stainless Steel
Chemical Substances	Dental Alloys ; Stainless Steel (12597-68-1)
Language	English
Publishing date	2012
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2611455-0
ISSN	2160-3006 ; 2160-2999
ISSN (online)	2160-3006
ISSN	2160-2999
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Article ; Online: Influence of optical properties of esthetic brackets (color, translucence, and fluorescence) on visual perception.

Lopes Filho, Hibernon / Maia, Lúcio E G / Araújo, Marcus Vinicius A / Ruellas, Antônio Carlos O

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics

2012 Volume 141, Issue 4, Page(s) 460–467

Abstract: Introduction: The aims of this study were to evaluate the optical properties of esthetic brackets and determine their influence on visual perception.: Methods: Eighty esthetic brackets of 16 commercial brands were tested. The color and translucency ... ...

Abstract	Introduction: The aims of this study were to evaluate the optical properties of esthetic brackets and determine their influence on visual perception. Methods: Eighty esthetic brackets of 16 commercial brands were tested. The color and translucency of the brackets, as well as the color of the maxillary central incisors of 40 subjects, were measured with a spectrophotometer. The fluorescence of the brackets was determined by duly calibrated appraisers. The color differences between the brands of brackets and the teeth were calculated. Data were analyzed by using 1-way analysis of variance; the Scheffé multiple comparison test was used to establish the difference between brands of brackets, (α = 0.05). Results: The color parameters L ∗ a ∗ b ∗ of nontranslucent brackets ranged from 49.4 to 86.0, -1.6 to 3.0, and 1.9 to 14.6, respectively. The direct transmission of light ranged from 0.0% to 38.8% transmittance. No bracket showed fluorescence. The color and translucency, as well as the color difference, of the brackets were influenced by brand (P <0.01). Conclusions: The optical properties of esthetic brackets have a direct influence on visual perception; translucent brackets and the nontranslucent InVu (TP Orthodontics, LaPorte, Ind) brackets were less visually perceptible.
MeSH term(s)	Adult ; Ceramics/chemistry ; Color ; Colorimetry/methods ; Composite Resins/chemistry ; Dental Materials/chemistry ; Esthetics, Dental ; Female ; Fluorescence ; Humans ; Incisor/anatomy & histology ; Light ; Male ; Orthodontic Appliance Design ; Orthodontic Brackets ; Plastics/chemistry ; Polycarboxylate Cement/chemistry ; Spectrophotometry/instrumentation ; Surface Properties ; Ultraviolet Rays ; Visual Perception/physiology ; Young Adult
Chemical Substances	Composite Resins ; Dental Materials ; Plastics ; Polycarboxylate Cement ; polycarbonate (25766-59-0)
Language	English
Publishing date	2012-04
Publishing country	United States
Document type	Comparative Study ; Journal Article
ZDB-ID	356699-7
ISSN	1097-6752 ; 0889-5406 ; 0002-9416
ISSN (online)	1097-6752
ISSN	0889-5406 ; 0002-9416
DOI	10.1016/j.ajodo.2011.10.026
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Article ; Online: Prosthetic, orthodontic and implant-supported rehabilitation of five maxillary anterior teeth with alveolar bone loss.

Guariza-Filho, Odilon / Araujo, Cristiano Miranda de / Schroder, Angela Graciela Deliga / Tanaka, Orlando Motohiro / Kern, Ricardo / Ruellas, Antonio Carlos

Dental press journal of orthodontics

2018 Volume 23, Issue 1, Page(s) 87–96

Abstract: Introduction: Treatment of maxillofacial injuries is complex and requires the establishment of a comprehensive and accurate diagnosis and correct treatment planning.: Objective: The objective of this case report was to describe the re-treatment of a ... ...

Abstract	Introduction: Treatment of maxillofacial injuries is complex and requires the establishment of a comprehensive and accurate diagnosis and correct treatment planning. Objective: The objective of this case report was to describe the re-treatment of a 27-year-old woman who was involved in a severe car accident that resulted in the loss of five anterior teeth and alveolar bone, and whose previous orthodontic and surgical treatments had been unsuccessful. Case report: In this case, the space for the missing mandibular molar was reopened to allow for rehabilitation. The positions of the mandibular incisors were improved. The right mandibular canine was moved to the mesial, allowing for correction of the Class II canine relationship on that side, and implants were placed to replace the maxillary anterior teeth. Conclusion: Anterior aesthetic and functional rehabilitation using a multidisciplinary approach was essential to improve the patient's facial aesthetics, to obtain great improvement in function and to achieve occlusal stability after 2 years of follow-up.
MeSH term(s)	Adult ; Alveolar Bone Loss/etiology ; Alveolar Bone Loss/rehabilitation ; Bone Transplantation ; Dental Implantation, Endosseous/methods ; Dental Prosthesis, Implant-Supported ; Female ; Humans ; Jaw, Edentulous, Partially/rehabilitation ; Maxilla ; Maxillofacial Injuries/complications ; Maxillofacial Injuries/rehabilitation ; Tooth Injuries/rehabilitation
Language	English
Publishing date	2018-05-21
Publishing country	Brazil
Document type	Case Reports ; Journal Article
ZDB-ID	2721511-8
ISSN	2177-6709 ; 2176-9451
ISSN (online)	2177-6709
ISSN	2176-9451
DOI	10.1590/2177-6709.23.1.087-096.oar
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Article ; Online: To what extent are impacted canines associated with root resorption of the adjacent tooth?: A systematic review with meta-analysis.

Schroder, Angela Graciela Deliga / Guariza-Filho, Odilon / de Araujo, Cristiano Miranda / Ruellas, Antonio Carlos / Tanaka, Orlando Motohiro / Porporatti, André Luís

Journal of the American Dental Association (1939)

2018 Volume 149, Issue 9, Page(s) 765–777.e8

Abstract: Background: The authors' aim in this systematic review was to evaluate to what extent impacted canines are associated with root resorption (RR) of the adjacent tooth by using cone-beam computed tomography.: Methods: The authors performed an open- ... ...

Abstract	Background: The authors' aim in this systematic review was to evaluate to what extent impacted canines are associated with root resorption (RR) of the adjacent tooth by using cone-beam computed tomography. Methods: The authors performed an open-ended electronic search of the Cochrane Library, Latin American and Caribbean Health Sciences Literature, PubMed (MEDLINE), Scopus, and Web of Science and a partial gray literature search by using Google Scholar, Open Grey, and ProQuest. The authors included studies in people (adolescents, adults, and older adult) with impacted maxillary permanent canines in which the investigators assessed the incidence of RR in adjacent teeth. The investigators detected RR by using cone-beam computed tomography. Two reviewers independently performed the study selection, data extraction, and risk of bias assessment with no language restrictions. The selection criteria included observational studies. Results: From the 953 studies recorded in databases, the authors included 18 studies. The meta-analysis results revealed that the most frequent position of impacted canines was 56.99% palatal (95% confidence interval [CI], 47.032% to 66.673%); the apical one-third was the most prevalent one-third for RR (56.87%; 95% CI, 38.880% to 73.628%). The intensity of RR was slight (43.2%; 95% CI, 35.229% to 51.352%), although 30.9% (95% CI, 19.007% to 44.261%) of RR was severe. Although the studies had different sample sizes, the main methodological problem was the absence of a control group and follow-up. Conclusions: RR in maxillary incisors was correlated with their contact with maxillary canines during eruption. Delayed eruption or treatment of impacted canines may lead to resorption of the adjacent lateral and central incisors. All root levels and surfaces of teeth associated with impacted maxillary canines can be resorbed to different levels of severity, but the apical one-third with slight resorption is the most common. Practical implications: Knowing to what extent impacted canines are associated with root resorption of the adjacent tooth before starting any intervention, and being able to share this information with the patient, caregivers, or caregivers and patient, allows the choice of the most appropriate treatment.
MeSH term(s)	Adolescent ; Aged ; Cone-Beam Computed Tomography ; Cuspid ; Humans ; Incisor ; Maxilla ; Observational Studies as Topic ; Root Resorption ; Tooth, Impacted
Language	English
Publishing date	2018-09-26
Publishing country	England
Document type	Journal Article ; Meta-Analysis ; Review ; Systematic Review
ZDB-ID	220622-5
ISSN	1943-4723 ; 0002-8177 ; 1048-6364
ISSN (online)	1943-4723
ISSN	0002-8177 ; 1048-6364
DOI	10.1016/j.adaj.2018.05.012
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Article ; Online: Evaluation of cytotoxicity and degree of conversion of glass ionomer cements reinforced with resin.

dos Santos, Rogério L / Pithon, Matheus Melo / Martins, Fernanda O / Romanos, Maria Teresa V / Ruellas, Antônio Carlos O

European journal of orthodontics

2012 Volume 34, Issue 3, Page(s) 362–366

Abstract: The objective of the present study was to evaluate the cytotoxicity and degree of monomer conversion of resin-reinforced glass ionomer cements (RGIC) over different time periods. Four RGICs: Fuji Ortho LC (FOLC), Fuji Ortho Band (FOB), Orthoglass (OGL), ... ...

Abstract	The objective of the present study was to evaluate the cytotoxicity and degree of monomer conversion of resin-reinforced glass ionomer cements (RGIC) over different time periods. Four RGICs: Fuji Ortho LC (FOLC), Fuji Ortho Band (FOB), Orthoglass (OGL), and Multicure Glass Ionomer (MCI) were evaluated for cytotoxicity in fibroblastic L929 cells and for their degree of monomer conversion over different time periods. Three control groups were also analysed: positive control (C+), consisting of Tween 80 cell detergent; negative control (C-), consisting of phosphate-buffered saline; and cell control (CC), consisting of cells exposed to any material. To evaluate the cytotoxicity, the dye-uptake technique was used and the degree of conversion was evaluated using infrared spectroscopy. The data obtained were analysed by analysis of variance and the Tukey's test. The results showed cytotoxicity of the RGICs at 1 and 24 hours; the viability values of these materials were statistically different from the C- and CC groups (P < 0.05). After 48 hours, the FOLC group was statistically similar to the CC and C- groups but different from the others. At 1 hour, there was no difference in the degree of conversion between the FOLC and OGL groups (P > 0.05) or between the FOB and MCI (P < 0.05) groups. However, at 48 hours, the FOLC group had greater conversion values than the other groups (P < 0.05). There is a direct relationship between the degree of conversion and RGIC cytotoxicity. Following initial polymerization, cytotoxicity decreases and, consequently, the degree of conversion of the material increases.
MeSH term(s)	Acrylic Resins ; Animals ; Cell Survival/drug effects ; Glass Ionomer Cements/chemistry ; Glass Ionomer Cements/toxicity ; L Cells (Cell Line) ; Mice ; Polymerization ; Spectrophotometry, Infrared ; Time Factors
Chemical Substances	Acrylic Resins ; Glass Ionomer Cements
Language	English
Publishing date	2012-06
Publishing country	England
Document type	Journal Article
ZDB-ID	423731-6
ISSN	1460-2210 ; 0141-5387
ISSN (online)	1460-2210
ISSN	0141-5387
DOI	10.1093/ejo/cjr009
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